mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-22 14:33:51 +00:00
970 lines
33 KiB
C
970 lines
33 KiB
C
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#include <string.h>
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typedef unsigned char byte;
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typedef signed char sbyte;
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typedef unsigned short word;
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typedef enum { false, true } bool;
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byte __at (0x0) vidmem[152][256]; // 304x256x4bpp video memory
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byte __at (0xc000) palette[16];
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volatile byte __at (0xc804) input0;
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volatile byte __at (0xc806) input1;
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volatile byte __at (0xc80c) input2;
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byte __at (0xc80c) sound_pia;
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byte __at (0xc900) rom_select;
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volatile byte __at (0xcb00) video_counter;
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byte __at (0xcbff) watchdog0x39;
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byte __at (0xcc00) nvram[0x400];
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__sfr __at (0) debug;
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// blitter flags
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#define SRCSCREEN 0x1
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#define DSTSCREEN 0x2
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#define ESYNC 0x4
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#define FGONLY 0x8
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#define SOLID 0x10
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#define RSHIFT 0x20
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#define EVENONLY 0x40
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#define ODDONLY 0x80
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struct {
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byte flags;
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byte solid;
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word sstart;
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word dstart;
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byte width;
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byte height;
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} __at (0xca00) blitter;
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// switch flags
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#define UP1 (input0 & 0x1)
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#define DOWN1 (input0 & 0x2)
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#define LEFT1 (input0 & 0x4)
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#define RIGHT1 (input0 & 0x8)
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#define START1 (input0 & 0x10)
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#define START2 (input0 & 0x20)
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#define UP2 (input0 & 0x40)
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#define DOWN2 (input0 & 0x80)
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#define LEFT2 (input1 & 0x1)
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#define RIGHT2 (input1 & 0x2)
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#define AUTOUP (input2 & 0x1)
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#define ADVANCE (input2 & 0x2)
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#define COIN2 (input2 & 0x4)
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#define HIGHSCORERESET (input2 & 0x8)
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#define COIN1 (input2 & 0x10)
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#define COIN3 (input2 & 0x20)
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#define TILTSWITCH (input2 & 0x40)
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#define SOUNDACK (input2 & 0x80)
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#define WATCHDOG watchdog0x39=0x39;
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//
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void main();
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// start routine @ 0x0
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// set stack pointer, enable interrupts
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void start() {
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__asm
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LD SP,#0xc000
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DI
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; copy initialized data
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LD BC, #l__INITIALIZER
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LD A, B
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LD DE, #s__INITIALIZED
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LD HL, #s__INITIALIZER
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LDIR
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__endasm;
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main();
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}
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#define LOCHAR 0x20
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#define HICHAR 0x7e
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const char CH_32[] = { 0x21,0x51,0x00 };
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const char CH_33[] = { 0x21,0x55,0xf0,0xf0,0xf0,0x00,0xf0 };
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const char CH_34[] = { 0x42,0x52,0xf0,0xf0,0xf0,0xf0 };
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const char CH_35[] = { 0x42,0x55,0xf0,0xf0,0xff,0xf0,0xf0,0xf0,0xff,0xf0,0xf0,0xf0 };
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const char CH_36[] = { 0x42,0x55,0x0f,0xf0,0xff,0x00,0x0f,0xf0,0xff,0x00,0x0f,0x00 };
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const char CH_37[] = { 0x42,0x55,0xf0,0x00,0x00,0xf0,0x0f,0x00,0xf0,0x00,0x00,0xf0 };
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const char CH_38[] = { 0x42,0x55,0xff,0x00,0xff,0x00,0xff,0xf0,0xf0,0xf0,0x0f,0xf0 };
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const char CH_39[] = { 0x21,0x52,0xf0,0xf0 };
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const char CH_40[] = { 0x32,0x55,0x0f,0x00,0xf0,0x00,0xf0,0x00,0xf0,0x00,0x0f,0x00 };
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const char CH_41[] = { 0x32,0x55,0xf0,0x00,0x0f,0x00,0x0f,0x00,0x0f,0x00,0xf0,0x00 };
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const char CH_42[] = { 0x42,0x53,0xf0,0xf0,0x0f,0x00,0xf0,0xf0 };
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const char CH_43[] = { 0x42,0x43,0x0f,0x00,0xff,0xf0,0x0f,0x00 };
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const char CH_44[] = { 0x32,0x22,0x0f,0x00,0xf0,0x00 };
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const char CH_45[] = { 0x42,0x31,0xff,0xf0 };
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const char CH_46[] = { 0x21,0x11,0xf0 };
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const char CH_47[] = { 0x42,0x55,0x00,0xf0,0x00,0xf0,0x0f,0x00,0xf0,0x00,0xf0,0x00 };
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const char CH_48[] = { 0x42,0x55,0x0f,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xff,0x00 };
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const char CH_49[] = { 0x32,0x55,0x0f,0x00,0xff,0x00,0x0f,0x00,0x0f,0x00,0x0f,0x00 };
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const char CH_50[] = { 0x42,0x55,0xff,0x00,0x00,0xf0,0x0f,0x00,0xf0,0x00,0xff,0xf0 };
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const char CH_51[] = { 0x42,0x55,0xff,0x00,0x00,0xf0,0x0f,0x00,0x00,0xf0,0xff,0x00 };
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const char CH_52[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0xff,0xf0,0x00,0xf0,0x00,0xf0 };
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const char CH_53[] = { 0x42,0x55,0xff,0xf0,0xf0,0x00,0xff,0x00,0x00,0xf0,0xff,0x00 };
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const char CH_54[] = { 0x42,0x55,0x0f,0xf0,0xf0,0x00,0xff,0xf0,0xf0,0xf0,0xff,0xf0 };
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const char CH_55[] = { 0x42,0x55,0xff,0xf0,0x00,0xf0,0x0f,0x00,0xf0,0x00,0xf0,0x00 };
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const char CH_56[] = { 0x42,0x55,0xff,0xf0,0xf0,0xf0,0xff,0xf0,0xf0,0xf0,0xff,0xf0 };
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const char CH_57[] = { 0x42,0x55,0xff,0xf0,0xf0,0xf0,0xff,0xf0,0x00,0xf0,0xff,0x00 };
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const char CH_58[] = { 0x21,0x43,0xf0,0x00,0xf0 };
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const char CH_59[] = { 0x32,0x44,0x0f,0x00,0x00,0x00,0x0f,0x00,0xf0,0x00 };
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const char CH_60[] = { 0x42,0x55,0x00,0xf0,0x0f,0x00,0xf0,0x00,0x0f,0x00,0x00,0xf0 };
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const char CH_61[] = { 0x42,0x43,0xff,0xf0,0x00,0x00,0xff,0xf0 };
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const char CH_62[] = { 0x42,0x55,0xf0,0x00,0x0f,0x00,0x00,0xf0,0x0f,0x00,0xf0,0x00 };
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const char CH_63[] = { 0x42,0x55,0xff,0xf0,0x00,0xf0,0x0f,0x00,0x00,0x00,0x0f,0x00 };
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const char CH_64[] = { 0x42,0x55,0x0f,0x00,0xf0,0xf0,0xff,0xf0,0xf0,0x00,0x0f,0xf0 };
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const char CH_65[] = { 0x42,0x55,0x0f,0x00,0xf0,0xf0,0xff,0xf0,0xf0,0xf0,0xf0,0xf0 };
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const char CH_66[] = { 0x42,0x55,0xff,0x00,0xf0,0xf0,0xff,0x00,0xf0,0xf0,0xff,0x00 };
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const char CH_67[] = { 0x42,0x55,0x0f,0xf0,0xf0,0x00,0xf0,0x00,0xf0,0x00,0x0f,0xf0 };
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const char CH_68[] = { 0x42,0x55,0xff,0x00,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xff,0x00 };
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const char CH_69[] = { 0x42,0x55,0xff,0xf0,0xf0,0x00,0xff,0xf0,0xf0,0x00,0xff,0xf0 };
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const char CH_70[] = { 0x42,0x55,0xff,0xf0,0xf0,0x00,0xff,0xf0,0xf0,0x00,0xf0,0x00 };
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const char CH_71[] = { 0x42,0x55,0x0f,0xf0,0xf0,0x00,0xff,0xf0,0xf0,0xf0,0x0f,0xf0 };
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const char CH_72[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0xff,0xf0,0xf0,0xf0,0xf0,0xf0 };
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const char CH_73[] = { 0x42,0x55,0xff,0xf0,0x0f,0x00,0x0f,0x00,0x0f,0x00,0xff,0xf0 };
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const char CH_74[] = { 0x42,0x55,0x00,0xf0,0x00,0xf0,0x00,0xf0,0xf0,0xf0,0x0f,0x00 };
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const char CH_75[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0xff,0x00,0xf0,0xf0,0xf0,0xf0 };
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const char CH_76[] = { 0x42,0x55,0xf0,0x00,0xf0,0x00,0xf0,0x00,0xf0,0x00,0xff,0xf0 };
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const char CH_77[] = { 0x42,0x55,0xf0,0xf0,0xff,0xf0,0xff,0xf0,0xf0,0xf0,0xf0,0xf0 };
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const char CH_78[] = { 0x42,0x55,0xf0,0xf0,0xff,0xf0,0xff,0xf0,0xff,0xf0,0xf0,0xf0 };
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const char CH_79[] = { 0x42,0x55,0x0f,0x00,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0x0f,0x00 };
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const char CH_80[] = { 0x42,0x55,0xff,0x00,0xf0,0xf0,0xff,0x00,0xf0,0x00,0xf0,0x00 };
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const char CH_81[] = { 0x42,0x55,0x0f,0x00,0xf0,0xf0,0xf0,0xf0,0xff,0xf0,0x0f,0xf0 };
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const char CH_82[] = { 0x42,0x55,0xff,0x00,0xf0,0xf0,0xff,0xf0,0xff,0x00,0xf0,0xf0 };
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const char CH_83[] = { 0x42,0x55,0x0f,0xf0,0xf0,0x00,0x0f,0x00,0x00,0xf0,0xff,0x00 };
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const char CH_84[] = { 0x42,0x55,0xff,0xf0,0x0f,0x00,0x0f,0x00,0x0f,0x00,0x0f,0x00 };
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const char CH_85[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0x0f,0xf0 };
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const char CH_86[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0x0f,0x00,0x0f,0x00 };
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const char CH_87[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0xff,0xf0,0xff,0xf0,0xf0,0xf0 };
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const char CH_88[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0x0f,0x00,0xf0,0xf0,0xf0,0xf0 };
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const char CH_89[] = { 0x42,0x55,0xf0,0xf0,0xf0,0xf0,0x0f,0x00,0x0f,0x00,0x0f,0x00 };
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const char CH_90[] = { 0x42,0x55,0xff,0xf0,0x00,0xf0,0x0f,0x00,0xf0,0x00,0xff,0xf0 };
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const char CH_91[] = { 0x42,0x55,0xff,0xf0,0xf0,0x00,0xf0,0x00,0xf0,0x00,0xff,0xf0 };
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const char CH_92[] = { 0x42,0x43,0xf0,0x00,0x0f,0x00,0x00,0xf0 };
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const char CH_93[] = { 0x42,0x55,0xff,0xf0,0x00,0xf0,0x00,0xf0,0x00,0xf0,0xff,0xf0 };
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const char CH_94[] = { 0x42,0x52,0x0f,0x00,0xf0,0xf0 };
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const char CH_95[] = { 0x42,0x11,0xff,0xf0 };
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const char CH_96[] = { 0x32,0x52,0xf0,0x00,0x0f,0x00 };
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const char CH_97[] = { 0x42,0x44,0xff,0x00,0x0f,0xf0,0xf0,0xf0,0xff,0xf0 };
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const char CH_98[] = { 0x42,0x55,0xf0,0x00,0xff,0x00,0xf0,0xf0,0xf0,0xf0,0xff,0x00 };
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const char CH_99[] = { 0x42,0x44,0x0f,0xf0,0xf0,0x00,0xf0,0x00,0x0f,0xf0 };
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const char CH_100[] = { 0x42,0x55,0x00,0xf0,0x0f,0xf0,0xf0,0xf0,0xf0,0xf0,0x0f,0xf0 };
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const char CH_101[] = { 0x42,0x44,0x0f,0xf0,0xf0,0xf0,0xff,0x00,0x0f,0xf0 };
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const char CH_102[] = { 0x42,0x55,0x00,0xf0,0x0f,0x00,0xff,0xf0,0x0f,0x00,0x0f,0x00 };
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const char CH_103[] = { 0x42,0x45,0x0f,0xf0,0xf0,0xf0,0xff,0xf0,0x00,0xf0,0x0f,0x00 };
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const char CH_104[] = { 0x42,0x55,0xf0,0x00,0xff,0x00,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0 };
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const char CH_105[] = { 0x21,0x55,0xf0,0x00,0xf0,0xf0,0xf0 };
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const char CH_106[] = { 0x42,0x56,0x00,0xf0,0x00,0x00,0x00,0xf0,0x00,0xf0,0xf0,0xf0,0x0f,0x00 };
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const char CH_107[] = { 0x42,0x55,0xf0,0x00,0xf0,0xf0,0xff,0x00,0xff,0x00,0xf0,0xf0 };
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const char CH_108[] = { 0x42,0x55,0xff,0x00,0x0f,0x00,0x0f,0x00,0x0f,0x00,0xff,0xf0 };
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const char CH_109[] = { 0x42,0x44,0xff,0xf0,0xff,0xf0,0xff,0xf0,0xf0,0xf0 };
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const char CH_110[] = { 0x42,0x44,0xff,0x00,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0 };
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const char CH_111[] = { 0x42,0x44,0x0f,0x00,0xf0,0xf0,0xf0,0xf0,0x0f,0x00 };
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const char CH_112[] = { 0x42,0x45,0xff,0x00,0xf0,0xf0,0xf0,0xf0,0xff,0x00,0xf0,0x00 };
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const char CH_113[] = { 0x42,0x45,0x0f,0xf0,0xf0,0xf0,0xf0,0xf0,0x0f,0xf0,0x00,0xf0 };
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const char CH_114[] = { 0x42,0x44,0x0f,0xf0,0xf0,0x00,0xf0,0x00,0xf0,0x00 };
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const char CH_115[] = { 0x42,0x44,0x0f,0xf0,0xff,0x00,0x0f,0xf0,0xff,0x00 };
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const char CH_116[] = { 0x42,0x55,0x0f,0x00,0xff,0xf0,0x0f,0x00,0x0f,0x00,0x0f,0xf0 };
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const char CH_117[] = { 0x42,0x44,0xf0,0xf0,0xf0,0xf0,0xf0,0xf0,0x0f,0xf0 };
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const char CH_118[] = { 0x42,0x44,0xf0,0xf0,0xf0,0xf0,0xff,0xf0,0x0f,0x00 };
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const char CH_119[] = { 0x42,0x44,0xf0,0xf0,0xff,0xf0,0xff,0xf0,0xff,0xf0 };
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const char CH_120[] = { 0x42,0x44,0xf0,0xf0,0x0f,0x00,0x0f,0x00,0xf0,0xf0 };
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const char CH_121[] = { 0x42,0x45,0xf0,0xf0,0xf0,0xf0,0x0f,0xf0,0x00,0xf0,0x0f,0x00 };
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const char CH_122[] = { 0x42,0x44,0xff,0xf0,0x0f,0xf0,0xff,0x00,0xff,0xf0 };
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const char CH_123[] = { 0x42,0x55,0x0f,0xf0,0x0f,0x00,0xf0,0x00,0x0f,0x00,0x0f,0xf0 };
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const char CH_124[] = { 0x21,0x55,0xf0,0xf0,0x00,0xf0,0xf0 };
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const char CH_125[] = { 0x42,0x55,0xff,0x00,0x0f,0x00,0x00,0xf0,0x0f,0x00,0xff,0x00 };
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const char CH_126[] = { 0x42,0x52,0x0f,0xf0,0xff,0x00 };
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const char* const FONT_TABLE[95] = { CH_32, CH_33, CH_34, CH_35, CH_36, CH_37, CH_38, CH_39, CH_40, CH_41, CH_42, CH_43, CH_44, CH_45, CH_46, CH_47, CH_48, CH_49, CH_50, CH_51, CH_52, CH_53, CH_54, CH_55, CH_56, CH_57, CH_58, CH_59, CH_60, CH_61, CH_62, CH_63, CH_64, CH_65, CH_66, CH_67, CH_68, CH_69, CH_70, CH_71, CH_72, CH_73, CH_74, CH_75, CH_76, CH_77, CH_78, CH_79, CH_80, CH_81, CH_82, CH_83, CH_84, CH_85, CH_86, CH_87, CH_88, CH_89, CH_90, CH_91, CH_92, CH_93, CH_94, CH_95, CH_96, CH_97, CH_98, CH_99, CH_100, CH_101, CH_102, CH_103, CH_104, CH_105, CH_106, CH_107, CH_108, CH_109, CH_110, CH_111, CH_112, CH_113, CH_114, CH_115, CH_116, CH_117, CH_118, CH_119, CH_120, CH_121, CH_122, CH_123, CH_124, CH_125, CH_126, };
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inline word swapw(word j) {
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return ((j << 8) | (j >> 8));
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}
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// x1: 0-151
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// y1: 0-255
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inline void blit_solid(byte x1, byte y1, byte w, byte h, byte color) {
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blitter.width = w^4;
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blitter.height = h^4;
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blitter.dstart = x1+y1*256; // swapped
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blitter.solid = color;
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blitter.flags = DSTSCREEN|SOLID;
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}
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inline void draw_solid(word x1, byte y1, byte w, byte h, byte color) {
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blitter.width = w^4;
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blitter.height = h^4;
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blitter.dstart = (x1>>1)+y1*256; // swapped
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blitter.solid = color;
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blitter.flags = (x1&1) ? DSTSCREEN|SOLID|RSHIFT : DSTSCREEN|SOLID;
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}
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inline void draw_vline(word x1, byte y1, byte h, byte color) {
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blitter.width = 1^4;
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blitter.height = h^4;
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blitter.dstart = (x1>>1)+y1*256; // swapped
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blitter.solid = color;
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blitter.flags = (x1&1) ? DSTSCREEN|SOLID|ODDONLY : DSTSCREEN|SOLID|EVENONLY;
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}
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inline void blit_copy_solid(word x, byte y, byte w, byte h, const byte* data, byte solid) {
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blitter.width = w^4;
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blitter.height = h^4;
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blitter.solid = solid;
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blitter.sstart = swapw((word)data);
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blitter.dstart = (x>>1)+y*256; // swapped
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if (solid)
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blitter.flags = (x&1) ? DSTSCREEN|FGONLY|SOLID|RSHIFT : DSTSCREEN|FGONLY|SOLID;
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else
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blitter.flags = (x&1) ? DSTSCREEN|RSHIFT : DSTSCREEN;
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}
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// bias sprites by +4 pixels
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#define XBIAS 2
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inline void draw_sprite(const byte* data, byte x, byte y) {
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blitter.width = data[0]^4;
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blitter.height = data[1]^4;
|
|
blitter.sstart = swapw((word)(data+2));
|
|
blitter.dstart = (x>>1)+y*256+XBIAS; // swapped
|
|
blitter.flags = (x&1) ? DSTSCREEN|FGONLY|RSHIFT : DSTSCREEN|FGONLY;
|
|
}
|
|
|
|
inline void draw_sprite_solid(const byte* data, byte x, byte y, byte color) {
|
|
blitter.width = data[0]^4;
|
|
blitter.height = data[1]^4;
|
|
blitter.sstart = swapw((word)(data+2));
|
|
blitter.dstart = (x>>1)+y*256+XBIAS; // swapped
|
|
blitter.solid = color;
|
|
blitter.flags = (x&1) ? DSTSCREEN|FGONLY|RSHIFT|SOLID : DSTSCREEN|FGONLY|SOLID;
|
|
}
|
|
|
|
void draw_sprite_strided(const byte* data, byte x, byte y, byte stride) {
|
|
byte i;
|
|
byte width = data[0];
|
|
byte height = data[1];
|
|
byte yy = y-(height*(stride-1)/2);
|
|
word dest = (x>>1)+yy*256+XBIAS;
|
|
blitter.width = width^4;
|
|
blitter.height = 1^4;
|
|
for (i=0; i<height; i++) {
|
|
if ((dest & 0xff) < 0x90) {
|
|
blitter.sstart = swapw((word)(data+2));
|
|
blitter.dstart = dest; // swapped
|
|
blitter.flags = DSTSCREEN|FGONLY;
|
|
}
|
|
dest += stride << 8;
|
|
data += width;
|
|
}
|
|
}
|
|
|
|
void erase_sprite_strided(const byte* data, byte x, byte y, byte stride) {
|
|
byte i;
|
|
byte width = data[0];
|
|
byte height = data[1];
|
|
byte yy = y-(height*(stride-1)/2);
|
|
word dest = (x>>1)+yy*256+XBIAS;
|
|
blitter.width = width^4;
|
|
blitter.height = 1^4;
|
|
blitter.solid = 0;
|
|
for (i=0; i<height; i++) {
|
|
if ((dest & 0xff) < 0x90) {
|
|
blitter.dstart = dest; // swapped
|
|
blitter.flags = DSTSCREEN|SOLID;
|
|
}
|
|
dest += stride << 8;
|
|
}
|
|
}
|
|
|
|
byte draw_char(char ch, word x, byte y, byte color) {
|
|
const byte* shape;
|
|
if (ch < LOCHAR || ch > HICHAR) return 1;
|
|
shape = FONT_TABLE[ch - LOCHAR];
|
|
blit_copy_solid(x, y - (shape[1]>>4),
|
|
shape[0] & 0xf, shape[1] & 0xf, shape+2, color);
|
|
return shape[0] >> 4;
|
|
}
|
|
|
|
void draw_string(const char* str, word x, byte y, byte color) {
|
|
while (*str) {
|
|
x += draw_char(*str++, x, y, color);
|
|
}
|
|
}
|
|
|
|
void draw_box(word x1, byte y1, word x2, byte y2, byte color) {
|
|
draw_solid(x1, y1, (x2-x1)>>1, 1, color);
|
|
draw_solid(x1, y2, (x2-x1)>>1, 1, color);
|
|
draw_vline(x1, y1, y2-y1, color);
|
|
draw_vline(x2, y1, y2-y1, color);
|
|
}
|
|
|
|
// GRAPHIC DATA
|
|
|
|
const byte palette_data[16] = {/*{pal:332,n:16}*/
|
|
0x00, 0x03, 0x19, 0x50, 0x52, 0x07, 0x1f, 0x37, 0xe0, 0xa4, 0xfd, 0xff, 0x38, 0x70, 0x7f, 0xf8, };
|
|
|
|
const byte laser_vert[2+1*8] = {
|
|
1,8,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
};
|
|
|
|
const byte laser_horiz[2+4*2] = {
|
|
4,2,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
0xff,
|
|
};
|
|
|
|
|
|
const byte playersprite1[] = {
|
|
7,16,/*{w:14,h:16,bpp:4,brev:1}*/
|
|
0x00,0x00,0xEF,0xEF,0xE0,0x00,0x00,
|
|
0x00,0xEE,0xEE,0xFE,0xEE,0xE0,0x00,
|
|
0x0E,0xED,0xEF,0xEF,0xED,0xEE,0x00,
|
|
0x0E,0xEE,0xDD,0xDD,0xDE,0xEE,0x00,
|
|
0x0E,0xEE,0xEC,0xDC,0xEE,0xEE,0x00,
|
|
0x00,0xEE,0xEE,0xDE,0xEE,0xE0,0x00,
|
|
0x00,0xEE,0xEE,0xDE,0xEE,0xE0,0x00,
|
|
0x00,0x00,0xED,0xDD,0xE0,0x00,0x00,
|
|
0xDD,0xDD,0xEE,0xEE,0xED,0xDD,0xD0,
|
|
0x0C,0xEE,0xEE,0xEE,0xEE,0xEC,0x00,
|
|
0x0E,0xE0,0xEE,0xEE,0xE0,0xEE,0x00,
|
|
0x0E,0xE0,0xEE,0xEE,0xE0,0xEE,0x00,
|
|
0x0E,0xE0,0xDD,0xDD,0xD0,0xDE,0x00,
|
|
0x0D,0x00,0xEE,0x0E,0xE0,0x0D,0x00,
|
|
0x00,0x00,0xEC,0x0C,0xE0,0x00,0x00,
|
|
0x00,0x0D,0xDD,0x0D,0xDD,0x00,0x00,
|
|
};
|
|
|
|
const byte sprite1[2+16*16/2] = {
|
|
8,16,/*{w:16,h:16,bpp:4,brev:1}*/
|
|
0x00,0x09,0x99,0x00,0x00,0x99,0x90,0x00,
|
|
0x00,0x94,0x94,0x90,0x09,0x49,0x49,0x00,
|
|
0x04,0x49,0x49,0x90,0x09,0x94,0x94,0x90,
|
|
0x94,0x99,0x94,0x90,0x09,0x49,0x99,0x49,
|
|
0x99,0x99,0x49,0x93,0x39,0x94,0x99,0x99,
|
|
0x04,0x49,0x99,0x94,0x49,0x99,0x94,0x90,
|
|
0x00,0x94,0x94,0x43,0x34,0x49,0x49,0x00,
|
|
0x00,0x09,0x43,0x94,0x49,0x34,0x90,0x00,
|
|
0x00,0x90,0x00,0x39,0x93,0x00,0x09,0x00,
|
|
0x00,0x09,0x83,0x33,0x33,0x33,0x90,0x00,
|
|
0x00,0x09,0x32,0x23,0x32,0x23,0x90,0x00,
|
|
0x00,0x03,0x03,0x23,0x82,0x30,0x30,0x00,
|
|
0x03,0x30,0x00,0x33,0x33,0x00,0x03,0x30,
|
|
0x00,0x30,0x03,0x00,0x00,0x30,0x03,0x00,
|
|
0x00,0x00,0x00,0x30,0x03,0x00,0x00,0x00,
|
|
0x00,0x09,0x99,0x00,0x00,0x99,0x90,0x00,
|
|
};
|
|
|
|
const byte sprite2[2+16*16/2] = {
|
|
8,16,/*{w:16,h:16,bpp:4,brev:1}*/
|
|
0x00,0x08,0x80,0x40,0x00,0x00,0x8D,0x00,
|
|
0x80,0x94,0x88,0x90,0x09,0x48,0x89,0x00,
|
|
0x08,0x49,0x48,0x66,0x66,0x98,0x94,0x98,
|
|
0x94,0x89,0x66,0x66,0x66,0x66,0x98,0x89,
|
|
0x99,0x66,0x67,0x76,0x67,0x76,0x69,0x98,
|
|
0x88,0x67,0x77,0x66,0x66,0x77,0x74,0x90,
|
|
0x09,0x97,0x74,0x46,0x64,0x47,0x78,0x88,
|
|
0x09,0x89,0x43,0x96,0x69,0x34,0x99,0x90,
|
|
0x08,0x89,0xBB,0x39,0x93,0xBB,0x98,0x90,
|
|
0x80,0x99,0x3B,0x33,0x33,0xB0,0x99,0x88,
|
|
0x00,0x09,0x9C,0xC3,0x3C,0xC8,0x99,0x08,
|
|
0x00,0x00,0x03,0xC3,0x8C,0x30,0x00,0x00,
|
|
0x00,0x00,0x0D,0xD3,0x3D,0x00,0x00,0x00,
|
|
0x00,0x00,0x0D,0x00,0x0D,0xD0,0x00,0x00,
|
|
0x00,0x00,0xDD,0x30,0x03,0xD0,0x00,0x00,
|
|
0x00,0x00,0xD0,0x40,0x00,0xD0,0x00,0x00,
|
|
};
|
|
|
|
const byte sprite3[2+16*16/2] = {
|
|
8,16,/*{w:16,h:16,bpp:4,brev:1}*/
|
|
0x00,0x00,0x00,0x01,0x10,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x11,0x11,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x01,0x10,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0x01,0x10,0x00,0x00,0x00,
|
|
0x00,0x11,0x10,0x01,0x10,0x01,0x11,0x00,
|
|
0x11,0x00,0x10,0x11,0x11,0x01,0x00,0x11,
|
|
0x10,0x00,0x11,0x11,0x11,0x11,0x00,0x01,
|
|
0x10,0x00,0x00,0x11,0x11,0x00,0x00,0x01,
|
|
0x00,0x01,0x10,0x11,0x41,0x01,0x10,0x00,
|
|
0x00,0x10,0x11,0x11,0x11,0x11,0x01,0x00,
|
|
0x01,0x00,0x00,0x51,0x15,0x00,0x00,0x10,
|
|
0x01,0x00,0x01,0x10,0x01,0x10,0x00,0x10,
|
|
0x01,0x00,0x10,0x00,0x00,0x01,0x00,0x10,
|
|
0x00,0x10,0x01,0x00,0x00,0x10,0x01,0x00,
|
|
0x00,0x10,0x00,0x00,0x00,0x00,0x01,0x00,
|
|
0x00,0x01,0x10,0x00,0x00,0x01,0x10,0x00,
|
|
};
|
|
|
|
const byte sprite4[2+16*16/2] = {
|
|
8,16,/*{w:16,h:16,bpp:4,brev:1}*/
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0xbb,0xbb,0x00,0x00,0x00,
|
|
0x00,0x00,0x00,0xbb,0xbb,0x00,0x00,0x00,
|
|
0x00,0x00,0xbb,0xbb,0xbb,0xbb,0x00,0x00,
|
|
0x00,0x0b,0x4b,0xbb,0xbb,0xb4,0xb0,0x00,
|
|
0x00,0x0b,0x44,0xbb,0xbb,0x49,0xb0,0x00,
|
|
0x00,0xbb,0x99,0x4b,0xb4,0x99,0xbb,0x00,
|
|
0x00,0x4b,0xb9,0x9b,0xb4,0x4b,0xb4,0x00,
|
|
0x00,0x04,0xbb,0x4b,0xb9,0xbb,0x40,0x00,
|
|
0x00,0x00,0x4b,0xbb,0xbb,0xb4,0x00,0x00,
|
|
0x11,0x00,0x0b,0xbb,0xbb,0xb0,0x00,0x11,
|
|
0x10,0x10,0x0b,0x41,0x14,0xb0,0x01,0x01,
|
|
0x10,0x00,0x05,0x11,0x11,0x50,0x00,0x01,
|
|
0x01,0x00,0x01,0x51,0x15,0x10,0x00,0x10,
|
|
0x00,0x10,0x01,0x10,0x01,0x10,0x01,0x00,
|
|
0x01,0x01,0x10,0x10,0x01,0x01,0x10,0x10,
|
|
};
|
|
|
|
const byte sprite5[2+16*16/2] = {
|
|
8,16,
|
|
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
0x00,0x00,0x22,0x00,0x00,0x22,0x00,0x00,
|
|
0x00,0x20,0x20,0x00,0x00,0x02,0x02,0x00,
|
|
0x02,0x22,0x12,0x00,0x00,0x21,0x22,0x20,
|
|
0x00,0x02,0x11,0x00,0x00,0x11,0x20,0x00,
|
|
0x00,0x00,0x02,0x11,0x11,0x20,0x00,0x00,
|
|
0x00,0x00,0x02,0x22,0x22,0x20,0x00,0x00,
|
|
0x00,0x00,0x21,0x22,0x22,0x12,0x00,0x00,
|
|
0x00,0x00,0x22,0x12,0x21,0x22,0x00,0x00,
|
|
0x02,0x00,0x22,0x12,0x21,0x22,0x00,0x20,
|
|
0x20,0x02,0x21,0x11,0x11,0x12,0x20,0x02,
|
|
0x02,0x22,0x15,0x12,0x21,0x51,0x22,0x20,
|
|
0x02,0x11,0x15,0x52,0x25,0x51,0x11,0x20,
|
|
0x20,0x00,0x22,0x12,0x21,0x22,0x00,0x02,
|
|
0x20,0x02,0x20,0x20,0x02,0x02,0x20,0x02,
|
|
0x02,0x02,0x00,0x20,0x02,0x00,0x20,0x20,
|
|
};
|
|
|
|
const byte sprite6[2+12*16/2] = {
|
|
8,10,/*{w:16,h:10,bpp:4,brev:1}*/
|
|
0x00,0x00,0x00,0x00,0x04,0x04,0x04,0x00,
|
|
0x00,0x00,0x00,0x00,0x44,0x44,0x44,0x40,
|
|
0x00,0x00,0x04,0x04,0x49,0x49,0x99,0x44,
|
|
0x00,0x00,0x44,0x44,0x99,0x94,0x44,0x40,
|
|
0x00,0x04,0x49,0x99,0x94,0x49,0x99,0x40,
|
|
0x00,0x44,0x99,0x94,0x49,0x99,0x44,0x00,
|
|
0x04,0x49,0x44,0x99,0x99,0x44,0x00,0x00,
|
|
0x04,0x44,0x00,0x49,0x44,0x40,0x00,0x00,
|
|
0x04,0x40,0x00,0x04,0x00,0x00,0x00,0x00,
|
|
0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
|
|
};
|
|
|
|
const byte sprite7[2+16*16/2] = {
|
|
8,14,/*{w:16,h:14,bpp:4,brev:1}*/
|
|
0x00,0x60,0x00,0x00,0x00,0x00,0x06,0x00,
|
|
0x60,0x60,0x00,0x00,0x00,0x00,0x06,0x06,
|
|
0x60,0x60,0x50,0x00,0x00,0x05,0x06,0x06,
|
|
0x60,0x60,0x06,0x00,0x00,0x60,0x06,0x06,
|
|
0x66,0x60,0x06,0x06,0x60,0x60,0x06,0x66,
|
|
0x66,0x60,0x66,0x66,0x66,0x66,0x06,0x66,
|
|
0x66,0x60,0x6b,0x6b,0xb6,0xb6,0x06,0x66,
|
|
0x06,0x66,0x66,0xb6,0x6b,0x66,0x66,0x60,
|
|
0x00,0x67,0x66,0x66,0x66,0x66,0x66,0x00,
|
|
0x00,0x11,0x11,0x66,0x66,0x11,0x11,0x00,
|
|
0x01,0x11,0x21,0x11,0x11,0x12,0x11,0x10,
|
|
0x00,0x10,0x01,0x01,0x10,0x10,0x01,0x00,
|
|
0x00,0x10,0x11,0x00,0x00,0x11,0x01,0x00,
|
|
0x00,0x00,0x10,0x00,0x00,0x01,0x00,0x00,
|
|
};
|
|
|
|
const byte sprite8[2+16*16/2] = {
|
|
8,15,/*{w:16,h:15,bpp:4,brev:1}*/
|
|
0x00,0x00,0x11,0x11,0x11,0x11,0x00,0x00,
|
|
0x00,0x01,0x61,0x11,0x21,0x12,0x10,0x00,
|
|
0x00,0x11,0x12,0x11,0x61,0x11,0x11,0x00,
|
|
0x00,0x11,0x71,0x21,0x61,0x17,0x11,0x00,
|
|
0x00,0x11,0x77,0x11,0x12,0x77,0x11,0x00,
|
|
0x00,0x11,0x17,0x17,0x71,0x72,0x11,0x00,
|
|
0x00,0x16,0x21,0x78,0x87,0x11,0x11,0x00,
|
|
0x00,0x01,0x81,0x88,0x88,0x18,0x10,0x00,
|
|
0x00,0x08,0x18,0x58,0x85,0x81,0x80,0x00,
|
|
0x00,0x88,0x01,0x88,0x88,0x10,0x88,0x00,
|
|
0x00,0x08,0x07,0x78,0x87,0x70,0x80,0x00,
|
|
0x08,0x80,0x07,0x80,0x08,0x70,0x08,0x80,
|
|
0x88,0x00,0x88,0x00,0x00,0x88,0x00,0x88,
|
|
0x80,0x00,0x08,0x80,0x08,0x80,0x00,0x08,
|
|
0x00,0x00,0x00,0x80,0x08,0x00,0x00,0x00,
|
|
};
|
|
|
|
const byte sprite9[2+13*16/2] = {
|
|
8,13,/*{w:16,h:13,bpp:4,brev:1}*/
|
|
0x00,0x00,0xaa,0x00,0x00,0xaa,0x00,0x00,
|
|
0x00,0x00,0xa0,0x0a,0xa0,0x0a,0x00,0x00,
|
|
0x0a,0xaa,0xa4,0xaa,0xaa,0x3a,0xaa,0xa0,
|
|
0x00,0x0a,0x3a,0x9a,0xa9,0xa3,0xa0,0x00,
|
|
0x00,0x0a,0xaa,0x99,0xa4,0xaa,0xa0,0x00,
|
|
0x00,0x0a,0xaa,0x99,0x94,0xaa,0xa0,0x00,
|
|
0x00,0xaa,0x33,0xaa,0xaa,0x43,0xaa,0x00,
|
|
0x0a,0x3a,0xaa,0x3a,0xa3,0xaa,0xa3,0xa0,
|
|
0x00,0xaa,0xaa,0x30,0x03,0xaa,0xaa,0x00,
|
|
0x00,0x0a,0xa0,0x30,0x03,0x0a,0xa0,0x00,
|
|
0x00,0xa3,0xa0,0x00,0x00,0x0a,0x4a,0x00,
|
|
0x00,0xaa,0xa0,0x00,0x00,0x0a,0xaa,0x00,
|
|
0x00,0x0a,0xa0,0x00,0x00,0x0a,0xa0,0x00,
|
|
};
|
|
|
|
const byte* const all_sprites[9] = {
|
|
sprite1,
|
|
sprite2,
|
|
sprite3,
|
|
sprite4,
|
|
sprite5,
|
|
sprite6,
|
|
sprite7,
|
|
sprite8,
|
|
sprite9,
|
|
};
|
|
|
|
// GAME CODE
|
|
|
|
typedef struct Actor;
|
|
|
|
typedef void (*ActorUpdateFn)(struct Actor* a);
|
|
typedef void (*ActorDrawFn)(struct Actor* a);
|
|
|
|
typedef struct Actor {
|
|
struct Actor* next;
|
|
struct Actor** prevptr;
|
|
byte x,y;
|
|
byte* shape;
|
|
ActorUpdateFn update;
|
|
ActorDrawFn draw;
|
|
union {
|
|
struct { sbyte dx,dy; } laser;
|
|
struct { byte exploding; } enemy;
|
|
} u;
|
|
} Actor;
|
|
|
|
#define MAX_ACTORS 128
|
|
|
|
static Actor actors[MAX_ACTORS];
|
|
static Actor* player_list;
|
|
static Actor* fast_list;
|
|
static Actor* slow_lists[4];
|
|
static Actor* obstacle_list;
|
|
static Actor* free_list;
|
|
static Actor* effects_list;
|
|
static byte frame;
|
|
|
|
static word score; // bcd score
|
|
|
|
#define PLAYER 1
|
|
#define LASER 2
|
|
|
|
void add_actor(Actor** list, Actor* a) {
|
|
if (*list) (*list)->prevptr = &a->next;
|
|
a->next = *list;
|
|
a->prevptr = list;
|
|
*list = a;
|
|
}
|
|
|
|
void remove_actor(Actor* a) {
|
|
if (a->next) a->next->prevptr = a->prevptr;
|
|
*a->prevptr = a->next;
|
|
}
|
|
|
|
void draw_actor_normal(Actor* a) {
|
|
draw_sprite(a->shape, a->x, a->y);
|
|
}
|
|
|
|
void draw_actor_exploding(Actor* a) {
|
|
erase_sprite_strided(a->shape, a->x, a->y, a->u.enemy.exploding);
|
|
if (a->u.enemy.exploding > 10) {
|
|
a->draw = NULL;
|
|
} else {
|
|
draw_sprite_strided(a->shape, a->x, a->y, ++a->u.enemy.exploding);
|
|
}
|
|
}
|
|
|
|
void update_actor(Actor* a) {
|
|
// if NULL shape, we don't have anything
|
|
if (a->shape) {
|
|
// erase the sprite
|
|
draw_sprite_solid(a->shape, a->x, a->y, 0);
|
|
// call update callback
|
|
if (a->update) {
|
|
a->update(a);
|
|
}
|
|
// did we delete it?
|
|
if (a->shape) {
|
|
// draw the sprite
|
|
if (a->draw) {
|
|
a->draw(a);
|
|
}
|
|
} else {
|
|
// shape became null, remove from list
|
|
remove_actor(a);
|
|
}
|
|
}
|
|
}
|
|
|
|
//
|
|
|
|
word lfsr = 1;
|
|
|
|
word rand() {
|
|
byte lsb = lfsr & 1;
|
|
lfsr >>= 1;
|
|
if (lsb) lfsr ^= 0xd400;
|
|
return lfsr;
|
|
}
|
|
|
|
word bcd_add(word a, word b) {
|
|
a; b; // to avoid "unused variable" warning
|
|
__asm
|
|
ld hl,#4
|
|
add hl,sp
|
|
ld iy,#2
|
|
add iy,sp
|
|
ld a,0 (iy) ; load a (lo)
|
|
add a, (hl) ; add b (lo)
|
|
daa ; convert to BCD
|
|
ld c,a
|
|
ld a,1 (iy) ; load a (hi)
|
|
inc hl
|
|
adc a, (hl) ; add b (hi) + carry
|
|
daa
|
|
ld b,a
|
|
ld l, c
|
|
ld h, b ; result in HL reg
|
|
__endasm;
|
|
}
|
|
|
|
signed char random_dir() {
|
|
byte x = rand();
|
|
if (x < 85) return 0;
|
|
else if (x < 85*2) return -1;
|
|
else return 1;
|
|
}
|
|
|
|
void update_actor_list(Actor* a) {
|
|
while (a) {
|
|
update_actor(a);
|
|
a = a->next;
|
|
}
|
|
}
|
|
|
|
static byte g_section;
|
|
|
|
void update_actors_partial(Actor* a) {
|
|
while (a) {
|
|
if (g_section ^ (a->y < 0x80)) {
|
|
update_actor(a);
|
|
}
|
|
a = a->next;
|
|
}
|
|
}
|
|
|
|
void update_screen_section(byte section) {
|
|
g_section = section;
|
|
update_actors_partial(player_list);
|
|
update_actors_partial(fast_list);
|
|
update_actors_partial(slow_lists[frame & 3]);
|
|
}
|
|
|
|
static Actor* test_actor;
|
|
static byte test_x, test_y;
|
|
|
|
byte minbyte(byte a, byte b) { return a<b?a:b; }
|
|
byte maxbyte(byte a, byte b) { return a>b?a:b; }
|
|
|
|
bool test_actor_pixels(Actor* a) {
|
|
if (a->shape) {
|
|
byte x,y;
|
|
byte *p1, *p2;
|
|
byte x1 = maxbyte(test_actor->x, a->x);
|
|
byte y1 = maxbyte(test_actor->y, a->y);
|
|
byte x2 = minbyte(test_actor->x + test_actor->shape[0]*2,
|
|
a->x + a->shape[0]*2);
|
|
byte y2 = minbyte(test_actor->y + test_actor->shape[1],
|
|
a->y + a->shape[1]);
|
|
if (x2 < x1) x2 = 255; // clip to 8-bit coord.
|
|
if (y2 < y1) y2 = 255; // clip to 8-bit coord.
|
|
if (x2 <= x1 || y2 <= y1) return false;
|
|
//draw_box(x1,y1,x2,y2,0xff);
|
|
p1 = &test_actor->shape[2+(y1-test_actor->y)*test_actor->shape[0]];
|
|
p2 = &a->shape[2+(y1-a->y)*a->shape[0]];
|
|
p1 += (x1 - test_actor->x) >> 1;
|
|
p2 += (x1 - a->x) >> 1;
|
|
for (y=y1; y<y2; y++) {
|
|
for (x=x1; x<x2; x++) {
|
|
if (p1[x] && p2[x]) return true;
|
|
}
|
|
p1 += test_actor->shape[0];
|
|
p2 += a->shape[0];
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
inline bool test_collision_actor(Actor* a) {
|
|
return ((byte)(test_y - a->y + 16) < 32 &&
|
|
(byte)(test_x - a->x + 16) < 32 &&
|
|
test_actor_pixels(a));
|
|
}
|
|
|
|
Actor* test_collisions(Actor* a) {
|
|
while (a) {
|
|
if (test_collision_actor(a)) {
|
|
return a;
|
|
}
|
|
a = a->next;
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
void setup_collision(Actor* a) {
|
|
test_actor = a;
|
|
test_x = a->x;
|
|
test_y = a->y;
|
|
}
|
|
|
|
void destroy_player() {
|
|
Actor* a = &actors[PLAYER];
|
|
byte i;
|
|
sound_pia = 1; // play sound
|
|
for (i=0; i<60; i++) {
|
|
WATCHDOG;
|
|
while (video_counter != 0xfc) ;
|
|
draw_sprite_solid(a->shape, a->x, a->y, i);
|
|
while (video_counter == 0xfc) ;
|
|
}
|
|
for (i=1; i<60; i++) {
|
|
WATCHDOG;
|
|
while (video_counter != 0xfc) ;
|
|
draw_sprite_strided(a->shape, a->x+i, a->y, i);
|
|
draw_sprite_strided(a->shape, a->x-i, a->y, i);
|
|
while (video_counter == 0xfc) ;
|
|
}
|
|
}
|
|
|
|
void random_walk(Actor* a) {
|
|
a->x += random_dir();
|
|
a->y += random_dir();
|
|
setup_collision(a);
|
|
if (actors[PLAYER].shape && test_collision_actor(&actors[PLAYER])) {
|
|
destroy_player();
|
|
actors[PLAYER].shape = NULL;
|
|
}
|
|
}
|
|
|
|
void laser_move(Actor* a) {
|
|
// did we hit something?
|
|
static Actor* collided;
|
|
setup_collision(a);
|
|
collided = test_collisions(fast_list);
|
|
if (!collided) collided = test_collisions(slow_lists[0]);
|
|
if (!collided) collided = test_collisions(slow_lists[1]);
|
|
if (!collided) collided = test_collisions(slow_lists[2]);
|
|
if (!collided) collided = test_collisions(slow_lists[3]);
|
|
if (collided) {
|
|
// get rid of laser (we can do this in our 'update' fn)
|
|
a->shape = NULL;
|
|
// set exploding counter for enemy, change fn pointers
|
|
collided->draw = draw_actor_exploding;
|
|
collided->update = NULL;
|
|
collided->u.enemy.exploding = 1;
|
|
// move enemy to effects list
|
|
remove_actor(collided);
|
|
add_actor(&effects_list, collided);
|
|
// play sound
|
|
sound_pia = 2;
|
|
// add score
|
|
score = bcd_add(score, 5);
|
|
return;
|
|
}
|
|
// move laser
|
|
// check for wall collisions
|
|
a->x += a->u.laser.dx;
|
|
if (a->u.laser.dx > 0 && a->x < 8) a->shape = NULL;
|
|
if (a->u.laser.dx < 0 && a->x > 255-8) a->shape = NULL;
|
|
a->y += a->u.laser.dy;
|
|
if (a->y > 255-8) a->shape = NULL;
|
|
}
|
|
|
|
void shoot_laser(sbyte dx, sbyte dy, const byte* shape) {
|
|
Actor* a = &actors[LASER];
|
|
a->shape = (void*) shape;
|
|
a->x = actors[PLAYER].x + 6;
|
|
a->y = actors[PLAYER].y + 8;
|
|
a->u.laser.dx = dx;
|
|
a->u.laser.dy = dy;
|
|
add_actor(&player_list, a);
|
|
}
|
|
|
|
void player_laser() {
|
|
// is the laser being used?
|
|
if (actors[LASER].shape == NULL) { // no, check controls
|
|
if (UP2) shoot_laser(0,-8,laser_vert);
|
|
else if (DOWN2) shoot_laser(0,8,laser_vert);
|
|
else if (LEFT2) shoot_laser(-8,0,laser_horiz);
|
|
else if (RIGHT2) shoot_laser(8,0,laser_horiz);
|
|
}
|
|
}
|
|
|
|
void player_move(Actor* a) {
|
|
byte x = a->x;
|
|
byte y = a->y;
|
|
if (UP1) y-=1;
|
|
if (DOWN1) y+=1;
|
|
if (LEFT1) x-=1;
|
|
if (RIGHT1) x+=1;
|
|
a->x = x;
|
|
a->y = y;
|
|
player_laser();
|
|
}
|
|
|
|
static Actor* current_effect;
|
|
|
|
void effects_new_frame() {
|
|
current_effect = effects_list;
|
|
}
|
|
|
|
void effects_next() {
|
|
if (current_effect) {
|
|
if (current_effect->draw) {
|
|
current_effect->draw(current_effect);
|
|
} else {
|
|
remove_actor(current_effect);
|
|
}
|
|
current_effect = current_effect->next;
|
|
}
|
|
}
|
|
|
|
Actor* new_actor() {
|
|
Actor* a = free_list;
|
|
remove_actor(a);
|
|
a->draw = draw_actor_normal;
|
|
return a;
|
|
}
|
|
|
|
Actor* new_effect(ActorDrawFn draw) {
|
|
Actor* a = new_actor();
|
|
a->draw = draw;
|
|
add_actor(&effects_list, a);
|
|
return a;
|
|
}
|
|
|
|
void init() {
|
|
byte i;
|
|
blit_solid(0, 0, 255, 255, 0);
|
|
memset(actors, 0, sizeof(actors));
|
|
memcpy(palette, palette_data, 16);
|
|
player_list = fast_list = obstacle_list = free_list = NULL;
|
|
memset(slow_lists, 0, sizeof(slow_lists));
|
|
// add all actors to free list
|
|
for (i=MAX_ACTORS-1; i>0; i--) {
|
|
add_actor(&free_list, &actors[i]);
|
|
}
|
|
score = 0;
|
|
}
|
|
|
|
void make_player_actors() {
|
|
// make player
|
|
Actor* a = new_actor();
|
|
a->x = 128;
|
|
a->y = 120;
|
|
a->shape = (void*) playersprite1;
|
|
a->update = player_move;
|
|
add_actor(&player_list, a);
|
|
// make laser
|
|
a = new_actor();
|
|
a->update = laser_move;
|
|
a->shape = NULL;
|
|
}
|
|
|
|
void make_enemy_actors() {
|
|
byte i;
|
|
const byte num_actors = 32;
|
|
for (i=3; i<num_actors; i++) {
|
|
Actor* a = new_actor();
|
|
do {
|
|
a->x = rand() + rand();
|
|
a->y = rand() + rand();
|
|
} while ((byte)(a->x - 96) < 64 && (byte)(a->y - 96) < 64);
|
|
a->shape = (void*) all_sprites[i%9];
|
|
a->update = random_walk;
|
|
a->draw = draw_actor_normal;
|
|
if (i < 5) add_actor(&fast_list, a);
|
|
else add_actor(&slow_lists[i&3], a);
|
|
WATCHDOG;
|
|
}
|
|
}
|
|
|
|
void draw_bcd_word(word bcd, word x, byte y, byte color) {
|
|
byte j;
|
|
x += 4*4;
|
|
for (j=0; j<4; j++) {
|
|
x -= 4;
|
|
draw_char('0'+(bcd & 0xf), x, y, color);
|
|
bcd >>= 4;
|
|
}
|
|
}
|
|
|
|
void draw_score(Actor* a) {
|
|
a;
|
|
draw_string("Plyr 1", 278, 8, 0xee);
|
|
// draw digits in color 0 so the background is erased
|
|
draw_bcd_word(score, 278, 20, 0);
|
|
// last two digits of score are "00"
|
|
draw_char('0', 278+16, 20, 0);
|
|
draw_char('0', 278+20, 20, 0);
|
|
}
|
|
|
|
void draw_playfield(Actor* a) {
|
|
a;
|
|
draw_box(0,0,275,255,0x11);
|
|
}
|
|
|
|
void main() {
|
|
init();
|
|
make_player_actors();
|
|
make_enemy_actors();
|
|
// add low-priority effects here, because new effects
|
|
// are added to the head of the list
|
|
new_effect(draw_score);
|
|
new_effect(draw_playfield);
|
|
// main loop
|
|
while (actors[PLAYER].shape) {
|
|
WATCHDOG;
|
|
effects_new_frame();
|
|
while (video_counter >= 0x90) effects_next();
|
|
update_screen_section(1);
|
|
while (video_counter < 0x90) effects_next();
|
|
update_screen_section(0);
|
|
switch (frame & 7) {
|
|
case 0:
|
|
break;
|
|
}
|
|
frame++;
|
|
}
|
|
main();
|
|
}
|
|
|
|
// SOUND ROM
|
|
|
|
const byte __at(0x9000) SOUND_ROM[] = {
|
|
0xdb,0x00,0xb7,0x20,0x01,0x76,0x31,0x00,0x80,0xf3,0x11,0x00,0x40,0xdb,0x00,0x4f,0x0d,0x06,0x00,0x69,0x60,0x29,0x09,0x29,0x29,0x01,0x2b,0x01,0x09,0x01,0x0c,0x00,0xed,0xb0,0xcd,0xb5,0x01,0x3e,0x00,0xd3,0x00,0x76,0xc9,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0xc0,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x40,0x00,0x00,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0xc0,0x40,0x00,0x03,0x06,0x09,0x0c,0x10,0x13,0x16,0x19,0x1c,0x1f,0x22,0x25,0x28,0x2b,0x2e,0x31,0x33,0x36,0x39,0x3c,
|
|
0x3f,0x41,0x44,0x47,0x49,0x4c,0x4e,0x51,0x53,0x55,0x58,0x5a,0x5c,0x5e,0x60,0x62,0x64,0x66,0x68,0x6a,0x6b,0x6d,0x6f,0x70,0x71,0x73,0x74,0x75,0x76,0x78,0x79,0x7a,0x7a,0x7b,0x7c,0x7d,0x7d,0x7e,0x7e,0x7e,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7f,0x7e,0x7e,0x7e,0x7d,0x7d,0x7c,0x7b,0x7a,0x7a,0x79,0x78,0x76,0x75,0x74,0x73,0x71,0x70,0x6f,0x6d,0x6b,0x6a,0x68,0x66,0x64,0x62,0x60,0x5e,0x5c,0x5a,0x58,0x55,0x53,0x51,0x4e,0x4c,0x49,0x47,0x44,0x41,0x3f,0x3c,0x39,0x36,0x33,0x31,0x2e,0x2b,0x28,0x25,0x22,0x1f,0x1c,0x19,0x16,0x13,0x10,0x0c,0x09,0x06,0x03,0x80,0x88,0x90,0x98,0xa0,0xa8,0xb0,0xb8,0xc0,0xc8,0xd0,0xd8,0xe0,0xe8,0xf0,0xf8,0x00,0x08,0x10,0x18,0x20,
|
|
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};
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