/*************************************************************************
Atari Super Breakout hardware
*************************************************************************/
#include "driver.h"
#include "includes/sbrkout.h"
UINT8 *sbrkout_horiz_ram;
UINT8 *sbrkout_vert_ram;
static tilemap *bg_tilemap;
WRITE8_HANDLER( sbrkout_videoram_w )
{
videoram[offset] = data;
tilemap_mark_tile_dirty(bg_tilemap, offset);
}
static TILE_GET_INFO( get_bg_tile_info )
{
int code = (videoram[tile_index] & 0x80) ? videoram[tile_index] : 0;
SET_TILE_INFO(0, code, 0, 0);
}
VIDEO_START( sbrkout )
{
bg_tilemap = tilemap_create(get_bg_tile_info, tilemap_scan_rows,
TILEMAP_TYPE_PEN, 8, 8, 32, 32);
}
static void draw_balls(running_machine *machine, mame_bitmap *bitmap, const rectangle *cliprect)
{
int ball;
for (ball=2; ball>=0; ball--)
{
int code = ((sbrkout_vert_ram[ball * 2 + 1] & 0x80) >> 7);
int sx = 31 * 8 - sbrkout_horiz_ram[ball * 2];
int sy = 30 * 8 - sbrkout_vert_ram[ball * 2];
drawgfx(bitmap, machine->gfx[1],
code, 0,
0, 0,
sx, sy,
cliprect,
TRANSPARENCY_PEN, 0);
}
}
VIDEO_UPDATE( sbrkout )
{
tilemap_draw(bitmap, cliprect, bg_tilemap, 0, 0);
draw_balls(machine, bitmap, cliprect);
return 0;
}