/*************************************************************************** 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( firetrk ) { firetrk_state *state = machine.driver_data(); int i; static const UINT8 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_BLACK, MAKE_RGB(0x5b, 0x5b, 0x5b), MAKE_RGB(0xa4, 0xa4, 0xa4), RGB_WHITE }; state->m_color1_mask = state->m_color2_mask = 0; for (i = 0; i < ARRAY_LENGTH(colortable_source); i++) { UINT8 color = colortable_source[i]; if (color == 1) state->m_color1_mask |= 1 << i; else if (color == 2) state->m_color2_mask |= 1 << i; palette_set_color(machine, i, palette_source[color]); } } static void prom_to_palette(running_machine &machine, int number, UINT8 val) { palette_set_color(machine, number, MAKE_RGB(pal1bit(val >> 2), pal1bit(val >> 1), pal1bit(val >> 0))); } PALETTE_INIT( montecar ) { firetrk_state *state = machine.driver_data(); int i; static const UINT8 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. * */ state->m_color1_mask = state->m_color2_mask = 0; for (i = 0; i < ARRAY_LENGTH(colortable_source); i++) { UINT8 color = colortable_source[i]; if (color == 1) state->m_color1_mask |= 1 << i; else if (color == 2) state->m_color2_mask |= 1 << i; prom_to_palette(machine, i, color_prom[0x100 + colortable_source[i]]); } palette_set_color(machine, ARRAY_LENGTH(colortable_source) + 0, RGB_BLACK); palette_set_color(machine, ARRAY_LENGTH(colortable_source) + 1, RGB_WHITE); } static TILE_GET_INFO( firetrk_get_tile_info1 ) { firetrk_state *state = machine.driver_data(); int code = state->m_playfield_ram[tile_index] & 0x3f; int color = (state->m_playfield_ram[tile_index] >> 6) & 0x03; if (*state->m_blink && (code >= 0x04) && (code <= 0x0b)) color = 0; if (state->m_flash) color = color | 0x04; SET_TILE_INFO(1, code, color, 0); } static TILE_GET_INFO( superbug_get_tile_info1 ) { firetrk_state *state = machine.driver_data(); int code = state->m_playfield_ram[tile_index] & 0x3f; int color = (state->m_playfield_ram[tile_index] >> 6) & 0x03; if (*state->m_blink && (code >= 0x08) && (code <= 0x0f)) color = 0; if (state->m_flash) color = color | 0x04; SET_TILE_INFO(1, code, color, 0); } static TILE_GET_INFO( montecar_get_tile_info1 ) { firetrk_state *state = machine.driver_data(); int code = state->m_playfield_ram[tile_index] & 0x3f; int color = (state->m_playfield_ram[tile_index] >> 6) & 0x03; if (state->m_flash) color = color | 0x04; SET_TILE_INFO(1, code, color, 0); } static TILE_GET_INFO( firetrk_get_tile_info2 ) { firetrk_state *state = machine.driver_data(); UINT8 code = state->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(2, code, color, 0); } static TILE_GET_INFO( superbug_get_tile_info2 ) { firetrk_state *state = machine.driver_data(); UINT8 code = state->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(2, code, color, 0); } static TILE_GET_INFO( montecar_get_tile_info2 ) { firetrk_state *state = machine.driver_data(); UINT8 code = state->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(2, code & 0x3f, color, 0); } VIDEO_START( firetrk ) { firetrk_state *state = machine.driver_data(); state->m_helper1 = machine.primary_screen->alloc_compatible_bitmap(); state->m_helper2 = machine.primary_screen->alloc_compatible_bitmap(); state->m_tilemap1 = tilemap_create(machine, firetrk_get_tile_info1, tilemap_scan_rows, 16, 16, 16, 16); state->m_tilemap2 = tilemap_create(machine, firetrk_get_tile_info2, tilemap_scan_rows, 16, 16, 16, 16); } VIDEO_START( superbug ) { firetrk_state *state = machine.driver_data(); state->m_helper1 = machine.primary_screen->alloc_compatible_bitmap(); state->m_helper2 = machine.primary_screen->alloc_compatible_bitmap(); state->m_tilemap1 = tilemap_create(machine, superbug_get_tile_info1, tilemap_scan_rows, 16, 16, 16, 16); state->m_tilemap2 = tilemap_create(machine, superbug_get_tile_info2, tilemap_scan_rows, 16, 16, 16, 16); } VIDEO_START( montecar ) { firetrk_state *state = machine.driver_data(); state->m_helper1 = machine.primary_screen->alloc_compatible_bitmap(); state->m_helper2 = machine.primary_screen->alloc_compatible_bitmap(); state->m_tilemap1 = tilemap_create(machine, montecar_get_tile_info1, tilemap_scan_rows, 16, 16, 16, 16); state->m_tilemap2 = tilemap_create(machine, montecar_get_tile_info2, tilemap_scan_rows, 16, 16, 16, 16); } static void firetrk_draw_car(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, gfx_element **gfx, int which, int flash) { firetrk_state *state = machine.driver_data(); int gfx_bank, code, color, flip_x, flip_y, x, y; if (which) { gfx_bank = 5; code = *state->m_drone_rot & 0x07; color = flash ? 1 : 0; flip_x = *state->m_drone_rot & 0x08; flip_y = *state->m_drone_rot & 0x10; x = (flip_x ? *state->m_drone_x - 63 : 192 - *state->m_drone_x) + 36; y = flip_y ? *state->m_drone_y - 63 : 192 - *state->m_drone_y; } else { gfx_bank = (*state->m_car_rot & 0x10) ? 4 : 3; code = *state->m_car_rot & 0x03; color = flash ? 1 : 0; flip_x = *state->m_car_rot & 0x04; flip_y = *state->m_car_rot & 0x08; x = 144; y = 104; } drawgfx_transpen(bitmap, cliprect, gfx[gfx_bank], code, color, flip_x, flip_y, x, y, 0); } static void superbug_draw_car(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, gfx_element **gfx, int flash) { firetrk_state *state = machine.driver_data(); int gfx_bank = (*state->m_car_rot & 0x10) ? 4 : 3; int code = ~*state->m_car_rot & 0x03; int color = flash ? 1 : 0; int flip_x = *state->m_car_rot & 0x04; int flip_y = *state->m_car_rot & 0x08; drawgfx_transpen(bitmap, cliprect, gfx[gfx_bank], code, color, flip_x, flip_y, 144, 104, 0); } static void montecar_draw_car(running_machine &machine, bitmap_t *bitmap, const rectangle *cliprect, gfx_element **gfx, int which, int is_collision_detection) { firetrk_state *state = machine.driver_data(); int gfx_bank, code, color, flip_x, flip_y, x, y; if (which) { gfx_bank = 4; code = *state->m_drone_rot & 0x07; color = is_collision_detection ? 0 : (((*state->m_car_rot & 0x80) >> 6) | ((*state->m_drone_rot & 0x80) >> 7)); flip_x = *state->m_drone_rot & 0x10; flip_y = *state->m_drone_rot & 0x08; x = (flip_x ? *state->m_drone_x - 31 : 224 - *state->m_drone_x) + 34; y = flip_y ? *state->m_drone_y - 31 : 224 - *state->m_drone_y; } else { gfx_bank = 3; code = *state->m_car_rot & 0x07; color = 0; flip_x = *state->m_car_rot & 0x10; flip_y = *state->m_car_rot & 0x08; x = 144; y = 104; } drawgfx_transpen(bitmap, cliprect, gfx[gfx_bank], code, color, flip_x, flip_y, x, y, 0); } static void draw_text(bitmap_t *bitmap, const rectangle *cliprect, gfx_element **gfx, UINT8 *alpha_ram, int x, int count, int height) { int i; for (i = 0; i < count; i++) drawgfx_opaque(bitmap, cliprect, gfx[0], alpha_ram[i], 0, 0, 0, x, i * height); } static void check_collision(firetrk_state *state, 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 = *BITMAP_ADDR16(state->m_helper1, y, x); pen_t b = *BITMAP_ADDR16(state->m_helper2, y, x); if (b != 0xff && (state->m_color1_mask >> a) & 1) state->m_crash[which] = 1; if (b != 0xff && (state->m_color2_mask >> a) & 1) state->m_skid[which] = 1; } } SCREEN_UPDATE( firetrk ) { firetrk_state *state = screen->machine().driver_data(); tilemap_mark_all_tiles_dirty_all(screen->machine()); tilemap_set_scrollx(state->m_tilemap1, 0, *state->m_scroll_x - 37); tilemap_set_scrollx(state->m_tilemap2, 0, *state->m_scroll_x - 37); tilemap_set_scrolly(state->m_tilemap1, 0, *state->m_scroll_y); tilemap_set_scrolly(state->m_tilemap2, 0, *state->m_scroll_y); bitmap_fill(bitmap, cliprect, 0); tilemap_draw(bitmap, &playfield_window, state->m_tilemap1, 0, 0); firetrk_draw_car(screen->machine(), bitmap, &playfield_window, screen->machine().gfx, 0, state->m_flash); firetrk_draw_car(screen->machine(), bitmap, &playfield_window, screen->machine().gfx, 1, state->m_flash); draw_text(bitmap, cliprect, screen->machine().gfx, state->m_alpha_num_ram + 0x00, 296, 0x10, 0x10); draw_text(bitmap, cliprect, screen->machine().gfx, state->m_alpha_num_ram + 0x10, 8, 0x10, 0x10); if (cliprect->max_y == screen->visible_area().max_y) { tilemap_draw(state->m_helper1, &playfield_window, state->m_tilemap2, 0, 0); bitmap_fill(state->m_helper2, &playfield_window, 0xff); firetrk_draw_car(screen->machine(), state->m_helper2, &playfield_window, screen->machine().gfx, 0, FALSE); check_collision(state, 0); bitmap_fill(state->m_helper2, &playfield_window, 0xff); firetrk_draw_car(screen->machine(), state->m_helper2, &playfield_window, screen->machine().gfx, 1, FALSE); check_collision(state, 1); *state->m_blink = FALSE; } return 0; } SCREEN_UPDATE( superbug ) { firetrk_state *state = screen->machine().driver_data(); tilemap_mark_all_tiles_dirty_all(screen->machine()); tilemap_set_scrollx(state->m_tilemap1, 0, *state->m_scroll_x - 37); tilemap_set_scrollx(state->m_tilemap2, 0, *state->m_scroll_x - 37); tilemap_set_scrolly(state->m_tilemap1, 0, *state->m_scroll_y); tilemap_set_scrolly(state->m_tilemap2, 0, *state->m_scroll_y); bitmap_fill(bitmap, cliprect, 0); tilemap_draw(bitmap, &playfield_window, state->m_tilemap1, 0, 0); superbug_draw_car(screen->machine(), bitmap, &playfield_window, screen->machine().gfx, state->m_flash); draw_text(bitmap, cliprect, screen->machine().gfx, state->m_alpha_num_ram + 0x00, 296, 0x10, 0x10); draw_text(bitmap, cliprect, screen->machine().gfx, state->m_alpha_num_ram + 0x10, 8, 0x10, 0x10); if (cliprect->max_y == screen->visible_area().max_y) { tilemap_draw(state->m_helper1, &playfield_window, state->m_tilemap2, 0, 0); bitmap_fill(state->m_helper2, &playfield_window, 0xff); superbug_draw_car(screen->machine(), state->m_helper2, &playfield_window, screen->machine().gfx, FALSE); check_collision(state, 0); *state->m_blink = FALSE; } return 0; } SCREEN_UPDATE( montecar ) { firetrk_state *state = screen->machine().driver_data(); tilemap_mark_all_tiles_dirty_all(screen->machine()); tilemap_set_scrollx(state->m_tilemap1, 0, *state->m_scroll_x - 37); tilemap_set_scrollx(state->m_tilemap2, 0, *state->m_scroll_x - 37); tilemap_set_scrolly(state->m_tilemap1, 0, *state->m_scroll_y); tilemap_set_scrolly(state->m_tilemap2, 0, *state->m_scroll_y); bitmap_fill(bitmap, cliprect, 0x2c); tilemap_draw(bitmap, &playfield_window, state->m_tilemap1, 0, 0); montecar_draw_car(screen->machine(), bitmap, &playfield_window, screen->machine().gfx, 0, FALSE); montecar_draw_car(screen->machine(), bitmap, &playfield_window, screen->machine().gfx, 1, FALSE); draw_text(bitmap, cliprect, screen->machine().gfx, state->m_alpha_num_ram + 0x00, 24, 0x20, 0x08); draw_text(bitmap, cliprect, screen->machine().gfx, state->m_alpha_num_ram + 0x20, 16, 0x20, 0x08); if (cliprect->max_y == screen->visible_area().max_y) { tilemap_draw(state->m_helper1, &playfield_window, state->m_tilemap2, 0, 0); bitmap_fill(state->m_helper2, &playfield_window, 0xff); montecar_draw_car(screen->machine(), state->m_helper2, &playfield_window, screen->machine().gfx, 0, TRUE); check_collision(state, 0); bitmap_fill(state->m_helper2, &playfield_window, 0xff); montecar_draw_car(screen->machine(), state->m_helper2, &playfield_window, screen->machine().gfx, 1, TRUE); check_collision(state, 1); } return 0; }