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Add one of the system24 special linescroll modes.

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Fix 02526: mahmajn2: Missing 'special' linescroll mode. 
[Olivier Galibert]
This commit is contained in:
Phil Bennett 2009-02-28 14:22:37 +00:00
parent b58915f149
commit 4fcae8c0dd
1 changed files with 90 additions and 51 deletions
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141
src/mame/video/segaic24.c
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@ -428,62 +428,97 @@ void sys24_tile_draw(running_machine *machine, bitmap_t *bitmap, const rectangle
return; return;
if(ctrl & 0x6000) { if(ctrl & 0x6000) {
UINT16 v;
// Special window/scroll modes // Special window/scroll modes
if(layer & 1) if(layer & 1)
return; return;
tilemap_set_scrolly(sys24_tile_layer[layer], 0, +(vscr & 0x1ff)); v = vscr & 0x1ff;
tilemap_set_scrolly(sys24_tile_layer[layer|1], 0, +(vscr & 0x1ff));
tilemap_set_scrolly(sys24_tile_layer[layer], 0, v);
tilemap_set_scrolly(sys24_tile_layer[layer|1], 0, v);
if(hscr & 0x8000) { if(hscr & 0x8000) {
//#ifdef MAME_DEBUG UINT16 *hscrtb = sys24_tile_ram + 0x4000 + 0x200*layer;
popmessage("Linescroll with special mode %04x", ctrl);
// return; switch((ctrl & 0x6000) >> 13) {
//#endif case 1: {
popmessage("Linescroll subtype 1");
break;
}
case 2: case 3: {
int y;
for(y=0; y<384; y++) {
if(y >= cliprect->min_y && y <= cliprect->max_y) {
UINT16 h;
rectangle c1 = *cliprect;
rectangle c2 = *cliprect;
int l1 = layer;
// Whether it's tilemap-relative or screen-relative is unknown
hscr = hscrtb[v];
h = hscr & 0x1ff;
tilemap_set_scrollx(sys24_tile_layer[layer], 0, -h);
tilemap_set_scrollx(sys24_tile_layer[layer|1], 0, -h);
if(c1.max_x >= h)
c1.max_x = h-1;
if(c2.min_x < h)
c2.min_x = h;
if(!(hscr & 0x200))
l1 ^= 1;
c1.min_y = c1.max_y = c2.min_y = c2.max_y = y;
tilemap_draw(bitmap, &c1, sys24_tile_layer[l1], tpri, lpri);
tilemap_draw(bitmap, &c2, sys24_tile_layer[l1^1], tpri, lpri);
}
v = (v + 1) & 0x1ff;
}
break;
}
}
} else { } else {
tilemap_set_scrollx(sys24_tile_layer[layer], 0, -(hscr & 0x1ff)); tilemap_set_scrollx(sys24_tile_layer[layer], 0, -(hscr & 0x1ff));
tilemap_set_scrollx(sys24_tile_layer[layer|1], 0, -(hscr & 0x1ff)); tilemap_set_scrollx(sys24_tile_layer[layer|1], 0, -(hscr & 0x1ff));
}
switch((ctrl & 0x6000) >> 13) { switch((ctrl & 0x6000) >> 13) {
case 1: { case 1: {
rectangle c1 = *cliprect; rectangle c1 = *cliprect;
rectangle c2 = *cliprect; rectangle c2 = *cliprect;
UINT16 v; UINT16 v;
v = (-vscr) & 0x1ff; v = (-vscr) & 0x1ff;
if(c1.max_y >= v) if(c1.max_y >= v)
c1.max_y = v-1; c1.max_y = v-1;
if(c2.min_y < v) if(c2.min_y < v)
c2.min_y = v; c2.min_y = v;
if(!((-vscr) & 0x200)) if(!((-vscr) & 0x200))
layer ^= 1; layer ^= 1;
tilemap_draw(bitmap, &c1, sys24_tile_layer[layer], tpri, lpri); tilemap_draw(bitmap, &c1, sys24_tile_layer[layer], tpri, lpri);
tilemap_draw(bitmap, &c2, sys24_tile_layer[layer^1], tpri, lpri); tilemap_draw(bitmap, &c2, sys24_tile_layer[layer^1], tpri, lpri);
break; break;
}
case 2: case 3: {
rectangle c1 = *cliprect;
rectangle c2 = *cliprect;
UINT16 h;
h = (+hscr) & 0x1ff;
if(c1.max_x >= h)
c1.max_x = h-1;
if(c2.min_x < h)
c2.min_x = h;
if(!((+hscr) & 0x200))
layer ^= 1;
tilemap_draw(bitmap, &c1, sys24_tile_layer[layer], tpri, lpri);
tilemap_draw(bitmap, &c2, sys24_tile_layer[layer^1], tpri, lpri);
break;
}
}
} }
case 2: {
rectangle c1 = *cliprect;
rectangle c2 = *cliprect;
UINT16 h;
h = (+hscr) & 0x1ff;
if(c1.max_x >= h)
c1.max_x = h-1;
if(c2.min_x < h)
c2.min_x = h;
if(!((+hscr) & 0x200))
layer ^= 1;
tilemap_draw(bitmap, &c1, sys24_tile_layer[layer], tpri, lpri);
tilemap_draw(bitmap, &c2, sys24_tile_layer[layer^1], tpri, lpri);
break;
}
case 3:
//#ifdef MAME_DEBUG
popmessage("Mode 3, please scream");
//#endif
break;
};
} else { } else {
bitmap_t *bm, *tm; bitmap_t *bm, *tm;
@ -612,19 +647,23 @@ void sys24_sprite_vh_start(running_machine *machine)
/* System24 sprites /* System24 sprites
Normal sprite: Normal sprite:
0 00Znnnnn nnnnnnnn zoom mode (1 = separate x and y), next sprite 0 00Z--nnn nnnnnnnn zoom mode (1 = separate x and y), next sprite
1 xxxxxxxx yyyyyyyy zoom x, zoom y (zoom y is used for both when mode = 0) 1 xxxxxxxx yyyyyyyy zoom x, zoom y (zoom y is used for both when mode = 0)
2 --TTTTTT TTTTTTTT sprite number 2 --TTTTTT TTTTTTTT sprite number
3 -CCCCCCC CCCCCCCC indirect palette base 3 PPPPCCCC CCCCCCCC priority, indirect palette base
4 FSSSYYYY YYYYYYYY flipy, y size, top 4 FSSSYYYY YYYYYYYY flipy, y size, top
5 FSSSXXXX XXXXXXXX flipx, x size, left 5 FSSSXXXX XXXXXXXX flipx, x size, left
Clip? Clip?
0 01-nnnnn nnnnnnnn next sprite 0 01---nnn nnnnnnnn next sprite
1 ???????? ???????? 1 hVH----- -------- hide/vflip/hflip
2 -------y yyyyyyyy Clip top
2 -------x xxxxxxxx Clip left
2 -------y yyyyyyyy Clip bottom
2 -------x xxxxxxxx Clip right
Skipped entry Skipped entry
0 10-nnnnn nnnnnnnn next sprite 0 10---nnn nnnnnnnn next sprite
End of sprite list End of sprite list
0 11------ -------- 0 11------ --------
@ -654,7 +693,7 @@ void sys24_sprite_draw(bitmap_t *bitmap, const rectangle *cliprect, const int *s
curspr = source[0]; curspr = source[0];
type = curspr & 0xc000; type = curspr & 0xc000;
curspr &= 0x1fff; curspr &= 0x03ff;
if(type == 0xc000) if(type == 0xc000)
break; break;