/*************************************************************************** Video Hardware description for Taito Gladiator ***************************************************************************/ #include "driver.h" UINT8 *gladiatr_videoram, *gladiatr_colorram, *gladiatr_textram; static int video_attributes; static int fg_scrollx, fg_scrolly, bg_scrollx, bg_scrolly; static int sprite_bank, sprite_buffer; static tilemap *fg_tilemap, *bg_tilemap; static int fg_tile_bank, bg_tile_bank; /*************************************************************************** Callbacks for the TileMap code ***************************************************************************/ static TILE_GET_INFO( bg_get_tile_info ) { UINT8 attr = gladiatr_colorram[tile_index]; SET_TILE_INFO( 1, gladiatr_videoram[tile_index] + ((attr & 0x07) << 8) + (bg_tile_bank << 11), (attr >> 3) ^ 0x1f, 0); } static TILE_GET_INFO( fg_get_tile_info ) { SET_TILE_INFO( 0, gladiatr_textram[tile_index] + (fg_tile_bank << 8), 0, 0); } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ VIDEO_START( ppking ) { bg_tilemap = tilemap_create(bg_get_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,8,8,32,64); fg_tilemap = tilemap_create(fg_get_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,8,8,32,64); tilemap_set_transparent_pen(fg_tilemap,0); tilemap_set_scroll_cols(bg_tilemap, 0x10); sprite_bank = 1; } VIDEO_START( gladiatr ) { bg_tilemap = tilemap_create(bg_get_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,8,8,64,32); fg_tilemap = tilemap_create(fg_get_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,8,8,64,32); tilemap_set_transparent_pen(fg_tilemap,0); tilemap_set_scrolldx(bg_tilemap, -0x30, 0x12f); tilemap_set_scrolldx(fg_tilemap, -0x30, 0x12f); sprite_bank = 2; } /*************************************************************************** Memory handlers ***************************************************************************/ WRITE8_HANDLER( gladiatr_videoram_w ) { gladiatr_videoram[offset] = data; tilemap_mark_tile_dirty(bg_tilemap,offset); } WRITE8_HANDLER( gladiatr_colorram_w ) { gladiatr_colorram[offset] = data; tilemap_mark_tile_dirty(bg_tilemap,offset); } WRITE8_HANDLER( gladiatr_textram_w ) { gladiatr_textram[offset] = data; tilemap_mark_tile_dirty(fg_tilemap,offset); } WRITE8_HANDLER( gladiatr_paletteram_w ) { int r,g,b; paletteram[offset] = data; offset &= 0x3ff; r = (paletteram[offset] >> 0) & 0x0f; g = (paletteram[offset] >> 4) & 0x0f; b = (paletteram[offset + 0x400] >> 0) & 0x0f; r = (r << 1) + ((paletteram[offset + 0x400] >> 4) & 0x01); g = (g << 1) + ((paletteram[offset + 0x400] >> 5) & 0x01); b = (b << 1) + ((paletteram[offset + 0x400] >> 6) & 0x01); palette_set_color_rgb(Machine,offset,pal5bit(r),pal5bit(g),pal5bit(b)); } WRITE8_HANDLER( gladiatr_spritebuffer_w ) { sprite_buffer = data & 1; } WRITE8_HANDLER( gladiatr_spritebank_w ) { sprite_bank = (data & 1) ? 4 : 2; } WRITE8_HANDLER( ppking_video_registers_w ) { switch (offset & 0x300) { case 0x000: tilemap_set_scrolly(bg_tilemap, offset & 0x0f, 0x100-data); break; case 0x200: if (data & 0x80) fg_scrolly = data + 0x100; else fg_scrolly = data; break; case 0x300: if (fg_tile_bank != (data & 0x03)) { fg_tile_bank = data & 0x03; tilemap_mark_all_tiles_dirty(fg_tilemap); } video_attributes = data; break; } //popmessage("%02x %02x",fg_scrolly, video_attributes); } WRITE8_HANDLER( gladiatr_video_registers_w ) { switch (offset) { case 0x000: fg_scrolly = data; break; case 0x080: if (fg_tile_bank != (data & 0x03)) { fg_tile_bank = data & 0x03; tilemap_mark_all_tiles_dirty(fg_tilemap); } if (bg_tile_bank != ((data & 0x10) >> 4)) { bg_tile_bank = (data & 0x10) >> 4; tilemap_mark_all_tiles_dirty(bg_tilemap); } video_attributes = data; break; case 0x100: fg_scrollx = data; break; case 0x200: bg_scrolly = data; break; case 0x300: bg_scrollx = data; break; } } /*************************************************************************** Display refresh ***************************************************************************/ static void draw_sprites(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect) { int offs; for (offs = 0;offs < 0x80;offs += 2) { static int tile_offset[2][2] = { {0x0,0x1}, {0x2,0x3}, }; UINT8 *src = &spriteram[offs + (sprite_buffer << 7)]; int attributes = src[0x800]; int size = (attributes & 0x10) >> 4; int bank = (attributes & 0x01) + ((attributes & 0x02) ? sprite_bank : 0); int tile_number = (src[0]+256*bank); int sx = src[0x400+1] + 256*(src[0x801]&1) - 0x38; int sy = 240 - src[0x400] - (size ? 16 : 0); int xflip = attributes & 0x04; int yflip = attributes & 0x08; int color = src[1] & 0x1f; int x,y; if (flip_screen) { xflip = !xflip; yflip = !yflip; } for (y = 0; y <= size; y++) { for (x = 0; x <= size; x++) { int ex = xflip ? (size - x) : x; int ey = yflip ? (size - y) : y; int t = tile_offset[ey][ex] + tile_number; drawgfx(bitmap,machine->gfx[2], t, color, xflip, yflip, sx+x*16, sy+y*16, cliprect,TRANSPARENCY_PEN,0); } } } } VIDEO_UPDATE( ppking ) { tilemap_draw(bitmap,cliprect,bg_tilemap,0,0); draw_sprites(machine, bitmap,cliprect); /* the fg layer just selects the upper palette bank on underlying pixels */ { mame_bitmap *flagsbitmap; int sx = cliprect->min_x; int sy = cliprect->min_y; tilemap_get_pixmap( fg_tilemap ); flagsbitmap = tilemap_get_flagsmap( fg_tilemap ); while( sy <= cliprect->max_y ) { int x = sx; int y = (sy + fg_scrolly) & 0x1ff; UINT16 *dest = BITMAP_ADDR16(bitmap, sy, sx); while( x <= cliprect->max_x ) { if( *BITMAP_ADDR8(flagsbitmap, y, x)&TILEMAP_PIXEL_LAYER0 ) { *dest += 512; } x++; dest++; } /* next x */ sy++; } /* next y */ } return 0; } VIDEO_UPDATE( gladiatr ) { if (video_attributes & 0x20) { int scroll; scroll = bg_scrollx + ((video_attributes & 0x04) << 6); tilemap_set_scrollx(bg_tilemap, 0, scroll ^ (flip_screen ? 0x0f : 0)); scroll = fg_scrollx + ((video_attributes & 0x08) << 5); tilemap_set_scrollx(fg_tilemap, 0, scroll ^ (flip_screen ? 0x0f : 0)); // always 0 anyway tilemap_set_scrolly(bg_tilemap, 0, bg_scrolly); tilemap_set_scrolly(fg_tilemap, 0, fg_scrolly); tilemap_draw(bitmap,cliprect,bg_tilemap,0,0); draw_sprites(machine, bitmap,cliprect); tilemap_draw(bitmap,cliprect,fg_tilemap,0,0); } else fillbitmap( bitmap, get_black_pen(machine), cliprect ); return 0; }