/* video/pass.c - see drivers/pass.c for more info */
#include "emu.h"
#include "includes/pass.h"
/* background tilemap stuff */
static TILE_GET_INFO( get_pass_bg_tile_info )
{
pass_state *state = machine.driver_data<pass_state>();
int tileno, fx;
tileno = state->m_bg_videoram[tile_index] & 0x1fff;
fx = (state->m_bg_videoram[tile_index] & 0xc000) >> 14;
SET_TILE_INFO(1, tileno, 0, TILE_FLIPYX(fx));
}
WRITE16_HANDLER( pass_bg_videoram_w )
{
pass_state *state = space->machine().driver_data<pass_state>();
state->m_bg_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_bg_tilemap, offset);
}
/* foreground 'sprites' tilemap stuff */
static TILE_GET_INFO( get_pass_fg_tile_info )
{
pass_state *state = machine.driver_data<pass_state>();
int tileno, flip;
tileno = state->m_fg_videoram[tile_index] & 0x3fff;
flip = (state->m_fg_videoram[tile_index] & 0xc000) >>14;
SET_TILE_INFO(0, tileno, 0, TILE_FLIPYX(flip));
}
WRITE16_HANDLER( pass_fg_videoram_w )
{
pass_state *state = space->machine().driver_data<pass_state>();
state->m_fg_videoram[offset] = data;
tilemap_mark_tile_dirty(state->m_fg_tilemap, offset);
}
/* video update / start */
VIDEO_START( pass )
{
pass_state *state = machine.driver_data<pass_state>();
state->m_bg_tilemap = tilemap_create(machine, get_pass_bg_tile_info, tilemap_scan_rows, 8, 8, 64, 32);
state->m_fg_tilemap = tilemap_create(machine, get_pass_fg_tile_info, tilemap_scan_rows, 4, 4, 128, 64);
tilemap_set_transparent_pen(state->m_fg_tilemap, 255);
}
SCREEN_UPDATE( pass )
{
pass_state *state = screen->machine().driver_data<pass_state>();
tilemap_draw(bitmap,cliprect,state->m_bg_tilemap, 0, 0);
tilemap_draw(bitmap,cliprect,state->m_fg_tilemap, 0, 0);
return 0;
}