/* * Thunder Ceptor board * emulate video hardware */ #include "driver.h" #include "namcoic.h" #define TX_TILE_OFFSET_CENTER (32 * 2) #define TX_TILE_OFFSET_RIGHT (32 * 0 + 2) #define TX_TILE_OFFSET_LEFT (32 * 31 + 2) #define SPR_TRANS_COLOR (0xff + 768) #define SPR_MASK_COLOR (0xfe + 768) UINT8 *tceptor_tile_ram; UINT8 *tceptor_tile_attr; UINT8 *tceptor_bg_ram; UINT16 *tceptor_sprite_ram; static int sprite16; static int sprite32; static int bg; static tilemap *tx_tilemap; static tilemap *bg1_tilemap; static tilemap *bg2_tilemap; static INT32 bg1_scroll_x, bg1_scroll_y; static INT32 bg2_scroll_x, bg2_scroll_y; static mame_bitmap *temp_bitmap; static int is_mask_spr[1024/16]; /*******************************************************************/ PALETTE_INIT( tceptor ) { int totcolors, totlookup; int i; totcolors = machine->drv->total_colors; totlookup = machine->drv->color_table_len; for (i = 0; i < totcolors; i++) { int bit0, bit1, bit2, bit3, r, g, b; bit0 = (color_prom[0] >> 0) & 0x01; bit1 = (color_prom[0] >> 1) & 0x01; bit2 = (color_prom[0] >> 2) & 0x01; bit3 = (color_prom[0] >> 3) & 0x01; r = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; bit0 = (color_prom[totcolors] >> 0) & 0x01; bit1 = (color_prom[totcolors] >> 1) & 0x01; bit2 = (color_prom[totcolors] >> 2) & 0x01; bit3 = (color_prom[totcolors] >> 3) & 0x01; g = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; bit0 = (color_prom[2*totcolors] >> 0) & 0x01; bit1 = (color_prom[2*totcolors] >> 1) & 0x01; bit2 = (color_prom[2*totcolors] >> 2) & 0x01; bit3 = (color_prom[2*totcolors] >> 3) & 0x01; b = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3; palette_set_color(machine, i, MAKE_RGB(r, g, b)); color_prom++; } color_prom += 2 * totcolors; /* color_prom now points to the beginning of the lookup table */ /* color lookup table: 0- +1024 ( 4 * 256) colors: text (use 0- 256 colors) 1024- +1024 (16 * 64) colors: sprite (use 768- 256 colors) 2048- +512 ( 8 * 64) colors: bg (use 0- 512 colors) 3840- +256 ( 4 * 64) colors: road (use 512- 256 colors) */ /* tiles lookup table (1024 colors) */ for (i = 0; i < 1024;i++) colortable[i] = *color_prom++; /* road lookup table (256 colors) */ for (i = 0; i < 256; i++) colortable[i + 0xf00] = *(color_prom++) + 512; /* sprites lookup table (1024 colors) */ for (i = 0;i < 1024; i++) colortable[i + 1024] = *(color_prom++) + 768; /* background: lookup prom is not presented, use prom directly (512 colors) */ for (i = 0;i < 512; i++) colortable[i + 2048] = i; /* setup sprite mask color map */ /* tceptor2: only 0x23 */ memset(is_mask_spr, 0, sizeof is_mask_spr); for (i = 0; i < 1024; i++) if (colortable[i + 1024] == SPR_MASK_COLOR) is_mask_spr[i / 16] = 1; } /*******************************************************************/ INLINE int get_tile_addr(int tile_index) { int x = tile_index / 28; int y = tile_index % 28; switch (x) { case 0: return TX_TILE_OFFSET_LEFT + y; case 33: return TX_TILE_OFFSET_RIGHT + y; } return TX_TILE_OFFSET_CENTER + (x - 1) + y * 32; } static TILE_GET_INFO( get_tx_tile_info ) { int offset = get_tile_addr(tile_index); int code = tceptor_tile_ram[offset]; int color = tceptor_tile_attr[offset]; SET_TILE_INFO(0, code, color, 0); } static void tile_mark_dirty(int offset) { int x = -1; int y = -1; if (offset >= TX_TILE_OFFSET_LEFT && offset < TX_TILE_OFFSET_LEFT + 28) { x = 0; y = offset - TX_TILE_OFFSET_LEFT; } else if (offset >= TX_TILE_OFFSET_RIGHT && offset < TX_TILE_OFFSET_RIGHT + 28) { x = 33; y = offset - TX_TILE_OFFSET_RIGHT; } else if (offset >= TX_TILE_OFFSET_CENTER && offset < TX_TILE_OFFSET_CENTER + 32 * 28) { offset -= TX_TILE_OFFSET_CENTER; x = (offset % 32) + 1; y = offset / 32; } if (x >= 0) tilemap_mark_tile_dirty(tx_tilemap, x * 28 + y); } READ8_HANDLER( tceptor_tile_ram_r ) { return tceptor_tile_ram[offset]; } WRITE8_HANDLER( tceptor_tile_ram_w ) { if (tceptor_tile_ram[offset] != data) { tceptor_tile_ram[offset] = data; tile_mark_dirty(offset); } } READ8_HANDLER( tceptor_tile_attr_r ) { return tceptor_tile_attr[offset]; } WRITE8_HANDLER( tceptor_tile_attr_w ) { if (tceptor_tile_attr[offset] != data) { tceptor_tile_attr[offset] = data; tile_mark_dirty(offset); } } /*******************************************************************/ static TILE_GET_INFO( get_bg1_tile_info ) { UINT16 data = tceptor_bg_ram[tile_index * 2] | (tceptor_bg_ram[tile_index * 2 + 1] << 8); int code = (data & 0x3ff) | 0x000; int color = (data & 0xfc00) >> 10; SET_TILE_INFO(bg, code, color, 0); } static TILE_GET_INFO( get_bg2_tile_info ) { UINT16 data = tceptor_bg_ram[tile_index * 2 + 0x1000] | (tceptor_bg_ram[tile_index * 2 + 1 + 0x1000] << 8); int code = (data & 0x3ff) | 0x400; int color = (data & 0xfc00) >> 10; SET_TILE_INFO(bg, code, color, 0); } READ8_HANDLER( tceptor_bg_ram_r ) { return tceptor_bg_ram[offset]; } WRITE8_HANDLER( tceptor_bg_ram_w ) { tceptor_bg_ram[offset] = data; offset /= 2; if (offset < 0x800) tilemap_mark_tile_dirty(bg1_tilemap, offset); else tilemap_mark_tile_dirty(bg2_tilemap, offset - 0x800); } WRITE8_HANDLER( tceptor_bg_scroll_w ) { switch (offset) { case 0: bg1_scroll_x &= 0xff; bg1_scroll_x |= data << 8; break; case 1: bg1_scroll_x &= 0xff00; bg1_scroll_x |= data; break; case 2: bg1_scroll_y = data; break; case 4: bg2_scroll_x &= 0xff; bg2_scroll_x |= data << 8; break; case 5: bg2_scroll_x &= 0xff00; bg2_scroll_x |= data; break; case 6: bg2_scroll_y = data; break; } } /*******************************************************************/ static void decode_bg(running_machine *machine, int region) { static const gfx_layout bg_layout = { 8, 8, 2048, 3, { 0x40000+4, 0, 4 }, { 0, 1, 2, 3, 8, 9, 10, 11 }, { 0, 16, 32, 48, 64, 80, 96, 112 }, 128 }; int gfx_index = bg; UINT8 *src = memory_region(region) + 0x8000; UINT8 *buffer; int len = 0x8000; int i; buffer = malloc_or_die(len); /* expand rom tc2-19.10d */ for (i = 0; i < len / 2; i++) { buffer[i*2+1] = src[i] & 0x0f; buffer[i*2] = (src[i] & 0xf0) >> 4; } memcpy(src, buffer, len); free(buffer); /* decode the graphics */ machine->gfx[gfx_index] = allocgfx(&bg_layout); decodegfx(machine->gfx[gfx_index], memory_region(region), 0, machine->gfx[gfx_index]->total_elements); /* set the color information */ machine->gfx[gfx_index]->color_base = 2048; machine->gfx[gfx_index]->total_colors = 64; } static void decode_sprite(running_machine *machine, int gfx_index, const gfx_layout *layout, const void *data) { /* decode the graphics */ machine->gfx[gfx_index] = allocgfx(layout); decodegfx(machine->gfx[gfx_index], data, 0, machine->gfx[gfx_index]->total_elements); /* set the color information */ machine->gfx[gfx_index]->color_base = 1024; machine->gfx[gfx_index]->total_colors = 64; } // fix sprite order static void decode_sprite16(running_machine *machine, int region) { static const gfx_layout spr16_layout = { 16, 16, 512, 4, { 0x00000, 0x00004, 0x40000, 0x40004 }, { 0*8, 0*8+1, 0*8+2, 0*8+3, 1*8, 1*8+1, 1*8+2, 1*8+3, 2*8, 2*8+1, 2*8+2, 2*8+3, 3*8, 3*8+1, 3*8+2, 3*8+3 }, { 0*2*16, 1*2*16, 2*2*16, 3*2*16, 4*2*16, 5*2*16, 6*2*16, 7*2*16, 8*2*16, 9*2*16, 10*2*16, 11*2*16, 12*2*16, 13*2*16, 14*2*16, 15*2*16 }, 2*16*16 }; UINT8 *src = memory_region(region); int len = memory_region_length(region); UINT8 *dst; int i, y; dst = malloc_or_die(len); for (i = 0; i < len / (4*4*16); i++) for (y = 0; y < 16; y++) { memcpy(&dst[(i*4 + 0) * (2*16*16/8) + y * (2*16/8)], &src[i * (2*32*32/8) + y * (2*32/8)], 4); memcpy(&dst[(i*4 + 1) * (2*16*16/8) + y * (2*16/8)], &src[i * (2*32*32/8) + y * (2*32/8) + (4*8/8)], 4); memcpy(&dst[(i*4 + 2) * (2*16*16/8) + y * (2*16/8)], &src[i * (2*32*32/8) + y * (2*32/8) + (16*2*32/8)], 4); memcpy(&dst[(i*4 + 3) * (2*16*16/8) + y * (2*16/8)], &src[i * (2*32*32/8) + y * (2*32/8) + (4*8/8) + (16*2*32/8)], 4); } decode_sprite(machine, sprite16, &spr16_layout, dst); free(dst); } // fix sprite order static void decode_sprite32(running_machine *machine, int region) { static const gfx_layout spr32_layout = { 32, 32, 1024, 4, { 0x000000, 0x000004, 0x200000, 0x200004 }, { 0*8, 0*8+1, 0*8+2, 0*8+3, 1*8, 1*8+1, 1*8+2, 1*8+3, 2*8, 2*8+1, 2*8+2, 2*8+3, 3*8, 3*8+1, 3*8+2, 3*8+3, 4*8, 4*8+1, 4*8+2, 4*8+3, 5*8, 5*8+1, 5*8+2, 5*8+3, 6*8, 6*8+1, 6*8+2, 6*8+3, 7*8, 7*8+1, 7*8+2, 7*8+3 }, { 0*2*32, 1*2*32, 2*2*32, 3*2*32, 4*2*32, 5*2*32, 6*2*32, 7*2*32, 8*2*32, 9*2*32, 10*2*32, 11*2*32, 12*2*32, 13*2*32, 14*2*32, 15*2*32, 16*2*32, 17*2*32, 18*2*32, 19*2*32, 20*2*32, 21*2*32, 22*2*32, 23*2*32, 24*2*32, 25*2*32, 26*2*32, 27*2*32, 28*2*32, 29*2*32, 30*2*32, 31*2*32 }, 2*32*32 }; UINT8 *src = memory_region(region); int len = memory_region_length(region); int total = spr32_layout.total; int size = spr32_layout.charincrement / 8; UINT8 *dst; int i; dst = malloc_or_die(len); memset(dst, 0, len); for (i = 0; i < total; i++) { int code; code = (i & 0x07f) | ((i & 0x180) << 1) | 0x80; code &= ~((i & 0x200) >> 2); memcpy(&dst[size * (i + 0)], &src[size * (code + 0)], size); memcpy(&dst[size * (i + total)], &src[size * (code + total)], size); } decode_sprite(machine, sprite32, &spr32_layout, dst); free(dst); } static void mark_all_tiles_dirty(void) { tilemap_mark_all_tiles_dirty(tx_tilemap); tilemap_mark_all_tiles_dirty(bg1_tilemap); tilemap_mark_all_tiles_dirty(bg2_tilemap); } VIDEO_START( tceptor ) { int gfx_index; /* find first empty slot to decode gfx */ for (gfx_index = 0; gfx_index < MAX_GFX_ELEMENTS; gfx_index++) if (machine->gfx[gfx_index] == 0) break; assert(gfx_index + 4 <= MAX_GFX_ELEMENTS); bg = gfx_index++; decode_bg(machine, REGION_GFX2); sprite16 = gfx_index++; decode_sprite16(machine, REGION_GFX3); sprite32 = gfx_index++; decode_sprite32(machine, REGION_GFX4); /* allocate temp bitmaps */ temp_bitmap = auto_bitmap_alloc(machine->screen[0].width, machine->screen[0].height, machine->screen[0].format); namco_road_init(machine, gfx_index); namco_road_set_transparent_color(machine->remapped_colortable[0xfff]); tx_tilemap = tilemap_create(get_tx_tile_info, tilemap_scan_cols, TILEMAP_TYPE_COLORTABLE, 8, 8, 34, 28); tilemap_set_scrollx(tx_tilemap, 0, -2*8); tilemap_set_scrolly(tx_tilemap, 0, 0); tilemap_set_transparent_pen(tx_tilemap, 7); bg1_tilemap = tilemap_create(get_bg1_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 64, 32); bg2_tilemap = tilemap_create(get_bg2_tile_info, tilemap_scan_rows, TILEMAP_TYPE_PEN, 8, 8, 64, 32); state_save_register_global(bg1_scroll_x); state_save_register_global(bg1_scroll_y); state_save_register_global(bg2_scroll_x); state_save_register_global(bg2_scroll_y); state_save_register_func_postload(mark_all_tiles_dirty); } /*******************************************************************/ /* Sprite data format 000: zzzzzzBB BTTTTTTT 002: ZZZZZZPP PPCCCCCC 100: fFL---YY YYYYYYYY 102: ------XX XXXXXXXX B: bank T: number P: priority C: color X: x Y: y L: large sprite F: flip x f: flip y Z: zoom x z: zoom y */ static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect, int sprite_priority) { UINT16 *mem1 = &tceptor_sprite_ram[0x000/2]; UINT16 *mem2 = &tceptor_sprite_ram[0x100/2]; int need_mask = 0; int i; for (i = 0; i < 0x100; i += 2) { int scalex = (mem1[1 + i] & 0xfc00) << 1; int scaley = (mem1[0 + i] & 0xfc00) << 1; int pri = 7 - ((mem1[1 + i] & 0x3c0) >> 6); if (pri == sprite_priority && scalex && scaley) { int x = mem2[1 + i] & 0x3ff; int y = 512 - (mem2[0 + i] & 0x3ff); int flipx = mem2[0 + i] & 0x4000; int flipy = mem2[0 + i] & 0x8000; int color = mem1[1 + i] & 0x3f; int gfx; int code; if (mem2[0 + i] & 0x2000) { gfx = sprite32; code = mem1[0 + i] & 0x3ff; } else { gfx = sprite16; code = mem1[0 + i] & 0x1ff; scaley *= 2; } if (is_mask_spr[color]) { if (!need_mask) { // backup previous bitmap copybitmap(temp_bitmap, bitmap, 0, 0, 0, 0, cliprect, TRANSPARENCY_NONE, 0); } need_mask = 1; } // round off scalex += 0x800; scaley += 0x800; x -= 64; y -= 78; drawgfxzoom(bitmap, machine->gfx[gfx], code, color, flipx, flipy, x, y, cliprect, TRANSPARENCY_COLOR, SPR_TRANS_COLOR, scalex, scaley); } } /* if SPR_MASK_COLOR pen is used, restore pixels from previous bitmap */ if (need_mask) { int x, y; for (x = cliprect->min_x; x <= cliprect->max_x; x++) for (y = cliprect->min_y; y <= cliprect->max_y; y++) if (*BITMAP_ADDR16(bitmap, y, x) == SPR_MASK_COLOR) { // restore pixel *BITMAP_ADDR16(bitmap, y, x) = *BITMAP_ADDR16(temp_bitmap, y, x); } } } VIDEO_UPDATE( tceptor ) { rectangle rect; int pri; int bg_center = 144 - ((((bg1_scroll_x + bg2_scroll_x ) & 0x1ff) - 288) / 2); // left background rect = *cliprect; rect.max_x = bg_center; tilemap_set_scrollx(bg1_tilemap, 0, bg1_scroll_x + 12); tilemap_set_scrolly(bg1_tilemap, 0, bg1_scroll_y + 20); //32? tilemap_draw(bitmap, &rect, bg1_tilemap, 0, 0); // right background rect.min_x = bg_center; rect.max_x = cliprect->max_x; tilemap_set_scrollx(bg2_tilemap, 0, bg2_scroll_x + 20); tilemap_set_scrolly(bg2_tilemap, 0, bg2_scroll_y + 20); // 32? tilemap_draw(bitmap, &rect, bg2_tilemap, 0, 0); for (pri = 0; pri < 8; pri++) { namco_road_draw(machine, bitmap, cliprect, pri * 2); namco_road_draw(machine, bitmap, cliprect, pri * 2 + 1); draw_sprites(machine, bitmap, cliprect, pri); } tilemap_draw(bitmap, cliprect, tx_tilemap, 0, 0); return 0; }