// license:BSD-3-Clause
// copyright-holders:Phil Stroffolino
/***************************************************************************
Atari Fire Truck + Super Bug + Monte Carlo video emulation
***************************************************************************/
#include "emu.h"
#include "includes/firetrk.h"
static const rectangle playfield_window(0x02a, 0x115, 0x000, 0x0ff);
PALETTE_INIT_MEMBER(firetrk_state, firetrk)
{
int i;
static const uint8_t colortable_source[] =
{
0, 0, 1, 0,
2, 0, 3, 0,
3, 3, 2, 3,
1, 3, 0, 3,
0, 0, 1, 0,
2, 0, 0, 3,
3, 0, 0, 3
};
static const rgb_t palette_source[] =
{
rgb_t::black(),
rgb_t(0x5b, 0x5b, 0x5b),
rgb_t(0xa4, 0xa4, 0xa4),
rgb_t::white()
};
m_color1_mask = m_color2_mask = 0;
for (i = 0; i < ARRAY_LENGTH(colortable_source); i++)
{
uint8_t color = colortable_source[i];
if (color == 1)
m_color1_mask |= 1 << i;
else if (color == 2)
m_color2_mask |= 1 << i;
palette.set_pen_color(i, palette_source[color]);
}
}
void firetrk_state::prom_to_palette(int number, uint8_t val)
{
m_palette->set_pen_color(number, rgb_t(pal1bit(val >> 2), pal1bit(val >> 1), pal1bit(val >> 0)));
}
PALETTE_INIT_MEMBER(firetrk_state,montecar)
{
const uint8_t *color_prom = memregion("proms")->base();
int i;
static const uint8_t colortable_source[] =
{
0x00, 0x00, 0x00, 0x01,
0x00, 0x02, 0x00, 0x03,
0x03, 0x03, 0x03, 0x02,
0x03, 0x01, 0x03, 0x00,
0x00, 0x00, 0x02, 0x00,
0x02, 0x01, 0x02, 0x02,
0x00, 0x10, 0x20, 0x30,
0x00, 0x04, 0x08, 0x0c,
0x00, 0x44, 0x48, 0x4c,
0x00, 0x84, 0x88, 0x8c,
0x00, 0xc4, 0xc8, 0xcc
};
/*
* The color PROM is addressed as follows:
*
* A0 => PLAYFIELD 1
* A1 => PLAYFIELD 2
* A2 => DRONE 1
* A3 => DRONE 2
* A4 => CAR 1
* A5 => CAR 2
* A6 => DRONE COLOR 1
* A7 => DRONE COLOR 2
* A8 => PLAYFIELD WINDOW
*
* This driver hard-codes some behavior which actually depends
* on the PROM, like priorities, clipping and transparency.
*
*/
m_color1_mask = m_color2_mask = 0;
for (i = 0; i < ARRAY_LENGTH(colortable_source); i++)
{
uint8_t color = colortable_source[i];
if (color == 1)
m_color1_mask |= 1 << i;
else if (color == 2)
m_color2_mask |= 1 << i;
prom_to_palette(i, color_prom[0x100 + colortable_source[i]]);
}
palette.set_pen_color(ARRAY_LENGTH(colortable_source) + 0, rgb_t::black());
palette.set_pen_color(ARRAY_LENGTH(colortable_source) + 1, rgb_t::white());
}
TILE_GET_INFO_MEMBER(firetrk_state::firetrk_get_tile_info1)
{
int code = m_playfield_ram[tile_index] & 0x3f;
int color = (m_playfield_ram[tile_index] >> 6) & 0x03;
if (*m_blink && (code >= 0x04) && (code <= 0x0b))
color = 0;
if (m_flash)
color = color | 0x04;
SET_TILE_INFO_MEMBER(1, code, color, 0);
}
TILE_GET_INFO_MEMBER(firetrk_state::superbug_get_tile_info1)
{
int code = m_playfield_ram[tile_index] & 0x3f;
int color = (m_playfield_ram[tile_index] >> 6) & 0x03;
if (*m_blink && (code >= 0x08) && (code <= 0x0f))
color = 0;
if (m_flash)
color = color | 0x04;
SET_TILE_INFO_MEMBER(1, code, color, 0);
}
TILE_GET_INFO_MEMBER(firetrk_state::montecar_get_tile_info1)
{
int code = m_playfield_ram[tile_index] & 0x3f;
int color = (m_playfield_ram[tile_index] >> 6) & 0x03;
if (m_flash)
color = color | 0x04;
SET_TILE_INFO_MEMBER(1, code, color, 0);
}
TILE_GET_INFO_MEMBER(firetrk_state::firetrk_get_tile_info2)
{
uint8_t code = m_playfield_ram[tile_index] & 0x3f;
int color = 0;
/* palette 1 for crash and palette 2 for skid */
if (((code & 0x30) != 0x00) || ((code & 0x0c) == 0x00))
color = 1; /* palette 0, 1 */
if ((code & 0x3c) == 0x0c)
color = 2; /* palette 0, 2 */
SET_TILE_INFO_MEMBER(2, code, color, 0);
}
TILE_GET_INFO_MEMBER(firetrk_state::superbug_get_tile_info2)
{
uint8_t code = m_playfield_ram[tile_index] & 0x3f;
int color = 0;
/* palette 1 for crash and palette 2 for skid */
if ((code & 0x30) != 0x00)
color = 1; /* palette 0, 1 */
if ((code & 0x38) == 0x00)
color = 2; /* palette 0, 2 */
SET_TILE_INFO_MEMBER(2, code, color, 0);
}
TILE_GET_INFO_MEMBER(firetrk_state::montecar_get_tile_info2)
{
uint8_t code = m_playfield_ram[tile_index];
int color = 0;
/* palette 1 for crash and palette 2 for skid */
if (((code & 0xc0) == 0x40) || ((code & 0xc0) == 0x80))
color = 2; /* palette 2, 1 */
if ((code & 0xc0) == 0xc0)
color = 1; /* palette 2, 0 */
if ((code & 0xc0) == 0x00)
color = 3; /* palette 2, 2 */
if ((code & 0x30) == 0x30)
color = 0; /* palette 0, 0 */
SET_TILE_INFO_MEMBER(2, code & 0x3f, color, 0);
}
void firetrk_state::video_start()
{
m_screen->register_screen_bitmap(m_helper1);
m_screen->register_screen_bitmap(m_helper2);
m_tilemap1 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(firetrk_state::firetrk_get_tile_info1),this), TILEMAP_SCAN_ROWS, 16, 16, 16, 16);
m_tilemap2 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(firetrk_state::firetrk_get_tile_info2),this), TILEMAP_SCAN_ROWS, 16, 16, 16, 16);
}
VIDEO_START_MEMBER(firetrk_state,superbug)
{
m_screen->register_screen_bitmap(m_helper1);
m_screen->register_screen_bitmap(m_helper2);
m_tilemap1 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(firetrk_state::superbug_get_tile_info1),this), TILEMAP_SCAN_ROWS, 16, 16, 16, 16);
m_tilemap2 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(firetrk_state::superbug_get_tile_info2),this), TILEMAP_SCAN_ROWS, 16, 16, 16, 16);
}
VIDEO_START_MEMBER(firetrk_state,montecar)
{
m_screen->register_screen_bitmap(m_helper1);
m_screen->register_screen_bitmap(m_helper2);
m_tilemap1 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(firetrk_state::montecar_get_tile_info1),this), TILEMAP_SCAN_ROWS, 16, 16, 16, 16);
m_tilemap2 = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(firetrk_state::montecar_get_tile_info2),this), TILEMAP_SCAN_ROWS, 16, 16, 16, 16);
}
void firetrk_state::firetrk_draw_car(bitmap_ind16 &bitmap, const rectangle &cliprect, int which, int flash)
{
int gfx_bank, code, color, flip_x, flip_y, x, y;
if (which)
{
gfx_bank = 5;
code = *m_drone_rot & 0x07;
color = flash ? 1 : 0;
flip_x = *m_drone_rot & 0x08;
flip_y = *m_drone_rot & 0x10;
x = (flip_x ? *m_drone_x - 63 : 192 - *m_drone_x) + 36;
y = flip_y ? *m_drone_y - 63 : 192 - *m_drone_y;
}
else
{
gfx_bank = (*m_car_rot & 0x10) ? 4 : 3;
code = *m_car_rot & 0x03;
color = flash ? 1 : 0;
flip_x = *m_car_rot & 0x04;
flip_y = *m_car_rot & 0x08;
x = 144;
y = 104;
}
m_gfxdecode->gfx(gfx_bank)->transpen(bitmap,cliprect, code, color, flip_x, flip_y, x, y, 0);
}
void firetrk_state::superbug_draw_car(bitmap_ind16 &bitmap, const rectangle &cliprect, int flash)
{
int gfx_bank = (*m_car_rot & 0x10) ? 4 : 3;
int code = ~*m_car_rot & 0x03;
int color = flash ? 1 : 0;
int flip_x = *m_car_rot & 0x04;
int flip_y = *m_car_rot & 0x08;
m_gfxdecode->gfx(gfx_bank)->transpen(bitmap,cliprect, code, color, flip_x, flip_y, 144, 104, 0);
}
void firetrk_state::montecar_draw_car(bitmap_ind16 &bitmap, const rectangle &cliprect, int which, int is_collision_detection)
{
int gfx_bank, code, color, flip_x, flip_y, x, y;
if (which)
{
gfx_bank = 4;
code = *m_drone_rot & 0x07;
color = is_collision_detection ? 0 : (((*m_car_rot & 0x80) >> 6) | ((*m_drone_rot & 0x80) >> 7));
flip_x = *m_drone_rot & 0x10;
flip_y = *m_drone_rot & 0x08;
x = (flip_x ? *m_drone_x - 31 : 224 - *m_drone_x) + 34;
y = flip_y ? *m_drone_y - 31 : 224 - *m_drone_y;
}
else
{
gfx_bank = 3;
code = *m_car_rot & 0x07;
color = 0;
flip_x = *m_car_rot & 0x10;
flip_y = *m_car_rot & 0x08;
x = 144;
y = 104;
}
m_gfxdecode->gfx(gfx_bank)->transpen(bitmap,cliprect, code, color, flip_x, flip_y, x, y, 0);
}
void firetrk_state::draw_text(bitmap_ind16 &bitmap, const rectangle &cliprect, uint8_t *alpha_ram,
int x, int count, int height)
{
int i;
for (i = 0; i < count; i++)
m_gfxdecode->gfx(0)->opaque(bitmap,cliprect, alpha_ram[i], 0, 0, 0, x, i * height);
}
void firetrk_state::check_collision(int which)
{
int y, x;
for (y = playfield_window.min_y; y <= playfield_window.max_y; y++)
for (x = playfield_window.min_x; x <= playfield_window.max_x; x++)
{
pen_t a = m_helper1.pix16(y, x);
pen_t b = m_helper2.pix16(y, x);
if (b != 0xff && (m_color1_mask >> a) & 1)
m_crash[which] = 1;
if (b != 0xff && (m_color2_mask >> a) & 1)
m_skid[which] = 1;
}
}
uint32_t firetrk_state::screen_update_firetrk(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
machine().tilemap().mark_all_dirty();
m_tilemap1->set_scrollx(0, *m_scroll_x - 37);
m_tilemap2->set_scrollx(0, *m_scroll_x - 37);
m_tilemap1->set_scrolly(0, *m_scroll_y);
m_tilemap2->set_scrolly(0, *m_scroll_y);
bitmap.fill(0, cliprect);
m_tilemap1->draw(screen, bitmap, playfield_window, 0, 0);
firetrk_draw_car(bitmap, playfield_window, 0, m_flash);
firetrk_draw_car(bitmap, playfield_window, 1, m_flash);
draw_text(bitmap, cliprect, m_alpha_num_ram + 0x00, 296, 0x10, 0x10);
draw_text(bitmap, cliprect, m_alpha_num_ram + 0x10, 8, 0x10, 0x10);
if (cliprect.max_y == screen.visible_area().max_y)
{
m_tilemap2->draw(screen, m_helper1, playfield_window, 0, 0);
m_helper2.fill(0xff, playfield_window);
firetrk_draw_car(m_helper2, playfield_window, 0, false);
check_collision(0);
m_helper2.fill(0xff, playfield_window);
firetrk_draw_car(m_helper2, playfield_window, 1, false);
check_collision(1);
*m_blink = false;
}
return 0;
}
uint32_t firetrk_state::screen_update_superbug(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
machine().tilemap().mark_all_dirty();
m_tilemap1->set_scrollx(0, *m_scroll_x - 37);
m_tilemap2->set_scrollx(0, *m_scroll_x - 37);
m_tilemap1->set_scrolly(0, *m_scroll_y);
m_tilemap2->set_scrolly(0, *m_scroll_y);
bitmap.fill(0, cliprect);
m_tilemap1->draw(screen, bitmap, playfield_window, 0, 0);
superbug_draw_car(bitmap, playfield_window, m_flash);
draw_text(bitmap, cliprect, m_alpha_num_ram + 0x00, 296, 0x10, 0x10);
draw_text(bitmap, cliprect, m_alpha_num_ram + 0x10, 8, 0x10, 0x10);
if (cliprect.max_y == screen.visible_area().max_y)
{
m_tilemap2->draw(screen, m_helper1, playfield_window, 0, 0);
m_helper2.fill(0xff, playfield_window);
superbug_draw_car(m_helper2, playfield_window, false);
check_collision(0);
*m_blink = false;
}
return 0;
}
uint32_t firetrk_state::screen_update_montecar(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
machine().tilemap().mark_all_dirty();
m_tilemap1->set_scrollx(0, *m_scroll_x - 37);
m_tilemap2->set_scrollx(0, *m_scroll_x - 37);
m_tilemap1->set_scrolly(0, *m_scroll_y);
m_tilemap2->set_scrolly(0, *m_scroll_y);
bitmap.fill(0x2c, cliprect);
m_tilemap1->draw(screen, bitmap, playfield_window, 0, 0);
montecar_draw_car(bitmap, playfield_window, 0, false);
montecar_draw_car(bitmap, playfield_window, 1, false);
draw_text(bitmap, cliprect, m_alpha_num_ram + 0x00, 24, 0x20, 0x08);
draw_text(bitmap, cliprect, m_alpha_num_ram + 0x20, 16, 0x20, 0x08);
if (cliprect.max_y == screen.visible_area().max_y)
{
m_tilemap2->draw(screen, m_helper1, playfield_window, 0, 0);
m_helper2.fill(0xff, playfield_window);
montecar_draw_car(m_helper2, playfield_window, 0, true);
check_collision(0);
m_helper2.fill(0xff, playfield_window);
montecar_draw_car(m_helper2, playfield_window, 1, true);
check_collision(1);
}
return 0;
}