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Merged
sehugg merged 2 commits into from
Aug 14, 2026
Merged

Add PC Engine Chase game and graphics support #256

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9407d86
Add PC Engine Chase game and graphics support
MikeDX Aug 2, 2026
7c0a7fc
Enhance graphics handling for PC Engine Chase game
MikeDX Aug 2, 2026
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775 changes: 775 additions & 0 deletions presets/pce/chase.c
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526 changes: 526 additions & 0 deletions presets/pce/chase_gfx.h
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123 changes: 123 additions & 0 deletions presets/pce/gfxtest.c
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/*
* PC Engine graphics smoke test — BG tiles + bouncing sprites.
*
* Proves the pcegfx SDK (not conio). Pad moves the ship; ball/alien bounce.
*/
//#resource "pcegfx.h"
//#resource "gfxtest_gfx.h"
//#link "pcegfx.c"
//#link "pcegfx_tia.s"

#include <joystick.h>
#include "pcegfx.h"
#include "gfxtest_gfx.h"

#define TILE0 PCE_TILE_BASE
#define SPR0 PCE_SPR_BASE

static word ship_x, ship_y;
static word ball_x, ball_y;
static sbyte ball_dx, ball_dy;
static word alien_x, alien_y;
static sbyte alien_dx;

static void draw_playfield(void) {
byte x, y;

/* sky */
pce_fill_bat(0, 0, 32, 28, PCE_BAT(TILE0 + 1, 0));

/* checker floor */
for (y = 24; y < 28; ++y)
for (x = 0; x < 32; ++x)
pce_put_tile(x, y, PCE_BAT(TILE0 + 2, 0));

/* brick border */
pce_fill_bat(0, 0, 32, 1, PCE_BAT(TILE0 + 3, 0));
pce_fill_bat(0, 23, 32, 1, PCE_BAT(TILE0 + 3, 0));
for (y = 1; y < 23; ++y) {
pce_put_tile(0, y, PCE_BAT(TILE0 + 3, 0));
pce_put_tile(31, y, PCE_BAT(TILE0 + 3, 0));
}

/* stars */
pce_put_tile(4, 3, PCE_BAT(TILE0 + 4, 0));
pce_put_tile(12, 5, PCE_BAT(TILE0 + 4, 0));
pce_put_tile(20, 2, PCE_BAT(TILE0 + 4, 0));
pce_put_tile(27, 6, PCE_BAT(TILE0 + 4, 0));
pce_put_tile(8, 10, PCE_BAT(TILE0 + 4, 0));
pce_put_tile(22, 12, PCE_BAT(TILE0 + 4, 0));
}

static void setup_gfx(void) {
pce_gfx_init();
pce_disp_off();

pce_load_palette(0, gfxtest_bg_pal, 16);
pce_load_palette(256, gfxtest_spr_pal, 16);

pce_load_tiles_planar(TILE0, gfxtest_tiles, GFXTEST_NTILE);
pce_load_sprites(SPR0, gfxtest_sprites, GFXTEST_NSPR);

draw_playfield();

ship_x = PCE_SPR_X0 + 120;
ship_y = PCE_SPR_Y0 + 180;
ball_x = PCE_SPR_X0 + 80;
ball_y = PCE_SPR_Y0 + 40;
ball_dx = 2;
ball_dy = 1;
alien_x = PCE_SPR_X0 + 40;
alien_y = PCE_SPR_Y0 + 60;
alien_dx = 1;

pce_satb_clear();
pce_spr_set(0, ship_x, ship_y, PCE_SPR_PATTERN(0), PCE_SPR_PRI | PCE_SPR_PAL(0));
pce_spr_set(1, ball_x, ball_y, PCE_SPR_PATTERN(1), PCE_SPR_PRI | PCE_SPR_PAL(0));
pce_spr_set(2, alien_x, alien_y, PCE_SPR_PATTERN(2), PCE_SPR_PRI | PCE_SPR_PAL(0));
pce_satb_update();
pce_disp_on();
}

static void update_sprites(void) {
unsigned char pad = joy_read(JOY_1);

if (JOY_LEFT(pad) && ship_x > PCE_SPR_X0 + 8)
ship_x -= 2;
if (JOY_RIGHT(pad) && ship_x < PCE_SPR_X0 + 256 - 24)
ship_x += 2;
if (JOY_UP(pad) && ship_y > PCE_SPR_Y0 + 8)
ship_y -= 2;
if (JOY_DOWN(pad) && ship_y < PCE_SPR_Y0 + 224 - 24)
ship_y += 2;

ball_x += ball_dx;
ball_y += ball_dy;
if (ball_x <= PCE_SPR_X0 + 8 || ball_x >= PCE_SPR_X0 + 256 - 24)
ball_dx = -ball_dx;
if (ball_y <= PCE_SPR_Y0 + 8 || ball_y >= PCE_SPR_Y0 + 224 - 40)
ball_dy = -ball_dy;

alien_x += alien_dx;
if (alien_x <= PCE_SPR_X0 + 8 || alien_x >= PCE_SPR_X0 + 256 - 24)
alien_dx = -alien_dx;

{
word attr = PCE_SPR_PRI | PCE_SPR_PAL(0);
PCE_SPR_SET(0, ship_x, ship_y, PCE_SPR_PATTERN(0), attr);
PCE_SPR_SET(1, ball_x, ball_y, PCE_SPR_PATTERN(1), attr);
PCE_SPR_SET(2, alien_x, alien_y, PCE_SPR_PATTERN(2), attr);
}
pce_satb_update_n(3);
}

int main(void) {
joy_install(joy_static_stddrv);
setup_gfx();

for (;;) {
pce_wait_vsync();
update_sprites();
}
return 0;
}
52 changes: 52 additions & 0 deletions presets/pce/gfxtest_gfx.h
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/* Auto-generated by scripts/gen_pce_gfxtest_gfx.py — do not edit */
#ifndef GFXTEST_GFX_H
#define GFXTEST_GFX_H

#define GFXTEST_NTILE 5
#define GFXTEST_NSPR 3

/* BG tiles: SMS planar in ROM; pce_load_tiles_planar() → VDC format */
const unsigned char gfxtest_tiles[160] = /*{w:8,h:8,bpp:1,count:5,brev:1,np:4,pofs:1,sl:4}*/ {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00, 0xFF, 0x00, 0x00, 0x00,
0x55, 0xAA, 0x00, 0x00, 0xAA, 0x55, 0x00, 0x00, 0x55, 0xAA, 0x00, 0x00, 0xAA, 0x55, 0x00, 0x00,
0x55, 0xAA, 0x00, 0x00, 0xAA, 0x55, 0x00, 0x00, 0x55, 0xAA, 0x00, 0x00, 0xAA, 0x55, 0x00, 0x00,
0xFF, 0xFF, 0x00, 0x00, 0x88, 0xFF, 0x00, 0x00, 0x88, 0xFF, 0x00, 0x00, 0x88, 0xFF, 0x00, 0x00,
0xFF, 0xFF, 0x00, 0x00, 0xA0, 0xFF, 0x00, 0x00, 0xA0, 0xFF, 0x00, 0x00, 0xA0, 0xFF, 0x00, 0x00,
0xEF, 0x00, 0x10, 0x00, 0xEF, 0x00, 0x10, 0x00, 0xC7, 0x00, 0x38, 0x00, 0x83, 0x00, 0x7C, 0x00,
0xC7, 0x00, 0x38, 0x00, 0xEF, 0x00, 0x10, 0x00, 0xEF, 0x00, 0x10, 0x00, 0xFF, 0x00, 0x00, 0x00,
};

const unsigned short gfxtest_sprites[192] = /*{w:16,h:16,bpp:1,count:3,brev:1,np:4,pofs:16,sl:1,bpw:16,wpimg:64}*/ {
0x0180, 0x03C0, 0x03C0, 0x07E0, 0x0660, 0x0FF0, 0x0FF0, 0x1E78,
0x1E78, 0x3FFC, 0x3BDC, 0x718E, 0x6186, 0x0180, 0x0240, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0180,
0x0180, 0x0000, 0x0000, 0x0000, 0x0180, 0x0180, 0x0240, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x03C0, 0x0FF0, 0x1FF8, 0x381C, 0x300C, 0x700E, 0x700E,
0x700E, 0x700E, 0x300C, 0x381C, 0x1FF8, 0x0FF0, 0x03C0, 0x0000,
0x0000, 0x03C0, 0x0C30, 0x1008, 0x27E4, 0x29F4, 0x4BF2, 0x4FF2,
0x4FF2, 0x4FF2, 0x2FF4, 0x27E4, 0x1008, 0x0C30, 0x03C0, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0600, 0x0400, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0810, 0x0810, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0C30, 0x0660, 0x0FF0, 0x1FF8, 0x37EC, 0x37EC, 0x3FFC,
0x3FFC, 0x0C30, 0x1818, 0x300C, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
};

const unsigned short gfxtest_bg_pal[16] = /*{pal:"pce",n:16,bpw:16}*/ { 0x000, 0x049, 0x12E, 0x0B4, 0x1FF, 0x038, 0x1C0, 0x0FF, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000 };
const unsigned short gfxtest_spr_pal[16] = /*{pal:"pce",n:16,bpw:16}*/ { 0x000, 0x1FF, 0x038, 0x0E8, 0x1FF, 0x1C0, 0x049, 0x092, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000, 0x000 };

#endif
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