#include "emu.h" #include "video/konicdev.h" #include "includes/crimfght.h" /*************************************************************************** Callbacks for the K052109 ***************************************************************************/ void crimfght_tile_callback( running_machine &machine, int layer, int bank, int *code, int *color, int *flags, int *priority ) { crimfght_state *state = machine.driver_data(); *flags = (*color & 0x20) ? TILE_FLIPX : 0; *code |= ((*color & 0x1f) << 8) | (bank << 13); *color = state->m_layer_colorbase[layer] + ((*color & 0xc0) >> 6); } /*************************************************************************** Callbacks for the K051960 ***************************************************************************/ void crimfght_sprite_callback( running_machine &machine, int *code, int *color, int *priority, int *shadow ) { /* Weird priority scheme. Why use three bits when two would suffice? */ /* The PROM allows for mixed priorities, where sprites would have */ /* priority over text but not on one or both of the other two planes. */ /* Luckily, this isn't used by the game. */ crimfght_state *state = machine.driver_data(); switch (*color & 0x70) { case 0x10: *priority = 0; break; case 0x00: *priority = 1; break; case 0x40: *priority = 2; break; case 0x20: *priority = 3; break; /* 0x60 == 0x20 */ /* 0x50 priority over F and A, but not over B */ /* 0x30 priority over F, but not over A and B */ /* 0x70 == 0x30 */ } /* bit 7 is on in the "Game Over" sprites, meaning unknown */ /* in Aliens it is the top bit of the code, but that's not needed here */ *color = state->m_sprite_colorbase + (*color & 0x0f); } /*************************************************************************** Start the video hardware emulation. ***************************************************************************/ VIDEO_START( crimfght ) { crimfght_state *state = machine.driver_data(); machine.generic.paletteram.u8 = auto_alloc_array(machine, UINT8, 0x400); state->m_layer_colorbase[0] = 0; state->m_layer_colorbase[1] = 4; state->m_layer_colorbase[2] = 8; state->m_sprite_colorbase = 16; state_save_register_global_pointer(machine, machine.generic.paletteram.u8, 0x400); } /*************************************************************************** Display refresh ***************************************************************************/ SCREEN_UPDATE( crimfght ) { crimfght_state *state = screen->machine().driver_data(); k052109_tilemap_update(state->m_k052109); k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 1, TILEMAP_DRAW_OPAQUE, 0); k051960_sprites_draw(state->m_k051960, bitmap, cliprect, 2, 2); k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 2, 0, 0); k051960_sprites_draw(state->m_k051960, bitmap, cliprect, 1, 1); k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 0, 0, 0); k051960_sprites_draw(state->m_k051960, bitmap, cliprect, 0, 0); return 0; }