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m62.c
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C/C++ Source or Header
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2000-05-04
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1,117 lines
/***************************************************************************
Video Hardware for Irem Games:
Battle Road, Lode Runner, Kid Niki, Spelunker
***************************************************************************/
#include "driver.h"
#include "vidhrdw/generic.h"
static int flipscreen;
static const unsigned char *sprite_height_prom;
static int kidniki_background_bank;
static int irem_background_hscroll;
static int irem_background_vscroll;
static int kidniki_text_vscroll;
static int spelunk2_palbank;
unsigned char *irem_textram;
size_t irem_textram_size;
static const struct rectangle kungfum_spritevisiblearea =
{
16*8, (64-16)*8-1,
10*8, 32*8-1
};
static const struct rectangle kungfum_flipspritevisiblearea =
{
16*8, (64-16)*8-1,
0*8, 22*8-1
};
/***************************************************************************
Convert the color PROMs into a more useable format.
Kung Fu Master has a six 256x4 palette PROMs (one per gun; three for
characters, three for sprites).
I don't know the exact values of the resistors between the RAM and the
RGB output. I assumed these values (the same as Commando)
bit 3 -- 220 ohm resistor -- RED/GREEN/BLUE
-- 470 ohm resistor -- RED/GREEN/BLUE
-- 1 kohm resistor -- RED/GREEN/BLUE
bit 0 -- 2.2kohm resistor -- RED/GREEN/BLUE
***************************************************************************/
void irem_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom)
{
int i;
for (i = 0;i < Machine->drv->total_colors;i++)
{
int bit0,bit1,bit2,bit3;
/* red component */
bit0 = (color_prom[0] >> 0) & 0x01;
bit1 = (color_prom[0] >> 1) & 0x01;
bit2 = (color_prom[0] >> 2) & 0x01;
bit3 = (color_prom[0] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* green component */
bit0 = (color_prom[Machine->drv->total_colors] >> 0) & 0x01;
bit1 = (color_prom[Machine->drv->total_colors] >> 1) & 0x01;
bit2 = (color_prom[Machine->drv->total_colors] >> 2) & 0x01;
bit3 = (color_prom[Machine->drv->total_colors] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* blue component */
bit0 = (color_prom[2*Machine->drv->total_colors] >> 0) & 0x01;
bit1 = (color_prom[2*Machine->drv->total_colors] >> 1) & 0x01;
bit2 = (color_prom[2*Machine->drv->total_colors] >> 2) & 0x01;
bit3 = (color_prom[2*Machine->drv->total_colors] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
color_prom++;
}
color_prom += 2*Machine->drv->total_colors;
/* color_prom now points to the beginning of the sprite height table */
sprite_height_prom = color_prom; /* we'll need this at run time */
}
void battroad_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom)
{
int i;
for (i = 0;i < 512;i++)
{
int bit0,bit1,bit2,bit3;
/* red component */
bit0 = (color_prom[0] >> 0) & 0x01;
bit1 = (color_prom[0] >> 1) & 0x01;
bit2 = (color_prom[0] >> 2) & 0x01;
bit3 = (color_prom[0] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* green component */
bit0 = (color_prom[512] >> 0) & 0x01;
bit1 = (color_prom[512] >> 1) & 0x01;
bit2 = (color_prom[512] >> 2) & 0x01;
bit3 = (color_prom[512] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* blue component */
bit0 = (color_prom[2*512] >> 0) & 0x01;
bit1 = (color_prom[2*512] >> 1) & 0x01;
bit2 = (color_prom[2*512] >> 2) & 0x01;
bit3 = (color_prom[2*512] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
color_prom++;
}
color_prom += 2*512;
/* color_prom now points to the beginning of the character color prom */
for (i = 0;i < 32;i++)
{
int bit0,bit1,bit2;
bit0 = (color_prom[i] >> 0) & 0x01;
bit1 = (color_prom[i] >> 1) & 0x01;
bit2 = (color_prom[i] >> 2) & 0x01;
*(palette++) = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
bit0 = (color_prom[i] >> 3) & 0x01;
bit1 = (color_prom[i] >> 4) & 0x01;
bit2 = (color_prom[i] >> 5) & 0x01;
*(palette++) = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
bit0 = 0;
bit1 = (color_prom[i] >> 6) & 0x01;
bit2 = (color_prom[i] >> 7) & 0x01;
*(palette++) = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
}
color_prom += 32;
/* color_prom now points to the beginning of the sprite height table */
sprite_height_prom = color_prom; /* we'll need this at run time */
}
void spelunk2_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom)
{
int i;
/* chars */
for (i = 0;i < 512;i++)
{
int bit0,bit1,bit2,bit3;
/* red component */
bit0 = (color_prom[0] >> 0) & 0x01;
bit1 = (color_prom[0] >> 1) & 0x01;
bit2 = (color_prom[0] >> 2) & 0x01;
bit3 = (color_prom[0] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* green component */
bit0 = (color_prom[0] >> 4) & 0x01;
bit1 = (color_prom[0] >> 5) & 0x01;
bit2 = (color_prom[0] >> 6) & 0x01;
bit3 = (color_prom[0] >> 7) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* blue component */
bit0 = (color_prom[2*256] >> 0) & 0x01;
bit1 = (color_prom[2*256] >> 1) & 0x01;
bit2 = (color_prom[2*256] >> 2) & 0x01;
bit3 = (color_prom[2*256] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
color_prom++;
}
color_prom += 2*256;
/* sprites */
for (i = 0;i < 256;i++)
{
int bit0,bit1,bit2,bit3;
/* red component */
bit0 = (color_prom[0] >> 0) & 0x01;
bit1 = (color_prom[0] >> 1) & 0x01;
bit2 = (color_prom[0] >> 2) & 0x01;
bit3 = (color_prom[0] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* green component */
bit0 = (color_prom[256] >> 0) & 0x01;
bit1 = (color_prom[256] >> 1) & 0x01;
bit2 = (color_prom[256] >> 2) & 0x01;
bit3 = (color_prom[256] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
/* blue component */
bit0 = (color_prom[2*256] >> 0) & 0x01;
bit1 = (color_prom[2*256] >> 1) & 0x01;
bit2 = (color_prom[2*256] >> 2) & 0x01;
bit3 = (color_prom[2*256] >> 3) & 0x01;
*(palette++) = 0x0e * bit0 + 0x1f * bit1 + 0x43 * bit2 + 0x8f * bit3;
color_prom++;
}
color_prom += 2*256;
/* color_prom now points to the beginning of the sprite height table */
sprite_height_prom = color_prom; /* we'll need this at run time */
}
int ldrun_vh_start(void)
{
irem_background_hscroll = 0;
irem_background_vscroll = 0;
return generic_vh_start();
}
static int irem_vh_start( int width, int height )
{
irem_background_hscroll = 0;
irem_background_vscroll = 0;
if ((dirtybuffer = malloc(videoram_size)) == 0)
return 1;
memset(dirtybuffer,1,videoram_size);
if ((tmpbitmap = osd_create_bitmap(width,height)) == 0)
{
free(dirtybuffer);
return 1;
}
return 0;
}
int kidniki_vh_start(void)
{
return irem_vh_start(512,256);
}
int spelunkr_vh_start(void)
{
return irem_vh_start(512,512);
}
WRITE_HANDLER( irem_flipscreen_w )
{
/* screen flip is handled both by software and hardware */
data ^= ~readinputport(4) & 1;
if (flipscreen != (data & 1))
{
flipscreen = data & 1;
memset(dirtybuffer,1,videoram_size);
}
coin_counter_w(0,data & 2);
coin_counter_w(1,data & 4);
}
WRITE_HANDLER( irem_background_hscroll_w )
{
switch(offset)
{
case 0:
irem_background_hscroll = (irem_background_hscroll&0xff00)|data;
break;
case 1:
irem_background_hscroll = (irem_background_hscroll&0xff)|(data<<8);
break;
}
}
WRITE_HANDLER( kungfum_scroll_low_w )
{
irem_background_hscroll_w(0,data);
}
WRITE_HANDLER( kungfum_scroll_high_w )
{
irem_background_hscroll_w(1,data);
}
WRITE_HANDLER( irem_background_vscroll_w ){
switch( offset ){
case 0:
irem_background_vscroll = (irem_background_vscroll&0xff00)|data;
break;
case 1:
irem_background_vscroll = (irem_background_vscroll&0xff)|(data<<8);
break;
}
}
WRITE_HANDLER( battroad_scroll_w ){
switch( offset ){
case 0:
irem_background_vscroll_w(0, data);
break;
case 1:
irem_background_hscroll_w(1, data);
break;
case 2:
irem_background_hscroll_w(0, data);
break;
}
}
WRITE_HANDLER( ldrun3_vscroll_w )
{
irem_background_vscroll = data;
}
WRITE_HANDLER( ldrun4_hscroll_w )
{
irem_background_hscroll_w(offset ^ 1,data);
}
WRITE_HANDLER( kidniki_text_vscroll_w )
{
switch (offset)
{
case 0:
kidniki_text_vscroll = (kidniki_text_vscroll & 0xff00) | data;
break;
case 1:
kidniki_text_vscroll = (kidniki_text_vscroll & 0xff) | (data << 8);
break;
}
}
WRITE_HANDLER( kidniki_background_bank_w )
{
if (kidniki_background_bank != (data & 1))
{
kidniki_background_bank = data & 1;
memset(dirtybuffer,1,videoram_size);
}
}
WRITE_HANDLER( spelunkr_palbank_w )
{
if (spelunk2_palbank != (data & 0x01))
{
spelunk2_palbank = data & 0x01;
memset(dirtybuffer,1,videoram_size);
}
}
WRITE_HANDLER( spelunk2_gfxport_w )
{
switch( offset )
{
case 0:
irem_background_vscroll_w(0,data);
break;
case 1:
irem_background_hscroll_w(0,data);
break;
case 2:
irem_background_hscroll_w(1,(data&2)>>1);
irem_background_vscroll_w(1,(data&1));
if (spelunk2_palbank != ((data & 0x0c) >> 2))
{
spelunk2_palbank = (data & 0x0c) >> 2;
memset(dirtybuffer,1,videoram_size);
}
break;
}
}
/***************************************************************************
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.
***************************************************************************/
static void draw_sprites(struct osd_bitmap *bitmap,
const struct rectangle *spritevisiblearea,
const struct rectangle *flipspritevisiblearea )
{
int offs;
/* sprites must be drawn in this order to get correct priority */
for (offs = 0;offs < spriteram_size;offs += 8)
{
int i,incr,code,col,flipx,flipy,sx,sy;
code = spriteram[offs+4] + ((spriteram[offs+5] & 0x07) << 8);
col = spriteram[offs+0] & 0x1f;
sx = 256 * (spriteram[offs+7] & 1) + spriteram[offs+6],
sy = 256+128-15 - (256 * (spriteram[offs+3] & 1) + spriteram[offs+2]),
flipx = spriteram[offs+5] & 0x40;
flipy = spriteram[offs+5] & 0x80;
i = sprite_height_prom[(code >> 5) & 0x1f];
if (i == 1) /* double height */
{
code &= ~1;
sy -= 16;
}
else if (i == 2) /* quadruple height */
{
i = 3;
code &= ~3;
sy -= 3*16;
}
if (flipscreen)
{
sx = 496 - sx;
sy = 242 - i*16 - sy; /* sprites are slightly misplaced by the hardware */
flipx = !flipx;
flipy = !flipy;
}
if (flipy)
{
incr = -1;
code += i;
}
else incr = 1;
do
{
drawgfx(bitmap,Machine->gfx[1],
code + i * incr,col,
flipx,flipy,
sx,sy + 16 * i,
flipscreen ? flipspritevisiblearea : spritevisiblearea,TRANSPARENCY_PEN,0);
i--;
} while (i >= 0);
}
}
static void draw_priority_sprites(struct osd_bitmap *bitmap, int prioritylayer)
{
int offs;
/* sprites must be drawn in this order to get correct priority */
for (offs = 0;offs < spriteram_size;offs += 8)
{
int i,incr,code,col,flipx,flipy,sx,sy;
if (!prioritylayer || (prioritylayer && (spriteram[offs] & 0x10)))
{
code = spriteram[offs+4] + ((spriteram[offs+5] & 0x07) << 8);
col = spriteram[offs+0] & 0x0f;
sx = 256 * (spriteram[offs+7] & 1) + spriteram[offs+6],
sy = 256+128-15 - (256 * (spriteram[offs+3] & 1) + spriteram[offs+2]),
flipx = spriteram[offs+5] & 0x40;
flipy = spriteram[offs+5] & 0x80;
i = sprite_height_prom[(code >> 5) & 0x1f];
if (i == 1) /* double height */
{
code &= ~1;
sy -= 16;
}
else if (i == 2) /* quadruple height */
{
i = 3;
code &= ~3;
sy -= 3*16;
}
if (flipscreen)
{
sx = 496 - sx;
sy = 242 - i*16 - sy; /* sprites are slightly misplaced by the hardware */
flipx = !flipx;
flipy = !flipy;
}
if (flipy)
{
incr = -1;
code += i;
}
else incr = 1;
do
{
drawgfx(bitmap,Machine->gfx[1],
code + i * incr,col,
flipx,flipy,
sx,sy + 16 * i,
&Machine->drv->visible_area,TRANSPARENCY_PEN,0);
i--;
} while (i >= 0);
}
}
}
void kungfum_draw_background(struct osd_bitmap *bitmap)
{
int offs,i;
/* for every character in the Video RAM, check if it has been modified */
/* since last time and update it accordingly. */
for (offs = videoram_size/2 - 1;offs >= 0;offs--)
{
if (dirtybuffer[offs] || dirtybuffer[offs+0x800])
{
int sx,sy,flipx,flipy;
dirtybuffer[offs] = dirtybuffer[offs+0x800] = 0;
sx = offs % 64;
sy = offs / 64;
flipx = videoram[offs+0x800] & 0x20;
flipy = 0;
if (flipscreen)
{
sx = 63 - sx;
sy = 31 - sy;
flipx = !flipx;
flipy = !flipy;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + 4 * (videoram[offs+0x800] & 0xc0),
videoram[offs+0x800] & 0x1f,
flipx,flipy,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
/* copy the temporary bitmap to the screen */
{
int scrollx[32];
if (flipscreen)
{
for (i = 31;i > 25;i--)
scrollx[i] = 0;
for (i = 25;i >= 0;i--)
scrollx[i] = irem_background_hscroll;
}
else
{
for (i = 0;i < 6;i++)
scrollx[i] = 0;
for (i = 6;i < 32;i++)
scrollx[i] = -irem_background_hscroll;
}
copyscrollbitmap(bitmap,tmpbitmap,32,scrollx,0,0,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
static void battroad_draw_background(struct osd_bitmap *bitmap, int prioritylayer)
{
int offs;
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if ((dirtybuffer[offs] || dirtybuffer[offs+1]) && !(!prioritylayer && (videoram[offs+1] & 0x04)))
{
int sx,sy;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 64;
sy = (offs/2) / 64;
if (flipscreen)
{
sx = 63 - sx;
sy = 31 - sy;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + ((videoram[offs+1] & 0x40) << 3) + ((videoram[offs + 1] & 0x10) << 4),
videoram[offs+1] & 0x0f,
flipscreen,flipscreen,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
{
int scrollx, scrolly;
if (flipscreen)
{
scrollx = irem_background_hscroll;
scrolly = irem_background_vscroll;
}
else
{
scrollx = -irem_background_hscroll;
scrolly = -irem_background_vscroll;
}
if (prioritylayer)
{
copyscrollbitmap(bitmap,tmpbitmap,1,&scrollx,1,&scrolly,&Machine->drv->visible_area,TRANSPARENCY_PEN,Machine->pens[0]);
}
else
{
copyscrollbitmap(bitmap,tmpbitmap,1,&scrollx,1,&scrolly,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
}
void ldrun_draw_background(struct osd_bitmap *bitmap, int prioritylayer)
{
int offs;
/* for every character in the Video RAM, check if it has been modified */
/* since last time and update it accordingly. */
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if ((dirtybuffer[offs] || dirtybuffer[offs+1]) && !(!prioritylayer && (videoram[offs+1] & 0x04)))
{
int sx,sy,flipx;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 64;
sy = (offs/2) / 64;
flipx = videoram[offs+1] & 0x20;
if (flipscreen)
{
sx = 63 - sx;
sy = 31 - sy;
flipx = !flipx;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + ((videoram[offs+1] & 0xc0) << 2),
videoram[offs+1] & 0x1f,
flipx,flipscreen,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
{
int scrolly; /* ldrun3 only */
if (flipscreen)
scrolly = irem_background_vscroll;
else
scrolly = -irem_background_vscroll;
if (prioritylayer)
{
copyscrollbitmap(bitmap,tmpbitmap,0,0,1,&scrolly,&Machine->drv->visible_area,TRANSPARENCY_PEN,Machine->pens[0]);
}
else
{
copyscrollbitmap(bitmap,tmpbitmap,0,0,1,&scrolly,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
}
/* almost identical but scrolling background, more characters, */
/* no char x flip, and more sprites */
void ldrun4_draw_background(struct osd_bitmap *bitmap)
{
int offs;
/* for every character in the Video RAM, check if it has been modified */
/* since last time and update it accordingly. */
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if (dirtybuffer[offs] || dirtybuffer[offs+1])
{
int sx,sy;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 64;
sy = (offs/2) / 64;
if (flipscreen)
{
sx = 63 - sx;
sy = 31 - sy;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + ((videoram[offs+1] & 0xc0) << 2) + ((videoram[offs+1] & 0x20) << 5),
videoram[offs+1] & 0x1f,
flipscreen,flipscreen,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
{
int scrollx;
if (flipscreen)
scrollx = irem_background_hscroll + 2;
else
scrollx = -irem_background_hscroll + 2;
copyscrollbitmap(bitmap,tmpbitmap,1,&scrollx,0,0,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
void lotlot_draw_background(struct osd_bitmap *bitmap)
{
int offs;
/* for every character in the Video RAM, check if it has been modified */
/* since last time and update it accordingly. */
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if (dirtybuffer[offs] || dirtybuffer[offs+1])
{
int sx,sy,flipx;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 32;
sy = (offs/2) / 32;
flipx = videoram[offs+1] & 0x20;
if (flipscreen)
{
sx = 31 - sx;
sy = 31 - sy;
flipx = !flipx;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + ((videoram[offs+1] & 0xc0) << 2),
videoram[offs+1] & 0x1f,
flipx,flipscreen,
12*sx + 64,10*sy - 32,
0,TRANSPARENCY_NONE,0);
}
}
copybitmap(bitmap,tmpbitmap,0,0,0,0,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
for (offs = irem_textram_size - 2;offs >= 0;offs -= 2)
{
int sx,sy;
sx = (offs/2) % 32;
sy = (offs/2) / 32;
if (flipscreen)
{
sx = 31 - sx;
sy = 31 - sy;
}
drawgfx(bitmap,Machine->gfx[2],
irem_textram[offs] + ((irem_textram[offs + 1] & 0xc0) << 2),
(irem_textram[offs + 1] & 0x1f),
flipscreen,flipscreen,
12*sx + 64,10*sy - 32,
&Machine->drv->visible_area,TRANSPARENCY_PEN, 0);
}
}
static void kidniki_draw_background(struct osd_bitmap *bitmap)
{
int offs;
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if (dirtybuffer[offs] || dirtybuffer[offs+1])
{
int sx,sy;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 64;
sy = (offs/2) / 64;
if (flipscreen)
{
sx = 63 - sx;
sy = 31 - sy;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + ((videoram[offs+1] & 0xe0) << 3) + (kidniki_background_bank << 11),
videoram[offs+1] & 0x1f,
flipscreen,flipscreen,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
{
int scrollx;
if (flipscreen)
scrollx = irem_background_hscroll + 2;
else
scrollx = -irem_background_hscroll + 2;
copyscrollbitmap(bitmap,tmpbitmap,1,&scrollx,0,0,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
static void spelunkr_draw_background(struct osd_bitmap *bitmap)
{
int offs;
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if (dirtybuffer[offs] || dirtybuffer[offs+1])
{
int sx,sy;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 64;
sy = (offs/2) / 64;
if (flipscreen)
{
sx = 63 - sx;
sy = 63 - sy;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs]
+ ((videoram[offs+1] & 0x10) << 4)
+ ((videoram[offs+1] & 0x20) << 6)
+ ((videoram[offs+1] & 0xc0) << 3),
(videoram[offs+1] & 0x0f) + (spelunk2_palbank << 4),
flipscreen,flipscreen,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
{
int scrollx,scrolly;
if (flipscreen)
{
scrollx = irem_background_hscroll;
scrolly = irem_background_vscroll - 128;
}
else
{
scrollx = -irem_background_hscroll;
scrolly = -irem_background_vscroll - 128;
}
copyscrollbitmap(bitmap,tmpbitmap,1,&scrollx,1,&scrolly,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
static void spelunk2_draw_background(struct osd_bitmap *bitmap)
{
int offs;
for (offs = videoram_size-2;offs >= 0;offs -= 2)
{
if (dirtybuffer[offs] || dirtybuffer[offs+1])
{
int sx,sy;
dirtybuffer[offs] = 0;
dirtybuffer[offs+1] = 0;
sx = (offs/2) % 64;
sy = (offs/2) / 64;
if (flipscreen)
{
sx = 63 - sx;
sy = 63 - sy;
}
drawgfx(tmpbitmap,Machine->gfx[0],
videoram[offs] + ((videoram[offs+1] & 0xf0) << 4),
(videoram[offs+1] & 0x0f) + (spelunk2_palbank << 4),
flipscreen,flipscreen,
8*sx,8*sy,
0,TRANSPARENCY_NONE,0);
}
}
{
int scrollx,scrolly;
if (flipscreen)
{
scrollx = irem_background_hscroll;
scrolly = irem_background_vscroll - 128;
}
else
{
scrollx = -irem_background_hscroll;
scrolly = -irem_background_vscroll - 128;
}
copyscrollbitmap(bitmap,tmpbitmap,1,&scrollx,1,&scrolly,&Machine->drv->visible_area,TRANSPARENCY_NONE,0);
}
}
static void battroad_draw_text(struct osd_bitmap *bitmap)
{
int offs;
for (offs = irem_textram_size - 2;offs >= 0;offs -= 2)
{
int sx,sy;
sx = (offs/2) % 32;
sy = (offs/2) / 32;
if (flipscreen)
{
sx = 31 - sx;
sy = 31 - sy;
}
drawgfx(bitmap,Machine->gfx[2],
irem_textram[offs] + ((irem_textram[offs + 1] & 0x40) << 3) + ((irem_textram[offs + 1] & 0x10) << 4),
(irem_textram[offs + 1] & 0x0f),
flipscreen,flipscreen,
8*sx+128,8*sy,
&Machine->drv->visible_area,TRANSPARENCY_PEN, 0);
}
}
static void kidniki_draw_text(struct osd_bitmap *bitmap)
{
int offs;
int scrolly;
if (flipscreen)
scrolly = kidniki_text_vscroll-0x180;
else
scrolly = -kidniki_text_vscroll+0x180;
for (offs = irem_textram_size - 2;offs >= 0;offs -= 2)
{
int sx,sy;
sx = (offs/2) % 32;
sy = (offs/2) / 32;
if (flipscreen)
{
sx = 31 - sx;
sy = 31 - sy;
}
drawgfx(bitmap,Machine->gfx[2],
irem_textram[offs] + ((irem_textram[offs + 1] & 0xc0) << 2),
(irem_textram[offs + 1] & 0x1f),
flipscreen,flipscreen,
12*sx + 64,8*sy + scrolly,
&Machine->drv->visible_area,TRANSPARENCY_PEN, 0);
}
}
static void spelunkr_draw_text(struct osd_bitmap *bitmap)
{
int offs;
for (offs = irem_textram_size - 2;offs >= 0;offs -= 2)
{
int sx,sy;
sx = (offs/2) % 32;
sy = (offs/2) / 32;
if (flipscreen)
{
sx = 31 - sx;
sy = 31 - sy;
}
drawgfx(bitmap,Machine->gfx[2],
irem_textram[offs] + ((irem_textram[offs + 1] & 0x10) << 4),
(irem_textram[offs + 1] & 0x0f) + (spelunk2_palbank << 4),
flipscreen,flipscreen,
12*sx + 64,8*sy,
&Machine->drv->visible_area,TRANSPARENCY_PEN, 0);
}
}
void kungfum_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
kungfum_draw_background(bitmap);
draw_sprites(bitmap, &kungfum_spritevisiblearea, &kungfum_flipspritevisiblearea);
}
void battroad_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
battroad_draw_background(bitmap, 0);
draw_priority_sprites(bitmap, 0);
battroad_draw_background(bitmap, 1);
draw_priority_sprites(bitmap, 1);
battroad_draw_text(bitmap);
}
void ldrun_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
ldrun_draw_background(bitmap, 0);
draw_priority_sprites(bitmap, 0);
ldrun_draw_background(bitmap, 1);
draw_priority_sprites(bitmap, 1);
}
void ldrun4_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
ldrun4_draw_background(bitmap);
draw_sprites(bitmap, &Machine->drv->visible_area, &Machine->drv->visible_area);
}
void lotlot_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
lotlot_draw_background(bitmap);
draw_sprites(bitmap, &Machine->drv->visible_area, &Machine->drv->visible_area);
}
void kidniki_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh)
{
kidniki_draw_background(bitmap);
draw_sprites(bitmap, &Machine->drv->visible_area, &Machine->drv->visible_area);
kidniki_draw_text(bitmap);
}
void spelunkr_vh_screenrefresh( struct osd_bitmap *bitmap, int full_refresh )
{
spelunkr_draw_background(bitmap);
draw_sprites(bitmap, &Machine->drv->visible_area, &Machine->drv->visible_area);
spelunkr_draw_text(bitmap);
}
void spelunk2_vh_screenrefresh( struct osd_bitmap *bitmap, int full_refresh )
{
spelunk2_draw_background(bitmap);
draw_sprites(bitmap, &Machine->drv->visible_area, &Machine->drv->visible_area);
spelunkr_draw_text(bitmap);
}