// license:BSD-3-Clause
// copyright-holders:Nicola Salmoria
/***************************************************************************
Galaxian hardware family
***************************************************************************/
#include "emu.h"
#include "includes/galaxold.h"
#define STARS_COLOR_BASE (memregion("proms")->bytes())
#define BULLETS_COLOR_BASE (STARS_COLOR_BASE + 64)
#define BACKGROUND_COLOR_BASE (BULLETS_COLOR_BASE + 2)
/***************************************************************************
Convert the color PROMs into a more useable format.
Galaxian has one 32 bytes palette PROM, connected to the RGB output this way:
bit 7 -- 220 ohm resistor -- BLUE
-- 470 ohm resistor -- BLUE
-- 220 ohm resistor -- GREEN
-- 470 ohm resistor -- GREEN
-- 1 kohm resistor -- GREEN
-- 220 ohm resistor -- RED
-- 470 ohm resistor -- RED
bit 0 -- 1 kohm resistor -- RED
The output of the background star generator is connected this way:
bit 5 -- 100 ohm resistor -- BLUE
-- 150 ohm resistor -- BLUE
-- 100 ohm resistor -- GREEN
-- 150 ohm resistor -- GREEN
-- 100 ohm resistor -- RED
bit 0 -- 150 ohm resistor -- RED
The blue background in Scramble and other games goes through a 390 ohm
resistor.
The bullet RGB outputs go through 100 ohm resistors.
The RGB outputs have a 470 ohm pull-down each.
***************************************************************************/
void galaxold_state::galaxold_palette(palette_device &palette)
{
const uint8_t *color_prom = memregion("proms")->base();
// first, the character/sprite palette
int const len = memregion("proms")->bytes();
for (int i = 0; i < len; i++)
{
int bit0, bit1, bit2;
// red component
bit0 = BIT(*color_prom, 0);
bit1 = BIT(*color_prom, 1);
bit2 = BIT(*color_prom, 2);
int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// green component
bit0 = BIT(*color_prom, 3);
bit1 = BIT(*color_prom, 4);
bit2 = BIT(*color_prom, 5);
int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// blue component
bit0 = BIT(*color_prom, 6);
bit1 = BIT(*color_prom, 7);
int const b = 0x4f * bit0 + 0xa8 * bit1;
palette.set_pen_color(i, r, g, b);
color_prom++;
}
galaxold_init_stars(STARS_COLOR_BASE);
// bullets - yellow and white
palette.set_pen_color(BULLETS_COLOR_BASE + 0, rgb_t(0xef, 0xef, 0x00));
palette.set_pen_color(BULLETS_COLOR_BASE + 1, rgb_t(0xef, 0xef, 0xef));
}
void galaxold_state::scrambold_palette(palette_device &palette)
{
galaxold_palette(palette);
// blue background - 390 ohm resistor
palette.set_pen_color(BACKGROUND_COLOR_BASE, rgb_t(0, 0, 0x56));
}
void galaxold_state::stratgyx_palette(palette_device &palette)
{
galaxold_palette(palette);
/* The background color generator is connected this way:
RED - 270 ohm resistor
GREEN - 560 ohm resistor
BLUE - 470 ohm resistor */
for (int i = 0; i < 8; i++)
{
int const r = BIT(i, 0) * 0x7c;
int const g = BIT(i, 1) * 0x3c;
int const b = BIT(i, 2) * 0x47;
palette.set_pen_color(BACKGROUND_COLOR_BASE + i, r, g, b);
}
}
void galaxold_state::rockclim_palette(palette_device &palette) const
{
const uint8_t *color_prom = memregion("proms")->base();
// first, the character/sprite palette
int const len = memregion("proms")->bytes();
for (int i = 0; i < len; i++)
{
int bit0, bit1, bit2;
// red component
bit0 = BIT(*color_prom, 0);
bit1 = BIT(*color_prom, 1);
bit2 = BIT(*color_prom, 2);
int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// green component
bit0 = BIT(*color_prom, 3);
bit1 = BIT(*color_prom, 4);
bit2 = BIT(*color_prom, 5);
int const g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// blue component
bit0 = BIT(*color_prom, 6);
bit1 = BIT(*color_prom, 7);
int const b = 0x4f * bit0 + 0xa8 * bit1;
palette.set_pen_color(i, r, g, b);
color_prom++;
}
}
/***************************************************************************
Convert the color PROMs into a more useable format.
Dark Planet has one 32 bytes palette PROM, connected to the RGB output this way:
bit 5 -- 220 ohm resistor -- BLUE
-- 470 ohm resistor -- BLUE
-- 1 kohm resistor -- BLUE
-- 220 ohm resistor -- RED
-- 470 ohm resistor -- RED
bit 0 -- 1 kohm resistor -- RED
The bullet RGB outputs go through 100 ohm resistors.
The RGB outputs have a 470 ohm pull-down each.
***************************************************************************/
void galaxold_state::darkplnt_palette(palette_device &palette) const
{
const uint8_t *color_prom = memregion("proms")->base();
// first, the character/sprite palette
for (int i = 0; i < 32; i++)
{
int bit0, bit1, bit2;
// red component
bit0 = BIT(*color_prom, 0);
bit1 = BIT(*color_prom, 1);
bit2 = BIT(*color_prom, 2);
int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// green component
int const g = 0x00;
// blue component
bit0 = BIT(*color_prom, 3);
bit1 = BIT(*color_prom, 4);
bit2 = BIT(*color_prom, 5);
int const b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
palette.set_pen_color(i, r, g, b);
color_prom++;
}
// bullets - red and blue
palette.set_pen_color(BULLETS_COLOR_BASE + 0, rgb_t(0xef, 0x00, 0x00));
palette.set_pen_color(BULLETS_COLOR_BASE + 1, rgb_t(0x00, 0x00, 0xef));
}
void galaxold_state::minefld_palette(palette_device &palette)
{
galaxold_palette(palette);
// set up background colors
// graduated blue
for (int i = 0; i < 128; i++)
{
int const r = 0;
int const g = i;
int const b = i * 2;
palette.set_pen_color(BACKGROUND_COLOR_BASE + i, r, g, b);
}
// graduated brown
for (int i = 0; i < 128; i++)
{
int const r = i * 1.5;
int const g = i * 0.75;
int const b = i / 2;
palette.set_pen_color(BACKGROUND_COLOR_BASE + 128 + i, r, g, b);
}
}
void galaxold_state::rescue_palette(palette_device &palette)
{
galaxold_palette(palette);
// set up background colors
// graduated blue
for (int i = 0; i < 128; i++)
{
int const r = 0;
int const g = i;
int const b = i * 2;
palette.set_pen_color(BACKGROUND_COLOR_BASE + i, r, g, b);
}
}
void galaxold_state::mariner_palette(palette_device &palette)
{
galaxold_palette(palette);
/* set up background colors */
/* 16 shades of blue - the 4 bits are connected to the following resistors:
bit 0 -- 4.7 kohm resistor
-- 2.2 kohm resistor
-- 1 kohm resistor
bit 0 -- .47 kohm resistor */
for (int i = 0; i < 16; i++)
{
int const r = 0;
int const g = 0;
int const b = 0x0e * BIT(i, 0) + 0x1f * BIT(i, 1) + 0x43 * BIT(i, 2) + 0x8f * BIT(i, 3);
palette.set_pen_color(BACKGROUND_COLOR_BASE + i, r, g, b);
}
}
// swapped r/g/b hook-up
void galaxold_state::dambustr_palette(palette_device &palette)
{
const uint8_t *color_prom = memregion("proms")->base();
// first, the character/sprite palette
int const len = memregion("proms")->bytes();
for (int i = 0; i < len; i++)
{
int bit0, bit1, bit2;
// red component
bit0 = BIT(*color_prom, 0);
bit1 = BIT(*color_prom, 1);
bit2 = BIT(*color_prom, 2);
int const b = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// green component
bit0 = BIT(*color_prom, 3);
bit1 = BIT(*color_prom, 4);
bit2 = BIT(*color_prom, 5);
int const r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
// blue component
bit0 = BIT(*color_prom, 6);
bit1 = BIT(*color_prom, 7);
int const g = 0x4f * bit0 + 0xa8 * bit1;
palette.set_pen_color(i, r, g, b);
color_prom++;
}
galaxold_init_stars(STARS_COLOR_BASE);
// bullets - yellow and white
palette.set_pen_color(BULLETS_COLOR_BASE + 0, rgb_t(0xef, 0xef, 0x00));
palette.set_pen_color(BULLETS_COLOR_BASE + 1, rgb_t(0xef, 0xef, 0xef));
/*
Assumption (not clear from the schematics):
The background color generator is connected this way:
RED - 470 ohm resistor
GREEN - 470 ohm resistor
BLUE - 470 ohm resistor */
for (int i = 0; i < 8; i++)
{
int const r = BIT(i, 0) * 0x47;
int const g = BIT(i, 1) * 0x47;
int const b = BIT(i, 2) * 0x4f;
palette.set_pen_color(BACKGROUND_COLOR_BASE + i, r, g, b);
}
}
void galaxold_state::turtles_palette(palette_device &palette)
{
galaxold_palette(palette);
/* The background color generator is connected this way:
RED - 390 ohm resistor
GREEN - 470 ohm resistor
BLUE - 390 ohm resistor */
for (int i = 0; i < 8; i++)
{
int const r = BIT(i, 0) * 0x55;
int const g = BIT(i, 1) * 0x47;
int const b = BIT(i, 2) * 0x55;
palette.set_pen_color(BACKGROUND_COLOR_BASE + i, r, g, b);
}
}
/***************************************************************************
Start the video hardware emulation.
***************************************************************************/
void galaxold_state::state_save_register()
{
save_item(NAME(m_gfxbank));
save_item(NAME(m_flipscreen_x));
save_item(NAME(m_flipscreen_y));
save_item(NAME(m_stars_on));
save_item(NAME(m_stars_scrollpos));
save_item(NAME(m_stars_blink_state));
save_item(NAME(m_timer_adjusted));
save_item(NAME(m_darkplnt_bullet_color));
save_item(NAME(m_background_enable));
save_item(NAME(m_background_red));
save_item(NAME(m_background_green));
save_item(NAME(m_background_blue));
}
void galaxold_state::video_start_common()
{
m_modify_charcode = nullptr;
m_modify_spritecode = nullptr;
m_modify_color = nullptr;
m_modify_ypos = nullptr;
m_draw_bullets = nullptr;
m_draw_background = &galaxold_state::galaxold_draw_background;
m_background_enable = 0;
m_background_blue = 0;
m_background_red = 0;
m_background_green = 0;
m_draw_stars = &galaxold_state::noop_draw_stars;
m_flipscreen_x = 0;
m_flipscreen_y = 0;
m_spriteram2_present = 0;
state_save_register();
}
VIDEO_START_MEMBER(galaxold_state,galaxold_plain)
{
video_start_common();
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::get_tile_info)), TILEMAP_SCAN_ROWS,8,8,32,32);
m_bg_tilemap->set_transparent_pen(0);
m_bg_tilemap->set_scroll_cols(32);
m_color_mask = (m_gfxdecode->gfx(0)->granularity() == 4) ? 7 : 3;
}
VIDEO_START_MEMBER(galaxold_state,galaxold)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_draw_stars = &galaxold_state::galaxold_draw_stars;
m_draw_bullets = &galaxold_state::galaxold_draw_bullets;
}
VIDEO_START_MEMBER(galaxold_state,scrambold)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
/* FIXME: This most probably needs to be adjusted
* again when RAW video params are added to scramble
*/
m_bg_tilemap->set_scrolldx(0, 0);
m_draw_stars = &galaxold_state::scrambold_draw_stars;
m_draw_bullets = &galaxold_state::scrambold_draw_bullets;
m_draw_background = &galaxold_state::scrambold_draw_background;
}
VIDEO_START_MEMBER(galaxold_state, newsin7)
{
VIDEO_START_CALL_MEMBER(scrambold);
m_leftclip = 0;
}
VIDEO_START_MEMBER(galaxold_state,darkplnt)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_bg_tilemap->set_scrolldx(0, 0);
m_draw_bullets = &galaxold_state::darkplnt_draw_bullets;
}
VIDEO_START_MEMBER(galaxold_state,rescue)
{
VIDEO_START_CALL_MEMBER(scrambold);
m_draw_stars = &galaxold_state::rescue_draw_stars;
m_draw_background = &galaxold_state::rescue_draw_background;
}
VIDEO_START_MEMBER(galaxold_state,minefld)
{
VIDEO_START_CALL_MEMBER(scrambold);
m_draw_stars = &galaxold_state::rescue_draw_stars;
m_draw_background = &galaxold_state::minefld_draw_background;
}
VIDEO_START_MEMBER(galaxold_state,stratgyx)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_draw_background = &galaxold_state::stratgyx_draw_background;
// level 3 tank bullets
m_draw_bullets = &galaxold_state::scrambold_draw_bullets;
}
VIDEO_START_MEMBER(galaxold_state,ckongs)
{
VIDEO_START_CALL_MEMBER(scrambold);
m_modify_spritecode = &galaxold_state::mshuttle_modify_spritecode;
}
VIDEO_START_MEMBER(galaxold_state,mariner)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_draw_stars = &galaxold_state::mariner_draw_stars;
m_draw_bullets = &galaxold_state::scrambold_draw_bullets;
m_draw_background = &galaxold_state::mariner_draw_background;
m_modify_charcode = &galaxold_state::mariner_modify_charcode;
}
VIDEO_START_MEMBER(galaxold_state,mimonkey)
{
VIDEO_START_CALL_MEMBER(scrambold);
m_modify_charcode = &galaxold_state::mimonkey_modify_charcode;
m_modify_spritecode = &galaxold_state::mimonkey_modify_spritecode;
}
VIDEO_START_MEMBER(galaxold_state,dkongjrm)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_modify_charcode = &galaxold_state::pisces_modify_charcode;
m_modify_spritecode = &galaxold_state::dkongjrm_modify_spritecode;
m_spriteram2_present= 1;
}
VIDEO_START_MEMBER(galaxold_state,dkongjrmc)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_modify_charcode = &galaxold_state::pisces_modify_charcode;
m_modify_spritecode = &galaxold_state::dkongjrmc_modify_spritecode;
}
VIDEO_START_MEMBER(galaxold_state,scorpion)
{
VIDEO_START_CALL_MEMBER(scrambold);
m_modify_spritecode = &galaxold_state::batman2_modify_spritecode;
}
void galaxold_state::pisces_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code |= (m_gfxbank[0] << 6);
}
VIDEO_START_MEMBER(galaxold_state,pisces)
{
VIDEO_START_CALL_MEMBER(galaxold);
m_modify_charcode = &galaxold_state::pisces_modify_charcode;
m_modify_spritecode = &galaxold_state::pisces_modify_spritecode;
}
#ifdef UNUSED_FUNCTION
void galaxold_state::theend_draw_bullets(bitmap_ind16 &bitmap, const rectangle &cliprect, int offs, int x, int y)
{
int i;
/* same as Galaxian, but all bullets are yellow */
for (i = 0; i < 4; i++)
{
x--;
if (cliprect.contains(x, y))
bitmap.pix16(y, x) = BULLETS_COLOR_BASE;
}
}
VIDEO_START_MEMBER(galaxold_state,theend)
{
VIDEO_START_CALL_MEMBER(galaxold);
m_draw_bullets = &galaxold_state::theend_draw_bullets;
}
#endif
void galaxold_state::mooncrst_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
if (m_gfxbank[2] && ((*code & 0x30) == 0x20))
{
*code = (*code & 0x0f) | (m_gfxbank[0] << 4) | (m_gfxbank[1] << 5) | 0x40;
}
}
VIDEO_START_MEMBER(galaxold_state,mooncrst)
{
VIDEO_START_CALL_MEMBER(galaxold);
m_modify_charcode = &galaxold_state::mooncrst_modify_charcode;
m_modify_spritecode = &galaxold_state::mooncrst_modify_spritecode;
}
void galaxold_state::rockclim_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
m_rockclim_tilemap->draw(screen, bitmap, cliprect, 0,0);
}
void galaxold_state::rockclim_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
if (m_gfxbank[2]) *code|=0x40;
}
VIDEO_START_MEMBER(galaxold_state,rockclim)
{
VIDEO_START_CALL_MEMBER(galaxold);
m_rockclim_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::rockclim_get_tile_info)), TILEMAP_SCAN_ROWS,8,8,64,32);
m_draw_background = &galaxold_state::rockclim_draw_background;
m_modify_charcode = &galaxold_state::mooncrst_modify_charcode;
m_modify_spritecode = &galaxold_state::rockclim_modify_spritecode;
m_rockclim_v = m_rockclim_h = 0;
save_item(NAME(m_rockclim_v));
save_item(NAME(m_rockclim_h));
}
TILE_GET_INFO_MEMBER(galaxold_state::drivfrcg_get_tile_info)
{
int code = m_videoram[tile_index];
uint8_t x = tile_index & 0x1f;
uint8_t color = m_attributesram[(x << 1) | 1] & 7;
uint8_t bank = m_attributesram[(x << 1) | 1] & 0x30;
code |= (bank << 4);
color |= ((m_attributesram[(x << 1) | 1] & 0x40) >> 3);
SET_TILE_INFO_MEMBER(0, code, color, 0);
}
VIDEO_START_MEMBER(galaxold_state,drivfrcg)
{
video_start_common();
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::drivfrcg_get_tile_info)), TILEMAP_SCAN_ROWS,8,8,32,32);
m_bg_tilemap->set_transparent_pen(0);
m_bg_tilemap->set_scroll_cols(32);
m_modify_spritecode = &galaxold_state::mshuttle_modify_spritecode;
m_modify_color = &galaxold_state::drivfrcg_modify_color;
m_color_mask = 0xff;
}
VIDEO_START_MEMBER(galaxold_state,ad2083)
{
video_start_common();
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::drivfrcg_get_tile_info)), TILEMAP_SCAN_ROWS,8,8,32,32);
m_bg_tilemap->set_transparent_pen(0);
m_bg_tilemap->set_scroll_cols(32);
m_modify_spritecode = &galaxold_state::ad2083_modify_spritecode;
m_draw_bullets = &galaxold_state::scrambold_draw_bullets;
m_draw_background = &galaxold_state::ad2083_draw_background;
m_color_mask = 7;
}
WRITE8_MEMBER(galaxold_state::racknrol_tiles_bank_w)
{
m_racknrol_tiles_bank[offset] = data;
m_bg_tilemap->mark_all_dirty();
}
TILE_GET_INFO_MEMBER(galaxold_state::racknrol_get_tile_info)
{
int code = m_videoram[tile_index];
uint8_t x = tile_index & 0x1f;
uint8_t color = m_attributesram[(x << 1) | 1] & 7;
uint8_t bank = m_racknrol_tiles_bank[x] & 7;
code |= (bank << 8);
SET_TILE_INFO_MEMBER(0, code, color, 0);
}
VIDEO_START_MEMBER(galaxold_state,racknrol)
{
video_start_common();
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::racknrol_get_tile_info)), TILEMAP_SCAN_ROWS,8,8,32,32);
m_bg_tilemap->set_transparent_pen(0);
m_bg_tilemap->set_scroll_cols(32);
m_color_mask = 0xff;
}
// Harem
TILE_GET_INFO_MEMBER(galaxold_state::harem_get_tile_info)
{
int code = m_videoram[tile_index];
uint8_t x = tile_index & 0x1f;
uint8_t color = m_attributesram[(x << 1) | 1] & 7;
uint8_t bank = BIT(m_racknrol_tiles_bank[0], x/4); // 1 bit every 4 columns
code |= bank * 0x200;
SET_TILE_INFO_MEMBER(0, code, color, 0);
}
void galaxold_state::harem_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code |= (m_gfxbank[0] << 7) | 0x40;
}
VIDEO_START_MEMBER(galaxold_state,harem)
{
video_start_common();
m_bg_tilemap = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::harem_get_tile_info)), TILEMAP_SCAN_ROWS,8,8,32,32);
// m_bg_tilemap->set_transparent_pen(0); // opaque tilemap to get sky and sand colors
m_bg_tilemap->set_scroll_cols(32);
m_color_mask = (m_gfxdecode->gfx(0)->granularity() == 4) ? 7 : 3;
m_modify_spritecode = &galaxold_state::harem_modify_spritecode;
}
VIDEO_START_MEMBER(galaxold_state,ozon1)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_bg_tilemap->set_scrolldx(0, 384-256);
}
VIDEO_START_MEMBER(galaxold_state,bongo)
{
VIDEO_START_CALL_MEMBER(galaxold_plain);
m_bg_tilemap->set_scrolldx(0, 384-256);
m_modify_spritecode = &galaxold_state::batman2_modify_spritecode;
}
TILE_GET_INFO_MEMBER(galaxold_state::dambustr_get_tile_info2)
{
uint8_t x = tile_index & 0x1f;
uint16_t code = m_dambustr_videoram2[tile_index];
uint8_t color = m_attributesram[(x << 1) | 1] & m_color_mask;
if (m_modify_charcode)
{
(this->*m_modify_charcode)(&code, x);
}
if (m_modify_color)
{
(this->*m_modify_color)(&color);
}
SET_TILE_INFO_MEMBER(0, code, color, 0);
}
VIDEO_START_MEMBER(galaxold_state,dambustr)
{
VIDEO_START_CALL_MEMBER(galaxold);
m_dambustr_bg_split_line = 0;
m_dambustr_bg_color_1 = 0;
m_dambustr_bg_color_2 = 0;
m_dambustr_bg_priority = 0;
m_dambustr_char_bank = 0;
m_draw_background = &galaxold_state::dambustr_draw_background;
m_modify_charcode = &galaxold_state::dambustr_modify_charcode;
m_modify_spritecode = &galaxold_state::dambustr_modify_spritecode;
m_draw_bullets = &galaxold_state::dambustr_draw_bullets;
/* allocate the temporary bitmap for the background priority */
m_dambustr_tmpbitmap = std::make_unique<bitmap_ind16>(m_screen->width(), m_screen->height());
/* make a copy of the tilemap to emulate background priority */
m_dambustr_videoram2 = std::make_unique<uint8_t[]>(0x0400);
m_dambustr_tilemap2 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(*this, FUNC(galaxold_state::dambustr_get_tile_info2)), TILEMAP_SCAN_ROWS,8,8,32,32);
m_dambustr_tilemap2->set_transparent_pen(0);
}
WRITE8_MEMBER(galaxold_state::galaxold_videoram_w)
{
m_videoram[offset] = data;
m_bg_tilemap->mark_tile_dirty(offset);
}
READ8_MEMBER(galaxold_state::galaxold_videoram_r)
{
return m_videoram[offset];
}
WRITE8_MEMBER(galaxold_state::galaxold_attributesram_w)
{
if (m_attributesram[offset] != data)
{
if (offset & 0x01)
{
/* color change */
int i;
for (i = offset >> 1; i < 0x0400; i += 32)
m_bg_tilemap->mark_tile_dirty(i);
}
else
{
if (m_modify_ypos)
{
(this->*m_modify_ypos)(&data);
}
m_bg_tilemap->set_scrolly(offset >> 1, data);
}
m_attributesram[offset] = data;
}
}
WRITE8_MEMBER(galaxold_state::galaxold_flip_screen_x_w)
{
if (m_flipscreen_x != (data & 0x01))
{
m_flipscreen_x = data & 0x01;
m_bg_tilemap->set_flip((m_flipscreen_x ? TILEMAP_FLIPX : 0) | (m_flipscreen_y ? TILEMAP_FLIPY : 0));
}
}
WRITE8_MEMBER(galaxold_state::galaxold_flip_screen_y_w)
{
if (m_flipscreen_y != (data & 0x01))
{
m_flipscreen_y = data & 0x01;
m_bg_tilemap->set_flip((m_flipscreen_x ? TILEMAP_FLIPX : 0) | (m_flipscreen_y ? TILEMAP_FLIPY : 0));
}
}
#ifdef UNUSED_FUNCTION
WRITE8_MEMBER(galaxold_state::gteikob2_flip_screen_x_w)
{
galaxold_flip_screen_x_w(space, offset, ~data);
}
WRITE8_MEMBER(galaxold_state::gteikob2_flip_screen_y_w)
{
galaxold_flip_screen_y_w(space, offset, ~data);
}
#endif
WRITE8_MEMBER(galaxold_state::hotshock_flip_screen_w)
{
galaxold_flip_screen_x_w(space, offset, data);
galaxold_flip_screen_y_w(space, offset, data);
}
WRITE8_MEMBER(galaxold_state::scrambold_background_enable_w)
{
m_background_enable = data & 0x01;
}
WRITE8_MEMBER(galaxold_state::scrambold_background_red_w)
{
m_background_red = data & 0x01;
}
WRITE8_MEMBER(galaxold_state::scrambold_background_green_w)
{
m_background_green = data & 0x01;
}
WRITE8_MEMBER(galaxold_state::scrambold_background_blue_w)
{
m_background_blue = data & 0x01;
}
WRITE8_MEMBER(galaxold_state::galaxold_stars_enable_w)
{
m_stars_on = data & 0x01;
if (!m_stars_on)
{
m_stars_scrollpos = 0;
}
}
WRITE8_MEMBER(galaxold_state::darkplnt_bullet_color_w)
{
m_darkplnt_bullet_color = data & 0x01;
}
WRITE8_MEMBER(galaxold_state::galaxold_gfxbank_w)
{
if (m_gfxbank[offset] != data)
{
m_gfxbank[offset] = data;
m_bg_tilemap->mark_all_dirty();
}
}
WRITE8_MEMBER(galaxold_state::rockclim_videoram_w)
{
m_rockclim_videoram[offset] = data;
m_rockclim_tilemap->mark_tile_dirty(offset);
}
WRITE8_MEMBER(galaxold_state::rockclim_scroll_w)
{
switch(offset&3)
{
case 0: m_rockclim_h=(m_rockclim_h&0xff00)|data;m_rockclim_tilemap ->set_scrollx(0, m_rockclim_h );break;
case 1: m_rockclim_h=(m_rockclim_h&0xff)|(data<<8);m_rockclim_tilemap ->set_scrollx(0, m_rockclim_h );break;
case 2: m_rockclim_v=(m_rockclim_v&0xff00)|data;m_rockclim_tilemap ->set_scrolly(0, m_rockclim_v );break;
case 3: m_rockclim_v=(m_rockclim_v&0xff)|(data<<8);m_rockclim_tilemap ->set_scrolly(0, m_rockclim_v );break;
}
}
READ8_MEMBER(galaxold_state::rockclim_videoram_r)
{
return m_rockclim_videoram[offset];
}
WRITE8_MEMBER(galaxold_state::dambustr_bg_split_line_w)
{
m_dambustr_bg_split_line = data;
}
WRITE8_MEMBER(galaxold_state::dambustr_bg_color_w)
{
m_dambustr_bg_color_1 = (BIT(data,2)<<2) | (BIT(data,1)<<1) | BIT(data,0);
m_dambustr_bg_color_2 = (BIT(data,6)<<2) | (BIT(data,5)<<1) | BIT(data,4);
m_dambustr_bg_priority = BIT(data,3);
m_dambustr_char_bank = BIT(data,7);
m_bg_tilemap->mark_all_dirty();
}
/* character banking functions */
void galaxold_state::mooncrst_modify_charcode(uint16_t *code, uint8_t x)
{
if (m_gfxbank[2] && ((*code & 0xc0) == 0x80))
{
*code = (*code & 0x3f) | (m_gfxbank[0] << 6) | (m_gfxbank[1] << 7) | 0x0100;
}
}
void galaxold_state::pisces_modify_charcode(uint16_t *code, uint8_t x)
{
*code |= (m_gfxbank[0] << 8);
}
void galaxold_state::mimonkey_modify_charcode(uint16_t *code, uint8_t x)
{
*code |= (m_gfxbank[0] << 8) | (m_gfxbank[2] << 9);
}
void galaxold_state::mariner_modify_charcode(uint16_t *code, uint8_t x)
{
uint8_t *prom;
/* bit 0 of the PROM controls character banking */
prom = memregion("user2")->base();
*code |= ((prom[x] & 0x01) << 8);
}
void galaxold_state::dambustr_modify_charcode(uint16_t *code, uint8_t x)
{
if (m_dambustr_char_bank == 0) { // text mode
*code |= 0x0300;
}
else { // graphics mode
if (x == 28) // only line #28 stays in text mode
*code |= 0x0300;
else
*code &= 0x00ff;
};
}
/* sprite banking functions */
void galaxold_state::mshuttle_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code |= ((spriteram[offs + 2] & 0x30) << 2);
}
void galaxold_state::mimonkey_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code |= (m_gfxbank[0] << 6) | (m_gfxbank[2] << 7);
}
void galaxold_state::batman2_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
/* only the upper 64 sprites are used */
*code |= 0x40;
}
void galaxold_state::dkongjrm_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
/* No x flip */
*code = (spriteram[offs + 1] & 0x7f) | 0x80;
*flipx = 0;
}
void galaxold_state::dkongjrmc_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code = (spriteram[offs + 1] & 0x7f) | 0x80; // bit 6 is also X flip
}
void galaxold_state::ad2083_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
/* No x flip */
*code = (spriteram[offs + 1] & 0x7f) | ((spriteram[offs + 2] & 0x30) << 2);
*flipx = 0;
}
void galaxold_state::dambustr_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code += 0x40;
}
/* color PROM mapping functions */
void galaxold_state::drivfrcg_modify_color(uint8_t *color)
{
*color = ((*color & 0x40) >> 3) | (*color & 7);
}
/* y position mapping functions */
/* bullet drawing functions */
void galaxold_state::galaxold_draw_bullets(bitmap_ind16 &bitmap, const rectangle &cliprect, int offs, int x, int y)
{
int i;
for (i = 0; i < 4; i++)
{
x--;
if (cliprect.contains(x, y))
{
int color;
/* yellow missile, white shells (this is the terminology on the schematics) */
color = ((offs == 7*4) ? BULLETS_COLOR_BASE : BULLETS_COLOR_BASE + 1);
bitmap.pix16(y, x) = color;
}
}
}
void galaxold_state::scrambold_draw_bullets(bitmap_ind16 &bitmap, const rectangle &cliprect, int offs, int x, int y)
{
if (m_flipscreen_x) x++;
x = x - 6;
if (cliprect.contains(x, y))
/* yellow bullets */
bitmap.pix16(y, x) = BULLETS_COLOR_BASE;
}
void galaxold_state::darkplnt_draw_bullets(bitmap_ind16 &bitmap, const rectangle &cliprect, int offs, int x, int y)
{
if (m_flipscreen_x) x++;
x = x - 6;
if (cliprect.contains(x, y))
bitmap.pix16(y, x) = 32 + m_darkplnt_bullet_color;
}
void galaxold_state::dambustr_draw_bullets(bitmap_ind16 &bitmap, const rectangle &cliprect, int offs, int x, int y)
{
int i, color;
if (flip_screen_x()) x++;
x = x - 6;
/* bullets are 2 pixels wide */
for (i = 0; i < 2; i++)
{
if (offs < 4*4)
{
color = BULLETS_COLOR_BASE;
y--;
}
else {
color = BULLETS_COLOR_BASE + 1;
x--;
}
if (cliprect.contains(x, y))
bitmap.pix16(y, x) = color;
}
}
/* background drawing functions */
void galaxold_state::galaxold_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
/* plain black background */
bitmap.fill(0, cliprect);
}
void galaxold_state::scrambold_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
if (m_background_enable)
bitmap.fill(BACKGROUND_COLOR_BASE, cliprect);
else
bitmap.fill(0, cliprect);
}
void galaxold_state::ad2083_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int color = (m_background_blue << 2) | (m_background_green << 1) | m_background_red;
bitmap.fill(BACKGROUND_COLOR_BASE + color, cliprect);
}
void galaxold_state::stratgyx_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
uint8_t x;
uint8_t *prom;
int base = BACKGROUND_COLOR_BASE;
/* the background PROM is connected the following way:
bit 0 = 0 enables the blue gun if BCB is asserted
bit 1 = 0 enables the red gun if BCR is asserted and
the green gun if BCG is asserted
bits 2-7 are unconnected */
prom = memregion("user1")->base();
for (x = 0; x < 32; x++)
{
int sx,color;
color = 0;
if ((~prom[x] & 0x02) && m_background_red) color |= 0x01;
if ((~prom[x] & 0x02) && m_background_green) color |= 0x02;
if ((~prom[x] & 0x01) && m_background_blue) color |= 0x04;
if (m_flipscreen_x)
sx = 8 * (31 - x);
else
sx = 8 * x;
bitmap.plot_box(sx, 0, 8, 256, base + color);
}
}
void galaxold_state::minefld_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
if (m_background_enable)
{
int base = BACKGROUND_COLOR_BASE;
int x;
for (x = 0; x < 128; x++)
bitmap.plot_box(x, 0, 1, 256, base + x);
for (x = 0; x < 120; x++)
bitmap.plot_box(x + 128, 0, 1, 256, base + x + 128);
bitmap.plot_box(248, 0, 16, 256, base);
}
else
bitmap.fill(0, cliprect);
}
void galaxold_state::rescue_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
if (m_background_enable)
{
int base = BACKGROUND_COLOR_BASE;
int x;
for (x = 0; x < 128; x++)
bitmap.plot_box(x, 0, 1, 256, base + x);
for (x = 0; x < 120; x++)
bitmap.plot_box(x + 128, 0, 1, 256, base + x + 8);
bitmap.plot_box(248, 0, 16, 256, base);
}
else
bitmap.fill(0, cliprect);
}
void galaxold_state::mariner_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int base = BACKGROUND_COLOR_BASE;
uint8_t x;
uint8_t *prom;
/* the background PROM contains the color codes for each 8 pixel
line (column) of the screen. The first 0x20 bytes for unflipped,
and the 2nd 0x20 bytes for flipped screen. */
prom = memregion("user1")->base();
if (m_flipscreen_x)
{
for (x = 0; x < 32; x++)
{
int color;
if (x == 0)
color = 0;
else
color = prom[0x20 + x - 1];
bitmap.plot_box(8 * (31 - x), 0, 8, 256, base + color);
}
}
else
{
for (x = 0; x < 32; x++)
{
int color;
if (x == 31)
color = 0;
else
color = prom[x + 1];
bitmap.plot_box(8 * x, 0, 8, 256, base + color);
}
}
}
void galaxold_state::dambustr_draw_background(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int base = BACKGROUND_COLOR_BASE;
int col1 = base + m_dambustr_bg_color_1;
int col2 = base + m_dambustr_bg_color_2;
if (flip_screen_x())
{
bitmap.plot_box( 0, 0, 256-m_dambustr_bg_split_line, 256, col2);
bitmap.plot_box(256-m_dambustr_bg_split_line, 0, m_dambustr_bg_split_line, 256, col1);
}
else
{
bitmap.plot_box( 0, 0, 256-m_dambustr_bg_split_line, 256, col1);
bitmap.plot_box(256-m_dambustr_bg_split_line, 0, m_dambustr_bg_split_line, 256, col2);
}
}
void galaxold_state::dambustr_draw_upper_background(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
if (flip_screen_x())
{
rectangle clip(254 - m_dambustr_bg_split_line, m_dambustr_bg_split_line, 0, 255);
copybitmap(bitmap, *m_dambustr_tmpbitmap, 0, 0, 0, 0, clip);
}
else
{
rectangle clip(0, 254 - m_dambustr_bg_split_line, 0, 255);
copybitmap(bitmap, *m_dambustr_tmpbitmap, 0, 0, 0, 0, clip);
}
}
/* star drawing functions */
void galaxold_state::galaxold_init_stars(int colors_offset)
{
struct star_gold *stars = m_stars;
int i;
int total_stars;
uint32_t generator;
int x,y;
m_stars_on = 0;
m_stars_blink_state = 0;
m_stars_blink_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(galaxold_state::stars_blink_callback),this));
m_stars_scroll_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(galaxold_state::stars_scroll_callback),this));
m_timer_adjusted = 0;
m_stars_colors_start = colors_offset;
for (i = 0;i < 64;i++)
{
int bits,r,g,b;
static const int map[4] = { 0x00, 0x88, 0xcc, 0xff };
bits = (i >> 0) & 0x03;
r = map[bits];
bits = (i >> 2) & 0x03;
g = map[bits];
bits = (i >> 4) & 0x03;
b = map[bits];
m_palette->set_pen_color(colors_offset+i,r,g,b);
}
/* precalculate the star background */
total_stars = 0;
generator = 0;
for (y = 0;y < 256;y++)
{
for (x = 0;x < 512;x++)
{
uint32_t bit0;
bit0 = ((~generator >> 16) & 0x01) ^ ((generator >> 4) & 0x01);
generator = (generator << 1) | bit0;
if (((~generator >> 16) & 0x01) && (generator & 0xff) == 0xff)
{
int color;
color = (~(generator >> 8)) & 0x3f;
if (color)
{
stars[total_stars].x = x;
stars[total_stars].y = y;
stars[total_stars].color = color;
total_stars++;
}
}
}
}
if (total_stars != STAR_COUNT)
{
fatalerror("total_stars = %d, STAR_COUNT = %d\n",total_stars,STAR_COUNT);
}
}
void galaxold_state::plot_star(bitmap_ind16 &bitmap, int x, int y, int color, const rectangle &cliprect)
{
if (m_flipscreen_x)
x = 255 - x;
if (m_flipscreen_y)
y = 255 - y;
if (cliprect.contains(x, y))
bitmap.pix16(y, x) = m_stars_colors_start + color;
}
void galaxold_state::noop_draw_stars(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
}
void galaxold_state::galaxold_draw_stars(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
struct star_gold *stars = m_stars;
int offs;
if (!m_timer_adjusted)
{
start_stars_scroll_timer();
m_timer_adjusted = 1;
}
for (offs = 0;offs < STAR_COUNT;offs++)
{
int x,y;
x = ((stars[offs].x + m_stars_scrollpos) & 0x01ff) >> 1;
y = ( stars[offs].y + ((m_stars_scrollpos + stars[offs].x) >> 9)) & 0xff;
if ((y & 0x01) ^ ((x >> 3) & 0x01))
{
plot_star(bitmap, x, y, stars[offs].color, cliprect);
}
}
}
void galaxold_state::scrambold_draw_stars(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
struct star_gold *stars = m_stars;
int offs;
if (!m_timer_adjusted)
{
start_stars_blink_timer(100000, 10000, 0.00001);
m_timer_adjusted = 1;
}
for (offs = 0;offs < STAR_COUNT;offs++)
{
int x,y;
x = stars[offs].x >> 1;
y = stars[offs].y;
if ((y & 0x01) ^ ((x >> 3) & 0x01))
{
/* determine when to skip plotting */
switch (m_stars_blink_state & 0x03)
{
case 0:
if (!(stars[offs].color & 0x01)) continue;
break;
case 1:
if (!(stars[offs].color & 0x04)) continue;
break;
case 2:
if (!(stars[offs].y & 0x02)) continue;
break;
case 3:
/* always plot */
break;
}
plot_star(bitmap, x, y, stars[offs].color, cliprect);
}
}
}
void galaxold_state::rescue_draw_stars(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
struct star_gold *stars = m_stars;
int offs;
/* same as Scramble, but only top (left) half of screen */
if (!m_timer_adjusted)
{
start_stars_blink_timer(100000, 10000, 0.00001);
m_timer_adjusted = 1;
}
for (offs = 0;offs < STAR_COUNT;offs++)
{
int x,y;
x = stars[offs].x >> 1;
y = stars[offs].y;
if ((x < 128) && ((y & 0x01) ^ ((x >> 3) & 0x01)))
{
/* determine when to skip plotting */
switch (m_stars_blink_state & 0x03)
{
case 0:
if (!(stars[offs].color & 0x01)) continue;
break;
case 1:
if (!(stars[offs].color & 0x04)) continue;
break;
case 2:
if (!(stars[offs].y & 0x02)) continue;
break;
case 3:
/* always plot */
break;
}
plot_star(bitmap, x, y, stars[offs].color, cliprect);
}
}
}
void galaxold_state::mariner_draw_stars(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
struct star_gold *stars = m_stars;
int offs;
uint8_t *prom;
if (!m_timer_adjusted)
{
start_stars_scroll_timer();
m_timer_adjusted = 1;
}
/* bit 2 of the PROM controls star visibility */
prom = memregion("user2")->base();
for (offs = 0;offs < STAR_COUNT;offs++)
{
int x,y;
x = ((stars[offs].x + -m_stars_scrollpos) & 0x01ff) >> 1;
y = ( stars[offs].y + ((-m_stars_scrollpos + stars[offs].x) >> 9)) & 0xff;
if ((y & 0x01) ^ ((x >> 3) & 0x01))
{
if (prom[(x/8 + 1) & 0x1f] & 0x04)
{
plot_star(bitmap, x, y, stars[offs].color, cliprect);
}
}
}
}
TIMER_CALLBACK_MEMBER(galaxold_state::stars_blink_callback)
{
m_stars_blink_state++;
}
void galaxold_state::start_stars_blink_timer(double ra, double rb, double c)
{
/* calculate the period using the formula given in the 555 datasheet */
int period_in_ms = 693 * (ra + 2.0 * rb) * c;
m_stars_blink_timer->adjust(attotime::from_msec(period_in_ms), 0, attotime::from_msec(period_in_ms));
}
TIMER_CALLBACK_MEMBER(galaxold_state::stars_scroll_callback)
{
if (m_stars_on)
{
m_stars_scrollpos++;
}
}
void galaxold_state::start_stars_scroll_timer()
{
m_stars_scroll_timer->adjust(m_screen->frame_period(), 0, m_screen->frame_period());
}
TILE_GET_INFO_MEMBER(galaxold_state::get_tile_info)
{
uint8_t x = tile_index & 0x1f;
uint16_t code = m_videoram[tile_index];
uint8_t color = m_attributesram[(x << 1) | 1] & m_color_mask;
if (m_modify_charcode)
{
(this->*m_modify_charcode)(&code, x);
}
if (m_modify_color)
{
(this->*m_modify_color)(&color);
}
SET_TILE_INFO_MEMBER(0, code, color, 0);
}
TILE_GET_INFO_MEMBER(galaxold_state::rockclim_get_tile_info)
{
uint16_t code = m_rockclim_videoram[tile_index];
SET_TILE_INFO_MEMBER(2, code, 0, 0);
}
void galaxold_state::draw_bullets_common(bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int offs;
for (offs = 0;offs < m_bulletsram.bytes();offs += 4)
{
uint8_t sx,sy;
sy = 255 - m_bulletsram[offs + 1];
sx = 255 - m_bulletsram[offs + 3];
if (m_flipscreen_y) sy = 255 - sy;
(this->*m_draw_bullets)(bitmap, cliprect, offs, sx, sy);
}
}
void galaxold_state::draw_sprites(bitmap_ind16 &bitmap, uint8_t *spriteram, size_t spriteram_size)
{
const rectangle spritevisiblearea((0+m_leftclip)*8+1, 32*8-1, 2*8, 30*8-1);
const rectangle spritevisibleareaflipx(0*8, (32-m_leftclip)*8-2, 2*8, 30*8-1);
int offs;
for (offs = spriteram_size - 4;offs >= 0;offs -= 4)
{
uint8_t sx,sy,color;
int flipx,flipy,code;
sx = spriteram[offs + 3] + 1; /* the existence of +1 is supported by a LOT of games */
sy = spriteram[offs]; /* Anteater, Mariner, for example */
flipx = spriteram[offs + 1] & 0x40;
flipy = spriteram[offs + 1] & 0x80;
code = spriteram[offs + 1] & 0x3f;
color = spriteram[offs + 2] & m_color_mask;
if (m_modify_spritecode)
{
(this->*m_modify_spritecode)(spriteram, &code, &flipx, &flipy, offs);
}
if (m_modify_color)
{
(this->*m_modify_color)(&color);
}
if (m_modify_ypos)
{
(this->*m_modify_ypos)(&sy);
}
if (m_flipscreen_x)
{
sx = 240 - sx;
flipx = !flipx;
}
if (m_flipscreen_y)
{
flipy = !flipy;
}
else
{
sy = 240 - sy;
}
/* In at least Amidar Turtles, sprites #0, #1 and #2 need to be moved */
/* down (left) one pixel to be positioned correctly. */
/* Note that the adjustment must be done AFTER handling flipscreen, thus */
/* proving that this is a hardware related "feature" */
if (offs < 3*4) sy++;
m_gfxdecode->gfx(1)->transpen(bitmap,m_flipscreen_x ? spritevisibleareaflipx : spritevisiblearea,
code,color,
flipx,flipy,
sx,sy,0);
}
}
uint32_t galaxold_state::screen_update_galaxold(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
(this->*m_draw_background)(screen, bitmap, cliprect);
if (m_stars_on)
{
(this->*m_draw_stars)(bitmap, cliprect);
}
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
if (m_draw_bullets)
{
draw_bullets_common(bitmap, cliprect);
}
draw_sprites(bitmap, m_spriteram, m_spriteram.bytes());
if (m_spriteram2_present)
{
draw_sprites(bitmap, m_spriteram2, m_spriteram2.bytes());
}
return 0;
}
uint32_t galaxold_state::screen_update_dambustr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
int i, j;
uint8_t color;
(this->*m_draw_background)(screen, bitmap, cliprect);
if (m_stars_on)
{
(this->*m_draw_stars)(bitmap, cliprect);
}
/* save the background for drawing it again later, if background has priority over characters */
copybitmap(*m_dambustr_tmpbitmap, bitmap, 0, 0, 0, 0, m_dambustr_tmpbitmap->cliprect());
m_bg_tilemap->draw(screen, bitmap, cliprect, 0, 0);
if (m_draw_bullets)
{
draw_bullets_common(bitmap, cliprect);
}
draw_sprites(bitmap, m_spriteram, m_spriteram.bytes());
if (m_dambustr_bg_priority)
{
/* draw the upper part of the background, as it has priority */
dambustr_draw_upper_background(bitmap, cliprect);
/* only rows with color code > 3 are stronger than the background */
memset(m_dambustr_videoram2.get(), 0x20, 0x0400);
for (i=0; i<32; i++) {
color = m_attributesram[(i << 1) | 1] & m_color_mask;
if (color > 3) {
for (j=0; j<32; j++)
m_dambustr_videoram2[32*j+i] = m_videoram[32*j+i];
};
};
m_dambustr_tilemap2->mark_all_dirty();
m_dambustr_tilemap2->draw(screen, bitmap, cliprect, 0, 0);
};
return 0;
}
void galaxold_state::bagmanmc_modify_charcode(uint16_t *code, uint8_t x)
{
*code |= (m_gfxbank[0] << 9);
}
void galaxold_state::bagmanmc_modify_spritecode(uint8_t *spriteram, int *code, int *flipx, int *flipy, int offs)
{
*code |= (m_gfxbank[0] << 7) | 0x40;
}
VIDEO_START_MEMBER(galaxold_state,bagmanmc)
{
VIDEO_START_CALL_MEMBER(galaxold);
m_modify_charcode = &galaxold_state::bagmanmc_modify_charcode;
m_modify_spritecode = &galaxold_state::bagmanmc_modify_spritecode;
}