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AmigActive 10
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vidhrdw
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rollerg.c
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C/C++ Source or Header
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2000-03-18
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3KB
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106 lines
#include "driver.h"
#include "vidhrdw/generic.h"
#include "vidhrdw/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 (keyboard_pressed(KEYCODE_Q) && (*color & 0x80)) *color = rand();
if (keyboard_pressed(KEYCODE_W) && (*color & 0x40)) *color = rand();
if (keyboard_pressed(KEYCODE_E) && (*color & 0x20)) *color = rand();
if (keyboard_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)
{
tile_info.flags = TILE_FLIPYX((*color & 0xc0) >> 6);
*code |= ((*color & 0x0f) << 8);
*color = zoom_colorbase + ((*color & 0x30) >> 4);
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
int rollerg_vh_start(void)
{
bg_colorbase = 16;
sprite_colorbase = 16;
zoom_colorbase = 0;
if (K053245_vh_start(REGION_GFX1,NORMAL_PLANE_ORDER,sprite_callback))
return 1;
if (K051316_vh_start_0(REGION_GFX2,4,zoom_callback))
{
K053245_vh_stop();
return 1;
}
K051316_set_offset(0, 22, 1);
return 0;
}
void rollerg_vh_stop(void)
{
K053245_vh_stop();
K051316_vh_stop_0();
}
/***************************************************************************
Display refresh
***************************************************************************/
void rollerg_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
int i;
K051316_tilemap_update_0();
palette_init_used_colors();
K053245_mark_sprites_colors();
/* set back pen for the zoom layer */
for (i = 0;i < 16;i++)
palette_used_colors[(zoom_colorbase + i) * 16] = PALETTE_COLOR_TRANSPARENT;
palette_used_colors[16 * bg_colorbase] |= PALETTE_COLOR_VISIBLE;
if (palette_recalc())
tilemap_mark_all_pixels_dirty(ALL_TILEMAPS);
tilemap_render(ALL_TILEMAPS);
fillbitmap(priority_bitmap,0,NULL);
fillbitmap(bitmap,Machine->pens[16 * bg_colorbase],&Machine->drv->visible_area);
K051316_zoom_draw_0(bitmap,1);
K053245_sprites_draw(bitmap);
}