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#include "driver.h"
#include "video/konamiic.h"
static int bg_colorbase,sprite_colorbase,zoom_colorbase;
/***************************************************************************
Callbacks for the K053245
***************************************************************************/
static void sprite_callback(int *code,int *color,int *priority_mask)
{
#if 0
if (input_code_pressed(KEYCODE_Q) && (*color & 0x80)) *color = rand();
if (input_code_pressed(KEYCODE_W) && (*color & 0x40)) *color = rand();
if (input_code_pressed(KEYCODE_E) && (*color & 0x20)) *color = rand();
if (input_code_pressed(KEYCODE_R) && (*color & 0x10)) *color = rand();
#endif
*priority_mask = (*color & 0x10) ? 0 : 0x02;
*color = sprite_colorbase + (*color & 0x0f);
}
/***************************************************************************
Callbacks for the K051316
***************************************************************************/
static void zoom_callback(int *code,int *color,int *flags)
{
*flags = TILE_FLIPYX((*color & 0xc0) >> 6);
*code |= ((*color & 0x0f) << 8);
*color = zoom_colorbase + ((*color & 0x30) >> 4);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
VIDEO_START( rollerg )
{
bg_colorbase = 16;
sprite_colorbase = 16;
zoom_colorbase = 0;
K053245_vh_start(machine,0,REGION_GFX1,NORMAL_PLANE_ORDER,sprite_callback);
K051316_vh_start_0(machine,REGION_GFX2,4,FALSE,0,zoom_callback);
K051316_set_offset(0, 22, 1);
}
/***************************************************************************
Display refresh
***************************************************************************/
VIDEO_UPDATE( rollerg )
{
fillbitmap(priority_bitmap,0,cliprect);
fillbitmap(bitmap,machine->pens[16 * bg_colorbase],cliprect);
K051316_zoom_draw_0(bitmap,cliprect,0,1);
K053245_sprites_draw(0,bitmap,cliprect);
return 0;
}
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