/***************************************************************************
Vapour Trail Video emulation - Bryan McPhail, mish@tendril.co.uk
****************************************************************************
2 Data East 55 chips for playfields (same as Dark Seal, etc)
1 Data East MXC-06 chip for sprites (same as Bad Dudes, etc)
***************************************************************************/
#include "emu.h"
#include "video/deco16ic.h"
#include "includes/vaportra.h"
#include "video/decmxc06.h"
/******************************************************************************/
WRITE16_HANDLER( vaportra_priority_w )
{
vaportra_state *state = space->machine().driver_data<vaportra_state>();
COMBINE_DATA(&state->m_priority[offset]);
}
/******************************************************************************/
static void update_24bitcol( running_machine &machine, int offset )
{
UINT8 r, g, b;
r = (machine.generic.paletteram.u16[offset] >> 0) & 0xff;
g = (machine.generic.paletteram.u16[offset] >> 8) & 0xff;
b = (machine.generic.paletteram2.u16[offset] >> 0) & 0xff;
palette_set_color(machine, offset, MAKE_RGB(r,g,b));
}
WRITE16_HANDLER( vaportra_palette_24bit_rg_w )
{
COMBINE_DATA(&space->machine().generic.paletteram.u16[offset]);
update_24bitcol(space->machine(), offset);
}
WRITE16_HANDLER( vaportra_palette_24bit_b_w )
{
COMBINE_DATA(&space->machine().generic.paletteram2.u16[offset]);
update_24bitcol(space->machine(), offset);
}
/******************************************************************************/
SCREEN_UPDATE( vaportra )
{
vaportra_state *state = screen->machine().driver_data<vaportra_state>();
UINT16 flip = deco16ic_pf_control_r(state->m_deco_tilegen1, 0, 0xffff);
int pri = state->m_priority[0] & 0x03;
flip_screen_set(screen->machine(), !BIT(flip, 7));
deco16ic_pf_update(state->m_deco_tilegen1, 0, 0);
deco16ic_pf_update(state->m_deco_tilegen2, 0, 0);
screen->machine().device<deco_mxc06_device>("spritegen")->set_pri_type(1); // force priorities to be handled in a different way for this driver for now
/* Draw playfields */
if (pri == 0)
{
deco16ic_tilemap_2_draw(state->m_deco_tilegen2, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
deco16ic_tilemap_1_draw(state->m_deco_tilegen2, bitmap, cliprect, 0, 0);
screen->machine().device<deco_mxc06_device>("spritegen")->draw_sprites(screen->machine(), bitmap, cliprect, screen->machine().generic.buffered_spriteram.u16, 0, state->m_priority[1], 0x0f);
deco16ic_tilemap_2_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0);
}
else if (pri == 1)
{
deco16ic_tilemap_1_draw(state->m_deco_tilegen2, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
deco16ic_tilemap_2_draw(state->m_deco_tilegen2, bitmap, cliprect, 0, 0);
screen->machine().device<deco_mxc06_device>("spritegen")->draw_sprites(screen->machine(), bitmap, cliprect, screen->machine().generic.buffered_spriteram.u16, 0, state->m_priority[1], 0x0f);
deco16ic_tilemap_2_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0);
}
else if (pri == 2)
{
deco16ic_tilemap_2_draw(state->m_deco_tilegen2, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
deco16ic_tilemap_2_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0);
screen->machine().device<deco_mxc06_device>("spritegen")->draw_sprites(screen->machine(), bitmap, cliprect, screen->machine().generic.buffered_spriteram.u16, 0, state->m_priority[1], 0x0f);
deco16ic_tilemap_1_draw(state->m_deco_tilegen2, bitmap, cliprect, 0, 0);
}
else
{
deco16ic_tilemap_1_draw(state->m_deco_tilegen2, bitmap, cliprect, TILEMAP_DRAW_OPAQUE, 0);
deco16ic_tilemap_2_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0);
screen->machine().device<deco_mxc06_device>("spritegen")->draw_sprites(screen->machine(), bitmap, cliprect, screen->machine().generic.buffered_spriteram.u16, 0, state->m_priority[1], 0x0f);
deco16ic_tilemap_2_draw(state->m_deco_tilegen2, bitmap, cliprect, 0, 0);
}
screen->machine().device<deco_mxc06_device>("spritegen")->draw_sprites(screen->machine(), bitmap, cliprect, screen->machine().generic.buffered_spriteram.u16, 1, state->m_priority[1], 0x0f);
deco16ic_tilemap_1_draw(state->m_deco_tilegen1, bitmap, cliprect, 0, 0);
return 0;
}