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eu3a14 - identify more bits

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This commit is contained in:
DavidHaywood 2019-06-04 19:27:34 +01:00
parent a9c01535bd
commit 42d57e58ea
1 changed files with 22 additions and 8 deletions
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30
src/mame/drivers/rad_eu3a14.cpp
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@ -178,8 +178,8 @@ private:
void handle_palette(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void handle_palette(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void draw_page(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int which, int xbase, int ybase, int size); void draw_page(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int which, int xbase, int ybase, int size);
void draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
void draw_sprite_line(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int offset, int count, int pal, int flipx, int xpos, int ypos, int gfxno); void draw_sprite_line(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int offset, int count, int pal, int flipx, int flipy, int xpos, int ypos, int gfxno);
void draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); void draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int drawpri);
}; };
@ -430,22 +430,22 @@ void radica_eu3a14_state::draw_background(screen_device &screen, bitmap_ind16 &b
} }
void radica_eu3a14_state::draw_sprite_line(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int offset, int count, int pal, int flipx, int xpos, int ypos, int gfxno) void radica_eu3a14_state::draw_sprite_line(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int offset, int count, int pal, int flipx, int flipy, int xpos, int ypos, int gfxno)
{ {
int tileno = offset + count; int tileno = offset + count;
gfx_element *gfx = m_gfxdecode->gfx(gfxno); gfx_element *gfx = m_gfxdecode->gfx(gfxno);
gfx->transpen(bitmap, cliprect, tileno, pal, flipx, 0, xpos, ypos, 0); gfx->transpen(bitmap, cliprect, tileno, pal, flipx, flipy, xpos, ypos, 0);
} }
void radica_eu3a14_state::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) void radica_eu3a14_state::draw_sprites(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect, int drawpri)
{ {
// first 4 sprite entries seem to be garbage sprites, so we start at 0x20 // first 4 sprite entries seem to be garbage sprites, so we start at 0x20
// likely we're just interpreting them wrong and they're used for blanking things or clipping? // likely we're just interpreting them wrong and they're used for blanking things or clipping?
for (int i = m_spriterambase; i < m_spriterambase + 0x7e0; i += 8) for (int i = m_spriterambase; i < m_spriterambase + 0x7e0; i += 8)
{ {
/* /*
+0 e--f hhww flip, enable, height, width +0 e-ff hhww flip yx, enable, height, width
+1 yyyy yyyy ypos +1 yyyy yyyy ypos
+2 xxxx xxxx xpos +2 xxxx xxxx xpos
+3 pppp ---- palette +3 pppp ---- palette
@ -464,11 +464,17 @@ void radica_eu3a14_state::draw_sprites(screen_device &screen, bitmap_ind16 &bitm
int h = attr & 0x0c; int h = attr & 0x0c;
int w = attr & 0x03; int w = attr & 0x03;
int flipx = (attr & 0x10) >> 4; int flipx = (attr & 0x10) >> 4;
int flipy = (attr & 0x20) >> 5;
int height = 0; int height = 0;
int width = 0; int width = 0;
int pal = attr2 >> 4; int pal = attr2 >> 4;
int pri = attr2 & 0x07;
if (pri != drawpri)
continue;
// no idea // no idea
if (attr2 & 0x08) if (attr2 & 0x08)
pal += 0x10; pal += 0x10;
@ -541,9 +547,13 @@ void radica_eu3a14_state::draw_sprites(screen_device &screen, bitmap_ind16 &bitm
int count = 0; int count = 0;
for (int yy = 0; yy < height; yy++) for (int yy = 0; yy < height; yy++)
{ {
int yoff = flipy ? height-1-yy : yy;
for (int xx = 0; xx < width; xx++) for (int xx = 0; xx < width; xx++)
{ {
draw_sprite_line(screen, bitmap, cliprect, offset, count, pal, flipx, x + xx * 8, y + yy, gfxno); int xoff = flipx ? (((width - 1) * 8) - (xx * 8)) : (xx * 8);
draw_sprite_line(screen, bitmap, cliprect, offset, count, pal, flipx, flipy, x + xoff, y + yoff, gfxno);
count++; count++;
} }
} }
@ -561,7 +571,11 @@ uint32_t radica_eu3a14_state::screen_update(screen_device &screen, bitmap_ind16
handle_palette(screen, bitmap, cliprect); handle_palette(screen, bitmap, cliprect);
draw_background(screen, bitmap, cliprect); draw_background(screen, bitmap, cliprect);
draw_sprites(screen, bitmap, cliprect);
for (int i = 0; i < 8; i++)
{
draw_sprites(screen, bitmap, cliprect, i);
}
return 0; return 0;
} }