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/***************************************************************************
video.c
Functions to emulate the video hardware of the machine.
***************************************************************************/
#include "emu.h"
#include "video/konicdev.h"
#include "includes/mainevt.h"
/***************************************************************************
Callbacks for the K052109
***************************************************************************/
void mainevt_tile_callback( running_machine &machine, int layer, int bank, int *code, int *color, int *flags, int *priority )
{
mainevt_state *state = machine.driver_data<mainevt_state>();
*flags = (*color & 0x02) ? TILE_FLIPX : 0;
/* priority relative to HALF priority sprites */
*priority = (layer == 2) ? (*color & 0x20) >> 5 : 0;
*code |= ((*color & 0x01) << 8) | ((*color & 0x1c) << 7);
*color = state->m_layer_colorbase[layer] + ((*color & 0xc0) >> 6);
}
void dv_tile_callback( running_machine &machine, int layer, int bank, int *code, int *color, int *flags, int *priority )
{
mainevt_state *state = machine.driver_data<mainevt_state>();
/* (color & 0x02) is flip y handled internally by the 052109 */
*code |= ((*color & 0x01) << 8) | ((*color & 0x3c) << 7);
*color = state->m_layer_colorbase[layer] + ((*color & 0xc0) >> 6);
}
/***************************************************************************
Callbacks for the K051960
***************************************************************************/
void mainevt_sprite_callback(running_machine &machine, int *code,int *color,int *priority_mask,int *shadow)
{
mainevt_state *state = machine.driver_data<mainevt_state>();
/* bit 5 = priority over layer B (has precedence) */
/* bit 6 = HALF priority over layer B (used for crowd when you get out of the ring) */
if (*color & 0x20)
*priority_mask = 0xff00;
else if (*color & 0x40)
*priority_mask = 0xff00 | 0xf0f0;
else
*priority_mask = 0xff00 | 0xf0f0 | 0xcccc;
/* bit 7 is shadow, not used */
*color = state->m_sprite_colorbase + (*color & 0x03);
}
void dv_sprite_callback(running_machine &machine, int *code,int *color,int *priority,int *shadow)
{
mainevt_state *state = machine.driver_data<mainevt_state>();
/* TODO: the priority/shadow handling (bits 5-7) seems to be quite complex (see PROM) */
*color = state->m_sprite_colorbase + (*color & 0x07);
}
/*****************************************************************************/
VIDEO_START( mainevt )
{
mainevt_state *state = machine.driver_data<mainevt_state>();
state->m_layer_colorbase[0] = 0;
state->m_layer_colorbase[1] = 8;
state->m_layer_colorbase[2] = 4;
state->m_sprite_colorbase = 12;
}
VIDEO_START( dv )
{
mainevt_state *state = machine.driver_data<mainevt_state>();
state->m_layer_colorbase[0] = 0;
state->m_layer_colorbase[1] = 0;
state->m_layer_colorbase[2] = 4;
state->m_sprite_colorbase = 8;
}
/*****************************************************************************/
SCREEN_UPDATE( mainevt )
{
mainevt_state *state = screen->machine().driver_data<mainevt_state>();
k052109_tilemap_update(state->m_k052109);
bitmap_fill(screen->machine().priority_bitmap, cliprect, 0);
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 1, TILEMAP_DRAW_OPAQUE, 1);
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 2, 1, 2); /* low priority part of layer */
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 2, 0, 4); /* high priority part of layer */
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 0, 0, 8);
k051960_sprites_draw(state->m_k051960, bitmap, cliprect, -1, -1);
return 0;
}
SCREEN_UPDATE( dv )
{
mainevt_state *state = screen->machine().driver_data<mainevt_state>();
k052109_tilemap_update(state->m_k052109);
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 1, TILEMAP_DRAW_OPAQUE, 0);
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 2, 0, 0);
k051960_sprites_draw(state->m_k051960, bitmap, cliprect, 0, 0);
k052109_tilemap_draw(state->m_k052109, bitmap, cliprect, 0, 0, 0);
return 0;
}
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