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02009: frogger and clones: background doesn't rotate in cocktail mode

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* also fixes that the frog disappears for player 2 if moved backwards. This will 
  position him on x=242. 
  All games in this driver now have the sprites in cocktail/player 2 now offset by 2
This commit is contained in:
Couriersud 2008-07-15 21:18:53 +00:00
parent 23d963f2ee
commit ed46d4f531
1 changed files with 33 additions and 14 deletions
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47
src/mame/video/galaxian.c
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@ -596,12 +596,13 @@ static void sprites_draw(running_machine *machine, bitmap_t *bitmap, const recta
{
rectangle clip = *cliprect;
int sprnum;
int clip_ofs = (flipscreen_x ? 16 : 0);
/* 16 of the 256 pixels of the sprites are hard-clipped at the line buffer */
/* according to the schematics, it should be the first 16 pixels; however, */
/* some bootlegs demonstrate that this can be shifted to other positions. */
clip.min_x = MAX(clip.min_x, galaxian_sprite_clip_start * GALAXIAN_XSCALE);
clip.max_x = MIN(clip.max_x, (galaxian_sprite_clip_end + 1) * GALAXIAN_XSCALE - 1);
clip.min_x = MAX(clip.min_x, (galaxian_sprite_clip_start - clip_ofs) * GALAXIAN_XSCALE);
clip.max_x = MIN(clip.max_x, (galaxian_sprite_clip_end - clip_ofs + 1) * GALAXIAN_XSCALE - 1);
/* The line buffer is only written if it contains a '0' currently; */
/* it is cleared during the visible area, and populated during HBLANK */
@ -627,7 +628,7 @@ static void sprites_draw(running_machine *machine, bitmap_t *bitmap, const recta
/* apply flipscreen in X direction */
if (flipscreen_x)
{
sx = 240 - sx;
sx = 242 - sx; // + 8 - HOFS
flipx = !flipx;
}
@ -995,17 +996,35 @@ void frogger_draw_background(running_machine *machine, bitmap_t *bitmap, const r
{
rectangle draw;
/* color split point verified on real machine */
/* hmmm, according to schematics it is at 128+8; which is right? */
draw = *cliprect;
draw.max_x = MIN(draw.max_x, (128+8) * GALAXIAN_XSCALE - 1);
if (draw.min_x <= draw.max_x)
fillbitmap(bitmap, MAKE_RGB(0,0,0x47), &draw);
if (flipscreen_x)
{
/* color split point verified on real machine */
/* hmmm, according to schematics it is at 128+8; which is right? */
draw = *cliprect;
draw.max_x = MIN(draw.max_x, (128-8) * GALAXIAN_XSCALE - 1);
if (draw.min_x <= draw.max_x)
fillbitmap(bitmap, RGB_BLACK, &draw);
draw = *cliprect;
draw.min_x = MAX(draw.min_x, (128+8) * GALAXIAN_XSCALE);
if (draw.min_x <= draw.max_x)
fillbitmap(bitmap, RGB_BLACK, &draw);
draw = *cliprect;
draw.min_x = MAX(draw.min_x, (128-8) * GALAXIAN_XSCALE);
if (draw.min_x <= draw.max_x)
fillbitmap(bitmap, MAKE_RGB(0,0,0x47), &draw);
}
else
{
/* color split point verified on real machine */
/* hmmm, according to schematics it is at 128+8; which is right? */
draw = *cliprect;
draw.max_x = MIN(draw.max_x, (128+8) * GALAXIAN_XSCALE - 1);
if (draw.min_x <= draw.max_x)
fillbitmap(bitmap, MAKE_RGB(0,0,0x47), &draw);
draw = *cliprect;
draw.min_x = MAX(draw.min_x, (128+8) * GALAXIAN_XSCALE);
if (draw.min_x <= draw.max_x)
fillbitmap(bitmap, RGB_BLACK, &draw);
}
}