/*************************************************************************** * __________ __ ___. * Open \______ \ ____ ____ | | _\_ |__ _______ ___ * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ * \/ \/ \/ \/ \/ * $Id$ * * Copyright (C) 2006 by Barry Wardell * * Based on Rockbox iriver bootloader by Linus Nielsen Feltzing * and the ipodlinux bootloader by Daniel Palffy and Bernard Leach * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ****************************************************************************/ #include #include #include "config.h" #include "common.h" #include "cpu.h" #include "file.h" #include "system.h" #include "kernel.h" #include "lcd.h" #include "font.h" #include "storage.h" #include "adc.h" #include "button.h" #include "disk.h" #include "crc32-mi4.h" #include #include "power.h" #include "version.h" #if defined(SANSA_E200) || defined(PHILIPS_SA9200) #include "i2c.h" #include "backlight-target.h" #endif #include "usb.h" #if defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200) #include "usb_drv.h" #endif #include "usb-target.h" #if defined(SAMSUNG_YH925) /* this function (in lcd-yh925.c) resets the screen orientation for the OF * for use with dualbooting */ void lcd_reset(void); #endif /* Show the Rockbox logo - in show_logo.c */ extern int show_logo(void); /* Button definitions */ #if CONFIG_KEYPAD == IRIVER_H10_PAD #define BOOTLOADER_BOOT_OF BUTTON_LEFT #elif CONFIG_KEYPAD == SANSA_E200_PAD #define BOOTLOADER_BOOT_OF BUTTON_LEFT #elif CONFIG_KEYPAD == SANSA_C200_PAD #define BOOTLOADER_BOOT_OF BUTTON_LEFT #elif CONFIG_KEYPAD == MROBE100_PAD #define BOOTLOADER_BOOT_OF BUTTON_POWER #elif CONFIG_KEYPAD == PHILIPS_SA9200_PAD #define BOOTLOADER_BOOT_OF BUTTON_VOL_UP #elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD #define BOOTLOADER_BOOT_OF BUTTON_MENU #elif CONFIG_KEYPAD == PHILIPS_HDD6330_PAD #define BOOTLOADER_BOOT_OF BUTTON_VOL_UP #elif CONFIG_KEYPAD == SAMSUNG_YH_PAD #define BOOTLOADER_BOOT_OF BUTTON_LEFT #elif CONFIG_KEYPAD == SANSA_FUZE_PAD #define BOOTLOADER_BOOT_OF BUTTON_LEFT #elif CONFIG_KEYPAD == PBELL_VIBE500_PAD #define BOOTLOADER_BOOT_OF BUTTON_OK #endif /* Maximum allowed firmware image size. 10MB is more than enough */ #define MAX_LOADSIZE (10*1024*1024) /* A buffer to load the original firmware or Rockbox into */ unsigned char *loadbuffer = (unsigned char *)DRAM_START; /* Locations and sizes in hidden partition on Sansa */ #if (CONFIG_STORAGE & STORAGE_SD) #define PPMI_SECTOR_OFFSET 1024 #define PPMI_SECTORS 1 #define MI4_HEADER_SECTORS 1 #define NUM_PARTITIONS 2 #else #define NUM_PARTITIONS 1 #endif #define MI4_HEADER_SIZE 0x200 /* mi4 header structure */ struct mi4header_t { unsigned char magic[4]; uint32_t version; uint32_t length; uint32_t crc32; uint32_t enctype; uint32_t mi4size; uint32_t plaintext; uint32_t dsa_key[10]; uint32_t pad[109]; unsigned char type[4]; unsigned char model[4]; }; /* PPMI header structure */ struct ppmi_header_t { unsigned char magic[4]; uint32_t length; uint32_t pad[126]; }; inline unsigned int le2int(unsigned char* buf) { int32_t res = (buf[3] << 24) | (buf[2] << 16) | (buf[1] << 8) | buf[0]; return res; } inline void int2le(unsigned int val, unsigned char* addr) { addr[0] = val & 0xFF; addr[1] = (val >> 8) & 0xff; addr[2] = (val >> 16) & 0xff; addr[3] = (val >> 24) & 0xff; } struct tea_key { const char * name; uint32_t key[4]; }; #define NUM_KEYS (sizeof(tea_keytable)/sizeof(tea_keytable[0])) struct tea_key tea_keytable[] = { { "default" , { 0x20d36cc0, 0x10e8c07d, 0xc0e7dcaa, 0x107eb080 } }, { "sansa", { 0xe494e96e, 0x3ee32966, 0x6f48512b, 0xa93fbb42 } }, { "sansa_gh", { 0xd7b10538, 0xc662945b, 0x1b3fce68, 0xf389c0e6 } }, { "sansa_103", { 0x1d29ddc0, 0x2579c2cd, 0xce339e1a, 0x75465dfe } }, { "rhapsody", { 0x7aa9c8dc, 0xbed0a82a, 0x16204cc7, 0x5904ef38 } }, { "p610", { 0x950e83dc, 0xec4907f9, 0x023734b9, 0x10cfb7c7 } }, { "p640", { 0x220c5f23, 0xd04df68e, 0x431b5e25, 0x4dcc1fa1 } }, { "virgin", { 0xe83c29a1, 0x04862973, 0xa9b3f0d4, 0x38be2a9c } }, { "20gc_eng", { 0x0240772c, 0x6f3329b5, 0x3ec9a6c5, 0xb0c9e493 } }, { "20gc_fre", { 0xbede8817, 0xb23bfe4f, 0x80aa682d, 0xd13f598c } }, { "elio_p722", { 0x6af3b9f8, 0x777483f5, 0xae8181cc, 0xfa6d8a84 } }, { "c200", { 0xbf2d06fa, 0xf0e23d59, 0x29738132, 0xe2d04ca7 } }, { "c200_103", { 0x2a7968de, 0x15127979, 0x142e60a7, 0xe49c1893 } }, { "c200_106", { 0xa913d139, 0xf842f398, 0x3e03f1a6, 0x060ee012 } }, { "view", { 0x70e19bda, 0x0c69ea7d, 0x2b8b1ad1, 0xe9767ced } }, { "sa9200", { 0x33ea0236, 0x9247bdc5, 0xdfaedf9f, 0xd67c9d30 } }, { "hdd1630", { 0x04543ced, 0xcebfdbad, 0xf7477872, 0x0d12342e } }, { "vibe500", { 0xe3a66156, 0x77c6b67a, 0xe821dca5, 0xca8ca37c } }, }; /* tea_decrypt() from http://en.wikipedia.org/wiki/Tiny_Encryption_Algorithm "Following is an adaptation of the reference encryption and decryption routines in C, released into the public domain by David Wheeler and Roger Needham:" */ /* NOTE: The mi4 version of TEA uses a different initial value to sum compared to the reference implementation and the main loop is 8 iterations, not 32. */ static void tea_decrypt(uint32_t* v0, uint32_t* v1, uint32_t* k) { uint32_t sum=0xF1BBCDC8, i; /* set up */ uint32_t delta=0x9E3779B9; /* a key schedule constant */ uint32_t k0=k[0], k1=k[1], k2=k[2], k3=k[3]; /* cache key */ for(i=0; i<8; i++) { /* basic cycle start */ *v1 -= ((*v0<<4) + k2) ^ (*v0 + sum) ^ ((*v0>>5) + k3); *v0 -= ((*v1<<4) + k0) ^ (*v1 + sum) ^ ((*v1>>5) + k1); sum -= delta; /* end cycle */ } } /* mi4 files are encrypted in 64-bit blocks (two little-endian 32-bit integers) and the key is incremented after each block */ static void tea_decrypt_buf(unsigned char* src, unsigned char* dest, size_t n, uint32_t * key) { uint32_t v0, v1; unsigned int i; for (i = 0; i < (n / 8); i++) { v0 = le2int(src); v1 = le2int(src+4); tea_decrypt(&v0, &v1, key); int2le(v0, dest); int2le(v1, dest+4); src += 8; dest += 8; /* Now increment the key */ key[0]++; if (key[0]==0) { key[1]++; if (key[1]==0) { key[2]++; if (key[2]==0) { key[3]++; } } } } } static inline bool tea_test_key(unsigned char magic_enc[8], uint32_t * key, int unaligned) { unsigned char magic_dec[8]; tea_decrypt_buf(magic_enc, magic_dec, 8, key); return (le2int(&magic_dec[4*unaligned]) == 0xaa55aa55); } static int tea_find_key(struct mi4header_t *mi4header, int fd) { unsigned int i; int rc; unsigned int j; uint32_t key[4]; unsigned char magic_enc[8]; int key_found = -1; unsigned int magic_location = mi4header->length-4; int unaligned = 0; if ( (magic_location % 8) != 0 ) { unaligned = 1; magic_location -= 4; } /* Load encrypted magic 0xaa55aa55 to check key */ lseek(fd, MI4_HEADER_SIZE + magic_location, SEEK_SET); rc = read(fd, magic_enc, 8); if(rc < 8 ) return EREAD_IMAGE_FAILED; printf("Searching for key:"); for (i=0; i < NUM_KEYS && (key_found<0) ; i++) { key[0] = tea_keytable[i].key[0]; key[1] = tea_keytable[i].key[1]; key[2] = tea_keytable[i].key[2]; key[3] = tea_keytable[i].key[3]; /* Now increment the key */ for(j=0; j<((magic_location-mi4header->plaintext)/8); j++){ key[0]++; if (key[0]==0) { key[1]++; if (key[1]==0) { key[2]++; if (key[2]==0) { key[3]++; } } } } if (tea_test_key(magic_enc,key,unaligned)) { key_found = i; printf("%s...found", tea_keytable[i].name); } else { /* printf("%s...failed", tea_keytable[i].name); */ } } return key_found; } /* Load mi4 format firmware image */ int load_mi4(unsigned char* buf, char* firmware, unsigned int buffer_size) { int fd; struct mi4header_t mi4header; int rc; unsigned long sum; char filename[MAX_PATH]; snprintf(filename,sizeof(filename), BOOTDIR "/%s",firmware); fd = open(filename, O_RDONLY); if(fd < 0) { snprintf(filename,sizeof(filename),"/%s",firmware); fd = open(filename, O_RDONLY); if(fd < 0) return EFILE_NOT_FOUND; } read(fd, &mi4header, MI4_HEADER_SIZE); /* MI4 file size */ printf("mi4 size: %x", mi4header.mi4size); if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size) return EFILE_TOO_BIG; /* CRC32 */ printf("CRC32: %x", mi4header.crc32); /* Rockbox model id */ printf("Model id: %.4s", mi4header.model); /* Read binary type (RBOS, RBBL) */ printf("Binary type: %.4s", mi4header.type); /* Load firmware file */ lseek(fd, MI4_HEADER_SIZE, SEEK_SET); rc = read(fd, buf, mi4header.mi4size-MI4_HEADER_SIZE); if(rc < (int)mi4header.mi4size-MI4_HEADER_SIZE) return EREAD_IMAGE_FAILED; /* Check CRC32 to see if we have a valid file */ sum = chksum_crc32 (buf, mi4header.mi4size - MI4_HEADER_SIZE); printf("Calculated CRC32: %x", sum); if(sum != mi4header.crc32) return EBAD_CHKSUM; if( (mi4header.plaintext + MI4_HEADER_SIZE) != mi4header.mi4size) { /* Load encrypted firmware */ int key_index = tea_find_key(&mi4header, fd); if (key_index < 0) return EINVALID_FORMAT; /* Plaintext part is already loaded */ buf += mi4header.plaintext; /* Decrypt in-place */ tea_decrypt_buf(buf, buf, mi4header.mi4size-(mi4header.plaintext+MI4_HEADER_SIZE), tea_keytable[key_index].key); printf("%s key used", tea_keytable[key_index].name); /* Check decryption was successfull */ if(le2int(&buf[mi4header.length-mi4header.plaintext-4]) != 0xaa55aa55) { return EREAD_IMAGE_FAILED; } } return EOK; } #if (CONFIG_STORAGE & STORAGE_SD) /* Load mi4 firmware from a hidden disk partition */ int load_mi4_part(unsigned char* buf, struct partinfo* pinfo, unsigned int buffer_size, bool disable_rebuild) { struct mi4header_t mi4header; struct ppmi_header_t ppmi_header; unsigned long sum; /* Read header to find out how long the mi4 file is. */ storage_read_sectors(pinfo->start + PPMI_SECTOR_OFFSET, PPMI_SECTORS, &ppmi_header); /* The first four characters at 0x80000 (sector 1024) should be PPMI*/ if( memcmp(ppmi_header.magic, "PPMI", 4) ) return EFILE_NOT_FOUND; printf("BL mi4 size: %x", ppmi_header.length); /* Read mi4 header of the OF */ storage_read_sectors(pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS + (ppmi_header.length/512), MI4_HEADER_SECTORS, &mi4header); /* We don't support encrypted mi4 files yet */ if( (mi4header.plaintext) != (mi4header.mi4size-MI4_HEADER_SIZE)) return EINVALID_FORMAT; /* MI4 file size */ printf("OF mi4 size: %x", mi4header.mi4size); if ((mi4header.mi4size-MI4_HEADER_SIZE) > buffer_size) return EFILE_TOO_BIG; /* CRC32 */ printf("CRC32: %x", mi4header.crc32); /* Rockbox model id */ printf("Model id: %.4s", mi4header.model); /* Read binary type (RBOS, RBBL) */ printf("Binary type: %.4s", mi4header.type); /* Load firmware */ storage_read_sectors(pinfo->start + PPMI_SECTOR_OFFSET + PPMI_SECTORS + (ppmi_header.length/512) + MI4_HEADER_SECTORS, (mi4header.mi4size-MI4_HEADER_SIZE)/512, buf); /* Check CRC32 to see if we have a valid file */ sum = chksum_crc32 (buf,mi4header.mi4size-MI4_HEADER_SIZE); printf("Calculated CRC32: %x", sum); if(sum != mi4header.crc32) return EBAD_CHKSUM; #ifdef SANSA_E200 if (disable_rebuild) { char block[512]; printf("Disabling database rebuild"); storage_read_sectors(pinfo->start + 0x3c08, 1, block); block[0xe1] = 0; storage_write_sectors(pinfo->start + 0x3c08, 1, block); } #else (void) disable_rebuild; #endif return EOK; } #endif /* (CONFIG_STORAGE & STORAGE_SD) */ #ifdef HAVE_BOOTLOADER_USB_MODE /* Return USB_HANDLED if session took place else return USB_EXTRACTED */ static int handle_usb(int connect_timeout) { static struct event_queue q SHAREDBSS_ATTR; struct queue_event ev; int usb = USB_EXTRACTED; long end_tick = 0; if (!usb_plugged()) return USB_EXTRACTED; queue_init(&q, true); usb_init(); usb_start_monitoring(); printf("USB: Connecting"); if (connect_timeout != TIMEOUT_BLOCK) end_tick = current_tick + connect_timeout; while (1) { /* Sleep no longer than 1/2s */ queue_wait_w_tmo(&q, &ev, HZ/2); if (ev.id == SYS_USB_CONNECTED) { /* Switch to verbose mode if not in it so that the status updates * are shown */ verbose = true; /* Got the message - wait for disconnect */ printf("Bootloader USB mode"); usb = USB_HANDLED; usb_acknowledge(SYS_USB_CONNECTED_ACK); usb_wait_for_disconnect(&q); break; } if (connect_timeout != TIMEOUT_BLOCK && TIME_AFTER(current_tick, end_tick)) { /* Timed out waiting for the connect - will happen when connected * to a charger instead of a host port and the charging pin is * the same as the USB pin */ printf("USB: Timed out"); break; } if (!usb_plugged()) break; /* Cable pulled */ } usb_close(); queue_delete(&q); return usb; } #elif (defined(SANSA_E200) || defined(SANSA_C200) || defined(PHILIPS_SA9200) \ || defined (SANSA_VIEW)) && !defined(USE_ROCKBOX_USB) /* Return USB_INSERTED if cable present */ static int handle_usb(int connect_timeout) { int usb_retry = 0; int usb = USB_EXTRACTED; usb_init(); while (usb_drv_powered() && usb_retry < 5 && usb != USB_INSERTED) { usb_retry++; sleep(HZ/4); usb = usb_detect(); } if (usb != USB_INSERTED) usb = USB_EXTRACTED; return usb; (void)connect_timeout; } #else /* Ignore cable state */ static int handle_usb(int connect_timeout) { return USB_EXTRACTED; (void)connect_timeout; } #endif /* HAVE_BOOTLOADER_USB_MODE */ void* main(void) { int i; int btn; int rc; int num_partitions; struct partinfo* pinfo; #if !(CONFIG_STORAGE & STORAGE_SD) char buf[256]; unsigned short* identify_info; #endif int usb = USB_EXTRACTED; chksum_crc32gentab (); system_init(); kernel_init(); #ifdef HAVE_BOOTLOADER_USB_MODE /* loader must service interrupts */ enable_interrupt(IRQ_FIQ_STATUS); #endif lcd_init(); font_init(); show_logo(); adc_init(); #ifdef HAVE_BOOTLOADER_USB_MODE button_init_device(); #else button_init(); #endif #if defined(SANSA_E200) || defined(PHILIPS_SA9200) i2c_init(); _backlight_on(); #endif if (button_hold()) { verbose = true; lcd_clear_display(); printf("Hold switch on"); printf("Shutting down..."); sleep(HZ); power_off(); } btn = button_read_device(); /* Enable bootloader messages if any button is pressed */ #ifdef HAVE_BOOTLOADER_USB_MODE lcd_clear_display(); if (btn) verbose = true; #else if (btn) { lcd_clear_display(); verbose = true; } #endif lcd_setfont(FONT_SYSFIXED); printf("Rockbox boot loader"); printf("Version: " RBVERSION); printf(MODEL_NAME); i=storage_init(); #if !(CONFIG_STORAGE & STORAGE_SD) if (i==0) { identify_info=ata_get_identify(); /* Show model */ for (i=0; i < 20; i++) { ((unsigned short*)buf)[i]=htobe16(identify_info[i+27]); } buf[40]=0; for (i=39; i && buf[i]==' '; i--) { buf[i]=0; } printf(buf); } else { error(EATA, i, true); } #endif disk_init(IF_MV(0)); num_partitions = disk_mount_all(); if (num_partitions<=0) { error(EDISK,num_partitions, true); } /* Just list the first 2 partitions since we don't have any devices yet that have more than that */ for(i=0; itype, pinfo->size / 2048); } /* Now that storage is initialized, check for USB connection */ if ((btn & BOOTLOADER_BOOT_OF) == 0) { usb_pin_init(); usb = handle_usb(HZ*2); if (usb == USB_INSERTED) btn |= BOOTLOADER_BOOT_OF; } /* Try loading Rockbox, if that fails, fall back to the OF */ if((btn & BOOTLOADER_BOOT_OF) == 0) { printf("Loading Rockbox..."); rc = load_mi4(loadbuffer, BOOTFILE, MAX_LOADSIZE); if (rc < EOK) { bool old_verbose = verbose; verbose = true; printf("Can't load " BOOTFILE ": "); printf(strerror(rc)); verbose = old_verbose; btn |= BOOTLOADER_BOOT_OF; sleep(5*HZ); } else goto main_exit; } if(btn & BOOTLOADER_BOOT_OF) { /* Load original mi4 firmware in to a memory buffer called loadbuffer. The rest of the loading is done in crt0.S. 1) First try reading from the hidden partition (on Sansa only). 2) Next try a decrypted mi4 file in /System/OF.mi4 3) Finally, try a raw firmware binary in /System/OF.bin. It should be a mi4 firmware decrypted and header stripped using mi4code. */ printf("Loading original firmware..."); #if (CONFIG_STORAGE & STORAGE_SD) /* First try a (hidden) firmware partition */ printf("Trying firmware partition"); pinfo = disk_partinfo(1); if(pinfo->type == PARTITION_TYPE_OS2_HIDDEN_C_DRIVE) { rc = load_mi4_part(loadbuffer, pinfo, MAX_LOADSIZE, usb == USB_INSERTED); if (rc < EOK) { printf("Can't load from partition"); printf(strerror(rc)); } else { goto main_exit; } } else { printf("No hidden partition found."); } #endif #if defined(PHILIPS_HDD1630) || defined(PHILIPS_HDD6330) || defined(PHILIPS_SA9200) printf("Trying /System/OF.ebn"); rc=load_mi4(loadbuffer, "/System/OF.ebn", MAX_LOADSIZE); if (rc < EOK) { printf("Can't load /System/OF.ebn"); printf(strerror(rc)); } else { goto main_exit; } #endif printf("Trying /System/OF.mi4"); rc=load_mi4(loadbuffer, "/System/OF.mi4", MAX_LOADSIZE); if (rc < EOK) { printf("Can't load /System/OF.mi4"); printf(strerror(rc)); } else { #if defined(SAMSUNG_YH925) lcd_reset(); #endif goto main_exit; } printf("Trying /System/OF.bin"); rc=load_raw_firmware(loadbuffer, "/System/OF.bin", MAX_LOADSIZE); if (rc < EOK) { printf("Can't load /System/OF.bin"); printf(strerror(rc)); } else { #if defined(SAMSUNG_YH925) lcd_reset(); #endif goto main_exit; } error(0, 0, true); } main_exit: #ifdef HAVE_BOOTLOADER_USB_MODE storage_close(); system_prepare_fw_start(); #endif return (void*)loadbuffer; } 46 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 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/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id: $
 *
 * Copyright (C) 2006 Tom Ross
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/            

#include "plugin.h"
#include "pluginbitmaps/card_deck.h"
#include "pluginbitmaps/card_back.h"

PLUGIN_HEADER

/* save files */
#define SCORE_FILE PLUGIN_GAMES_DIR "/blackjack.score"
#define SAVE_FILE  PLUGIN_GAMES_DIR "/blackjack.save"

#define NUM_SCORES LCD_HEIGHT/8-2

/* final game return status */
#define BJ_END  3
#define BJ_USB  2
#define BJ_QUIT 1
#define BJ_LOSE 0

#if CONFIG_KEYPAD == RECORDER_PAD
#define BJACK_START      BUTTON_ON
#define BJACK_QUIT       BUTTON_OFF
#define BJACK_MAX        (BUTTON_ON|BUTTON_UP)
#define BJACK_MIN        (BUTTON_ON|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_F1
#define BJACK_STAY       BUTTON_F2
#define BJACK_DOUBLEDOWN BUTTON_F3
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_PLAY
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == ONDIO_PAD
#define BJACK_START      BUTTON_MENU
#define BJACK_QUIT       BUTTON_OFF
#define BJACK_MAX        (BUTTON_MENU|BUTTON_UP)
#define BJACK_MIN        (BUTTON_MENU|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_LEFT
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_UP
#define BJACK_SCORES     BUTTON_UP
#define BJACK_RESUME     BUTTON_DOWN
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == IRIVER_H10_PAD
#define BJACK_START      BUTTON_PLAY
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        (BUTTON_PLAY|BUTTON_SCROLL_UP)
#define BJACK_MIN        (BUTTON_PLAY|BUTTON_SCROLL_DOWN)
#define BJACK_HIT        BUTTON_PLAY
#define BJACK_STAY       BUTTON_FF
#define BJACK_DOUBLEDOWN BUTTON_REW
#define BJACK_SCORES     BUTTON_LEFT
#define BJACK_RESUME     BUTTON_RIGHT
#define BJACK_UP         BUTTON_SCROLL_UP
#define BJACK_DOWN       BUTTON_SCROLL_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || \
      (CONFIG_KEYPAD == IRIVER_H300_PAD)
#define BJACK_START      BUTTON_ON
#define BJACK_QUIT       BUTTON_OFF
#define BJACK_MAX        (BUTTON_ON|BUTTON_UP)
#define BJACK_MIN        (BUTTON_ON|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_ON
#define BJACK_STAY       BUTTON_REC
#define BJACK_DOUBLEDOWN BUTTON_SELECT
#define BJACK_SCORES     BUTTON_SELECT
#define BJACK_RESUME     BUTTON_MODE
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
      (CONFIG_KEYPAD == IPOD_3G_PAD) || \
      (CONFIG_KEYPAD == IPOD_1G2G_PAD)
#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       BUTTON_MENU
#define BJACK_MAX        (BUTTON_SELECT|BUTTON_SCROLL_FWD)
#define BJACK_MIN        (BUTTON_SELECT|BUTTON_SCROLL_BACK)
#define BJACK_HIT        BUTTON_SELECT
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_LEFT
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_PLAY
#define BJACK_UP         BUTTON_SCROLL_FWD
#define BJACK_DOWN       BUTTON_SCROLL_BACK
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
#define BJACK_START      BUTTON_PLAY
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        (BUTTON_PLAY|BUTTON_UP)
#define BJACK_MIN        (BUTTON_PLAY|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_SELECT
#define BJACK_STAY       BUTTON_REC
#define BJACK_DOUBLEDOWN BUTTON_PLAY
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_DOWN
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
#define BJACK_START      BUTTON_MODE
#define BJACK_QUIT       BUTTON_PLAY
#define BJACK_MAX        (BUTTON_EQ|BUTTON_UP)
#define BJACK_MIN        (BUTTON_EQ|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_EQ
#define BJACK_STAY       BUTTON_MODE
#define BJACK_DOUBLEDOWN BUTTON_SELECT
#define BJACK_SCORES     BUTTON_SELECT
#define BJACK_RESUME     (BUTTON_EQ|BUTTON_MODE)
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == GIGABEAT_PAD
#define BJACK_START      BUTTON_A
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        BUTTON_VOL_UP
#define BJACK_MIN        BUTTON_VOL_DOWN
#define BJACK_HIT        BUTTON_VOL_UP
#define BJACK_STAY       BUTTON_VOL_DOWN
#define BJACK_DOUBLEDOWN BUTTON_SELECT
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_MENU
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == SANSA_E200_PAD
#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        (BUTTON_REC|BUTTON_UP)
#define BJACK_MIN        (BUTTON_REC|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_SELECT
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_LEFT
#define BJACK_SCORES     BUTTON_UP
#define BJACK_RESUME     BUTTON_DOWN
#define BJACK_UP         BUTTON_SCROLL_FWD
#define BJACK_DOWN       BUTTON_SCROLL_BACK
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == SANSA_FUZE_PAD
#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       (BUTTON_HOME|BUTTON_REPEAT)
#define BJACK_MAX        (BUTTON_SELECT|BUTTON_UP)
#define BJACK_MIN        (BUTTON_SELECT|BUTTON_DOWN)
#define BJACK_HIT        (BUTTON_SELECT|BUTTON_REL)
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_LEFT
#define BJACK_SCORES     BUTTON_DOWN
#define BJACK_RESUME     BUTTON_UP
#define BJACK_UP         BUTTON_SCROLL_FWD
#define BJACK_DOWN       BUTTON_SCROLL_BACK
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT


#elif CONFIG_KEYPAD == SANSA_C200_PAD
#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        BUTTON_VOL_UP
#define BJACK_MIN        BUTTON_VOL_DOWN
#define BJACK_HIT        BUTTON_SELECT
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_LEFT
#define BJACK_SCORES     BUTTON_REC
#define BJACK_RESUME     BUTTON_DOWN
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == SANSA_CLIP_PAD
#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        BUTTON_VOL_UP
#define BJACK_MIN        BUTTON_VOL_DOWN
#define BJACK_HIT        BUTTON_SELECT
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_LEFT
#define BJACK_SCORES     BUTTON_HOME
#define BJACK_RESUME     BUTTON_DOWN
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == SANSA_M200_PAD
#define BJACK_START      (BUTTON_SELECT | BUTTON_REL)
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        BUTTON_VOL_UP
#define BJACK_MIN        BUTTON_VOL_DOWN
#define BJACK_HIT        (BUTTON_SELECT | BUTTON_REL)
#define BJACK_STAY       BUTTON_RIGHT
#define BJACK_DOUBLEDOWN BUTTON_LEFT
#define BJACK_SCORES     (BUTTON_SELECT | BUTTON_UP)
#define BJACK_RESUME     BUTTON_DOWN
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == ELIO_TPJ1022_PAD
#define BJACK_START      BUTTON_MAIN
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        (BUTTON_REC|BUTTON_UP)
#define BJACK_MIN        (BUTTON_REC|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_MAIN
#define BJACK_STAY       BUTTON_MENU
#define BJACK_DOUBLEDOWN BUTTON_DOWN
#define BJACK_SCORES     BUTTON_UP
#define BJACK_RESUME     BUTTON_FF
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == GIGABEAT_S_PAD
#define BJACK_START      BUTTON_PLAY
#define BJACK_QUIT       BUTTON_BACK
#define BJACK_MAX        BUTTON_VOL_UP
#define BJACK_MIN        BUTTON_VOL_DOWN
#define BJACK_HIT        BUTTON_VOL_UP
#define BJACK_STAY       BUTTON_VOL_DOWN
#define BJACK_DOUBLEDOWN BUTTON_SELECT
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_MENU
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == MROBE100_PAD

#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        BUTTON_MENU
#define BJACK_MIN        BUTTON_DISPLAY
#define BJACK_HIT        BUTTON_MENU
#define BJACK_STAY       BUTTON_DISPLAY
#define BJACK_DOUBLEDOWN BUTTON_DOWN
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_PLAY
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == IAUDIO_M3_PAD

#define BJACK_START      BUTTON_RC_PLAY
#define BJACK_QUIT       BUTTON_RC_REC
#define BJACK_MAX        (BUTTON_RC_PLAY|BUTTON_RC_VOL_UP)
#define BJACK_MIN        (BUTTON_RC_PLAY|BUTTON_RC_VOL_DOWN)
#define BJACK_HIT        BUTTON_RC_PLAY
#define BJACK_STAY       BUTTON_RC_FF
#define BJACK_DOUBLEDOWN BUTTON_RC_REW
#define BJACK_SCORES     BUTTON_RC_MENU
#define BJACK_RESUME     BUTTON_RC_MODE
#define BJACK_UP         BUTTON_RC_VOL_UP
#define BJACK_DOWN       BUTTON_RC_VOL_DOWN
#define BJACK_RIGHT      BUTTON_RC_FF
#define BJACK_LEFT       BUTTON_RC_REW

#elif CONFIG_KEYPAD == COWOND2_PAD
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_DOUBLEDOWN BUTTON_MINUS
#define BJACK_SCORES     BUTTON_MENU

#elif CONFIG_KEYPAD == CREATIVEZVM_PAD
#define BJACK_START      BUTTON_SELECT
#define BJACK_QUIT       BUTTON_BACK
#define BJACK_MAX        (BUTTON_CUSTOM|BUTTON_UP)
#define BJACK_MIN        (BUTTON_CUSTOM|BUTTON_DOWN)
#define BJACK_HIT        BUTTON_UP
#define BJACK_STAY       BUTTON_DOWN
#define BJACK_DOUBLEDOWN BUTTON_CUSTOM
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_MENU
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == PHILIPS_HDD1630_PAD
#define BJACK_START      BUTTON_MENU
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_MAX        BUTTON_VOL_UP
#define BJACK_MIN        BUTTON_VOL_DOWN
#define BJACK_HIT        BUTTON_VOL_UP
#define BJACK_STAY       BUTTON_VOL_DOWN
#define BJACK_DOUBLEDOWN BUTTON_SELECT
#define BJACK_SCORES     BUTTON_RIGHT
#define BJACK_RESUME     BUTTON_VIEW
#define BJACK_UP         BUTTON_UP
#define BJACK_DOWN       BUTTON_DOWN
#define BJACK_RIGHT      BUTTON_RIGHT
#define BJACK_LEFT       BUTTON_LEFT

#elif CONFIG_KEYPAD == ONDAVX747_PAD
#define BJACK_QUIT       BUTTON_POWER
#define BJACK_DOUBLEDOWN BUTTON_VOL_DOWN
#define BJACK_SCORES     BUTTON_MENU

#elif CONFIG_KEYPAD == MROBE500_PAD
#define BJACK_QUIT       BUTTON_POWER

#else
#error No keymap defined!
#endif

#ifdef HAVE_TOUCHSCREEN
#ifndef BJACK_DOUBLEDOWN 
#define BJACK_DOUBLEDOWN BUTTON_MIDLEFT
#endif
#ifndef BJACK_SCORES
#define BJACK_SCORES     BUTTON_MIDRIGHT
#endif
#ifndef BJACK_START
#define BJACK_START      BUTTON_CENTER
#endif
#ifndef BJACK_HIT
#define BJACK_HIT        BUTTON_CENTER
#endif
#ifndef BJACK_MAX
#define BJACK_MAX        BUTTON_TOPRIGHT
#endif
#ifndef BJACK_MIN
#define BJACK_MIN        BUTTON_TOPLEFT
#endif
#ifndef BJACK_RESUME
#define BJACK_RESUME     BUTTON_BOTTOMRIGHT
#endif
#ifndef BJACK_STAY
#define BJACK_STAY       BUTTON_BOTTOMLEFT
#endif
#ifndef BJACK_UP
#define BJACK_UP         BUTTON_TOPMIDDLE
#endif
#ifndef BJACK_DOWN
#define BJACK_DOWN       BUTTON_BOTTOMMIDDLE
#endif
#ifndef BJACK_RIGHT
#define BJACK_RIGHT      BUTTON_MIDRIGHT
#endif
#ifndef BJACK_LEFT
#define BJACK_LEFT       BUTTON_MIDLEFT
#endif

#endif

#ifdef HAVE_LCD_COLOR
#define BG_COLOR LCD_RGBPACK(0,157,0)
#define FG_COLOR LCD_WHITE
#elif LCD_DEPTH > 1
#define BG_COLOR LCD_WHITE
#define FG_COLOR LCD_BLACK
#endif

#define CARD_WIDTH  BMPWIDTH_card_back
#define CARD_HEIGHT BMPHEIGHT_card_back

/* This is the max amount of cards onscreen before condensing */
#define MAX_CARDS LCD_WIDTH/(CARD_WIDTH+4)

extern const fb_data card_deck[];
extern const fb_data card_back[];

#define NEXT_CARD bj->player_cards[done][bj->num_player_cards[done]]

/* dealer and player card positions */
unsigned int dealer_x, dealer_y, player_x, player_y;

typedef struct card {
    unsigned int value; /* Card's value in Blackjack */
    unsigned int num;        /* Value on card face 0-12 (0=Ace, 1=2, 11=Q) */
    unsigned int suit;       /* 0:Spades, 1:Hearts, 2: Clubs; 3: Diamonds */
    bool is_soft_ace;
} card;

typedef struct game_context {
    struct card player_cards[2][22]; /* 22 Cards means the deal was all aces */
    struct card dealer_cards[22];    /* That is the worst-case scenario */
    unsigned int player_total;              
    unsigned int dealer_total;              
    signed int player_money;                
    unsigned int num_player_cards[2]; 
    unsigned int num_dealer_cards;    
    unsigned int current_bet;               
    unsigned int split_status; /* 0 = split hasn't been asked,         *
                                * 1 = split did not occur              *
                                * 2 = split occurred                   *
                                * 3 = split occurred and 1st hand done */                                            
    bool is_blackjack;                      
    bool end_hand;                          
    bool asked_insurance;               
    signed short highscores[NUM_SCORES];
    bool resume;
    bool dirty;
} game_context;

/*****************************************************************************
* blackjack_init() initializes blackjack data structures.
******************************************************************************/
static void blackjack_init(struct game_context* bj) {  
    /* seed the rand generator */
    rb->srand(*rb->current_tick);

    /* reset card positions */
    dealer_x = 4;
    dealer_y = LCD_HEIGHT/4 - CARD_HEIGHT/2;
    player_x = 4;
    player_y = LCD_HEIGHT - LCD_HEIGHT/4 - CARD_HEIGHT/2;
    
    /* check for resumed game */
    if(bj->resume) return;

    /* reset scoring */
    bj->player_total = 0;
    bj->dealer_total = 0;
    bj->num_player_cards[0] = 2;
    bj->num_player_cards[1] = 0;
    bj->num_dealer_cards = 2;
    bj->end_hand = false;
    bj->split_status = 0;
    bj->is_blackjack = false;
    bj->asked_insurance = false;   
}

/*****************************************************************************
* blackjack_drawtable() draws the table and some text.
******************************************************************************/
static void blackjack_drawtable(struct game_context* bj) {
    unsigned int w, h, y_loc;
    char str[10];
    
#if LCD_HEIGHT <= 64
    rb->lcd_getstringsize("Bet", &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, 2*h + 1, "Bet");
    rb->snprintf(str, 9, "$%d", bj->current_bet);
    rb->lcd_getstringsize(str, &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, 3*h + 1, str);
    y_loc = LCD_HEIGHT/2;
#else
    rb->lcd_getstringsize("Bet", &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, 5*h / 2, "Bet");
    rb->snprintf(str, 9, "$%d", bj->current_bet);
    rb->lcd_getstringsize(str, &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, 7*h / 2, str);
    rb->lcd_hline(0, LCD_WIDTH, LCD_HEIGHT/2);
    y_loc = LCD_HEIGHT/2 + h;
#endif

    rb->lcd_putsxy(0,0, "Dealer");
    rb->lcd_getstringsize("Player", &w, &h);
    rb->lcd_putsxy(0, y_loc, "Player");
    rb->lcd_getstringsize("Total", &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, y_loc, "Total");
    rb->lcd_getstringsize("Money", &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, 0, "Money");
    rb->snprintf(str, 9, "$%d", bj->player_money - bj->current_bet);
    rb->lcd_getstringsize(str, &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, h + 1, str);
    rb->snprintf(str, 3, "%d", bj->player_total);
    rb->lcd_getstringsize(str, &w, &h);
    rb->lcd_putsxy(LCD_WIDTH - w, y_loc + h, str);
}

/*****************************************************************************
* find_value() is passed a card and returns its blackjack value.
******************************************************************************/
static unsigned int find_value(unsigned int number) {
    unsigned int thisValue;
    if (number == 0)
        thisValue = 11;   /* Aces get a value of 11 at first */
    else if (number < 10)
        thisValue = number + 1;
    else
        thisValue = 10;   /* Anything 10 or higher gets a value of 10 */

    return thisValue;
}

/*****************************************************************************
* draw_card() draws a card to the screen.
******************************************************************************/
static void draw_card(struct card temp_card, bool shown, unsigned int x, 
                      unsigned int y) {
    if(shown)
        rb->lcd_bitmap_part(card_deck, CARD_WIDTH*temp_card.num, 
                            CARD_HEIGHT*temp_card.suit, BMPWIDTH_card_deck,
                            x+1, y+1, CARD_WIDTH, CARD_HEIGHT);
    else
        rb->lcd_bitmap(card_back, x+1, y+1,CARD_WIDTH, CARD_HEIGHT);          
#if LCD_DEPTH > 1
    rb->lcd_set_foreground(LCD_BLACK);
#endif

    /* Print outlines */ 
#if CARD_WIDTH >= 26
    rb->lcd_hline(x+2, x+CARD_WIDTH-1, y);
    rb->lcd_hline(x+2, x+CARD_WIDTH-1, y+CARD_HEIGHT+1);
    rb->lcd_vline(x, y+2, y+CARD_HEIGHT-3);
    rb->lcd_vline(x+CARD_WIDTH+1, y+2, y+CARD_HEIGHT-1);
    rb->lcd_drawpixel(x+1, y+1);
    rb->lcd_drawpixel(x+1, y+CARD_HEIGHT);
    rb->lcd_drawpixel(x+CARD_WIDTH, y+1);
    rb->lcd_drawpixel(x+CARD_WIDTH, y+CARD_HEIGHT);
#else
    rb->lcd_hline(x+1, x+CARD_WIDTH, y);
    rb->lcd_hline(x+1, x+CARD_WIDTH, y+CARD_HEIGHT+1);
    rb->lcd_vline(x, y+1, y+CARD_HEIGHT);
    rb->lcd_vline(x+CARD_WIDTH+1, y+1, y+CARD_HEIGHT);
#endif

#if LCD_DEPTH > 1
    rb->lcd_set_foreground(FG_COLOR);
#endif
}

/*****************************************************************************
* new_card() initializes a new card and gives it values.
******************************************************************************/
static struct card new_card(void) {
    struct card new_card;
    new_card.suit = rb->rand()%4; /* Random number 0-3 */
    new_card.num = rb->rand()%13; /* Random number 0-12 */
    new_card.value = find_value(new_card.num);      
    new_card.is_soft_ace = new_card.num == 0 ? true : false;
    return new_card;
}

/*****************************************************************************
* deal_init_card() deals and draws to the screen the player's and dealer's
* initial cards.
******************************************************************************/
static void deal_init_cards(struct game_context* bj) {
    bj->dealer_cards[0] = new_card();
    bj->dealer_total += bj->dealer_cards[0].value;

    draw_card(bj->dealer_cards[0], false, dealer_x, dealer_y);

    bj->dealer_cards[1] = new_card();
    bj->dealer_total += bj->dealer_cards[1].value;
    draw_card(bj->dealer_cards[1], true, dealer_x + CARD_WIDTH + 4, dealer_y);

    bj->player_cards[0][0] = new_card();
    bj->player_total += bj->player_cards[0][0].value;
    draw_card(bj->player_cards[0][0], true, player_x, player_y);
    player_x += CARD_WIDTH + 4;

    bj->player_cards[0][1] = new_card();
    bj->player_total += bj->player_cards[0][1].value;
    draw_card(bj->player_cards[0][1], true, player_x, player_y);
    player_x += CARD_WIDTH + 4;    
}

/*****************************************************************************
* redraw_board() redraws all the cards and the board
******************************************************************************/
static void redraw_board(struct game_context* bj) {
    unsigned int i, n, upper_bound;
    rb->lcd_clear_display();

    blackjack_drawtable(bj);
    player_x = 4;
    dealer_x = 4;
    upper_bound = bj->split_status > 1 ? 2 : 1;

    for (i = 0; i < bj->num_dealer_cards; i++) {
        if (!bj->end_hand) {
            draw_card(bj->dealer_cards[0], false, dealer_x, dealer_y);

            /* increment i so the dealer's first card isn't displayed */
            i++;
            dealer_x += CARD_WIDTH + 4;
        }
        draw_card(bj->dealer_cards[i], true, dealer_x, dealer_y);
        
        if (bj->num_dealer_cards > MAX_CARDS-1)
            dealer_x += 10;
        else
            dealer_x += CARD_WIDTH + 4;
    }

    for (n = 0; n < upper_bound; n++) {
        for (i = 0; i < bj->num_player_cards[n]; i++) {
            draw_card(bj->player_cards[n][i], true, player_x, player_y);
            if (bj->split_status>1 || bj->num_player_cards[n]>MAX_CARDS)
                player_x += 10;
            else
                player_x += CARD_WIDTH + 4;                
        }
        if (bj->split_status > 1)
            player_x = LCD_WIDTH/2 + 4;
    }
}

/*****************************************************************************
* update_total updates the player's total
******************************************************************************/
static void update_total(struct game_context* bj) {
    char total[3];
    unsigned int w, h;
    rb->snprintf(total, 3, "%d", bj->player_total);
    rb->lcd_getstringsize(total, &w, &h);
#if LCD_HEIGHT > 64
    h *= 2;
#endif
    rb->lcd_putsxy(LCD_WIDTH - w, LCD_HEIGHT/2 + h, total);
    rb->lcd_update_rect(LCD_WIDTH - w, LCD_HEIGHT/2 + h, w, h);
}


/*****************************************************************************
* check_for_aces() is passed an array of cards and returns where an ace is
* located. Otherwise, returns -1.
******************************************************************************/
static signed int check_for_aces(struct card temp_cards[], 
                                 unsigned int size) {
    unsigned int i;
    for(i = 0; i < size; i++) {
        if (temp_cards[i].is_soft_ace == true)
          return i;
    }
    return -1;
}

/*****************************************************************************
* check_totals() compares player and dealer totals.
* 0: bust 1: loss, 2: push, 3: win, 4: blackjack, 5: something's not right...
******************************************************************************/
static unsigned int check_totals(struct game_context* bj)
{
    unsigned int temp;
    if (bj->player_total > 21)
      temp = 0;
    else if (bj->player_total == 21 && bj->is_blackjack)
      if (bj->dealer_total == 21 && bj->num_dealer_cards == 2)
        temp = 2;
      else
        temp = 4;
    else if (bj->player_total == bj->dealer_total)
      temp = 2;
    else if (bj->dealer_total > 21 && bj->player_total < 22)
      temp = 3;
    else if (bj->dealer_total > bj->player_total)
      temp = 1;
    else if (bj->player_total > bj->dealer_total)
      temp = 3;
    else
      temp = 5;

    return temp;
}

/*****************************************************************************
* finish_dealer() draws cards for the dealer until he has 17 or more.
******************************************************************************/
static void finish_dealer(struct game_context* bj) {
    signed int temp = 0;
    
    if (bj->dealer_total > 16 && bj->dealer_total < 22)
        return;
    
    while (bj->dealer_total < 17) {
      bj->dealer_cards[bj->num_dealer_cards] = new_card();
      bj->dealer_total += bj->dealer_cards[bj->num_dealer_cards].value;
      bj->num_dealer_cards++;
    }
    
    while (bj->dealer_total > 21) {
      temp = check_for_aces(bj->dealer_cards, bj->num_dealer_cards);
      if(temp != -1) {
        bj->dealer_cards[temp].is_soft_ace = false;
        bj->dealer_total -= 10;
      }
      else
        return;
    }
}

/*****************************************************************************
* finish_game() completes the game once player's turn is over.
******************************************************************************/
static void finish_game(struct game_context* bj) {
    unsigned int rValue, w, h;
    char str[19];

    do {
        finish_dealer(bj);
    } while (bj->dealer_total < 17);
    
    redraw_board(bj);
    rValue = check_totals(bj);

    if (rValue == 0) {
      rb->snprintf(str, sizeof(str), " Bust! ");
      bj->player_money -= bj->current_bet;
    }
    else if (rValue == 1) {
      rb->snprintf(str, sizeof(str), " Sorry, you lost. ");
      bj->player_money -= bj->current_bet;
    }
    else if (rValue == 2) {
      rb->snprintf(str, sizeof(str), " Push ");
    }
    else if (rValue == 3) {
      rb->snprintf(str, sizeof(str), " You won! ");
      bj->player_money+= bj->current_bet;
    }
    else {
      rb->snprintf(str, sizeof(str), " Blackjack! ");
      bj->player_money += bj->current_bet * 3 / 2;
    }
    rb->lcd_getstringsize(str, &w, &h);
    
#if LCD_HEIGHT <= 64
    rb->lcd_set_drawmode(DRMODE_BG+DRMODE_INVERSEVID);
    rb->lcd_fillrect(0, LCD_HEIGHT/2, LCD_WIDTH, LCD_HEIGHT/2);
    rb->lcd_set_drawmode(DRMODE_SOLID);
    rb->lcd_putsxy(LCD_WIDTH/2 - w/2, LCD_HEIGHT/2 + h, str);
    rb->snprintf(str, 12, "You have %d", bj->player_total);
    rb->lcd_getstringsize(str, &w, &h);
    rb->lcd_putsxy(LCD_WIDTH/2 - w/2, LCD_HEIGHT/2, str);
#else
    rb->lcd_putsxy(LCD_WIDTH/2 - w/2, LCD_HEIGHT/2 - h/2, str);
#endif
    rb->lcd_update();
}

/*****************************************************************************
* blackjack_recordscore() inserts a high score into the high scores list and
*     returns the high score position.
******************************************************************************/
static unsigned int blackjack_recordscore(struct game_context* bj) {
    unsigned int i;
    unsigned int position = 0;
    signed short current, temp;

    /* calculate total score */
    current = bj->player_money;
    if(current <= 10) return 0;

    /* insert the current score into the high scores */
    for(i=0; i<NUM_SCORES; i++) {
        if(current >= bj->highscores[i]) {
            if(!position) {
                position = i+1;
                bj->dirty = true;
            }
            temp = bj->highscores[i];
            bj->highscores[i] = current;
            current = temp;
        }
    }

    return position;
}

/*****************************************************************************
* blackjack_loadscores() loads the high scores saved file.
******************************************************************************/
static void blackjack_loadscores(struct game_context* bj) {
    signed int fd;

    bj->dirty = false;

    /* clear high scores */
    rb->memset(bj->highscores, 0, sizeof(bj->highscores));

    /* open scores file */
    fd = rb->open(SCORE_FILE, O_RDONLY);
    if(fd < 0) return;

    /* read in high scores */
    if(rb->read(fd, bj->highscores, sizeof(bj->highscores)) <= 0) {
        /* scores are bad, reset */
        rb->memset(bj->highscores, 0, sizeof(bj->highscores));
    }

    rb->close(fd);
}

/*****************************************************************************
* blackjack_savescores() saves the high scores saved file.
******************************************************************************/
static void blackjack_savescores(struct game_context* bj) {
    unsigned int fd;

    /* write out the high scores to the save file */
    fd = rb->open(SCORE_FILE, O_WRONLY|O_CREAT);
    rb->write(fd, bj->highscores, sizeof(bj->highscores));
    rb->close(fd);
    bj->dirty = false;
}

/*****************************************************************************
* blackjack_loadgame() loads the saved game and returns load success.
******************************************************************************/
static bool blackjack_loadgame(struct game_context* bj) {
    signed int fd;
    bool loaded = false;

    /* open game file */
    fd = rb->open(SAVE_FILE, O_RDONLY);
    if(fd < 0) return loaded;

    /* read in saved game */
    while(true) {
        if(rb->read(fd, &bj->player_money, sizeof(bj->player_money)) <= 0) break;
        if(rb->read(fd, &bj->player_total, sizeof(bj->player_total)) <= 0) break;
        if(rb->read(fd, &bj->dealer_total, sizeof(bj->dealer_total)) <= 0) break;
        if(rb->read(fd, &bj->num_player_cards, sizeof(bj->num_player_cards))<=0)
            break;
        if(rb->read(fd, &bj->num_dealer_cards, sizeof(bj->num_dealer_cards))<=0)
            break;
        if(rb->read(fd, &bj->current_bet, sizeof(bj->current_bet)) <= 0) break;
        if(rb->read(fd, &bj->is_blackjack, sizeof(bj->is_blackjack)) <= 0) break;
        if(rb->read(fd, &bj->split_status, sizeof(bj->split_status)) <= 0) break;
        if(rb->read(fd, &bj->asked_insurance, sizeof(bj->asked_insurance)) <= 0)
            break;
        if(rb->read(fd, &bj->end_hand, sizeof(bj->end_hand)) <= 0) break;
        if(rb->read(fd, &bj->player_cards, sizeof(bj->player_cards)) <= 0) break;
        if(rb->read(fd, &bj->dealer_cards, sizeof(bj->dealer_cards)) <= 0) break;
        bj->resume = true;
        loaded = true;
        break;
    }

    rb->close(fd);

    /* delete saved file */
    rb->remove(SAVE_FILE);
    return loaded;
}

/*****************************************************************************
* blackjack_savegame() saves the current game state.
******************************************************************************/
static void blackjack_savegame(struct game_context* bj) {
    unsigned int fd;

    /* write out the game state to the save file */
    fd = rb->open(SAVE_FILE, O_WRONLY|O_CREAT);
    rb->write(fd, &bj->player_money, sizeof(bj->player_money));
    rb->write(fd, &bj->player_total, sizeof(bj->player_total));
    rb->write(fd, &bj->dealer_total, sizeof(bj->dealer_total));
    rb->write(fd, &bj->num_player_cards, sizeof(bj->num_player_cards));
    rb->write(fd, &bj->num_dealer_cards, sizeof(bj->num_dealer_cards));
    rb->write(fd, &bj->current_bet, sizeof(bj->current_bet));
    rb->write(fd, &bj->is_blackjack, sizeof(bj->is_blackjack));
    rb->write(fd, &bj->split_status, sizeof(bj->split_status));
    rb->write(fd, &bj->asked_insurance, sizeof(bj->asked_insurance));
    rb->write(fd, &bj->end_hand, sizeof(bj->end_hand));
    rb->write(fd, &bj->player_cards, sizeof(bj->player_cards));
    rb->write(fd, &bj->dealer_cards, sizeof(bj->dealer_cards));
    rb->close(fd);

    bj->resume = true;
}

/*****************************************************************************
* blackjack_callback() is the default event handler callback which is called
*     on usb connect and shutdown.
******************************************************************************/
static void blackjack_callback(void* param) {
    struct game_context* bj = (struct game_context*) param;
    if(bj->dirty) {
        rb->splash(HZ, "Saving high scores...");
        blackjack_savescores(bj);
    }
}

/*****************************************************************************
* blackjack_get_yes_no() gets a yes/no answer from the user
******************************************************************************/
static unsigned int blackjack_get_yes_no(char message[20]) {
    int button;
    unsigned int w, h, b, choice = 0;
    bool breakout = false;
    char message_yes[24], message_no[24];

    rb->strcpy(message_yes, message);
    rb->strcpy(message_no, message);
    rb->strcat(message_yes, " Yes");
    rb->strcat(message_no, "  No");
    rb->lcd_getstringsize(message_yes, &w, &h);
    const char *stg[] = {message_yes, message_no};
    
#if LCD_HEIGHT <= 64
    b = 2*h+1;
#else
    b = h-1;
#endif

#ifdef HAVE_LCD_COLOR
    rb->lcd_fillrect(LCD_WIDTH/2 - w/2, LCD_HEIGHT/2 + b, w+1, h+3);
    rb->lcd_set_foreground(LCD_BLACK);
    rb->lcd_set_background(LCD_WHITE);
#else
    rb->lcd_set_drawmode(DRMODE_BG+DRMODE_INVERSEVID);
    rb->lcd_fillrect(LCD_WIDTH/2 - w/2, LCD_HEIGHT/2 + b, w+1, h+3);
    rb->lcd_set_drawmode(DRMODE_SOLID);
#endif
    rb->lcd_drawrect(LCD_WIDTH/2 - w/2 - 1, LCD_HEIGHT/2 + b - 1, w+3, h+4);
    
    while(!breakout) {
        rb->lcd_putsxy(LCD_WIDTH/2 - w/2, LCD_HEIGHT/2 + b +1, stg[choice]);
        rb->lcd_update_rect(LCD_WIDTH/2 - w/2 - 1, LCD_HEIGHT/2 + b -1, 
                            w+3, h+4);
        button = rb->button_get(true);

        switch(button) {
            case BJACK_LEFT:
            case (BJACK_LEFT|BUTTON_REPEAT):
            case BJACK_RIGHT:
            case (BJACK_RIGHT|BUTTON_REPEAT):
                choice ^= 1;
                break;
            case BJACK_START: breakout = true;
                break;
            case BJACK_QUIT: breakout = true;
                choice = BJ_QUIT;
                break;
        }
    }
    
#if LCD_DEPTH > 1
    rb->lcd_set_foreground(FG_COLOR);
    rb->lcd_set_background(BG_COLOR);
#endif
    return choice;
}

/*****************************************************************************
* blackjack_get_amount() gets an amount from the player to be used
******************************************************************************/
static signed int blackjack_get_amount(char message[20], signed int lower_limit, 
                                       signed int upper_limit, 
                                       signed int start) {
    int button;
    char str[6];
    bool changed = false;
    unsigned int w, h;
    signed int amount;
    
    rb->lcd_getstringsize("A", &w, &h); /* find the size of one character */
    
    if (start > upper_limit)
        amount = upper_limit;
    else if (start < lower_limit)
        amount = lower_limit;
    else
        amount = start;

#if LCD_DEPTH > 1
    rb->lcd_set_background(LCD_WHITE);
    rb->lcd_set_foreground(LCD_BLACK);
#endif

#if LCD_HEIGHT <= 64
    rb->lcd_clear_display();
    rb->lcd_puts(0, 1, message);
    rb->snprintf(str, 9, "$%d", amount);
    rb->lcd_puts(0, 2, str);
    rb->lcd_puts(0, 3, "RIGHT: +1");
    rb->lcd_puts(0, 4, "LEFT:  -1");
    rb->lcd_puts(0, 5, "UP:   +10");
    rb->lcd_puts(0, 6, "DOWN: -10");
    rb->lcd_update();
#else
    rb->lcd_set_drawmode(DRMODE_BG+DRMODE_INVERSEVID);
    rb->lcd_fillrect(LCD_WIDTH/2 - 9*w - 1, LCD_HEIGHT/2 - 4*h - 3, 37*w / 2, 
                     8*h -3);
    rb->lcd_set_drawmode(DRMODE_SOLID);
    rb->lcd_drawrect(LCD_WIDTH/2 - 9*w - 1, LCD_HEIGHT/2 - 4*h - 3, 37*w / 2, 
                     8*h -3);
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 4*h - 1, message);
    rb->snprintf(str, 9, "$%d", amount);
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 3*h, str);
#if (CONFIG_KEYPAD == IPOD_4G_PAD) || \
      (CONFIG_KEYPAD == IPOD_3G_PAD) || \
      (CONFIG_KEYPAD == IPOD_1G2G_PAD)
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - h-2, " >>|:     +1");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 1, " |<<:     -1");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 + h, "SCROLL+: +10");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 + 2*h + 1, "SCROLL-: -10");
#elif CONFIG_KEYPAD == IRIVER_H10_PAD
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - h-2, "RIGHT:    +1");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 1, "LEFT:     -1");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 + h, "SCROLL+: +10");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 + 2*h + 1, "SCROLL-: -10");
#else
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - h-2, "RIGHT: +1");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 1, "LEFT:  -1");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 + h, "UP:   +10");
    rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 + 2*h + 1, "DOWN: -10");
#endif
    rb->lcd_update_rect(LCD_WIDTH/2 - 9*w - 2, LCD_HEIGHT/2 - 9*h/2, 37*w/2 + 1,
                        8*h-2);
#endif
    
    while(true) {
        button = rb->button_get(true);

        switch(button) {
            case BJACK_UP:
            case (BJACK_UP|BUTTON_REPEAT):
            if (amount + 10 < upper_limit + 1) {
                    amount += 10;
                    changed = true;
            }
            break;
            case BJACK_DOWN:
            case (BJACK_DOWN|BUTTON_REPEAT):
                if (amount - 10 > lower_limit - 1) {
                    amount -= 10;
                    changed = true;
                }
                break;
            case BJACK_RIGHT:
            case (BJACK_RIGHT|BUTTON_REPEAT):
                if (amount + 1 < upper_limit + 1) {
                    amount++;
                    changed = true;
                }
                break;
            case BJACK_LEFT:
            case (BJACK_LEFT|BUTTON_REPEAT):
                if (amount - 1 > lower_limit - 1) {
                    amount--;
                    changed = true;
                }
                break;
            case BJACK_MAX :
                amount = upper_limit;
                changed = true;
                break;
            case BJACK_MIN :
                amount = lower_limit;
                changed = true;
                break;
            case BJACK_QUIT:
                return 0;
            case BJACK_START:
#if LCD_DEPTH > 1
                rb->lcd_set_foreground(FG_COLOR);
                rb->lcd_set_background(BG_COLOR);
#endif
                rb->lcd_clear_display();
                return amount;
       }

       if(changed) {
            rb->snprintf(str, 9, "$%d", amount);
#if LCD_HEIGHT <= 64
            rb->lcd_puts(0, 2, str);
            rb->lcd_update();
#else
            rb->lcd_set_drawmode(DRMODE_BG+DRMODE_INVERSEVID);
            rb->lcd_fillrect(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 3*h, 5*w, h);
            rb->lcd_set_drawmode(DRMODE_SOLID);
            rb->lcd_putsxy(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 3*h, str);
            rb->lcd_update_rect(LCD_WIDTH/2 - 9*w, LCD_HEIGHT/2 - 3*h, 5*w, h);
#endif
            changed = false;
        }
    }
}

/*****************************************************************************
* blackjack_get_bet() gets the player's bet.
******************************************************************************/
static void blackjack_get_bet(struct game_context* bj) {
    bj->current_bet = blackjack_get_amount("Please enter a bet", 10, 
                                           bj->player_money, bj->current_bet);
}

/*****************************************************************************
* double_down() returns one final card then finishes the game
******************************************************************************/
static void double_down(struct game_context* bj) {
    bj->current_bet *= 2;
    bj->player_cards[0][bj->num_player_cards[0]] = new_card();
    bj->player_total += bj->player_cards[0][bj->num_player_cards[0]].value;
    bj->num_player_cards[0]++;
}

/*****************************************************************************
* split() checks if the player wants to split and acts accordingly.
* When bj->split_status is 1, no split occurred. 2 means the player split and 3
* means a split has already occurred and the first hand is done.
******************************************************************************/
static void split(struct game_context* bj) {
    if (blackjack_get_yes_no("Split?") == 1)
        bj->split_status = 1;
    else {
        bj->split_status = 2;
        bj->current_bet *= 2;
        bj->num_player_cards[0] = 1;
        bj->num_player_cards[1] = 1;
        bj->player_cards[1][0] = bj->player_cards[0][1];
        bj->player_total = bj->player_cards[0][0].value;
    }
}

/*****************************************************************************
* insurance() see if the player wants to buy insurance and how much.
******************************************************************************/
static unsigned int insurance(struct game_context* bj) {
    unsigned int insurance, max_amount; 
    
    insurance = blackjack_get_yes_no("Buy Insurance?");
    bj->asked_insurance = true;
    max_amount = bj->current_bet < (unsigned int)bj->player_money ? 
                            bj->current_bet/2 : (unsigned int)bj->player_money;
    if (insurance == 1) return 0;

    insurance = blackjack_get_amount("How much?", 0, max_amount, 0);
    redraw_board(bj);
    return insurance;
}

/*****************************************************************************
* play_again() checks to see if the player wants to keep playing.
******************************************************************************/
static unsigned int play_again(void) {
    return blackjack_get_yes_no("Play Again?");
}

/*****************************************************************************
* blackjack_menu() is the initial menu at the start of the game.
******************************************************************************/
static unsigned int blackjack_menu(struct game_context* bj) {
    int button;
    char *title = "Blackjack";
    char str[18];
    unsigned int i, w, h;
    bool breakout = false;
    bool showscores = false;
    
    while(true){
#if LCD_DEPTH > 1
        rb->lcd_set_background(BG_COLOR);
        rb->lcd_set_foreground(FG_COLOR);
#endif
        rb->lcd_clear_display();

        if(!showscores) {
             /* welcome screen to display key bindings */
            rb->lcd_getstringsize(title, &w, &h);
            rb->lcd_putsxy((LCD_WIDTH-w)/2, 0, title);

#if CONFIG_KEYPAD == RECORDER_PAD
            rb->lcd_puts(0, 1, "ON: start");
            rb->lcd_puts(0, 2, "OFF: exit");
            rb->lcd_puts(0, 3, "F1: hit");
            rb->lcd_puts(0, 4, "F2: stay");
            rb->lcd_puts(0, 5, "F3: double down");
            rb->lcd_puts(0, 6, "PLAY: save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 7, str);
#elif CONFIG_KEYPAD == ONDIO_PAD
            rb->lcd_puts(0, 1, "MENU: start");
            rb->lcd_puts(0, 2, "OFF: exit");
            rb->lcd_puts(0, 3, "LEFT: hit");
            rb->lcd_puts(0, 4, "RIGHT: stay");
            rb->lcd_puts(0, 5, "UP: double down");
            rb->lcd_puts(0, 6, "DOWN: save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 7, str);
#elif (CONFIG_KEYPAD == IRIVER_H100_PAD) || (CONFIG_KEYPAD == IRIVER_H300_PAD)
            rb->lcd_puts(0, 2, "PLAY to start & to hit");
            rb->lcd_puts(0, 3, "STOP to exit");
            rb->lcd_puts(0, 4, "REC to stay");
            rb->lcd_puts(0, 5, "NAVI to double down ");
            rb->lcd_puts(0, 6, "  & to view highscores");
            rb->lcd_puts(0, 7, "AB to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 8, str);
#elif CONFIG_KEYPAD == IRIVER_H10_PAD
            rb->lcd_puts(0, 2, "PLAY to start & hit");
            rb->lcd_puts(0, 3, "POWER to exit");
            rb->lcd_puts(0, 4, ">>| to stay");
            rb->lcd_puts(0, 5, "|<< to double down");
            rb->lcd_puts(0, 6, "LEFT to view scores");
            rb->lcd_puts(0, 7, "RIGHT to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 8, str);

#elif (CONFIG_KEYPAD == IPOD_4G_PAD) || \
      (CONFIG_KEYPAD == IPOD_3G_PAD) || \
      (CONFIG_KEYPAD == IPOD_1G2G_PAD)
#if LCD_WIDTH >=176
            rb->lcd_puts(0, 2, "SELECT to start & to hit");
            rb->lcd_puts(0, 3, "MENU to exit");
            rb->lcd_puts(0, 4, ">>| to stay & to view highscores");
            rb->lcd_puts(0, 5, "|<< to double down");
            rb->lcd_puts(0, 6, "PLAY to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 7, str);
#else
            rb->lcd_puts(0, 2, "SELECT to start & to ");
            rb->lcd_puts(0, 3, "  hit");
            rb->lcd_puts(0, 4, "MENU to exit");
            rb->lcd_puts(0, 5, ">>| to stay & to view ");
            rb->lcd_puts(0, 6, "  highscores");
            rb->lcd_puts(0, 7, "|<< to double down");
            rb->lcd_puts(0, 8, "PLAY to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#endif
#elif CONFIG_KEYPAD == IAUDIO_X5M5_PAD
            rb->lcd_puts(0, 2, "PLAY to start to hit");
            rb->lcd_puts(0, 3, "POWER to exit");
            rb->lcd_puts(0, 4, "SELECT to hit");
            rb->lcd_puts(0, 5, "REC to stay");
            rb->lcd_puts(0, 6, "PLAY to double down");
            rb->lcd_puts(0, 7, "RIGHT to view highscores ");
            rb->lcd_puts(0, 8, "DOWN to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#elif CONFIG_KEYPAD == IRIVER_IFP7XX_PAD
            rb->lcd_puts(0, 2, "AB to start & to");
            rb->lcd_puts(0, 3, "  stay");
            rb->lcd_puts(0, 4, "EQ to hit");
            rb->lcd_puts(0, 5, "PLAY to exit");
            rb->lcd_puts(0, 6, "CLICK to double down");
            rb->lcd_puts(0, 7, "& to view highscores");
            rb->lcd_puts(0, 8, "AB+EQ to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#elif CONFIG_KEYPAD == GIGABEAT_PAD
            rb->lcd_puts(0, 2, "A to start");
            rb->lcd_puts(0, 3, "POWER to exit");
            rb->lcd_puts(0, 4, "VOL+ to hit");
            rb->lcd_puts(0, 5, "VOL- to stay");
            rb->lcd_puts(0, 6, "SELECT to double down");
            rb->lcd_puts(0, 7, "RIGHT to view highscores ");
            rb->lcd_puts(0, 8, "MENU to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#elif CONFIG_KEYPAD == GIGABEAT_S_PAD
            rb->lcd_puts(0, 2, "PLAY to start");
            rb->lcd_puts(0, 3, "BACK to exit");
            rb->lcd_puts(0, 4, "VOL+ to hit");
            rb->lcd_puts(0, 5, "VOL- to stay");
            rb->lcd_puts(0, 6, "SELECT to double down");
            rb->lcd_puts(0, 7, "RIGHT to view highscores ");
            rb->lcd_puts(0, 8, "MENU to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#elif CONFIG_KEYPAD == MROBE100_PAD
            rb->lcd_puts(0, 2, "SELECT to start");
            rb->lcd_puts(0, 3, "POWER to exit");
            rb->lcd_puts(0, 4, "MENU to hit");
            rb->lcd_puts(0, 5, "DISPLAY to stay");
            rb->lcd_puts(0, 6, "DOWN to double down");
            rb->lcd_puts(0, 7, "RIGHT to view highscores ");
            rb->lcd_puts(0, 8, "PLAY to save/resume");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#elif (CONFIG_KEYPAD == SANSA_E200_PAD)
            rb->lcd_puts(0, 2, "SELECT to start & to hit");
            rb->lcd_puts(0, 3, "POWER to exit");
            rb->lcd_puts(0, 4, "RIGHT to stay");
            rb->lcd_puts(0, 5, "LEFT to double down");
            rb->lcd_puts(0, 6, "REC to save/resume");
            rb->lcd_puts(0, 7, "UP to view scores");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 8, str);
#elif (CONFIG_KEYPAD == SANSA_C200_PAD)
            rb->lcd_puts(0, 2, "SELECT to start & to hit");
            rb->lcd_puts(0, 3, "POWER to exit");
            rb->lcd_puts(0, 4, "RIGHT to stay");
            rb->lcd_puts(0, 5, "LEFT to double down");
            rb->lcd_puts(0, 6, "DOWN to save/resume");
            rb->lcd_puts(0, 7, "REC to view scores");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 9, str);
#elif CONFIG_KEYPAD == IAUDIO_M3_PAD
            rb->lcd_puts(0, 2, "PLAY to start & to");
            rb->lcd_puts(0, 3, "  hit");
            rb->lcd_puts(0, 4, "REC to exit");
            rb->lcd_puts(0, 5, "FF to stay");
            rb->lcd_puts(0, 6, "REW to double down");
            rb->lcd_puts(0, 7, "MODE to save/resume");
            rb->lcd_puts(0, 8, "MENU to view scores");
            rb->snprintf(str, 21, "High Score: $%d", bj->highscores[0]);
            rb->lcd_puts(0, 10, str);
#elif CONFIG_KEYPAD == COWOND2_PAD
            rb->lcd_puts(0, 6, "POWER           to exit");
            rb->lcd_puts(0, 7, "MINUS           to double down");
            rb->lcd_puts(0, 8, "MENU            to view scores");
            rb->snprintf(str, 21, "High Score:     $%d", bj->highscores[0]);
            rb->lcd_puts(0, 10, str);
#endif

#ifdef HAVE_TOUCHSCREEN
            rb->lcd_puts(0, 2, "LCD CENTRE      to start & to hit");
            rb->lcd_puts(0, 3, "LCD BOTTOMLEFT  to stay");
            rb->lcd_puts(0, 4, "LCD BOTTOMRIGHT to save/resume");
#endif
        } else {
            rb->snprintf(str, 12, "%s", "High Scores");
            rb->lcd_getstringsize(str, &w, &h);
            rb->lcd_putsxy((LCD_WIDTH-w)/2, 0, str);

            /* print high scores */
            for(i=0; i<NUM_SCORES; i++) {
                rb->snprintf(str, 14, "#%02d: $%d", i+1, bj->highscores[i]);
                rb->lcd_puts(0, i+1, str);
            }
        }

        rb->lcd_update();

        /* handle menu button presses */
        button = rb->button_get(true);

        switch(button) {
            case BJACK_START: /* start playing */
                breakout = true;
                break;

            case BJACK_QUIT:  /* quit program */
                if(showscores) {
                    showscores = 0;
                    break;
                }
                return BJ_QUIT;

            case BJACK_RESUME:/* resume game */
                if(!blackjack_loadgame(bj)) {
                    rb->splash(HZ*2, "Nothing to resume");
                } else {
                    rb->splash(HZ*2, "Loading...");
                    breakout = true;
                }
                break;

            case BJACK_SCORES:/* toggle high scores */
                showscores = !showscores;
                break;

            default:
                if(rb->default_event_handler_ex(button, blackjack_callback,
                   (void*) bj) == SYS_USB_CONNECTED)
                    return BJ_USB;
                break;
        }

        if(breakout) break;
    }

    return(0);
}

/*****************************************************************************
* blackjack() is the main game subroutine, it returns the final game status.
******************************************************************************/
static int blackjack(struct game_context* bj) {
    int button;
    unsigned int w, h, temp_var, done = 0, todo = 1;
    signed int temp;
    bool breakout = false;
    bool dbl_down = false;

    /* don't resume by default */
    bj->resume = false;

    /********************
    *       menu        *
    ********************/
    temp_var = blackjack_menu(bj);
    if (temp_var == BJ_QUIT || temp_var == BJ_USB)
        return temp_var;


    /********************
    *       init        *
    ********************/
    blackjack_init(bj);
    bj->current_bet=10;

    /********************
    *       play        *
    ********************/

    /* check for resumed game */
    if(bj->resume) {
        bj->resume = false;
        redraw_board(bj);
        if (bj->split_status == 2) {
          todo=2;
          player_x = bj->num_player_cards[0] * 10 + 4;
        }
        else if (bj->split_status == 3) {
          player_x = bj->num_player_cards[1] * 10 + LCD_WIDTH/2 + 4;
          todo=2;
          done=1;
        }

    }
    else {
        bj->player_money = 1000;
        blackjack_get_bet(bj);
        if (bj->current_bet == 0)
            return BJ_QUIT;
        rb->lcd_clear_display();
        deal_init_cards(bj);
        blackjack_drawtable(bj);
    }

    rb->lcd_update();

    breakout = false;

    while(true){
        if(bj->player_total == 21 && bj->num_player_cards[0] == 2) {
            bj->is_blackjack = true;
            bj->end_hand = true;
            finish_game(bj);
        }
        else if(bj->dealer_cards[1].is_soft_ace && !breakout && 
                !bj->asked_insurance) {
            temp_var = insurance(bj);
            if (bj->dealer_total == 21) {
                rb->splash(HZ, "Dealer has blackjack");
                bj->player_money += temp_var;
                bj->end_hand = true;
                breakout = true;
                redraw_board(bj);
                finish_game(bj);
            }
            else {
                rb->splash(HZ, "Dealer does not have blackjack");
                bj->player_money -= temp_var;
                breakout = true;
                redraw_board(bj);
                rb->lcd_update();
            }
        }
        if(!bj->end_hand && bj->split_status == 0 && 
           bj->player_cards[0][0].num == bj->player_cards[0][1].num) {
            split(bj);
            redraw_board(bj);
            rb->lcd_update_rect(0, LCD_HEIGHT/2, LCD_WIDTH, LCD_HEIGHT/2);
            if (bj->split_status == 2) {
                todo++;
                player_x = bj->num_player_cards[0] * 10 + 4;
            }
        }

        while(!bj->end_hand && done < todo) {
            button = rb->button_get(true);

            switch(button) {
                case BJACK_HIT:
                    NEXT_CARD = new_card();
                    bj->player_total += NEXT_CARD.value;
                    draw_card(NEXT_CARD, true, player_x, player_y);
                    bj->num_player_cards[done]++;
                    if (bj->num_player_cards[done] == MAX_CARDS + 1) {
                        redraw_board(bj);
                        rb->lcd_update_rect(0, LCD_HEIGHT/2, LCD_WIDTH, 
                                            LCD_HEIGHT/2);
                    }
                    else if (bj->num_player_cards[done]>MAX_CARDS || todo > 1) {
                        rb->lcd_update_rect(player_x, player_y, CARD_WIDTH+2, 
                                            CARD_HEIGHT+2);
                        player_x += 10;
                    }
                    else {
                        rb->lcd_update_rect(player_x, player_y, CARD_WIDTH+2, 
                                            CARD_HEIGHT+2);
                        player_x += CARD_WIDTH + 4;
                    }
                    update_total(bj);

                    break;
                case BJACK_STAY:
                    bj->end_hand = true;
                    break;
                case BJACK_DOUBLEDOWN:
                    if ((signed int)bj->current_bet * 2 < bj->player_money + 1 && 
                         bj->num_player_cards[0]==2 && todo==1) {
                        double_down(bj);
                        dbl_down = true;
                        if (bj->player_total < 22) {
                            bj->end_hand = true;
                            finish_game(bj);
                        }
                    }
                    else if((signed int)bj->current_bet * 2 > bj->player_money) {
                        rb->splash(HZ, "Not enough money to double down.");
                        redraw_board(bj);
                        rb->lcd_update();
                    }
                    break;
                case BJACK_RESUME:           /* save and end game */
                    rb->splash(HZ, "Saving game...");
                    blackjack_savegame(bj);
                    /* fall through to BJACK_QUIT */

                case BJACK_QUIT:
                    return BJ_END;
            }

            while (bj->player_total > 21 && !bj->end_hand) {
                temp = check_for_aces(bj->player_cards[done], 
                                      bj->num_player_cards[done]);
                if(temp != -1) {
                    bj->player_cards[done][temp].is_soft_ace = false;
                    bj->player_total -= 10;
                    update_total(bj);
                    if (dbl_down) {
                        bj->end_hand = true;
                        finish_game(bj);
                    }
                }
                else
                    bj->end_hand = true;
            }
            
            if (bj->end_hand) {
                done++;
                if(todo > 1) {
                    if (done == 2) {
                        temp = bj->player_total;
                        bj->player_total = temp_var;
                        temp_var = temp;
                        finish_game(bj);
                        rb->lcd_getstringsize(" Split 1 ", &w, &h);
                        rb->lcd_putsxy(LCD_WIDTH/2-w/2, LCD_HEIGHT/2-3*h/2,
                                       " Split 1 ");
                        rb->lcd_update_rect(LCD_WIDTH/2-w/2, LCD_HEIGHT/2-3*h/2,
                                            w,h);
                        bj->current_bet /= 2;
                        rb->lcd_update_rect(LCD_WIDTH/2-w/2, LCD_HEIGHT/2-3*h/2,
                                            w,h);
                        rb->sleep(HZ*2);                      
                        bj->player_total = temp_var;
                        finish_game(bj);
                        rb->lcd_getstringsize(" Split 2 ", &w, &h);
                        rb->lcd_putsxy(LCD_WIDTH/2-w/2, LCD_HEIGHT/2-3*h/2,
                                       " Split 2 ");
                        rb->lcd_update_rect(LCD_WIDTH/2-w/2, LCD_HEIGHT/2-3*h/2,
                                            w,h);
                        rb->sleep(HZ*2);
                    }
                    else {
                        bj->end_hand = false;
                        bj->split_status = 3;
                        temp_var = bj->player_total;
                        bj->player_total = bj->player_cards[1][0].value;
                        update_total(bj);
                        redraw_board(bj);
                        player_x += 10;
                        rb->lcd_update();
                    }
                }                
                else
                    finish_game(bj);
            }
        }

        if (bj->player_money < 10) {
            rb->sleep(HZ);
            return BJ_LOSE;
        }

        if (bj->end_hand) {                     /* If hand is over */
            if (play_again() != 0)              /* User wants to quit */
                return BJ_END;
            else {                              /* User keeps playing */
                breakout = false;
                redraw_board(bj);
                if(dbl_down) {
                    bj->current_bet /= 2;
                    dbl_down = false;
                }
                done = 0;
                todo = 1;
                blackjack_init(bj);
                blackjack_get_bet(bj);
                if (bj->current_bet == 0)
                    return BJ_END;
                deal_init_cards(bj);
                blackjack_drawtable(bj);
                rb->lcd_update();
            }
        }        
    }
    /* Never reached */
    return PLUGIN_OK;
}

/*****************************************************************************
* plugin entry point.
******************************************************************************/
enum plugin_status plugin_start(const void* parameter)
{
    struct game_context bj;
    bool exit = false;
    unsigned int position;
    char str[19];

    (void)parameter;

#if LCD_DEPTH > 1
    rb->lcd_set_backdrop(NULL);
#endif

    /* load high scores */
    blackjack_loadscores(&bj);

    rb->lcd_setfont(FONT_SYSFIXED);

    while(!exit) {
        switch(blackjack(&bj)){
            case BJ_LOSE:
                rb->splash(HZ, "Not enough money to continue");
                /* fall through to BJ_END */

            case BJ_END:
                if(!bj.resume) {
                    if((position = blackjack_recordscore(&bj))) {
                        rb->snprintf(str, 19, "New high score #%d!", position);
                        rb->splash(HZ*2, str);
                    }
                }
                break;

            case BJ_USB:
                rb->lcd_setfont(FONT_UI);
                return PLUGIN_USB_CONNECTED;

            case BJ_QUIT:
                if(bj.dirty) {
                    rb->splash(HZ, "Saving high scores...");
                    blackjack_savescores(&bj);
                }
                exit = true;
                break;

            default:
                break;
        }
    }

    rb->lcd_setfont(FONT_UI);
    return PLUGIN_OK;
}
generated by cgit v1.1 at 2026-05-18 23:04:47 +0000