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--[[
__________ __ ___.
Open \______ \ ____ ____ | | _\_ |__ _______ ___
Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
\/ \/ \/ \/ \/
$Id$
Port of Chain Reaction (which is based on Boomshine) to Rockbox in Lua.
See http://www.yvoschaap.com/chainrxn/ and http://www.k2xl.com/games/boomshine/
Copyright (C) 2009 by Maurus Cuelenaere
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.
]]--
require "actions"
local CYCLETIME = rb.HZ / 50
local HAS_TOUCHSCREEN = rb.action_get_touchscreen_press ~= nil
local DEFAULT_BALL_SIZE = rb.LCD_HEIGHT > rb.LCD_WIDTH and rb.LCD_WIDTH / 30
or rb.LCD_HEIGHT / 30
local MAX_BALL_SPEED = DEFAULT_BALL_SIZE / 2
local DEFAULT_FOREGROUND_COLOR = rb.lcd_get_foreground ~= nil
and rb.lcd_get_foreground()
or 0
local levels = {
-- {GOAL, TOTAL_BALLS},
{1, 5},
{2, 10},
{4, 15},
{6, 20},
{10, 25},
{15, 30},
{18, 35},
{22, 40},
{30, 45},
{37, 50},
{48, 55},
{55, 60}
}
local Ball = {
size = DEFAULT_BALL_SIZE,
exploded = false,
implosion = false
}
function Ball:new(o)
if o == nil then
o = {
x = math.random(0, rb.LCD_WIDTH - self.size),
y = math.random(0, rb.LCD_HEIGHT - self.size),
color = random_color(),
up_speed = Ball:generateSpeed(),
right_speed = Ball:generateSpeed(),
explosion_size = math.random(2*self.size, 4*self.size),
life_duration = math.random(rb.HZ, rb.HZ*5)
}
end
setmetatable(o, self)
self.__index = self
return o
end
function Ball:generateSpeed()
local speed = math.random(-MAX_BALL_SPEED, MAX_BALL_SPEED)
if speed == 0 then
speed = 1 -- Make sure all balls move
end
return speed
end
function Ball:draw()
--[[
I know these aren't circles, but as there's no current circle
implementation in Rockbox, rectangles will just do fine (drawing
circles from within Lua is far too slow).
]]--
set_foreground(self.color)
rb.lcd_fillrect(self.x, self.y, self.size, self.size)
end
function Ball:step()
if self.exploded then
if self.implosion and self.size > 0 then
self.size = self.size - 2
self.x = self.x + 1 -- We do this because we want to stay centered
self.y = self.y + 1
elseif self.size < self.explosion_size then
self.size = self.size + 2
self.x = self.x - 1 -- We do this for the same reasons as above
self.y = self.y - 1
end
return
end
self.x = self.x + self.right_speed
self.y = self.y + self.up_speed
if (self.right_speed > 0 and self.x + self.size >= rb.LCD_WIDTH) or
(self.right_speed < 0 and self.x <= 0) then
self.right_speed = -self.right_speed
end
if (self.up_speed > 0 and self.y + self.size >= rb.LCD_HEIGHT) or
(self.up_speed < 0 and self.y <= 0) then
self.up_speed = -self.up_speed
end
end
function Ball:checkHit(other)
if (other.x + other.size >= self.x) and (self.x + self.size >= other.x) and
(other.y + other.size >= self.y) and (self.y + self.size >= other.y) then
assert(not self.exploded)
self.exploded = true
self.death_time = rb.current_tick() + self.life_duration
if not other.exploded then
other.exploded = true
other.death_time = rb.current_tick() + other.life_duration
end
return true
end
return false
end
local Cursor = {
size = DEFAULT_BALL_SIZE*2,
x = rb.LCD_WIDTH/2,
y = rb.LCD_HEIGHT/2
}
function Cursor:new()
return self
end
function Cursor:do_action(action)
if action == rb.actions.ACTION_TOUCHSCREEN and HAS_TOUCHSCREEN then
_, self.x, self.y = rb.action_get_touchscreen_press()
return true
elseif action == rb.actions.ACTION_KBD_SELECT then
return true
elseif (action == rb.actions.ACTION_KBD_RIGHT) then
self.x = self.x + self.size
elseif (action == rb.actions.ACTION_KBD_LEFT) then
self.x = self.x - self.size
elseif (action == rb.actions.ACTION_KBD_UP) then
self.y = self.y - self.size
elseif (action == rb.actions.ACTION_KBD_DOWN) then
self.y = self.y + self.size
end
if self.x > rb.LCD_WIDTH then
self.x = 0
elseif self.x < 0 then
self.x = rb.LCD_WIDTH
end
if self.y > rb.LCD_HEIGHT then
self.y = 0
elseif self.y < 0 then
self.y = rb.LCD_HEIGHT
end
return false
end
function Cursor:draw()
set_foreground(DEFAULT_FOREGROUND_COLOR)
rb.lcd_hline(self.x - self.size/2, self.x - self.size/4, self.y - self.size/2)
rb.lcd_hline(self.x + self.size/4, self.x + self.size/2, self.y - self.size/2)
rb.lcd_hline(self.x - self.size/2, self.x - self.size/4, self.y + self.size/2)
rb.lcd_hline(self.x + self.size/4, self.x + self.size/2, self.y + self.size/2)
rb.lcd_vline(self.x - self.size/2, self.y - self.size/2, self.y - self.size/4)
rb.lcd_vline(self.x - self.size/2, self.y + self.size/4, self.y + self.size/2)
rb.lcd_vline(self.x + self.size/2, self.y - self.size/2, self.y - self.size/4)
rb.lcd_vline(self.x + self.size/2, self.y + self.size/4, self.y + self.size/2)
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