#include "driver.h" #include "deco16ic.h" static void draw_sprites(running_machine* machine, mame_bitmap *bitmap,const rectangle *cliprect) { int offs; for (offs = 0;offs < 0x400;offs += 4) { int x,y,sprite,colour,multi,fx,fy,inc,flash,mult; sprite = spriteram16[offs+1]; if (!sprite) continue; y = spriteram16[offs]; flash=y&0x1000; if (flash && (cpu_getcurrentframe() & 1)) continue; x = spriteram16[offs+2]; colour = (x >>9) & 0x1f; fx = y & 0x2000; fy = y & 0x4000; multi = (1 << ((y & 0x0600) >> 9)) - 1; /* 1x, 2x, 4x, 8x height */ x = x & 0x01ff; y = y & 0x01ff; if (x >= 320) x -= 512; if (y >= 256) y -= 512; y = 240 - y; x = 304 - x; if (x>320) continue; sprite &= ~multi; if (fy) inc = -1; else { sprite += multi; inc = 1; } if (flip_screen) { y=240-y; x=304-x; if (fx) fx=0; else fx=1; if (fy) fy=0; else fy=1; mult=16; } else mult=-16; while (multi >= 0) { drawgfx(bitmap,machine->gfx[2], sprite - multi * inc, colour, fx,fy, x,y + mult * multi, cliprect,TRANSPARENCY_PEN,0); multi--; } } } static int dietgo_bank_callback(const int bank) { return ((bank>>4)&0x7) * 0x1000; } VIDEO_START(dietgo) { deco16_1_video_init(); deco16_set_tilemap_bank_callback(0, dietgo_bank_callback); deco16_set_tilemap_bank_callback(1, dietgo_bank_callback); } VIDEO_UPDATE(dietgo) { flip_screen_set( deco16_pf12_control[0]&0x80 ); deco16_pf12_update(deco16_pf1_rowscroll,deco16_pf2_rowscroll); fillbitmap(bitmap,machine->pens[256],cliprect); /* not verified */ deco16_tilemap_2_draw(bitmap,cliprect,TILEMAP_DRAW_OPAQUE,0); deco16_tilemap_1_draw(bitmap,cliprect,0,0); draw_sprites(machine,bitmap,cliprect); return 0; }