Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-05-12 00:58:53 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

Merge pull request #5160 from cam900/bandit

Browse Source 
decmxc06.cpp : Fix bandit regression, Fix notes, Remove outdated comm…
This commit is contained in:
R. Belmont 2019-06-05 09:31:08 -04:00 committed by GitHub
commit cfc6dd2944
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 48 additions and 39 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
src/mame/video/decmxc06.cpp
View File

@ -4,9 +4,15 @@
Deco MXC06 sprite generator: Deco MXC06 sprite generator:
used by: used by:
madmotor.c madmotor.cpp
dec0.cpp
stadhero.cpp
thedeep.cpp
actfancr.cpp
vaportra.cpp
dec8.cpp
Notes (dec0.c) Notes (dec0.cpp)
Sprite data: The unknown bits seem to be unused. Sprite data: The unknown bits seem to be unused.
@ -29,11 +35,6 @@ Notes (dec0.c)
Bit 4,5,6,7: - Colour Bit 4,5,6,7: - Colour
Byte 5: X-coords Byte 5: X-coords
todo:
Implement sprite/tilemap orthogonality (not strictly needed as no
games make deliberate use of it). (pdrawgfx, or rendering to bitmap for manual mixing)
*/ */
@ -73,8 +74,8 @@ void deco_mxc06_device::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap
int flipx = data0 & 0x2000; int flipx = data0 & 0x2000;
parentFlipY = flipy = data0 & 0x4000; parentFlipY = flipy = data0 & 0x4000;
const u16 h = (1 << ((data0 & 0x1800) >> 11)); /* 1x, 2x, 4x, 8x height */ const int h = (1 << ((data0 & 0x1800) >> 11)); /* 1x, 2x, 4x, 8x height */
const u16 w = (1 << ((data0 & 0x0600) >> 9)); /* 1x, 2x, 4x, 8x width */ int w = (1 << ((data0 & 0x0600) >> 9)); /* 1x, 2x, 4x, 8x width */
int sx = data2 & 0x01ff; int sx = data2 & 0x01ff;
int sy = data0 & 0x01ff; int sy = data0 & 0x01ff;
@ -101,10 +102,13 @@ void deco_mxc06_device::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap
continue; continue;
} }
int chainoffs = priority ? offs - ((w - 1) * 4) : offs; // or bandit breaks
for (int x = 0; x < w; x++) for (int x = 0; x < w; x++)
{
if (chainoffs < size)
{ {
// maybe, birdie try appears to specify the base code for each part.. // maybe, birdie try appears to specify the base code for each part..
u16 code = spriteram[offs + 1] & 0x1fff; u16 code = spriteram[chainoffs + 1] & 0x1fff;
code &= ~(h - 1); code &= ~(h - 1);
@ -139,10 +143,15 @@ void deco_mxc06_device::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap
} }
} }
} }
}
chainoffs += 4;
}
while (w)
{
w--;
offs += inc; offs += inc;
if (offs == end) if (offs == end)
return; return;
} }
} }
} }