#include "driver.h"
#include "video/konamiic.h"
int spy_video_enable;
static int layer_colorbase[3],sprite_colorbase;
/***************************************************************************
Callbacks for the K052109
***************************************************************************/
static void tile_callback(int layer,int bank,int *code,int *color,int *flags,int *priority)
{
*flags = (*color & 0x20) ? TILE_FLIPX : 0;
*code |= ((*color & 0x03) << 8) | ((*color & 0x10) << 6) | ((*color & 0x0c) << 9)
| (bank << 13);
*color = layer_colorbase[layer] + ((*color & 0xc0) >> 6);
}
/***************************************************************************
Callbacks for the K051960
***************************************************************************/
static void sprite_callback(int *code,int *color,int *priority_mask,int *shadow)
{
/* bit 4 = priority over layer A (0 = have priority) */
/* bit 5 = priority over layer B (1 = have priority) */
*priority_mask = 0x00;
if ( *color & 0x10) *priority_mask |= 0xa;
if (~*color & 0x20) *priority_mask |= 0xc;
*color = sprite_colorbase + (*color & 0x0f);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
VIDEO_START( spy )
{
layer_colorbase[0] = 48;
layer_colorbase[1] = 0;
layer_colorbase[2] = 16;
sprite_colorbase = 32;
K052109_vh_start(machine,REGION_GFX1,NORMAL_PLANE_ORDER,tile_callback);
K051960_vh_start(machine,REGION_GFX2,NORMAL_PLANE_ORDER,sprite_callback);
}
/***************************************************************************
Display refresh
***************************************************************************/
VIDEO_UPDATE( spy )
{
K052109_tilemap_update();
fillbitmap(priority_bitmap, 0, cliprect);
if (!spy_video_enable)
{
fillbitmap(bitmap,machine->pens[16 * layer_colorbase[0]],cliprect);
return 0;
}
tilemap_draw(bitmap,cliprect,K052109_tilemap[1],TILEMAP_DRAW_OPAQUE,1);
tilemap_draw(bitmap,cliprect,K052109_tilemap[2],0,2);
K051960_sprites_draw(bitmap,cliprect,-1,-1);
tilemap_draw(bitmap,cliprect,K052109_tilemap[0],0,0);
return 0;
}