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AmigActive 10
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AACD 10.iso
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AACD
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MAME
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vidhrdw
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wiping.c
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C/C++ Source or Header
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2000-04-04
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5KB
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228 lines
/***************************************************************************
vidhrdw.c
Functions to emulate the video hardware of the machine.
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
static int flipscreen;
/***************************************************************************
Convert the color PROMs into a more useable format.
***************************************************************************/
void wiping_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom)
{
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;
/* red component */
bit0 = (*color_prom >> 0) & 0x01;
bit1 = (*color_prom >> 1) & 0x01;
bit2 = (*color_prom >> 2) & 0x01;
*(palette++) = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* green component */
bit0 = (*color_prom >> 3) & 0x01;
bit1 = (*color_prom >> 4) & 0x01;
bit2 = (*color_prom >> 5) & 0x01;
*(palette++) = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
/* blue component */
bit0 = 0;
bit1 = (*color_prom >> 6) & 0x01;
bit2 = (*color_prom >> 7) & 0x01;
*(palette++) = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
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;
}
WRITE_HANDLER( wiping_flipscreen_w )
{
if (flipscreen != (data & 1))
{
flipscreen = (data & 1);
memset(dirtybuffer,1,videoram_size);
}
}
/***************************************************************************
Draw the game screen in the given osd_bitmap.
Do NOT call osd_update_display() from this function, it will be called by
the main emulation engine.
***************************************************************************/
void wiping_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
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->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
copybitmap(bitmap,tmpbitmap,0,0,0,0,&Machine->drv->visible_area,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->drv->visible_area,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->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
#if 0
{
int i,j;
extern unsigned char *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_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_text(buf,j*10,80+i*8);
}
}
}
#endif
}