diff options
Diffstat (limited to 'src/mame/video')
-rw-r--r-- | src/mame/video/bionicc.c | 38 | ||||
-rw-r--r-- | src/mame/video/tigeroad.c | 43 | ||||
-rw-r--r-- | src/mame/video/tigeroad_spr.c | 94 | ||||
-rw-r--r-- | src/mame/video/tigeroad_spr.h | 16 |
4 files changed, 113 insertions, 78 deletions
diff --git a/src/mame/video/bionicc.c b/src/mame/video/bionicc.c index 0a395608f37..1765b418f34 100644 --- a/src/mame/video/bionicc.c +++ b/src/mame/video/bionicc.c @@ -185,43 +185,7 @@ WRITE16_MEMBER(bionicc_state::bionicc_gfxctrl_w) ***************************************************************************/ -void bionicc_state::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect ) -{ - UINT16 *buffered_spriteram = m_spriteram->buffer(); - int offs; - gfx_element *gfx = m_gfxdecode->gfx(3); - for (offs = (m_spriteram->bytes() - 8) / 2; offs >= 0; offs -= 4) - { - int tile_number = buffered_spriteram[offs] & 0x7ff; - if( tile_number != 0x7ff ) - { - int attr = buffered_spriteram[offs + 1]; - int color = (attr & 0x3c) >> 2; - int flipx = attr & 0x02; - int flipy = 0; - int sx = (INT16)buffered_spriteram[offs + 3]; /* signed */ - int sy = (INT16)buffered_spriteram[offs + 2]; /* signed */ - - if (sy > 512 - 16) - sy -= 512; - - if (flip_screen()) - { - sx = 240 - sx; - sy = 240 - sy; - flipx = !flipx; - flipy = !flipy; - } - - gfx->transpen(bitmap,cliprect, - tile_number, - color, - flipx,flipy, - sx,sy,15); - } - } -} UINT32 bionicc_state::screen_update_bionicc(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { @@ -229,7 +193,7 @@ UINT32 bionicc_state::screen_update_bionicc(screen_device &screen, bitmap_ind16 m_fg_tilemap->draw(screen, bitmap, cliprect, 1 | TILEMAP_DRAW_LAYER1, 0); /* nothing in FRONT */ m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0); m_fg_tilemap->draw(screen, bitmap, cliprect, 0 | TILEMAP_DRAW_LAYER1, 0); - draw_sprites(bitmap, cliprect); + m_spritegen->draw_sprites(bitmap, cliprect, m_gfxdecode, 3, m_spriteram->buffer(), m_spriteram->bytes(), flip_screen(), 0 ); m_fg_tilemap->draw(screen, bitmap, cliprect, 0 | TILEMAP_DRAW_LAYER0, 0); m_tx_tilemap->draw(screen, bitmap, cliprect, 0, 0); return 0; diff --git a/src/mame/video/tigeroad.c b/src/mame/video/tigeroad.c index d1ae43b4629..76c7d5d6e9b 100644 --- a/src/mame/video/tigeroad.c +++ b/src/mame/video/tigeroad.c @@ -66,46 +66,7 @@ WRITE16_MEMBER(tigeroad_state::tigeroad_scroll_w) } } -void tigeroad_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect, int priority ) -{ - UINT16 *source = &m_spriteram->buffer()[m_spriteram->bytes()/2] - 4; - UINT16 *finish = m_spriteram->buffer(); - while (source >= finish) - { - int tile_number = source[0]; - - if (tile_number != 0xfff) { - int attr = source[1]; - int sy = source[2] & 0x1ff; - int sx = source[3] & 0x1ff; - - int flipx = attr & 0x02; - int flipy = attr & 0x01; - int color = (attr >> 2) & 0x0f; - - if (sx > 0x100) sx -= 0x200; - if (sy > 0x100) sy -= 0x200; - - if (flip_screen()) - { - sx = 240 - sx; - sy = 240 - sy; - flipx = !flipx; - flipy = !flipy; - } - - - m_gfxdecode->gfx(2)->transpen(bitmap,cliprect, - tile_number, - color, - flipx, flipy, - sx, 240 - sy, 15); - } - - source -= 4; - } -} TILE_GET_INFO_MEMBER(tigeroad_state::get_bg_tile_info) { @@ -156,9 +117,9 @@ void tigeroad_state::video_start() UINT32 tigeroad_state::screen_update_tigeroad(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1, 0); - draw_sprites(bitmap, cliprect, 0); + m_spritegen->draw_sprites(bitmap, cliprect, m_gfxdecode, 2, m_spriteram->buffer(), m_spriteram->bytes(), flip_screen(), 1 ); m_bg_tilemap->draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0, 1); - //draw_sprites(bitmap, cliprect, 1); draw priority sprites? m_fg_tilemap->draw(screen, bitmap, cliprect, 0, 2); return 0; } + diff --git a/src/mame/video/tigeroad_spr.c b/src/mame/video/tigeroad_spr.c new file mode 100644 index 00000000000..a180f8ba56a --- /dev/null +++ b/src/mame/video/tigeroad_spr.c @@ -0,0 +1,94 @@ +/* + + very simple sprite scheme, used by some Capcom games and hardware cloned from them + + bionicc.c + tigeroad.c + supduck.c + + it is unknown if this is handled by a custom chip, or simple logic. + y positions are inverted in Bionic Commando, but it seems otherwise the same as + Tiger Road + +*/ + + +#include "emu.h" +#include "tigeroad_spr.h" + + +const device_type TIGEROAD_SPRITE = &device_creator<tigeroad_spr_device>; + +tigeroad_spr_device::tigeroad_spr_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, TIGEROAD_SPRITE, "Simple Capcom (Tiger Road) Sprite", tag, owner, clock, "tigeroad_spr", __FILE__) +{ +} + + +void tigeroad_spr_device::device_start() +{ +} + + + +void tigeroad_spr_device::device_reset() +{ +} + +/* + 4 words per sprite + + 0 ---- ---t tttt tttt = tile number + + 1 ---- ---- --cc cc-- = colour + 1 ---- ---- ---- --x- = flip x + 1 ---- ---- ---- ---y = flip y + + 2 ---- ---x xxxx xxxx = x pos (signed) + + 3 ---- ---y yyyy yyyy = y pos (signed) + +*/ + + +void tigeroad_spr_device::draw_sprites( bitmap_ind16 &bitmap, const rectangle &cliprect, gfxdecode_device *gfxdecode, int region, UINT16* ram, UINT32 size, int flip_screen, int rev_y ) +{ + UINT16 *source = &ram[size/2] - 4; + UINT16 *finish = ram; + + while (source >= finish) + { + int tile_number = source[0]; + + int attr = source[1]; + int sy = source[2] & 0x1ff; + int sx = source[3] & 0x1ff; + + int flipx = attr & 0x02; + int flipy = attr & 0x01; + int color = (attr >> 2) & 0x0f; + + if (sx > 0x100) sx -= 0x200; + if (sy > 0x100) sy -= 0x200; + + if (flip_screen) + { + sx = 240 - sx; + sy = 240 - sy; + flipx = !flipx; + flipy = !flipy; + } + + if (rev_y) + sy = 240 - sy; + + + gfxdecode->gfx(region)->transpen(bitmap,cliprect, + tile_number, + color, + flipx, flipy, + sx, sy, 15); + + source -= 4; + } +} diff --git a/src/mame/video/tigeroad_spr.h b/src/mame/video/tigeroad_spr.h new file mode 100644 index 00000000000..80aec88b667 --- /dev/null +++ b/src/mame/video/tigeroad_spr.h @@ -0,0 +1,16 @@ + +class tigeroad_spr_device : public device_t +{ +public: + tigeroad_spr_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + void draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect, gfxdecode_device *gfxdecode, int region, UINT16* ram, UINT32 size, int flip_screen, int rev_y); + +protected: + + virtual void device_start(); + virtual void device_reset(); +private: +}; + +extern const device_type TIGEROAD_SPRITE; |