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Wrap-around fix from Haze for ZT, nw

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This commit is contained in:
Angelo Salese 2012-09-11 23:32:50 +00:00
parent 784717afbf
commit d901fed61a
2 changed files with 36 additions and 5 deletions
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39
src/mame/drivers/raiden2.c
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@ -680,9 +680,6 @@ void raiden2_state::draw_sprites(running_machine &machine, bitmap_ind16 &bitmap,
int xflip, yflip;
int xstep, ystep;
if (sx & 0x8000) sx -= 0x10000;
if (sy & 0x8000) sy -= 0x10000;
ytlim = (source[0] >> 12) & 0x7;
xtlim = (source[0] >> 8) & 0x7;
@ -714,6 +711,12 @@ void raiden2_state::draw_sprites(running_machine &machine, bitmap_ind16 &bitmap,
{
for (ytiles = 0; ytiles < ytlim; ytiles++)
{
/* note this wraparound handling could be wrong if some of the COP maths is wrong */
#define ZEROTEAM_MASK_X (0x1ff) // causes a blank square in the corner of zero team, but otherwise the thrusters of the ship in the r2 intro are clipped, using 0x8000 as a sign bit instead of this logic works for r2, but not zero team
#define ZEROTEAM_MASK_Y (0x1ff)
drawgfx_transpen(
bitmap,
cliprect,
@ -721,7 +724,35 @@ void raiden2_state::draw_sprites(running_machine &machine, bitmap_ind16 &bitmap,
tile_number,
colr,
yflip,xflip,
sx+xstep*xtiles,sy+ystep*ytiles,15);
(sx+xstep*xtiles)&ZEROTEAM_MASK_X,(sy+ystep*ytiles)&ZEROTEAM_MASK_Y,15);
drawgfx_transpen(
bitmap,
cliprect,
gfx,
tile_number,
colr,
yflip,xflip,
((sx+xstep*xtiles)&ZEROTEAM_MASK_X)-0x200,(sy+ystep*ytiles)&ZEROTEAM_MASK_Y,15);
drawgfx_transpen(
bitmap,
cliprect,
gfx,
tile_number,
colr,
yflip,xflip,
(sx+xstep*xtiles)&ZEROTEAM_MASK_X,((sy+ystep*ytiles)&ZEROTEAM_MASK_Y)-0x200,15);
drawgfx_transpen(
bitmap,
cliprect,
gfx,
tile_number,
colr,
yflip,xflip,
((sx+xstep*xtiles)&ZEROTEAM_MASK_X)-0x200,((sy+ystep*ytiles)&ZEROTEAM_MASK_Y)-0x200,15);
tile_number++;
}