/***************************************************************************
D-Con video hardware.
***************************************************************************/
#include "driver.h"
UINT16 *dcon_back_data,*dcon_fore_data,*dcon_mid_data,*dcon_scroll_ram,*dcon_textram;
static tilemap *background_layer,*foreground_layer,*midground_layer,*text_layer;
static UINT16 dcon_enable;
static int dcon_gfx_bank_select;
/******************************************************************************/
READ16_HANDLER( dcon_control_r )
{
return dcon_enable;
}
WRITE16_HANDLER( dcon_control_w )
{
if (ACCESSING_LSB)
{
dcon_enable=data;
if ((dcon_enable&4)==4)
tilemap_set_enable(foreground_layer,0);
else
tilemap_set_enable(foreground_layer,1);
if ((dcon_enable&2)==2)
tilemap_set_enable(midground_layer,0);
else
tilemap_set_enable(midground_layer,1);
if ((dcon_enable&1)==1)
tilemap_set_enable(background_layer,0);
else
tilemap_set_enable(background_layer,1);
}
}
WRITE16_HANDLER( dcon_gfxbank_w )
{
if (data&1)
dcon_gfx_bank_select=0x1000;
else
dcon_gfx_bank_select=0;
}
WRITE16_HANDLER( dcon_background_w )
{
COMBINE_DATA(&dcon_back_data[offset]);
tilemap_mark_tile_dirty(background_layer,offset);
}
WRITE16_HANDLER( dcon_foreground_w )
{
COMBINE_DATA(&dcon_fore_data[offset]);
tilemap_mark_tile_dirty(foreground_layer,offset);
}
WRITE16_HANDLER( dcon_midground_w )
{
COMBINE_DATA(&dcon_mid_data[offset]);
tilemap_mark_tile_dirty(midground_layer,offset);
}
WRITE16_HANDLER( dcon_text_w )
{
COMBINE_DATA(&dcon_textram[offset]);
tilemap_mark_tile_dirty(text_layer,offset);
}
static TILE_GET_INFO( get_back_tile_info )
{
int tile=dcon_back_data[tile_index];
int color=(tile>>12)&0xf;
tile&=0xfff;
SET_TILE_INFO(
1,
tile,
color,
0);
}
static TILE_GET_INFO( get_fore_tile_info )
{
int tile=dcon_fore_data[tile_index];
int color=(tile>>12)&0xf;
tile&=0xfff;
SET_TILE_INFO(
2,
tile,
color,
0);
}
static TILE_GET_INFO( get_mid_tile_info )
{
int tile=dcon_mid_data[tile_index];
int color=(tile>>12)&0xf;
tile&=0xfff;
SET_TILE_INFO(
3,
tile|dcon_gfx_bank_select,
color,
0);
}
static TILE_GET_INFO( get_text_tile_info )
{
int tile = dcon_textram[tile_index];
int color=(tile>>12)&0xf;
tile&=0xfff;
SET_TILE_INFO(
0,
tile,
color,
0);
}
VIDEO_START( dcon )
{
background_layer = tilemap_create(get_back_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN, 16,16,32,32);
foreground_layer = tilemap_create(get_fore_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN,16,16,32,32);
midground_layer = tilemap_create(get_mid_tile_info, tilemap_scan_rows,TILEMAP_TYPE_PEN,16,16,32,32);
text_layer = tilemap_create(get_text_tile_info,tilemap_scan_rows,TILEMAP_TYPE_PEN, 8,8,64,32);
tilemap_set_transparent_pen(midground_layer,15);
tilemap_set_transparent_pen(foreground_layer,15);
tilemap_set_transparent_pen(text_layer,15);
dcon_gfx_bank_select = 0;
}
static void draw_sprites(running_machine* machine, mame_bitmap *bitmap,const rectangle *cliprect)
{
int offs,fx,fy,x,y,color,sprite;
int dx,dy,ax,ay,inc,pri_mask = 0;
for (offs = 0;offs < 0x400;offs += 4)
{
if ((spriteram16[offs+0]&0x8000)!=0x8000) continue;
sprite = spriteram16[offs+1];
switch((sprite>>14) & 3)
{
case 0: pri_mask = 0xf0; // above foreground layer
break;
case 1: pri_mask = 0xfc; // above midground layer
break;
case 2: pri_mask = 0xfe; // above background layer
break;
case 3: pri_mask = 0; // above text layer
break;
}
sprite &= 0x3fff;
y = spriteram16[offs+3];
x = spriteram16[offs+2];
if (x&0x8000) x=0-(0x200-(x&0x1ff));
else x&=0x1ff;
if (y&0x8000) y=0-(0x200-(y&0x1ff));
else y&=0x1ff;
color = spriteram16[offs+0]&0x3f;
fx = spriteram16[offs+0]&0x4000;
fy = spriteram16[offs+0]&0x2000;
dy=((spriteram16[offs+0]&0x0380)>>7)+1;
dx=((spriteram16[offs+0]&0x1c00)>>10)+1;
inc = 0;
for (ax=0; ax<dx; ax++)
for (ay=0; ay<dy; ay++) {
if (!fx && !fy)
{
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+ax*16,y+ay*16,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+ax*16,y+ay*16 + 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+ax*16,y+ay*16 - 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
}
else if (fx && !fy)
{
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+(dx-1-ax)*16,y+ay*16,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+(dx-1-ax)*16,y+ay*16 + 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+(dx-1-ax)*16,y+ay*16 - 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
}
else if (!fx && fy)
{
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+ax*16,y+(dy-1-ay)*16,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+ax*16,y+(dy-1-ay)*16 + 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+ax*16,y+(dy-1-ay)*16 - 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
}
else
{
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+(dx-1-ax)*16,y+(dy-1-ay)*16,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+(dx-1-ax)*16,y+(dy-1-ay)*16 + 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
// wrap around y
pdrawgfx(bitmap,machine->gfx[4],
sprite + inc,
color,fx,fy,x+(dx-1-ax)*16,y+(dy-1-ay)*16 - 512,
cliprect,TRANSPARENCY_PEN,15,pri_mask);
}
inc++;
}
}
}
VIDEO_UPDATE( dcon )
{
fillbitmap(priority_bitmap,0,cliprect);
/* Setup the tilemaps */
tilemap_set_scrollx( background_layer,0, dcon_scroll_ram[0] );
tilemap_set_scrolly( background_layer,0, dcon_scroll_ram[1] );
tilemap_set_scrollx( midground_layer, 0, dcon_scroll_ram[2] );
tilemap_set_scrolly( midground_layer, 0, dcon_scroll_ram[3] );
tilemap_set_scrollx( foreground_layer,0, dcon_scroll_ram[4] );
tilemap_set_scrolly( foreground_layer,0, dcon_scroll_ram[5] );
if ((dcon_enable&1)!=1)
tilemap_draw(bitmap,cliprect,background_layer,0,0);
else
fillbitmap(bitmap,machine->pens[15],cliprect); /* Should always be black, not pen 15 */
tilemap_draw(bitmap,cliprect,midground_layer,0,1);
tilemap_draw(bitmap,cliprect,foreground_layer,0,2);
tilemap_draw(bitmap,cliprect,text_layer,0,4);
draw_sprites(machine,bitmap,cliprect);
return 0;
}
VIDEO_UPDATE( sdgndmps )
{
static int last_gfx_bank=0;
fillbitmap(priority_bitmap,0,cliprect);
/* Gfx banking */
if (last_gfx_bank!=dcon_gfx_bank_select)
{
tilemap_mark_all_tiles_dirty(midground_layer);
last_gfx_bank=dcon_gfx_bank_select;
}
/* Setup the tilemaps */
tilemap_set_scrollx( background_layer,0, dcon_scroll_ram[0]+128 );
tilemap_set_scrolly( background_layer,0, dcon_scroll_ram[1] );
tilemap_set_scrollx( midground_layer, 0, dcon_scroll_ram[2]+128 );
tilemap_set_scrolly( midground_layer, 0, dcon_scroll_ram[3] );
tilemap_set_scrollx( foreground_layer,0, dcon_scroll_ram[4]+128 );
tilemap_set_scrolly( foreground_layer,0, dcon_scroll_ram[5] );
tilemap_set_scrollx( text_layer,0, /*dcon_scroll_ram[6] + */ 128 );
tilemap_set_scrolly( text_layer,0, /*dcon_scroll_ram[7] + */ 0 );
if ((dcon_enable&1)!=1)
tilemap_draw(bitmap,cliprect,background_layer,0,0);
else
fillbitmap(bitmap,machine->pens[15],cliprect); /* Should always be black, not pen 15 */
tilemap_draw(bitmap,cliprect,midground_layer,0,1);
tilemap_draw(bitmap,cliprect,foreground_layer,0,2);
tilemap_draw(bitmap,cliprect,text_layer,0,4);
draw_sprites(machine,bitmap,cliprect);
return 0;
}