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/*
* xrick/scroller.c
*
* Copyright (C) 1998-2002 BigOrno (bigorno@bigorno.net).
* Copyright (C) 2008-2014 Pierluigi Vicinanza.
* All rights reserved.
*
* The use and distribution terms for this software are contained in the file
* named README, which can be found in the root of this distribution. By
* using this software in any fashion, you are agreeing to be bound by the
* terms of this license.
*
* You must not remove this notice, or any other, from this software.
*/
#include "xrick/scroller.h"
#include "xrick/game.h"
#include "xrick/debug.h"
#include "xrick/draw.h"
#include "xrick/maps.h"
#include "xrick/ents.h"
/*
* Local variables
*/
static U8 period;
/*
* Scroll up
*
*/
U8
scroll_up(void)
{
U8 i, j;
static U8 n = 0;
/* last call: restore */
if (n == 8) {
n = 0;
game_period = period;
return SCROLL_DONE;
}
/* first call: prepare */
if (n == 0) {
period = game_period;
game_period = SCROLL_PERIOD;
}
/* translate map */
for (i = MAP_ROW_SCRTOP; i < MAP_ROW_HBBOT; i++)
for (j = 0x00; j < 0x20; j++)
map_map[i][j] = map_map[i + 1][j];
/* translate entities */
for (i = 0; ent_ents[i].n != 0xFF; i++) {
if (ent_ents[i].n) {
ent_ents[i].ysave -= 8;
ent_ents[i].trig_y -= 8;
ent_ents[i].y -= 8;
if (ent_ents[i].y & 0x8000) { /* map coord. from 0x0000 to 0x0140 */
IFDEBUG_SCROLLER(
sys_printf("xrick/scroller: entity %#04X is gone\n", i);
);
ent_ents[i].n = 0;
}
}
}
/* display */
draw_map();
ent_draw();
draw_drawStatus();
map_frow++;
/* loop */
if (n++ == 7) {
/* activate visible entities */
ent_actvis(map_frow + MAP_ROW_HBTOP, map_frow + MAP_ROW_HBBOT);
/* prepare map */
map_expand();
/* display */
draw_map();
ent_draw();
draw_drawStatus();
}
game_rects = &draw_SCREENRECT;
return SCROLL_RUNNING;
}
/*
* Scroll down
*
*/
U8
scroll_down(void)
{
U8 i, j;
static U8 n = 0;
/* last call: restore */
if (n == 8) {
n = 0;
game_period = period;
return SCROLL_DONE;
}
/* first call: prepare */
if (n == 0) {
period = game_period;
game_period = SCROLL_PERIOD;
}
/* translate map */
for (i = MAP_ROW_SCRBOT; i > MAP_ROW_HTTOP; i--)
for (j = 0x00; j < 0x20; j++)
map_map[i][j] = map_map[i - 1][j];
/* translate entities */
for (i = 0; ent_ents[i].n != 0xFF; i++) {
if (ent_ents[i].n) {
ent_ents[i].ysave += 8;
ent_ents[i].trig_y += 8;
ent_ents[i].y += 8;
if (ent_ents[i].y > 0x0140) { /* map coord. from 0x0000 to 0x0140 */
IFDEBUG_SCROLLER(
sys_printf("xrick/scroller: entity %#04X is gone\n", i);
);
ent_ents[i].n = 0;
}
}
}
/* display */
draw_map();
ent_draw();
draw_drawStatus();
map_frow--;
/* loop */
if (n++ == 7) {
/* activate visible entities */
ent_actvis(map_frow + MAP_ROW_HTTOP, map_frow + MAP_ROW_HTBOT);
/* prepare map */
map_expand();
/* display */
draw_map();
ent_draw();
draw_drawStatus();
}
game_rects = &draw_SCREENRECT;
return SCROLL_RUNNING;
}
/* eof */
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