// license:BSD-3-Clause // copyright-holders:Bryan McPhail /*************************************************************************** Caveman Ninja Video emulation - Bryan McPhail, mish@tendril.co.uk ****************************************************************************/ #include "emu.h" #include "includes/cninja.h" /******************************************************************************/ VIDEO_START_MEMBER(cninja_state,cninja) { m_deco_tilegen[0]->set_transmask(1, 0, 0x00ff, 0xff01); } VIDEO_START_MEMBER(cninja_state,stoneage) { /* The bootleg has broken scroll registers */ m_deco_tilegen[0]->set_scrolldx(3, 0, -10, -10); /* pf4 16x16 tilemap */ m_deco_tilegen[0]->set_scrolldx(1, 0, -10, -10); /* pf2 16x16 tilemap */ m_deco_tilegen[0]->set_scrolldx(0, 1, 2, 2); /* pf1 8x8 tilemap */ } /******************************************************************************/ /* The bootleg sprites are in a different format! */ void cninja_state::cninjabl_draw_sprites( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect ) { uint16_t *buffered_spriteram = m_spriteram[0]->buffer(); int offs; int endoffs; // bootleg seems to use 0x180 as an end of list marker // find it first, so we can use normal list processing endoffs = 0x400 - 4; for (offs = 0; offs < 0x400 - 4 ; offs += 4) { int y = buffered_spriteram[offs + 1]; if (y == 0x180) { endoffs = offs; offs = 0x400 - 4; } } for (offs = endoffs; offs >=0 ; offs -= 4) { int x, y, sprite, colour, multi, fx, fy, inc, flash, mult, pri = 0; sprite = buffered_spriteram[offs + 0]; // changed on bootleg! y = buffered_spriteram[offs + 1]; // changed on bootleg! if (!sprite) continue; x = buffered_spriteram[offs + 2]; /* Sprite/playfield priority */ switch (x & 0xc000) { case 0x0000: pri = 0; break; case 0x4000: pri = 0xf0; break; case 0x8000: pri = 0xf0 | 0xcc; break; case 0xc000: pri = 0xf0 | 0xcc; break; /* Perhaps 0xf0|0xcc|0xaa (Sprite under bottom layer) */ } flash = y & 0x1000; if (flash && (m_screen->frame_number() & 1)) continue; colour = (x >> 9) & 0x1f; fx = y & 0x2000; fy = y & 0x4000; multi = (1 << ((y & 0x0600) >> 9)) - 1; /* 1x, 2x, 4x, 8x height */ y -= multi * 16; // changed on bootleg! y += 4; x = x & 0x01ff; y = y & 0x01ff; if (x >= 256) x -= 512; if (y >= 256) y -= 512; x = 240 - x; y = 240 - y; //sprite &= ~multi; if (fy) inc = -1; else { sprite += multi; inc = 1; } if (flip_screen()) { y = 240 - y; x = 240 - x; if (fx) fx = 0; else fx = 1; if (fy) fy = 0; else fy = 1; mult = 16; } else mult = -16; while (multi >= 0) { m_gfxdecode->gfx(3)->prio_transpen(bitmap,cliprect, sprite - multi * inc, colour, fx,fy, x,y + mult * multi, screen.priority(),pri,0); multi--; } } } /******************************************************************************/ uint32_t cninja_state::screen_update_cninja(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { uint16_t flip = m_deco_tilegen[0]->pf_control_r(0); flip_screen_set(BIT(flip, 7)); m_sprgen[0]->set_flip_screen(BIT(flip, 7)); m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0], m_pf_rowscroll[1]); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2], m_pf_rowscroll[3]); /* Draw playfields */ screen.priority().fill(0, cliprect); bitmap.fill(512, cliprect); m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 1); m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1, 2); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0, 4); m_sprgen[0]->draw_sprites(bitmap, cliprect, m_spriteram[0]->buffer(), 0x400); m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 0); return 0; } uint32_t cninja_state::screen_update_cninjabl2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { /* force layers to be enabled */ m_deco_tilegen[0]->set_enable(0, 1 ); m_deco_tilegen[0]->set_enable(1, 1 ); screen_update_cninja(screen, bitmap, cliprect); return 0; } uint32_t cninja_state::screen_update_cninjabl(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { uint16_t flip = m_deco_tilegen[0]->pf_control_r(0); /* force layers to be enabled */ m_deco_tilegen[1]->set_enable(0, 1 ); m_deco_tilegen[1]->set_enable(1, 1 ); flip_screen_set(BIT(flip, 7)); m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0], m_pf_rowscroll[1]); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2], m_pf_rowscroll[3]); /* Draw playfields */ screen.priority().fill(0, cliprect); bitmap.fill(512, cliprect); m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 1); m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER1, 2); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_LAYER0, 4); cninjabl_draw_sprites(screen, bitmap, cliprect); m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 0); return 0; } uint32_t cninja_state::screen_update_edrandy(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { uint16_t flip = m_deco_tilegen[0]->pf_control_r(0); flip_screen_set(BIT(flip, 7)); m_sprgen[0]->set_flip_screen(BIT(flip, 7)); m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0], m_pf_rowscroll[1]); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2], m_pf_rowscroll[3]); screen.priority().fill(0, cliprect); bitmap.fill(0, cliprect); m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 1); m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, 0, 4); m_sprgen[0]->draw_sprites(bitmap, cliprect, m_spriteram[0]->buffer(), 0x400); m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 0); return 0; } uint32_t cninja_state::screen_update_robocop2(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { uint16_t flip = m_deco_tilegen[0]->pf_control_r(0); uint16_t priority = m_priority; /* One of the tilemap chips can switch between 2 tilemaps at 4bpp, or 1 at 8bpp */ if (priority & 4) { m_deco_tilegen[1]->set_tilemap_colour_mask(0, 0); m_deco_tilegen[1]->set_tilemap_colour_mask(1, 0); m_deco_tilegen[1]->pf12_set_gfxbank(0, 4); } else { m_deco_tilegen[1]->set_tilemap_colour_mask(0, 0xf); m_deco_tilegen[1]->set_tilemap_colour_mask(1, 0xf); m_deco_tilegen[1]->pf12_set_gfxbank(0, 2); } /* Update playfields */ flip_screen_set(BIT(flip, 7)); m_sprgen[0]->set_flip_screen(BIT(flip, 7)); m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0], m_pf_rowscroll[1]); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2], m_pf_rowscroll[3]); /* Draw playfields */ screen.priority().fill(0, cliprect); bitmap.fill(0x200, cliprect); if ((priority & 4) == 0) m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 1); /* Switchable priority */ switch (priority & 0x8) { case 8: m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 4); break; default: case 0: m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, 0, 4); break; } m_sprgen[0]->draw_sprites(bitmap, cliprect, m_spriteram[0]->buffer(), 0x400); m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 0); return 0; } VIDEO_START_MEMBER(cninja_state,mutantf) { m_sprgen[0]->alloc_sprite_bitmap(); m_sprgen[1]->alloc_sprite_bitmap(); } uint32_t cninja_state::screen_update_mutantf(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { uint16_t flip = m_deco_tilegen[0]->pf_control_r(0); uint16_t priority = m_priority; // sprites are flipped relative to tilemaps flip_screen_set(BIT(flip, 7)); m_sprgen[0]->set_flip_screen(!BIT(flip, 7)); m_sprgen[1]->set_flip_screen(!BIT(flip, 7)); m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0], m_pf_rowscroll[1]); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2], m_pf_rowscroll[3]); /* Draw playfields */ bitmap.fill(0x400, cliprect); /* Confirmed */ m_sprgen[0]->set_alt_format(true); m_sprgen[1]->set_alt_format(true); m_sprgen[1]->draw_sprites(bitmap, cliprect, m_spriteram[1]->buffer(), 0x400); m_sprgen[0]->draw_sprites(bitmap, cliprect, m_spriteram[0]->buffer(), 0x400); /* There is no priority prom on this board, but there is a priority control word, the only values used in game appear to be 2, 6 & 7 though: Bit 0: If set sprite chip 2 above sprite chip 1 else vice versa Bit 1: Always set? Bit 2: Almost always set (Sometimes not set on screen transitions) The other bits may control alpha blend on the 2nd sprite chip, or layer order. */ m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, 0, 0); m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 0); if (priority & 1) { m_sprgen[0]->inefficient_copy_sprite_bitmap(bitmap, cliprect, 0x0000, 0x0000, 0x100, 0x1ff); m_sprgen[1]->inefficient_copy_sprite_bitmap(bitmap, cliprect, 0x0000, 0x0000, 1024+768, 0x0ff, 0x80); // fixed alpha of 0x80 for this layer? } else { m_sprgen[1]->inefficient_copy_sprite_bitmap(bitmap, cliprect, 0x0000, 0x0000, 1024+768, 0x0ff, 0x80); // fixed alpha of 0x80 for this layer? m_sprgen[0]->inefficient_copy_sprite_bitmap(bitmap, cliprect, 0x0000, 0x0000, 0x100, 0x1ff); } m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 0); return 0; }