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/***************************************************************************
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<decospr_device>("spritegen")->alloc_sprite_bitmap(machine);
}
SCREEN_UPDATE( twocrude )
{
cbuster_state *state = screen->machine().driver_data<cbuster_state>();
UINT16 flip = deco16ic_pf_control_r(state->m_deco_tilegen1, 0, 0xffff);
flip_screen_set(screen->machine(), !BIT(flip, 7));
screen->machine().device<decospr_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<decospr_device>("spritegen")->inefficient_copy_sprite_bitmap(screen->machine(), bitmap, cliprect, 0x0800, 0x0900, 0x100, 0x0ff);
screen->machine().device<decospr_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<decospr_device>("spritegen")->inefficient_copy_sprite_bitmap(screen->machine(), bitmap, cliprect, 0x0000, 0x0900, 0x100, 0x0ff);
screen->machine().device<decospr_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;
}
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