/*************************************************************************** Crude Buster Video emulation - Bryan McPhail, mish@tendril.co.uk ***************************************************************************/ #include "emu.h" #include "includes/cbuster.h" #include "video/deco16ic.h" #include "video/decospr.h" /******************************************************************************/ /* maybe the game should just use generic palette handling, and have a darker palette by design... */ static void update_24bitcol( running_machine &machine, int offset ) { UINT8 r, g, b; /* The highest palette value seems to be 0x8e */ r = (UINT8)((float)((machine.generic.paletteram.u16[offset] >> 0) & 0xff) * 1.75); g = (UINT8)((float)((machine.generic.paletteram.u16[offset] >> 8) & 0xff) * 1.75); b = (UINT8)((float)((machine.generic.paletteram2.u16[offset] >> 0) & 0xff) * 1.75); palette_set_color(machine, offset, MAKE_RGB(r, g, b)); } WRITE16_HANDLER( twocrude_palette_24bit_rg_w ) { COMBINE_DATA(&space->machine().generic.paletteram.u16[offset]); update_24bitcol(space->machine(), offset); } WRITE16_HANDLER( twocrude_palette_24bit_b_w ) { COMBINE_DATA(&space->machine().generic.paletteram2.u16[offset]); update_24bitcol(space->machine(), offset); } /******************************************************************************/ /******************************************************************************/ VIDEO_START( twocrude ) { machine.device("spritegen")->alloc_sprite_bitmap(machine); } SCREEN_UPDATE( twocrude ) { cbuster_state *state = screen->machine().driver_data(); UINT16 flip = deco16ic_pf_control_r(state->m_deco_tilegen1, 0, 0xffff); flip_screen_set(screen->machine(), !BIT(flip, 7)); screen->machine().device("spritegen")->draw_sprites(screen->machine(), bitmap, cliprect, state->m_spriteram16_buffer, 0x400); deco16ic_pf_update(state->m_deco_tilegen1, state->m_pf1_rowscroll, state->m_pf2_rowscroll); deco16ic_pf_update(state->m_deco_tilegen2, state->m_pf3_rowscroll, state->m_pf4_rowscroll); /* Draw playfields & sprites */ deco16ic_tilemap_2_draw(state->m_deco_tilegen2, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0); screen->machine().device("spritegen")->inefficient_copy_sprite_bitmap(screen->machine(), bitmap, cliprect, 0x0800, 0x0900, 0x100, 0x0ff); screen->machine().device("spritegen")->inefficient_copy_sprite_bitmap(screen->machine(), bitmap, cliprect, 0x0900, 0x0900, 0x500, 0x0ff); if (state->m_pri) { deco16ic_tilemap_2_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0); deco16ic_tilemap_1_draw(state->m_deco_tilegen2, bitmap, cliprect, 0, 0); } else { deco16ic_tilemap_1_draw(state->m_deco_tilegen2, bitmap, cliprect, 0, 0); deco16ic_tilemap_2_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0); } screen->machine().device("spritegen")->inefficient_copy_sprite_bitmap(screen->machine(), bitmap, cliprect, 0x0000, 0x0900, 0x100, 0x0ff); screen->machine().device("spritegen")->inefficient_copy_sprite_bitmap(screen->machine(), bitmap, cliprect, 0x0100, 0x0900, 0x500, 0x0ff); deco16ic_tilemap_1_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0); return 0; }