Import blues from 116fbc7a

Makefile

@@ -1,6 +1,6 @@
 
 SDL_CFLAGS := `sdl2-config --cflags`
-SDL_LIBS   := `sdl2-config --libs` -lSDL2_mixer
+SDL_LIBS   := `sdl2-config --libs`
 
 SRCS := decode.c fileio.c game.c level.c main.c opcodes.c resource.c screen.c sound.c staticres.c sys_sdl2.c triggers.c unpack.c util.c
 OBJS := $(SRCS:.c=.o)

decode.c

@@ -6,9 +6,9 @@ void decode_ega_spr(const uint8_t *src, int src_pitch, int w, int h, uint8_t *ds
 	src_pitch /= 8;
 	assert((w & 7) == 0);
 	w /= 8;
+	dst += dst_y * dst_pitch + dst_x;
 	const int bitplane_size = w * h;
 	for (int y = 0; y < h; ++y) {
-		const int y_offset = dst_y + y;
 		for (int x = 0; x < w; ++x) {
 			for (int i = 0; i < 8; ++i) {
 				int color = 0;
@@ -18,14 +18,12 @@ void decode_ega_spr(const uint8_t *src, int src_pitch, int w, int h, uint8_t *ds
 						color |= 1 << (3 - bit);
 					}
 				}
-				if (color != 0) {
+				dst[x * 8 + i] = color;
-					const int x_offset = dst_x + (x * 8 + i);
-					dst[y_offset * dst_pitch + x_offset] = color;
-				}
 			}
 			++src;
 		}
 		src += src_pitch - w;
+		dst += dst_pitch;
 	}
 }
 

fileio.c

@@ -55,8 +55,9 @@ int fio_open(const char *filename, int error_flag) {
 		if (!file_slot->fp) {
 			if (error_flag) {
 				print_error("Unable to open file '%s'", filename);
+			} else {
+				print_warning("Unable to open file '%s'", filename);
 			}
-			print_warning("Unable to open file '%s'", filename);
 			slot = -1;
 		} else {
 			fseek(file_slot->fp, 0, SEEK_END);

game.c

@@ -282,12 +282,12 @@ static void do_inter_screen() {
 }
 
 void game_main() {
+	play_music(0);
 	g_vars.screen_w = GAME_SCREEN_W;
 	g_vars.screen_h = GAME_SCREEN_H;
 	g_vars.screen_draw_offset = 0;
 	screen_flip();
 	screen_init();
-	g_sys.set_screen_size(GAME_SCREEN_W, GAME_SCREEN_H, "Blues Brothers");
 	g_vars.start_level = 0;
 	load_sqv("sprite.sqv", g_res.spr_sqv, 0);
 	if (g_options.amiga_sprites) {
@@ -303,7 +303,7 @@ void game_main() {
 		g_sys.set_palette_amiga(palette, 16);
 	}
 	do_title_screen();
-	while (g_sys.input.quit == 0) {
+	while (!g_sys.input.quit) {
 		if (!g_vars.level_completed_flag) {
 //			_level_cheat_code = 0;
 			g_vars.game_over_flag = 0;
@@ -316,7 +316,7 @@ void game_main() {
 			}
 			screen_unk5();
 		}
-		while (g_sys.input.quit == 0 && g_vars.play_level_flag) {
+		while (!g_sys.input.quit && g_vars.play_level_flag) {
 			if (!g_vars.game_over_flag) {
 				do_inter_screen();
 			}

level.c

@@ -58,16 +58,12 @@ static const struct {
 	{ "concert.blk", "concert.tbl", 0, "concert.bin", "ennemi6" },
 };
 
-static const char *_demo_filenames[] = {
-	"demomag.ck1", "demomag.ck2", "demomag.sql"
-};
-
 void load_level_data(int num) {
 	print_debug(DBG_GAME, "load_level_data num %d", num);
 	if (num == 0 && (g_res.flags & RESOURCE_FLAGS_DEMO)) {
-		load_ck(_demo_filenames[0], 0x6000);
+		load_ck("demomag.ck1", 0x6000);
-		load_ck(_demo_filenames[1], 0x8000);
+		load_ck("demomag.ck2", 0x8000);
-		load_sql(_demo_filenames[2]);
+		load_sql("demomag.sql");
 	} else {
 		load_ck(_levels[num].ck1, 0x6000);
 		load_ck(_levels[num].ck2, 0x8000);
@@ -96,9 +92,18 @@ void load_level_data(int num) {
 }
 
 static void init_level() {
+	static const uint16_t restart_xpos[] = { 720, 720, 912, 912, 336, 352, 288, 304, 960, 976,  64,  80 };
+	static const uint16_t restart_ypos[] = { 496, 496, 752, 752, 816, 816, 304, 304, 592, 592, 352, 352 };
+	if (g_vars.play_demo_flag) {
+		g_vars.objects[OBJECT_NUM_PLAYER1].unk60 = 0;
+	}
 	int xpos = g_options.start_xpos16;
 	if (xpos < 0) {
-		xpos = (g_vars.level_xpos[OBJECT_NUM_PLAYER1] >> 4) - 10;
+		xpos = g_vars.level_xpos[OBJECT_NUM_PLAYER1];
+		if (!g_vars.two_players_flag && (g_vars.objects[OBJECT_NUM_PLAYER1].unk60 || g_vars.objects[OBJECT_NUM_PLAYER2].unk60)) {
+			xpos = restart_xpos[g_vars.level * 2];
+		}
+		xpos = (xpos >> 4) - 10;
 	} else {
 		g_vars.level_xpos[OBJECT_NUM_PLAYER1] = (xpos << 4) + 10;
 	}
@@ -109,7 +114,11 @@ static void init_level() {
 
 	int ypos = g_options.start_ypos16;
 	if (ypos < 0) {
-		ypos = (g_vars.level_ypos[OBJECT_NUM_PLAYER1] >> 4) - 6;
+		ypos = g_vars.level_ypos[OBJECT_NUM_PLAYER1];
+		if (!g_vars.two_players_flag && (g_vars.objects[OBJECT_NUM_PLAYER1].unk60 || g_vars.objects[OBJECT_NUM_PLAYER2].unk60)) {
+			ypos = restart_ypos[g_vars.level * 2];
+		}
+		ypos = (ypos >> 4) - 6;
 	} else {
 		g_vars.level_ypos[OBJECT_NUM_PLAYER1] = (ypos << 4) + 6;
 	}
@@ -158,7 +167,8 @@ static void init_level() {
 				obj->xpos = g_vars.level_xpos[i];
 				obj->ypos = g_vars.level_ypos[i];
 			} else {
-				print_warning("init_level: obj #%d unk60 %d", i, obj->unk60);
+				obj->xpos = restart_xpos[g_vars.level * 2 + obj->type];
+				obj->ypos = restart_ypos[g_vars.level * 2 + obj->type];
 			}
 			print_debug(DBG_GAME, "init_level obj #%d pos %d,%d", i, obj->xpos, obj->ypos);
 		} else {
@@ -2153,9 +2163,9 @@ static void draw_foreground_tiles() {
 }
 
 void do_level() {
-	const int w = TILEMAP_SCREEN_W / 16;
+	static const int W = 320 / 16;
-	for (int i = 0; i < 256; ++i) {
+	for (int tile_num = 0; tile_num < 256; ++tile_num) {
-		g_vars.screen_tile_lut[i] = (i / w) * 640 + (i % w);
+		g_vars.screen_tile_lut[tile_num] = (tile_num / W) * 640 + (tile_num % W);
 	}
 	g_vars.screen_tilemap_w = level_dim[g_vars.level * 2];
 	g_vars.screen_tilemap_h = level_dim[g_vars.level * 2 + 1];
@@ -2174,7 +2184,6 @@ void do_level() {
 	if (g_options.amiga_colors) {
 		g_sys.set_palette_amiga(_colors_data + g_vars.level * 16, 0);
 	}
-	// _time_sync_ptr[1] = 1:
 	g_vars.inp_keyboard[0xB9] = 0; // SPACE
 	g_vars.screen_draw_offset = TILEMAP_OFFSET_Y * 40;
 	g_vars.update_objects_counter = 0;
@@ -2228,7 +2237,7 @@ void do_level() {
 		screen_clear_sprites();
 		// _draw_last_sprite_flag = 1;
 
-	} while (g_sys.input.quit == 0 && !g_vars.quit_level_flag);
+	} while (!g_sys.input.quit && !g_vars.quit_level_flag);
 	g_vars.screen_draw_offset -= TILEMAP_OFFSET_Y * 40;
 	screen_unk5();
 	if (g_options.amiga_copper_bars) {

main.c

@@ -12,6 +12,10 @@ struct options_t g_options;
 
 static const char *DEFAULT_DATA_PATH = ".";
 
+static const int DEFAULT_SCALE_FACTOR = 2;
+
+static const char *DEFAULT_SCALE_FILTER = 0; // nearest pixel sampling
+
 static const char *USAGE =
 	"Usage: %s [OPTIONS]...\n"
 	"  --datapath=PATH   Path to data files (default '.')\n"
@@ -26,6 +30,9 @@ int main(int argc, char *argv[]) {
 	// g_options.amiga_sprites = true;
 	// g_options.amiga_data = true;
 	const char *data_path = DEFAULT_DATA_PATH;
+	int scale_factor = DEFAULT_SCALE_FACTOR;
+	const char *scale_filter = DEFAULT_SCALE_FILTER;
+	bool fullscreen = false;
 	if (argc == 2) {
 		struct stat st;
 		if (stat(argv[1], &st) == 0 && S_ISDIR(st.st_mode)) {
@@ -39,6 +46,9 @@ int main(int argc, char *argv[]) {
 			{ "debug",    required_argument, 0, 3 },
 			{ "cheats",   required_argument, 0, 4 },
 			{ "startpos", required_argument, 0, 5 },
+			{ "fullscreen", no_argument,     0, 6 },
+			{ "scale",    required_argument, 0, 7 },
+			{ "filter",   required_argument, 0, 8 },
 			{ 0, 0, 0, 0 },
 		};
 		int index;
@@ -62,6 +72,15 @@ int main(int argc, char *argv[]) {
 		case 5:
 			sscanf(optarg, "%dx%d", &g_options.start_xpos16, &g_options.start_ypos16);
 			break;
+		case 6:
+			fullscreen = true;
+			break;
+		case 7:
+			scale_factor = atoi(optarg);
+			break;
+		case 8:
+			scale_filter = strdup(optarg);
+			break;
 		default:
 			fprintf(stdout, USAGE, argv[0]);
 			return -1;
@@ -70,6 +89,7 @@ int main(int argc, char *argv[]) {
 	fio_init(data_path);
 	res_init();
 	g_sys.init();
+	g_sys.set_screen_size(GAME_SCREEN_W, GAME_SCREEN_H, "Blues Brothers", scale_factor, scale_filter, fullscreen);
 	sound_init(SYS_AUDIO_FREQ);
 	game_main();
 	sound_fini();

opcodes.c

@@ -300,9 +300,13 @@ static void object_func_op13(struct object_t *obj) {
 	obj->special_anim = 1;
 }
 
+static void object_func_op14_helper(int x1, int y1, int x2, int y2, int color) {
+	print_warning("object_func_op14_helper: unimplemented");
+}
+
 static void object_func_op14(struct object_t *obj) {
 	obj->special_anim = 2;
-	// sub_1AD3B(obj->xpos, level_ypos_egou[obj->unk5D] - _screen_tilemap_yorigin, obj->xpos, obj->ypos - 5, 3);
+	object_func_op14_helper(obj->xpos, level_ypos_egou[obj->unk5D] - g_vars.screen_tilemap_yorigin, obj->xpos, obj->ypos - 5, 3);
 	if (obj->elevator_direction == 1) {
 		if (obj->moving_direction < 25) {
 			++obj->moving_direction;

screen.c

@@ -5,8 +5,8 @@
 #include "sys.h"
 #include "util.h"
 
-#define MAX_SPRITESHEET_W 1024
+#define MAX_SPRITESHEET_W 512
-#define MAX_SPRITESHEET_H  512
+#define MAX_SPRITESHEET_H 512
 
 void screen_init() {
 }
@@ -183,28 +183,24 @@ static void decode_graphics(int spr_type, int start, int end) {
 				}
 				current_x = 0;
 				max_h = h;
-				if (g_options.amiga_sprites) {
-					decode_amiga_planar8(ptr, w / 8, h, (start == 0) ? 3 : 4, data, MAX_SPRITESHEET_W, current_x, current_y);
-				} else {
-					decode_ega_spr(ptr, w, w, h, data, MAX_SPRITESHEET_W, current_x, current_y);
-				}
-				r[j].x = current_x;
-				r[j].y = current_y;
 			} else {
-				if (g_options.amiga_sprites) {
-					decode_amiga_planar8(ptr, w / 8, h, (start == 0) ? 3 : 4, data, MAX_SPRITESHEET_W, current_x, current_y);
-				} else {
-					decode_ega_spr(ptr, w, w, h, data, MAX_SPRITESHEET_W, current_x, current_y);
-				}
-				r[j].x = current_x;
-				r[j].y = current_y;
-				current_x += w;
 				if (h > max_h) {
 					max_h = h;
 				}
 			}
+			if (g_options.amiga_sprites) {
+				decode_amiga_planar8(ptr, w / 8, h, (start == 0) ? 3 : 4, data, MAX_SPRITESHEET_W, current_x, current_y);
+			} else {
+				decode_ega_spr(ptr, w, w, h, data, MAX_SPRITESHEET_W, current_x, current_y);
+			}
+			r[j].x = current_x;
+			r[j].y = current_y;
 			r[j].w = w;
 			r[j].h = h;
+			current_x += w;
+			if (h > max_h) {
+				max_h = h;
+			}
 		}
 		assert(max_w <= MAX_SPRITESHEET_W);
 		assert(current_y + max_h <= MAX_SPRITESHEET_H);

sys.h

@@ -12,13 +12,10 @@
 #define SYS_AUDIO_FREQ 22050
 
 struct input_t {
-	char quit;
+	uint8_t direction;
-	char escape;
+	bool quit;
-	char space;
+	bool escape;
-	char direction;
+	bool space;
-	char functions[12];
-	char digits[10];
-	char alphabet[26];
 };
 
 typedef void (*sys_audio_cb)(void *, uint8_t *data, int len);
@@ -32,7 +29,7 @@ struct sys_t {
 	struct input_t	input;
 	int	(*init)();
 	void	(*fini)();
-	void	(*set_screen_size)(int w, int h, const char *caption);
+	void	(*set_screen_size)(int w, int h, const char *caption, int scale, const char *filter, bool fullscreen);
 	void	(*set_screen_palette)(const uint8_t *colors, int);
 	void	(*set_palette_amiga)(const uint16_t *colors, int offset);
 	void	(*set_copper_bars)(const uint16_t *data);

sys_sdl2.c

@@ -5,7 +5,6 @@
 
 #define COPPER_BARS_H 80
 
-static const int SCALE = 2;
 static const int FADE_STEPS = 16;
 
 struct spritesheet_t {
@@ -37,9 +36,10 @@ static uint32_t *_screen_buffer;
 static struct input_t *_input = &g_sys.input;
 static int _copper_color;
 static uint32_t _copper_palette[COPPER_BARS_H];
+static SDL_GameController *_controller;
 
 static int sdl2_init() {
-	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
+	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER);
 	SDL_ShowCursor(SDL_DISABLE);
 	_screen_w = _screen_h = 0;
 	_window = 0;
@@ -49,10 +49,32 @@ static int sdl2_init() {
 	memset(_screen_palette, 0, sizeof(_screen_palette));
 	_screen_buffer = 0;
 	_copper_color = -1;
+	SDL_GameControllerAddMappingsFromFile("gamecontrollerdb.txt");
+	_controller = 0;
+	const int count = SDL_NumJoysticks();
+	if (count > 0) {
+		for (int i = 0; i < count; ++i) {
+			if (SDL_IsGameController(i)) {
+				_controller = SDL_GameControllerOpen(i);
+				if (_controller) {
+					fprintf(stdout, "Using controller '%s'\n", SDL_GameControllerName(_controller));
+					break;
+				}
+			}
+		}
+	}
 	return 0;
 }
 
 static void sdl2_fini() {
+	if (_fmt) {
+		SDL_FreeFormat(_fmt);
+		_fmt = 0;
+	}
+	if (_texture) {
+		SDL_DestroyTexture(_texture);
+		_texture = 0;
+	}
 	if (_renderer) {
 		SDL_DestroyRenderer(_renderer);
 		_renderer = 0;
@@ -61,27 +83,31 @@ static void sdl2_fini() {
 		SDL_DestroyWindow(_window);
 		_window = 0;
 	}
-	if (_texture) {
-		SDL_DestroyTexture(_texture);
-		_texture = 0;
-	}
-	if (_fmt) {
-		SDL_FreeFormat(_fmt);
-		_fmt = 0;
-	}
 	free(_screen_buffer);
+	if (_controller) {
+		SDL_GameControllerClose(_controller);
+		_controller = 0;
+	}
 	SDL_Quit();
 }
 
-static void sdl2_set_screen_size(int w, int h, const char *caption) {
+static void sdl2_set_screen_size(int w, int h, const char *caption, int scale, const char *filter, bool fullscreen) {
 	assert(_screen_w == 0 && _screen_h == 0); // abort if called more than once
 	_screen_w = w;
 	_screen_h = h;
-	SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0"); /* nearest pixel sampling */
+	if (!filter || strcmp(filter, "nearest") == 0) {
-	const int window_w = w * SCALE;
+		SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "0");
-	const int window_h = h * SCALE; // * 4 / 3;
+	} else if (strcmp(filter, "linear") == 0) {
-	_window = SDL_CreateWindow(caption, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, window_w, window_h, SDL_WINDOW_RESIZABLE);
+		SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "1");
+	} else {
+		print_warning("Unhandled filter '%s'", filter);
+	}
+	const int window_w = w * scale;
+	const int window_h = h * scale;
+	const int flags = fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : SDL_WINDOW_RESIZABLE;
+	_window = SDL_CreateWindow(caption, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, window_w, window_h, flags);
 	_renderer = SDL_CreateRenderer(_window, -1, 0);
+	SDL_RenderSetLogicalSize(_renderer, w, h);
 	print_debug(DBG_SYSTEM, "set_screen_size %d,%d", _screen_w, _screen_h);
 	_screen_buffer = (uint32_t *)calloc(_screen_w * _screen_h, sizeof(uint32_t));
 	if (!_screen_buffer) {
@@ -190,10 +216,10 @@ static void sdl2_update_screen(const uint8_t *p, int present) {
 			struct sprite_t *spr = &_sprites[i];
 			struct spritesheet_t *sheet = &_spritesheets[spr->sheet];
 			SDL_Rect r;
-			r.x = spr->x * SCALE;
+			r.x = spr->x;
-			r.y = spr->y * SCALE;
+			r.y = spr->y;
-			r.w = sheet->r[spr->num].w * SCALE;
+			r.w = sheet->r[spr->num].w;
-			r.h = sheet->r[spr->num].h * SCALE;
+			r.h = sheet->r[spr->num].h;
 			if (!spr->xflip) {
 				SDL_RenderCopy(_renderer, sheet->texture, &sheet->r[spr->num], &r);
 			} else {
@@ -205,7 +231,7 @@ static void sdl2_update_screen(const uint8_t *p, int present) {
 	}
 }
 
-static void handle_keyevent(int keysym, int keydown) {
+static void handle_keyevent(int keysym, bool keydown) {
 	switch (keysym) {
 	case SDLK_LEFT:
 		if (keydown) {
@@ -239,6 +265,85 @@ static void handle_keyevent(int keysym, int keydown) {
 	case SDLK_SPACE:
 		_input->space = keydown;
 		break;
+	case SDLK_ESCAPE:
+		_input->escape = keydown;
+		break;
+	}
+}
+
+static void handle_controlleraxis(int axis, int value) {
+	static const int THRESHOLD = 3200;
+	switch (axis) {
+	case SDL_CONTROLLER_AXIS_LEFTX:
+	case SDL_CONTROLLER_AXIS_RIGHTX:
+		if (value < -THRESHOLD) {
+			_input->direction |= INPUT_DIRECTION_LEFT;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_LEFT;
+		}
+		if (value > THRESHOLD) {
+			_input->direction |= INPUT_DIRECTION_RIGHT;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_RIGHT;
+		}
+		break;
+	case SDL_CONTROLLER_AXIS_LEFTY:
+	case SDL_CONTROLLER_AXIS_RIGHTY:
+		if (value < -THRESHOLD) {
+			_input->direction |= INPUT_DIRECTION_UP;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_UP;
+		}
+		if (value > THRESHOLD) {
+			_input->direction |= INPUT_DIRECTION_DOWN;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_DOWN;
+		}
+		break;
+	}
+}
+
+static void handle_controllerbutton(int button, bool pressed) {
+	switch (button) {
+	case SDL_CONTROLLER_BUTTON_A:
+	case SDL_CONTROLLER_BUTTON_B:
+	case SDL_CONTROLLER_BUTTON_X:
+	case SDL_CONTROLLER_BUTTON_Y:
+		_input->space = pressed;
+		break;
+	case SDL_CONTROLLER_BUTTON_BACK:
+		_input->escape = pressed;
+		break;
+	case SDL_CONTROLLER_BUTTON_START:
+		break;
+	case SDL_CONTROLLER_BUTTON_DPAD_UP:
+		if (pressed) {
+			_input->direction |= INPUT_DIRECTION_UP;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_UP;
+		}
+		break;
+	case SDL_CONTROLLER_BUTTON_DPAD_DOWN:
+		if (pressed) {
+			_input->direction |= INPUT_DIRECTION_DOWN;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_DOWN;
+		}
+		break;
+	case SDL_CONTROLLER_BUTTON_DPAD_LEFT:
+		if (pressed) {
+			_input->direction |= INPUT_DIRECTION_LEFT;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_LEFT;
+		}
+		break;
+	case SDL_CONTROLLER_BUTTON_DPAD_RIGHT:
+		if (pressed) {
+			_input->direction |= INPUT_DIRECTION_RIGHT;
+		} else {
+			_input->direction &= ~INPUT_DIRECTION_RIGHT;
+		}
+		break;
 	}
 }
 
@@ -253,6 +358,36 @@ static int handle_event(const SDL_Event *ev) {
 	case SDL_KEYDOWN:
 		handle_keyevent(ev->key.keysym.sym, 1);
 		break;
+	case SDL_CONTROLLERDEVICEADDED:
+		if (!_controller) {
+			_controller = SDL_GameControllerOpen(ev->cdevice.which);
+			if (_controller) {
+				fprintf(stdout, "Using controller '%s'\n", SDL_GameControllerName(_controller));
+			}
+		}
+		break;
+	case SDL_CONTROLLERDEVICEREMOVED:
+		if (_controller == SDL_GameControllerFromInstanceID(ev->cdevice.which)) {
+			fprintf(stdout, "Removed controller '%s'\n", SDL_GameControllerName(_controller));
+			SDL_GameControllerClose(_controller);
+			_controller = 0;
+		}
+		break;
+	case SDL_CONTROLLERBUTTONUP:
+		if (_controller) {
+			handle_controllerbutton(ev->cbutton.button, 0);
+		}
+		break;
+	case SDL_CONTROLLERBUTTONDOWN:
+		if (_controller) {
+			handle_controllerbutton(ev->cbutton.button, 1);
+		}
+		break;
+	case SDL_CONTROLLERAXISMOTION:
+		if (_controller) {
+			handle_controlleraxis(ev->caxis.axis, ev->caxis.value);
+		}
+		break;
 	default:
 		return -1;
 	}