/***************************************************************************
video.c
Functions to emulate the video hardware of the machine.
***************************************************************************/
#include "driver.h"
static int flipscreen;
/***************************************************************************
Convert the color PROMs into a more useable format.
***************************************************************************/
PALETTE_INIT( wiping )
{
int i;
#define TOTAL_COLORS(gfxn) (machine->gfx[gfxn]->total_colors * machine->gfx[gfxn]->color_granularity)
#define COLOR(gfxn,offs) (colortable[machine->drv->gfxdecodeinfo[gfxn].color_codes_start + (offs)])
for (i = 0;i < machine->drv->total_colors;i++)
{
int bit0,bit1,bit2,r,g,b;
/* red component */
bit0 = (*color_prom >> 0) & 0x01;
bit1 = (*color_prom >> 1) & 0x01;
bit2 = (*color_prom >> 2) & 0x01;
r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* green component */
bit0 = (*color_prom >> 3) & 0x01;
bit1 = (*color_prom >> 4) & 0x01;
bit2 = (*color_prom >> 5) & 0x01;
g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* blue component */
bit0 = (*color_prom >> 6) & 0x01;
bit1 = (*color_prom >> 7) & 0x01;
b = 0x4f * bit0 + 0xa8 * bit1;
palette_set_color(machine,i,MAKE_RGB(r,g,b));
color_prom++;
}
/* color_prom now points to the beginning of the lookup table */
/* chars use colors 0-15 */
for (i = 0;i < TOTAL_COLORS(0);i++)
COLOR(0,i ^ 3) = *(color_prom++) & 0x0f;
/* sprites use colors 16-31 */
for (i = 0;i < TOTAL_COLORS(1);i++)
COLOR(1,i ^ 3) = (*(color_prom++) & 0x0f) + 0x10;
}
WRITE8_HANDLER( wiping_flipscreen_w )
{
if (flipscreen != (data & 1))
{
flipscreen = (data & 1);
memset(dirtybuffer,1,videoram_size);
}
}
VIDEO_UPDATE( wiping )
{
int offs;
for (offs = videoram_size - 1; offs > 0; offs--)
{
if (dirtybuffer[offs])
{
int mx,my,sx,sy;
dirtybuffer[offs] = 0;
mx = offs % 32;
my = offs / 32;
if (my < 2)
{
sx = my + 34;
sy = mx - 2;
}
else if (my >= 30)
{
sx = my - 30;
sy = mx - 2;
}
else
{
sx = mx + 2;
sy = my - 2;
}
if (flipscreen)
{
sx = 35 - sx;
sy = 27 - sy;
}
drawgfx(tmpbitmap,machine->gfx[0],
videoram[offs],
colorram[offs] & 0x3f,
flipscreen,flipscreen,
sx*8,sy*8,
&machine->screen[0].visarea,TRANSPARENCY_NONE,0);
}
}
copybitmap(bitmap,tmpbitmap,0,0,0,0,&machine->screen[0].visarea,TRANSPARENCY_NONE,0);
/* Note, we're counting up on purpose ! */
/* This way the vacuum cleaner is always on top */
for (offs = 0x0; offs < 128; offs += 2) {
int sx,sy,flipx,flipy,otherbank;
sx = spriteram[offs+0x100+1] + ((spriteram[offs+0x81] & 0x01) << 8) - 40;
sy = 224 - spriteram[offs+0x100];
otherbank = spriteram[offs+0x80] & 0x01;
flipy = spriteram[offs] & 0x40;
flipx = spriteram[offs] & 0x80;
if (flipscreen)
{
sy = 208 - sy;
flipx = !flipx;
flipy = !flipy;
}
drawgfx(bitmap,machine->gfx[1],
(spriteram[offs] & 0x3f) + 64 * otherbank,
spriteram[offs+1] & 0x3f,
flipx,flipy,
sx,sy,
&machine->screen[0].visarea,TRANSPARENCY_COLOR,0x1f);
}
/* redraw high priority chars */
for (offs = videoram_size - 1; offs > 0; offs--)
{
if (colorram[offs] & 0x80)
{
int mx,my,sx,sy;
mx = offs % 32;
my = offs / 32;
if (my < 2)
{
sx = my + 34;
sy = mx - 2;
}
else if (my >= 30)
{
sx = my - 30;
sy = mx - 2;
}
else
{
sx = mx + 2;
sy = my - 2;
}
if (flipscreen)
{
sx = 35 - sx;
sy = 27 - sy;
}
drawgfx(bitmap,machine->gfx[0],
videoram[offs],
colorram[offs] & 0x3f,
flipscreen,flipscreen,
sx*8,sy*8,
&machine->screen[0].visarea,TRANSPARENCY_NONE,0);
}
}
#if 0
{
int i,j;
extern UINT8 *wiping_soundregs;
for (i = 0;i < 8;i++)
{
for (j = 0;j < 8;j++)
{
char buf[40];
sprintf(buf,"%01x",wiping_soundregs[i*8+j]&0xf);
ui_draw_text(buf,j*10,i*8);
}
}
for (i = 0;i < 8;i++)
{
for (j = 0;j < 8;j++)
{
char buf[40];
sprintf(buf,"%01x",wiping_soundregs[0x2000+i*8+j]>>4);
ui_draw_text(buf,j*10,80+i*8);
}
}
}
#endif
return 0;
}