Import blues from c1e25536

2022-03-13 06:41:23 +08:00 · 2022-03-13 06:41:23 +08:00 · 9d70ca5872
parent 140c6cdb1e
commit 9d70ca5872
22 changed files with 635 additions and 209 deletions
--- a/README.md
+++ b/README.md
@ -37,11 +37,11 @@ The data files of the DOS version, full game or [demo](http://cd.textfiles.com/c

 ## Changes

-Compared to the original DOS executables, the rewritten engines feature :
+Compared to the original DOS executables, the rewritten engines feature:

 - horizontal scrolling
 - configurable screen size
- game cheats : unlimited lifes and energy, no hit
+- game cheats: unlimited lifes and energy, no hit


 ## Running
@ -66,4 +66,4 @@ Usage: blues [OPTIONS]...

 ## Downloads

-[blues-sdl2-win32.zip](https://www.dropbox.com/s/vv8mh0vrk8l6xro/blues-gh-sdl2-win32.zip?dl=0) - Win32 executable
+[blues-sdl2-win32.zip](https://www.dropbox.com/s/rybnnn4s3rmicva/blues-gh-sdl2-win32.zip?dl=0) - Win32 executable
--- a/bb/game.c
+++ b/bb/game.c
@ -23,12 +23,12 @@ struct vars_t g_vars;

 void update_input() {
 	g_sys.process_events();
-	g_vars.inp_key_left = ((g_sys.input.direction & INPUT_DIRECTION_LEFT) != 0) || g_vars.inp_keyboard[0x4B] || g_vars.inp_keyboard[0x7A];
-	g_vars.inp_key_right = ((g_sys.input.direction & INPUT_DIRECTION_RIGHT) != 0) || g_vars.inp_keyboard[0x4D] || g_vars.inp_keyboard[0x79];
-	g_vars.inp_key_up = ((g_sys.input.direction & INPUT_DIRECTION_UP) != 0) || g_vars.inp_keyboard[0x48] || g_vars.inp_keyboard[0x7C];
-	g_vars.inp_key_down = ((g_sys.input.direction & INPUT_DIRECTION_DOWN) != 0) || g_vars.inp_keyboard[0x50] || g_vars.inp_keyboard[0x7B];
-	g_vars.inp_key_space = g_sys.input.space || g_vars.inp_keyboard[0x39] || g_vars.inp_keyboard[0x77];
-	// g_vars.inp_key_tab = g_vars.inp_keyboard[0xF] || g_vars.inp_keyboard[0x78];
+	g_vars.inp_key_left  = ((g_sys.input.direction & INPUT_DIRECTION_LEFT) != 0);
+	g_vars.inp_key_right = ((g_sys.input.direction & INPUT_DIRECTION_RIGHT) != 0);
+	g_vars.inp_key_up    = ((g_sys.input.direction & INPUT_DIRECTION_UP) != 0);
+	g_vars.inp_key_down  = ((g_sys.input.direction & INPUT_DIRECTION_DOWN) != 0);
+	g_vars.inp_key_space = g_sys.input.space;
+	g_vars.inp_key_jump  = g_sys.input.jump;
 }

 static void do_title_screen() {
@ -78,8 +78,8 @@ static void do_select_player() {
 	if (g_res.spr_count <= SPRITES_COUNT) {
 		screen_load_graphics(g_options.cga_colors ? g_res.cga_lut_sqv : 0, 0);
 	}
-	screen_clear_sprites();
 	do {
+		screen_clear_sprites(1);
 		update_input();
 		const uint32_t timestamp = g_sys.get_timestamp();
 		switch (state) {
@ -205,11 +205,10 @@ static void do_select_player() {
 			}
 			continue;
 		}
-		screen_flip();
+		g_sys.update_screen();
 		screen_vsync();
 		const int diff = (timestamp + (1000 / 30)) - g_sys.get_timestamp();
 		g_sys.sleep(diff < 10 ? 10 : diff);
-		screen_clear_sprites();
 		if (g_sys.input.space || g_vars.play_demo_flag) {
 			quit = 1;
 		}
@ -222,14 +221,14 @@ static void do_inter_screen_helper(int xpos, int ypos, int c) {
 		if (c != 0) {
 			screen_vsync();
 		}
-		screen_clear_sprites();
+		screen_clear_sprites(1);
 	}
 	for (int i = 0; i < 40; ++i) {
 		screen_add_sprite(xpos - 20 + 1 + i, ypos - 20 + 1 + i, 125);
 		if (c != 0) {
 			screen_vsync();
 		}
-		screen_clear_sprites();
+		screen_clear_sprites(1);
 	}
 }

@ -237,7 +236,7 @@ static void do_inter_screen() {
 	static const uint8_t xpos[] = { 0xFA, 0x50, 0xF0, 0xC8, 0x50, 0x50 };
 	static const uint8_t ypos[] = { 0xAA, 0x37, 0x28, 0x5F, 0xA5, 0xAA };
 	load_img(g_res.amiga_data ? "inter.lbm" : "inter.sqz", GAME_SCREEN_W, g_options.cga_colors ? 9 : -1);
-	screen_clear_sprites();
+	screen_clear_sprites(1);
 	if (g_vars.level > 1) {
 		for (int i = 0; i < g_vars.level - 1; ++i) {
 			do_inter_screen_helper(xpos[i], ypos[i], 0);
@ -251,12 +250,12 @@ static void do_inter_screen() {
 		do_inter_screen_helper(xpos[g_vars.level - 1], ypos[g_vars.level - 1], 1);
 	}
 	// screen_do_transition2();
-	screen_flip();
+	g_sys.update_screen();
 	if (g_vars.level < MAX_LEVELS - 1) {
 		play_sound(SOUND_2);
 		screen_add_sprite(xpos[g_vars.level], ypos[g_vars.level], 126);
 	}
-	screen_flip();
+	g_sys.update_screen();
 	const uint32_t timestamp = g_sys.get_timestamp() + 4 * 1000;
 	do {
 		update_input();
@ -270,7 +269,6 @@ static void do_inter_screen() {
 void game_main() {
 	play_music(0);
 	screen_init();
-	screen_flip();
 	g_vars.start_level = 0;
 	if (g_res.amiga_data) {
 		load_spr("sprite", g_res.spr_sqv, 0);
--- a/bb/game.h
+++ b/bb/game.h
@ -152,15 +152,16 @@ struct vars_t {
 	bool two_players_flag;
 	bool switch_player_scrolling_flag;
 	int music_num;
-	uint8_t inp_keyboard[256];
+	bool inp_key_jump;
+	bool inp_key_jump_prev;
 	bool inp_key_space;
+	bool inp_key_space_prev;
 	bool inp_key_up;
+	bool inp_key_up_prev;
 	bool inp_key_down;
+	bool inp_key_down_prev;
 	bool inp_key_right;
 	bool inp_key_left;
-	bool inp_key_up_prev;
-	bool inp_key_down_prev;
-	bool inp_key_space_prev;
 	struct door_t doors[MAX_DOORS];
 	struct object_t objects[MAX_OBJECTS];
 	int vinyls_count;
@ -219,13 +220,12 @@ extern void	level_call_object_func(struct object_t *);

 /* screen.c */
 extern void	screen_init();
-extern void	screen_clear_sprites();
+extern void	screen_clear_sprites(int pos_flag);
 extern void	screen_add_sprite(int x, int y, int frame);
 extern void	fade_out_palette();
 extern void	screen_adjust_palette_color(int color, int b, int c);
 extern void	screen_vsync();
 extern void	screen_draw_frame(const uint8_t *frame, int fh, int fw, int x, int y);
-extern void	screen_flip();
 extern void	screen_unk5();
 extern void	screen_do_transition1(int a);
 extern void	screen_do_transition2();
--- a/bb/level.c
+++ b/bb/level.c
@ -1162,7 +1162,8 @@ void do_level_enter_door(struct object_t *obj) {
 			if (g_vars.two_players_flag) {
 				do_level_update_panel_2nd_player();
 			}
-			screen_flip();
+			g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
+			g_sys.update_screen();
 			screen_do_transition1(1);
 			obj->unk3D = 0;
 			obj->sprite_type = 0;
@ -1224,9 +1225,9 @@ static void do_level_update_input(struct object_t *obj) {
 		obj->direction_lr |= OBJECT_DIRECTION_LEFT;
 	}
 	_si = triggers_get_tile_type(obj->xpos16, obj->ypos16);
-	if (g_vars.inp_key_up && !g_vars.inp_key_space) {
+	if ((g_options.jump_button ? g_vars.inp_key_jump : g_vars.inp_key_up) && !g_vars.inp_key_space) {
 		obj->direction_ud = OBJECT_DIRECTION_UP;
-		if (!g_vars.inp_key_up_prev && obj->sprite_type != 0) {
+		if ((g_options.jump_button ? !g_vars.inp_key_jump_prev : !g_vars.inp_key_up_prev) && obj->sprite_type != 0) {
 			obj->yfriction = 0;
 			_di = triggers_get_tile_type(obj->xpos16, obj->ypos16 - 2);
 			if (_di == 10 && (_si == 0 || _si == 1)) {
@ -1255,6 +1256,7 @@ static void do_level_update_input(struct object_t *obj) {
 	}
 	g_vars.inp_key_up_prev = g_vars.inp_key_up;
 	g_vars.inp_key_down_prev = g_vars.inp_key_down;
+	g_vars.inp_key_jump_prev = g_vars.inp_key_jump;
 	if (obj->grab_state == 0) {
 		if (obj->carry_crate_flag != 0 && _si == 5) { // crate
 			obj->grab_type = 0;
@ -1301,12 +1303,10 @@ static void do_level_update_scrolling(struct object_t *obj) {
 		if ((g_vars.screen_scrolling_dirmask & 2) != 0 && obj->screen_xpos < TILEMAP_SCREEN_W / 2) {
 			g_vars.screen_scrolling_dirmask &= ~2;
 			g_vars.switch_player_scrolling_flag = 0;
-			g_vars.inp_keyboard[0xC1] = 0;
 		}
 		if ((g_vars.screen_scrolling_dirmask & 1) != 0 && obj->screen_xpos > TILEMAP_SCREEN_W / 2) {
 			g_vars.screen_scrolling_dirmask &= ~1;
 			g_vars.switch_player_scrolling_flag = 0;
-			g_vars.inp_keyboard[0xC1] = 0;
 		}
 	} else {
 		int _si = (obj->xvelocity >> 3) + obj->unk1C;
@ -1871,18 +1871,6 @@ static void do_level_update_objects() {
 		obj->direction_lr = 0;
 		obj->direction_ud = 0;
 		if (obj->type < 2) {
-			if (g_vars.inp_keyboard[0xC1] != 0) { // F7, change player
-				if (!g_vars.switch_player_scrolling_flag && g_vars.two_players_flag) {
-					if (!g_vars.player2_scrolling_flag && !g_vars.objects[OBJECT_NUM_PLAYER1].scrolling_lock_flag) {
-						g_vars.player2_scrolling_flag = 1;
-						g_vars.switch_player_scrolling_flag = 1;
-					} else if (g_vars.player2_scrolling_flag && !g_vars.objects[OBJECT_NUM_PLAYER2].scrolling_lock_flag) {
-						g_vars.player2_scrolling_flag = 1;
-						g_vars.switch_player_scrolling_flag = 1;
-					}
-				}
-				g_vars.inp_keyboard[0xC1] = 0;
-			}
 			if (obj->blinking_counter != 0) {
 				--obj->blinking_counter;
 			}
@ -2099,7 +2087,7 @@ void do_level() {
 	if (g_options.amiga_copper_bars) {
 		g_sys.set_copper_bars(_copper_data + g_vars.level * 18);
 	}
-	g_vars.inp_keyboard[0xB9] = 0; // SPACE
+	// g_vars.inp_keyboard[0xB9] = 0; // SPACE
 	// g_vars.screen_draw_offset = TILEMAP_OFFSET_Y * 40;
 	g_vars.update_objects_counter = 0;
 	g_vars.game_over_flag = 0;
@ -2110,25 +2098,9 @@ void do_level() {
 	g_sys.render_set_sprites_clipping_rect(0, TILEMAP_OFFSET_Y, TILEMAP_SCREEN_W, TILEMAP_SCREEN_H);
 	bool screen_transition_flag = true;
 	do {
+		screen_clear_sprites(0);
 		const uint32_t timestamp = g_sys.get_timestamp();
 		update_input();
-		if (g_vars.inp_keyboard[0xBF] != 0) { // F5, quit game
-			play_sound(SOUND_0);
-			g_vars.inp_keyboard[0xBF] = 0;
-			g_vars.quit_level_flag = 1;
-			g_vars.play_level_flag = 0;
-			g_vars.objects[OBJECT_NUM_PLAYER1].unk60 = 0;
-			g_vars.objects[OBJECT_NUM_PLAYER2].unk60 = 0;
-			g_vars.objects[OBJECT_NUM_PLAYER1].data5F = 0;
-			g_vars.objects[OBJECT_NUM_PLAYER2].data5F = 0;
-			if (!g_vars.play_demo_flag) {
-				g_vars.start_level = 0;
-			}
-		} else if (g_vars.inp_keyboard[0xC4] != 0) { // F10
-			play_sound(SOUND_0);
-			while (g_vars.inp_keyboard[0xC4] != 0 && g_vars.inp_keyboard[0xB] == 0);
-			while (g_vars.inp_keyboard[0xC4] != 0 && g_vars.inp_keyboard[0xB] != 0);
-		}
 		// demo
 		do_level_update_scrolling2();
 		do_level_update_objects();
@ -2138,18 +2110,17 @@ void do_level() {
 		++g_vars.level_loop_counter;
 		draw_level_panel();

+		g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
 		if (screen_transition_flag) {
 			screen_transition_flag = false;
-			g_sys.update_screen(g_res.vga, 0);
 			screen_do_transition2();
 		} else {
-			g_sys.update_screen(g_res.vga, 1);
+			g_sys.update_screen();
 		}
 		memset(g_res.vga, 0, GAME_SCREEN_W * GAME_SCREEN_H);

 		const int diff = (timestamp + (1000 / 30)) - g_sys.get_timestamp();
 		g_sys.sleep(diff < 10 ? 10 : diff);
-		screen_clear_sprites();

 	} while (!g_sys.input.quit && !g_vars.quit_level_flag);
 	// g_vars.screen_draw_offset -= TILEMAP_OFFSET_Y * 40;
@ -2158,5 +2129,4 @@ void do_level() {
 		g_sys.set_copper_bars(0);
 	}
 	g_sys.render_set_sprites_clipping_rect(0, 0, GAME_SCREEN_W, GAME_SCREEN_H);
-	g_vars.inp_keyboard[0xBF] = 0;
 }
--- a/bb/resource.c
+++ b/bb/resource.c
@ -314,11 +314,11 @@ void load_img(const char *filename, int screen_w, int dither_pattern) {
 		size = read_compressed_file(filename, g_res.tmp);
 	}
 	assert(size <= 32000);
-	load_iff(g_res.tmp, size, g_res.vga, screen_w, dither_pattern);
+	load_iff(g_res.tmp, size, g_res.vga, 320, dither_pattern);
+	g_sys.copy_bitmap(g_res.vga, 320, 200);
 	if (dither_pattern < 0) {
 		g_sys.set_screen_palette(g_res.palette, 0, 16, 8);
 	}
-	g_sys.update_screen(g_res.vga, 0);
 }

 void load_m(const char *filename) {
--- a/bb/screen.c
+++ b/bb/screen.c
@ -8,15 +8,19 @@
 #define MAX_SPRITESHEET_W 512
 #define MAX_SPRITESHEET_H 512

-static int _offset_x, _offset_y;
+static int _spr_pos_flag;
+
+static int _offset_x_center, _offset_y_bottom, _offset_y_center;

 void screen_init() {
 	memset(g_res.vga, 0, GAME_SCREEN_W * GAME_SCREEN_H);
-	_offset_x = (GAME_SCREEN_W > 320) ? (GAME_SCREEN_W - 320) / 2 : 0; // center horizontally
-	_offset_y = (GAME_SCREEN_H > 200) ? (GAME_SCREEN_H - 200) : 0; // align to bottom
+	_offset_x_center = (GAME_SCREEN_W > 320) ? (GAME_SCREEN_W - 320) / 2 : 0; // center horizontally
+	_offset_y_center = (GAME_SCREEN_H > 200) ? (GAME_SCREEN_H - 200) / 2 : 0; // center vertically
+	_offset_y_bottom = (GAME_SCREEN_H > 200) ? (GAME_SCREEN_H - 200) : 0; // align to bottom
 }

-void screen_clear_sprites() {
+void screen_clear_sprites(int pos_flag) {
+	_spr_pos_flag = pos_flag;
 	g_sys.render_clear_sprites();
 }

@ -32,11 +36,6 @@ static void add_game_sprite(int x, int y, int frame, int xflip) {
 	if (frame >= SPRITES_COUNT) {
 		spr_type = RENDER_SPR_LEVEL;
 		frame -= SPRITES_COUNT;
-	} else {
-		if (y >= 161 && frame >= 120) {
-			x += _offset_x;
-			y += _offset_y;
-		}
 	}
 	g_sys.render_add_sprite(spr_type, frame, x - w / 2, y - h, xflip);
 }
@ -60,6 +59,13 @@ void screen_add_sprite(int x, int y, int frame) {
 			return;
 		}
 	}
+	if (_spr_pos_flag) { /* introduction screens */
+		x += _offset_x_center;
+		y += _offset_y_center;
+	} else if ((frame >= 120 && frame < SPRITES_COUNT) && y >= 161) { /* bottom panel */
+		x += _offset_x_center;
+		y += _offset_y_bottom;
+	}
 	add_game_sprite(x, y, frame, 0);
 }

@ -82,9 +88,9 @@ void screen_vsync() {
 }

 void screen_draw_frame(const uint8_t *frame, int fh, int fw, int x, int y) {
-	x += _offset_x;
+	x += _offset_x_center;
 	if (y == 161) {
-		y += _offset_y;
+		y += _offset_y_bottom;
 	}
 	y += fh + 2;
 	if (g_options.amiga_status_bar || g_res.amiga_data) {
@ -104,10 +110,6 @@ void screen_draw_frame(const uint8_t *frame, int fh, int fw, int x, int y) {
 	}
 }

-void screen_flip() {
-	g_sys.update_screen(g_res.vga, 1);
-}
-
 void screen_unk5() {
 	// screen_do_transition2();
 	screen_clear(0);
@ -183,8 +185,8 @@ static void draw_number_amiga(int digit, int x, int y) {

 void screen_draw_number(int num, int x, int y, int color) {
 	if (y >= 161) {
-		x += _offset_x;
-		y += _offset_y;
+		x += _offset_x_center;
+		y += _offset_y_bottom;
 	}
 	y += TILEMAP_OFFSET_Y;
 	if (g_options.amiga_status_bar || g_res.amiga_data) {
--- a/intern.h
+++ b/intern.h
@ -11,7 +11,7 @@
 #include <stdbool.h>

 #define ARRAYSIZE(a) (sizeof(a)/sizeof(a[0]))
-#define SWAP(x, y) do { typeof(x) tmp = x; x = y; y = tmp; } while(0)
+#define SWAP(x, y) do { __typeof__(x) tmp = x; x = y; y = tmp; } while(0)

 #undef MIN
 static inline int MIN(int a, int b) {
@ -51,6 +51,7 @@ struct options_t {
 	int screen_w;
 	int screen_h;
 	bool dos_scrolling;
+	bool jump_button;
 	// 'bb' only options
 	bool amiga_copper_bars;
 	bool amiga_colors;
@ -62,7 +63,6 @@ struct options_t {

 struct game_t {
 	const char *name;
-	//int (*detect)(const char *data_path);
 	void (*run)(const char *data_path);
 };

--- a/ja/game.c
+++ b/ja/game.c
@ -15,6 +15,7 @@ void update_input() {
 	g_vars.input_key_up    = (g_sys.input.direction & INPUT_DIRECTION_UP) != 0    ? 0xFF : 0;
 	g_vars.input_key_down  = (g_sys.input.direction & INPUT_DIRECTION_DOWN) != 0  ? 0xFF : 0;
 	g_vars.input_key_space = g_sys.input.space ? 0xFF : 0;
+	g_vars.input_key_jump  = g_sys.input.jump  ? 0xFF : 0;

 	g_vars.input_keystate[2] = g_sys.input.digit1;
 	g_vars.input_keystate[3] = g_sys.input.digit2;
@ -52,7 +53,8 @@ static void scroll_screen_palette() {
 	for (int i = 0; i < count; ++i) {
 		g_sys.set_palette_color(225 + i, g_res.tmp + (225 + g_vars.level_time + i) * 3);
 	}
-	g_sys.update_screen(g_res.vga, 1);
+	g_sys.copy_bitmap(g_res.vga, 320, 200);
+	g_sys.update_screen();
 }

 static void do_select_screen_scroll_palette(int start, int end, int step, int count) {
@ -66,7 +68,8 @@ static void do_select_screen_scroll_palette(int start, int end, int step, int co
 			g_vars.palette_buffer[i] = color;
 		}
 		g_sys.set_screen_palette(g_vars.palette_buffer + start * 3, start, end - start + 1, 6);
-		g_sys.update_screen(g_res.vga, 1);
+		g_sys.copy_bitmap(g_res.vga, 320, 200);
+		g_sys.update_screen();
 		g_sys.sleep(20);
 	} while (--count != 0);
 }
--- a/ja/game.h
+++ b/ja/game.h
@ -129,7 +129,7 @@ struct vars_t {
 	int player;
 	bool input_keystate[128];
 	uint32_t timestamp;
-	uint8_t input_key_left, input_key_right, input_key_down, input_key_up, input_key_space;
+	uint8_t input_key_left, input_key_right, input_key_down, input_key_up, input_key_space, input_key_jump;
 	uint16_t buffer[128 * 2]; /* level objects state 0xFFFF, 0xFF20 or g_vars.objects_table index */
 	int16_t dragon_coords[1 + 128];
 	struct player_t players_table[2];
--- a/ja/level.c
+++ b/ja/level.c
@ -27,7 +27,8 @@ static void do_end_of_level() {
 	ja_decode_motif(g_vars.level_num % 9, color_index);
 	static const uint8_t white[] = { 0x3F, 0x3F, 0x3F };
 	g_sys.set_palette_color(color_index, white);
-	g_sys.update_screen(g_res.vga, 1);
+	g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
+	g_sys.update_screen();
 	g_sys.sleep(1000);
 	g_sys.fade_out_palette();
 }
@ -398,7 +399,7 @@ static void level_update_player_anim_1(struct player_t *player) {
 static void level_update_player_anim_5(struct player_t *player) {
 	level_player_update_hdirection(player);
 	player->obj.spr_num = 5;
-	if (player_jump_counter(&player->obj) != 0 && (player_flags2(&player->obj) & 1) == 0 && g_vars.input_key_up) {
+	if (player_jump_counter(&player->obj) != 0 && (player_flags2(&player->obj) & 1) == 0 && (g_options.jump_button ? g_vars.input_key_jump : g_vars.input_key_up)) {
 		--player_jump_counter(&player->obj);
 		const int dy = (int8_t)player_anim_dy[player_jump_counter(&player->obj)] + player_y_delta(&player->obj);
 		if (dy >= -70) {
@ -550,7 +551,7 @@ static void level_update_player_anim_12(struct player_t *player) {
 static void level_update_player_anim_18(struct player_t *player) {
 	level_player_update_hdirection(player);
 	player->obj.spr_num = 18;
-	if (player_jump_counter(&player->obj) != 0 && g_vars.input_key_up) {
+	if (player_jump_counter(&player->obj) != 0 && (g_options.jump_button ? g_vars.input_key_jump : g_vars.input_key_up)) {
 		--player_jump_counter(&player->obj);
 		player_y_delta(&player->obj) += (int8_t)player_anim_dy[player_jump_counter(&player->obj)];
 	}
@ -594,7 +595,7 @@ static void level_update_player_anim_19(struct player_t *player) {
 static void level_update_player_anim_26(struct player_t *player) {
 	level_player_update_hdirection(player);
 	player->obj.spr_num = 26;
-	if (player_jump_counter(&player->obj) == 0 || !g_vars.input_key_up) {
+	if (player_jump_counter(&player->obj) == 0 || (g_options.jump_button ? !g_vars.input_key_jump : !g_vars.input_key_up)) {
 		return;
 	}
 	--player_jump_counter(&player->obj);
@ -737,7 +738,7 @@ static void level_update_player_from_input(struct player_t *player) {
 	} else {
 		mask <<= 4;
 		if ((player_flags(&player->obj) & 0x10) == 0) {
-			mask |= (g_vars.input_key_up & 8);
+			mask |= (g_options.jump_button ? g_vars.input_key_jump : g_vars.input_key_up) & 8;
 		}
 		mask |= (g_vars.input_key_right & 4);
 		if (player_jump_counter(&player->obj) == 7) {
@ -2695,7 +2696,8 @@ static void level_sync() {
 			--g_vars.level_time;
 		}
 	}
-	g_sys.update_screen(g_res.vga, 1);
+	g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
+	g_sys.update_screen();
 	g_sys.render_clear_sprites();
 	const int diff = (g_vars.timestamp + (1000 / 30)) - g_sys.get_timestamp();
 	g_sys.sleep(MAX(diff, 10));
--- a/ja/screen.c
+++ b/ja/screen.c
@ -46,17 +46,8 @@ void video_copy_vga(int size) {
 	} else {
 		assert(size == 0x7D00);
 		g_sys.set_screen_palette(g_res.tmp, 0, 256, 6);
-		const uint8_t *src = g_res.tmp + 768;
-		if (GAME_SCREEN_W * GAME_SCREEN_H == 64000) {
-			memcpy(g_res.vga, src, 64000);
-		} else {
-			memset(g_res.vga, 0, GAME_SCREEN_W * GAME_SCREEN_H);
-			for (int y = 0; y < MIN(200, GAME_SCREEN_H); ++y) {
-				memcpy(g_res.vga + y * GAME_SCREEN_W, src, MIN(320, GAME_SCREEN_W));
-				src += 320;
-			}
-		}
-		g_sys.update_screen(g_res.vga, 0);
+		memcpy(g_res.vga, g_res.tmp + 768, 64000);
+		g_sys.copy_bitmap(g_res.vga, 320, 200);
 	}
 }

--- a/ja/unpack.c
+++ b/ja/unpack.c
@ -1,5 +1,5 @@

-/* uncompress data packed with DIET by T.Matsumoto */
+/* uncompress data packed with DIET.EXE */

 #include "unpack.h"
 #include "util.h"
--- a/main.c
+++ b/main.c
@ -28,43 +28,40 @@ static const char *USAGE =
 ;

 static struct game_t *detect_game(const char *data_path) {
-#if 0
-	extern struct game_t bb_game;
-	extern struct game_t ja_game;
-	extern struct game_t p2_game;
-	static struct game_t *games[] = {
-		&bb_game,
-		&ja_game,
-		&p2_game,
-		0
-	};
-	for (int i = 0; games[i]; ++i) {
-		if (games[i]->detect(data_path)) {
-			return games[i];
-		}
-	}
-	return 0;
-#else
 	extern struct game_t game;
 	return &game;
-#endif
 }

+#if defined(PSP)
+/* stubs */
+void sound_init() {
+}
+void sound_fini() {
+}
+void play_sound(int num) {
+}
+void play_music(int num) {
+}
+#endif
+
 int main(int argc, char *argv[]) {
-	g_options.start_xpos16 = -1;
-	g_options.start_ypos16 = -1;
-	g_options.screen_w = 320;
-	g_options.screen_h = 200;
-	g_options.dos_scrolling = false;
-	g_options.amiga_copper_bars = true;
-	g_options.amiga_colors = true;
-	// g_options.amiga_status_bar = true;
-	g_options.cga_colors = false;
-	g_options.hybrid_color = false;
 	const char *data_path = DEFAULT_DATA_PATH;
 	int scale_factor = DEFAULT_SCALE_FACTOR;
 	const char *scale_filter = DEFAULT_SCALE_FILTER;
 	bool fullscreen = false;
+	g_options.start_xpos16 = -1;
+	g_options.start_ypos16 = -1;
+	g_options.amiga_copper_bars = true;
+	g_options.amiga_colors = true;
+	// g_options.amiga_status_bar = true;
+#if defined(PSP)
+	g_options.screen_w = 480;
+	g_options.screen_h = 272;
+	g_options.jump_button = true;
+#else
+	g_options.screen_w = 320;
+	g_options.screen_h = 200;
+	// g_options.jump_button = true;
 	if (argc == 2) {
 		struct stat st;
 		if (stat(argv[1], &st) == 0 && S_ISDIR(st.st_mode)) {
@ -121,7 +118,14 @@ int main(int argc, char *argv[]) {
 			if (sscanf(optarg, "%dx%d", &g_options.screen_w, &g_options.screen_h) == 2) {
 				// align to tile 16x16
 				g_options.screen_w =  (g_options.screen_w + 15) & ~15;
-				g_options.screen_h = ((g_options.screen_h + 15) & ~15) + 40; // PANEL_H
+				g_options.screen_h = ((g_options.screen_h + 15) & ~15) + 40; // PANEL_H;
+				// do not allow lower resolution than the original
+				if (g_options.screen_w < 320) {
+					g_options.screen_w = 320;
+				}
+				if (g_options.screen_h < 200) {
+					g_options.screen_h = 200;
+				}
 			}
 			break;
 		case 10:
@ -138,6 +142,7 @@ int main(int argc, char *argv[]) {
 			return -1;
 		}
 	}
+#endif
 	struct game_t *game = detect_game(data_path);
 	if (!game) {
 		fprintf(stdout, "No data files found\n");
--- a/p2/game.c
+++ b/p2/game.c
@ -15,6 +15,7 @@ void update_input() {
 	g_vars.input.key_up    = (g_sys.input.direction & INPUT_DIRECTION_UP) != 0    ? 0xFF : 0;
 	g_vars.input.key_down  = (g_sys.input.direction & INPUT_DIRECTION_DOWN) != 0  ? 0xFF : 0;
 	g_vars.input.key_space = g_sys.input.space ? 0xFF : 0;
+	g_vars.input.key_jump  = g_sys.input.jump  ? 0xFF : 0;

 	g_vars.input.keystate[2] = g_sys.input.digit1;
 	g_vars.input.keystate[3] = g_sys.input.digit2;
@ -51,7 +52,8 @@ static void do_programmed_in_1992_screen() {
 	video_draw_string(offset, 1, "PROGRAMMED IN 1992 ON AT >286 12MHZ>");
 	offset += 0x1E0;
 	video_draw_string(offset, 3, "> > > ENJOY OLDIES<<");
-	g_sys.update_screen(g_res.vga, 1);
+	g_sys.copy_bitmap(g_res.vga, 320, 200);
+	g_sys.update_screen();
 	wait_input(100);
 	video_clear();
 }
@ -76,23 +78,14 @@ static void do_credits() {
 	video_draw_string(offset, 2, "CRISTELLE> GIL ESPECHE AND CORINNE>");
 	offset += 0x1E0;
 	video_draw_string(offset, 0, "SEBASTIEN BECHET AND OLIVIER AKA DELTA>");
-	g_sys.update_screen(g_res.vga, 1);
+	g_sys.copy_bitmap(g_res.vga, 320, 200);
+	g_sys.update_screen();
 }

 static void update_screen_img(const uint8_t *src, int present) {
-	const int size = GAME_SCREEN_W * GAME_SCREEN_H;
-	if (size < 64000) {
-		return;
-	} else if (size == 64000) {
-		g_sys.update_screen(src, present);
-	} else {
-		memset(g_res.vga, 0, size);
-		const int y_offs = (GAME_SCREEN_H - 200) / 2;
-		const int x_offs = (GAME_SCREEN_W - 320) / 2;
-		for (int y = 0; y < 200; ++y) {
-			memcpy(g_res.vga + (y_offs + y) * GAME_SCREEN_W + x_offs, src + y * 320, 320);
-		}
-		g_sys.update_screen(g_res.vga, present);
+	g_sys.copy_bitmap(src, 320, 200);
+	if (present) {
+		g_sys.update_screen();
 	}
 }

@ -190,8 +183,8 @@ void do_gameover_screen() {
 	if (data) {
 		video_copy_img(data);
 		video_copy_background();
-		g_sys.update_screen(g_res.vga, 0);
 		g_sys.set_screen_palette(gameover_palette_data, 0, 16, 6);
+		g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
 		do_gameover_animation();
 		g_sys.fade_out_palette();
 		free(data);
@ -205,8 +198,8 @@ static void do_menu2() {
 	if (data) {
 		video_copy_img(data);
 		video_copy_background();
-		g_sys.update_screen(g_res.vga, 0);
 		g_sys.set_screen_palette(data + 32000, 0, 16, 6);
+		g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
 		g_sys.fade_in_palette();
 		do_demo_animation();
 		g_sys.fade_out_palette();
--- a/p2/game.h
+++ b/p2/game.h
@ -120,7 +120,7 @@ struct vars_t {
 	} random;
 	struct {
 		bool keystate[128];
-		uint8_t key_left, key_right, key_down, key_up, key_space;
+		uint8_t key_left, key_right, key_down, key_up, key_space, key_jump;
 		uint8_t key_vdir, key_hdir;
 		uint16_t demo_offset;
 		uint8_t demo_mask, demo_counter;
--- a/p2/level.c
+++ b/p2/level.c
@ -2446,7 +2446,7 @@ static void level_update_player() {
 	mask <<= 1;
 	mask |= g_vars.input.key_left & 1;
 	mask <<= 1;
-	mask |= g_vars.input.key_up & 1;
+	mask |= (g_options.jump_button ? g_vars.input.key_jump : g_vars.input.key_up) & 1;
 	mask <<= 1;
 	mask |= g_vars.input.key_down & 1;
 	mask <<= 1;
@ -2664,7 +2664,7 @@ static void level_update_player_collision() {
 						level_add_object75_score(obj_player, (int16_t)data[num >> 1]);
 					}
 				}
-				g_vars.objects_tbl[1].data.p.y_velocity = (g_vars.input.key_up != 0) ? -224 : -64;
+				g_vars.objects_tbl[1].data.p.y_velocity = (g_options.jump_button ? g_vars.input.key_jump : g_vars.input.key_up) ? -224 : -64;
 				g_vars.player_jumping_counter = 0;
 				g_vars.objects_tbl[1].y_pos -= g_vars.monster.collide_y_dist;
 			} else if (g_vars.objects_tbl[1].data.p.y_velocity <= 32) {
@ -3269,7 +3269,8 @@ static void level_update_light_palette() {

 static void level_sync() {
 	update_input();
-	g_sys.update_screen(g_res.vga, 1);
+	g_sys.copy_bitmap(g_res.vga, GAME_SCREEN_W, GAME_SCREEN_H);
+	g_sys.update_screen();
 	g_sys.render_clear_sprites();
 	const int diff = (g_vars.timestamp + (1000 / 30)) - g_sys.get_timestamp();
 	g_sys.sleep(MAX(diff, 10));
--- a/p2/screen.c
+++ b/p2/screen.c
@ -61,9 +61,7 @@ static void convert_planar_tile_4bpp(const uint8_t *src, uint8_t *dst, int dst_p

 void video_draw_string(int offset, int hspace, const char *s) {
 	offset += hspace;
-	const int y = (offset * 8) / 320 + (GAME_SCREEN_H - 200) / 2;
-	const int x = (offset * 8) % 320 + (GAME_SCREEN_W - 320) / 2;
-	uint8_t *dst = g_res.vga + y * GAME_SCREEN_W + x;
+	uint8_t *dst = g_res.vga + offset * 8;
 	while (*s) {
 		uint8_t code = *s++;
 		if (code != 0x20) {
@ -71,7 +69,7 @@ void video_draw_string(int offset, int hspace, const char *s) {
 			if (code > 9) {
 				code -= 2;
 			}
-			decode_planar(g_res.allfonts + code * 48, dst, GAME_SCREEN_W, 8, 12, 0);
+			decode_planar(g_res.allfonts + code * 48, dst, 320, 8, 12, 0);
 		}
 		dst += 8;
 	}
--- a/sys.h
+++ b/sys.h
@ -14,11 +14,13 @@
 #define RENDER_SPR_GAME  0 /* player sprites */
 #define RENDER_SPR_LEVEL 1 /* level sprites */
 #define RENDER_SPR_FG    2 /* foreground tiles */
+#define RENDER_SPR_COUNT 3

 struct input_t {
 	uint8_t direction;
 	bool quit;
 	bool space;
+	bool jump;
 	bool digit1, digit2, digit3;
 };

@ -36,7 +38,7 @@ enum sys_transition_e {

 struct sys_t {
 	struct input_t	input;
-	int	(*init)();
+	void	(*init)();
 	void	(*fini)();
 	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 offset, int count, int depth);
@ -45,7 +47,8 @@ struct sys_t {
 	void	(*set_palette_color)(int i, const uint8_t *colors);
 	void	(*fade_in_palette)();
 	void	(*fade_out_palette)();
-	void	(*update_screen)(const uint8_t *p, int present);
+	void	(*copy_bitmap)(const uint8_t *p, int w, int h);
+	void	(*update_screen)();
 	void	(*shake_screen)(int dx, int dy);
 	void	(*transition_screen)(enum sys_transition_e type, bool open);
 	void	(*process_events)();
@ -60,6 +63,7 @@ struct sys_t {
 	void	(*render_add_sprite)(int spr_type, int frame, int x, int y, int xflip);
 	void	(*render_clear_sprites)();
 	void	(*render_set_sprites_clipping_rect)(int x, int y, int w, int h);
+	void	(*print_log)(FILE *fp, const char *s);
 };

 extern struct sys_t g_sys;
--- a/sys_psp.c
+++ b/sys_psp.c
@ -0,0 +1,428 @@
+
+#include <pspaudio.h>
+#include <pspaudiolib.h>
+#include <pspctrl.h>
+#include <pspdisplay.h>
+#include <pspgu.h>
+#include <pspkernel.h>
+#include <pspsdk.h>
+#include <malloc.h>
+#include "sys.h"
+
+PSP_MODULE_INFO("Blues Brothers", 0, 1, 0);
+PSP_MAIN_THREAD_ATTR(THREAD_ATTR_USER);
+
+static uint32_t _buttons;
+
+static sys_audio_cb _audio_proc;
+static void *_audio_param;
+static int _audio_channel;
+static SceUID _audio_mutex;
+
+static uint32_t _fb_offset;
+
+// static const int AUDIO_FREQ = 44100;
+static const int AUDIO_SAMPLES_COUNT = 2048;
+
+static const int SCREEN_W = 480;
+static const int SCREEN_H = 272;
+static const int SCREEN_PITCH = 512;
+
+static uint32_t __attribute__((aligned(16))) _dlist[262144];
+static uint32_t __attribute__((aligned(16))) _clut[256];
+
+#define MAX_SPRITES 256
+
+struct vertex_t {
+	int16_t u, v;
+	int16_t x, y, z;
+};
+
+struct spritetexture_t {
+	int w, h;
+	uint8_t *bitmap;
+	int count;
+	struct sys_rect_t *r;
+};
+
+static struct spritetexture_t _spritetextures[RENDER_SPR_COUNT];
+
+struct sprite_t {
+	struct vertex_t v[2];
+	int tex;
+};
+
+static struct sprite_t _sprites[MAX_SPRITES];
+static int _sprites_count;
+
+static void print_log(FILE *fp, const char *s) {
+	static bool first_open = false;
+	if (!first_open) {
+		fp = fopen("stdout.txt", "w");
+		first_open = true;
+	} else {
+		fp = fopen("stdout.txt", "a");
+	}
+	fprintf(fp, "%s\n", s);
+	fclose(fp);
+}
+
+static int exit_callback(int arg1, int arg2, void *common) {
+	g_sys.input.quit = true;
+	return 0;
+}
+
+static int callback_thread(SceSize args, void *argp) {
+	const int cb = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
+	sceKernelRegisterExitCallback(cb);
+	sceKernelSleepThreadCB();
+	return 0;
+}
+
+static void psp_init() {
+	_buttons = 0;
+
+	memset(&_audio_proc, 0, sizeof(_audio_proc));
+	_audio_channel = -1;
+	_audio_mutex = 0;
+
+	const int th = sceKernelCreateThread("update_thread", callback_thread, 0x11, 0xFA0, 0, 0);
+	if (th >= 0) {
+		sceKernelStartThread(th, 0, 0);
+	}
+
+	sceKernelDcacheWritebackAll();
+
+	sceCtrlSetSamplingCycle(0);
+	sceCtrlSetSamplingMode(PSP_CTRL_MODE_ANALOG);
+}
+
+static void psp_fini() {
+	sceGuTerm();
+	sceKernelExitGame();
+}
+
+static void psp_set_screen_size(int w, int h, const char *caption, int scale, const char *filter, bool fullscreen) {
+	sceGuInit();
+	sceGuStart(GU_DIRECT, _dlist);
+
+	const int fbSize = SCREEN_PITCH * SCREEN_H * sizeof(uint32_t); // rgba
+	uint32_t vramOffset = 0;
+	sceGuDrawBuffer(GU_PSM_8888, (void *)vramOffset, SCREEN_PITCH); vramOffset += fbSize;
+	sceGuDispBuffer(SCREEN_W, SCREEN_H, (void *)vramOffset, SCREEN_PITCH); vramOffset += fbSize;
+
+	sceGuOffset(2048 - (SCREEN_W / 2), 2048 - (SCREEN_H / 2));
+	sceGuViewport(2048, 2048, SCREEN_W, SCREEN_H);
+	sceGuScissor(0, 0, SCREEN_W, SCREEN_H);
+	sceGuEnable(GU_SCISSOR_TEST);
+	sceGuEnable(GU_TEXTURE_2D);
+	sceGuDisable(GU_DEPTH_TEST);
+
+	sceGuClearColor(0);
+	sceGuClear(GU_COLOR_BUFFER_BIT);
+
+	sceGuFinish();
+	sceGuSync(GU_SYNC_WHAT_DONE, GU_SYNC_FINISH);
+
+	sceDisplayWaitVblankStart();
+	_fb_offset = (uint32_t)sceGuSwapBuffers();
+	sceGuDisplay(GU_TRUE);
+
+	for (int i = 0; i < 256; ++i) {
+		_clut[i] = GU_RGBA(0, 0, 0, 255);
+	}
+	sceKernelDcacheWritebackRange(_clut, sizeof(_clut));
+}
+
+static void psp_set_screen_palette(const uint8_t *colors, int offset, int count, int depth) {
+	const int shift = 8 - depth;
+	for (int i = 0; i < count; ++i) {
+		int r = *colors++;
+		int g = *colors++;
+		int b = *colors++;
+		if (shift != 0) {
+			r = (r << shift) | (r >> (depth - shift));
+			g = (g << shift) | (g >> (depth - shift));
+			b = (b << shift) | (b >> (depth - shift));
+		}
+		_clut[offset + i] = GU_RGBA(r, g, b, 255);
+	}
+	sceKernelDcacheWritebackRange(_clut, sizeof(_clut));
+}
+
+static uint32_t convert_amiga_color(uint16_t color) {
+	uint8_t r = (color >> 8) & 15;
+	r |= r << 4;
+	uint8_t g = (color >> 4) & 15;
+	g |= g << 4;
+	uint8_t b =  color       & 15;
+	b |= b << 4;
+	return GU_RGBA(r, g, b, 255);
+}
+
+static void psp_set_palette_amiga(const uint16_t *colors, int offset) {
+	for (int i = 0; i < 16; ++i) {
+		_clut[offset + i] = convert_amiga_color(colors[i]);
+	}
+	sceKernelDcacheWritebackRange(_clut, sizeof(_clut));
+}
+
+static void psp_set_copper_bars(const uint16_t *data) {
+}
+
+static void psp_set_palette_color(int i, const uint8_t *colors) {
+	_clut[i] = GU_RGBA(colors[0], colors[1], colors[2], 255);
+	sceKernelDcacheWritebackRange(_clut, sizeof(_clut));
+}
+
+static void psp_fade_in_palette() {
+	sceDisplayWaitVblankStart();
+	_fb_offset = (uint32_t)sceGuSwapBuffers();
+}
+
+static void psp_fade_out_palette() {
+	uint32_t *buffer = (uint32_t *)(((uint8_t *)sceGeEdramGetAddr()) + _fb_offset);
+	for (int y = 0; y < SCREEN_H; ++y) {
+		memset(buffer, 0, SCREEN_W * sizeof(uint32_t));
+		buffer += SCREEN_PITCH;
+	}
+}
+
+static void psp_transition_screen(enum sys_transition_e type, bool open) {
+}
+
+static void psp_copy_bitmap(const uint8_t *p, int w, int h) {
+	const int dx = (SCREEN_W - w) / 2;
+	const int dy = (SCREEN_H - h) / 2;
+	uint32_t *buffer = (uint32_t *)(((uint8_t *)sceGeEdramGetAddr()) + _fb_offset);
+	for (int y = 0; y < h; ++y) {
+		for (int x = 0; x < w; ++x) {
+			buffer[(dy + y) * SCREEN_PITCH + (dx + x)] = _clut[*p++];
+		}
+	}
+}
+
+static void psp_update_screen() {
+	sceGuStart(GU_DIRECT, _dlist);
+
+	sceGuClutMode(GU_PSM_8888, 0, 0xFF, 0);
+	sceGuClutLoad(256 / 8, _clut);
+	sceGuTexMode(GU_PSM_T8, 0, 0, 0);
+	sceGuTexFunc(GU_TFX_REPLACE, GU_TCC_RGB);
+	sceGuTexFilter(GU_NEAREST, GU_NEAREST);
+
+	sceGuEnable(GU_COLOR_TEST);
+	sceGuColorFunc(GU_NOTEQUAL, _clut[0], 0xFFFFFF);
+
+	int prev_tex = -1;
+
+	for (int i = 0; i < _sprites_count; ++i) {
+		struct sprite_t *spr = &_sprites[i];
+
+		if (prev_tex != spr->tex) {
+			struct spritetexture_t *st = &_spritetextures[spr->tex];
+			sceGuTexImage(0, st->w, st->h, st->w, st->bitmap);
+			prev_tex = spr->tex;
+		}
+
+		struct vertex_t *v = (struct vertex_t *)sceGuGetMemory(2 * sizeof(struct vertex_t));
+		v[0] = spr->v[0];
+		v[1] = spr->v[1];
+
+		sceGuDrawArray(GU_SPRITES, GU_TEXTURE_16BIT | GU_VERTEX_16BIT | GU_TRANSFORM_2D, 2, 0, v);
+	}
+
+	sceGuDisable(GU_COLOR_TEST);
+
+	sceGuFinish();
+	sceGuSync(GU_SYNC_WHAT_DONE, GU_SYNC_FINISH);
+
+	sceDisplayWaitVblankStart();
+	_fb_offset = (uint32_t)sceGuSwapBuffers();
+}
+
+static void psp_shake_screen(int dx, int dy) {
+	sceGuOffset(2048 - (SCREEN_W / 2) + dx, 2048 - (SCREEN_H / 2) + dy);
+}
+
+static void psp_process_events() {
+
+	g_sys.input.direction = 0;
+
+	static const struct {
+		int psp;
+		int sys;
+	} mapping[] = {
+		{ PSP_CTRL_UP, INPUT_DIRECTION_UP },
+		{ PSP_CTRL_RIGHT, INPUT_DIRECTION_RIGHT },
+		{ PSP_CTRL_DOWN, INPUT_DIRECTION_DOWN },
+		{ PSP_CTRL_LEFT, INPUT_DIRECTION_LEFT },
+		{ 0, 0 }
+	};
+	SceCtrlData data;
+	sceCtrlPeekBufferPositive(&data, 1);
+	for (int i = 0; mapping[i].psp != 0; ++i) {
+		if (data.Buttons & mapping[i].psp) {
+			g_sys.input.direction |= mapping[i].sys;
+		}
+	}
+	static const int lxMargin = 64;
+	if (data.Lx < 127 - lxMargin) {
+		g_sys.input.direction |= INPUT_DIRECTION_LEFT;
+	} else if (data.Lx > 127 + lxMargin) {
+		g_sys.input.direction |= INPUT_DIRECTION_RIGHT;
+	}
+	static const int lyMargin = 64;
+	if (data.Ly < 127 - lyMargin) {
+		g_sys.input.direction |= INPUT_DIRECTION_UP;
+	} else if (data.Ly > 127 + lyMargin) {
+		g_sys.input.direction |= INPUT_DIRECTION_DOWN;
+	}
+
+	// PSP_CTRL_CROSS
+	g_sys.input.space = (data.Buttons & PSP_CTRL_SQUARE) != 0;
+	g_sys.input.jump  = (data.Buttons & PSP_CTRL_CIRCLE) != 0;
+	// PSP_CTRL_TRIANGLE
+
+	const uint32_t mask = data.Buttons ^ _buttons;
+	if ((data.Buttons & PSP_CTRL_LTRIGGER) & mask) {
+	}
+	if ((data.Buttons & PSP_CTRL_RTRIGGER) & mask) {
+	}
+	_buttons = data.Buttons;
+}
+
+static void psp_sleep(int duration) {
+	sceKernelDelayThread(duration * 1000);
+}
+
+static uint32_t psp_get_timestamp() {
+	struct timeval tv;
+	sceKernelLibcGettimeofday(&tv, 0);
+	return tv.tv_sec * 1000 + tv.tv_usec / 1000;
+}
+
+static void psp_lock_audio() {
+	sceKernelWaitSema(_audio_mutex, 1, 0);
+}
+
+static void psp_unlock_audio() {
+	sceKernelSignalSema(_audio_mutex, 1);
+}
+
+static void audio_callback(void *buf, unsigned int samples, void *param) { // 44100hz S16 stereo
+	int16_t buf22khz[samples];
+	memset(buf22khz, 0, sizeof(buf22khz));
+	psp_lock_audio();
+	_audio_proc(_audio_param, (uint8_t *)buf22khz, samples);
+	psp_unlock_audio();
+	uint32_t *buf44khz = (uint32_t *)buf;
+	static int16_t prev;
+	for (unsigned int i = 0; i < samples; ++i) {
+		const int16_t current = buf22khz[i];
+		buf44khz[i] = (current << 16) | (((prev + current) >> 1) & 0xFFFF);
+		prev = current;
+	}
+}
+
+static void psp_start_audio(sys_audio_cb callback, void *param) {
+	// sceAudioSetFrequency(AUDIO_FREQ);
+	pspAudioInit();
+	_audio_proc = callback;
+	_audio_param = param;
+	_audio_mutex = sceKernelCreateSema("audio_lock", 0, 1, 1, 0);
+	_audio_channel = sceAudioChReserve(PSP_AUDIO_NEXT_CHANNEL, AUDIO_SAMPLES_COUNT, PSP_AUDIO_FORMAT_STEREO);
+	pspAudioSetChannelCallback(_audio_channel, audio_callback, 0);
+}
+
+static void psp_stop_audio() {
+	sceAudioChRelease(_audio_channel);
+	sceKernelDeleteSema(_audio_mutex);
+	pspAudioEnd();
+}
+
+static void render_load_sprites(int spr_type, int count, const struct sys_rect_t *r, const uint8_t *data, int w, int h, uint8_t color_key, bool update_pal) {
+	struct spritetexture_t *st = &_spritetextures[spr_type];
+	st->r = (struct sys_rect_t *)malloc(count * sizeof(struct sys_rect_t));
+	if (st->r) {
+		memcpy(st->r, r, count * sizeof(struct sys_rect_t));
+		st->count = count;
+	}
+	st->bitmap = (uint8_t *)memalign(16, w * h);
+	if (st->bitmap) {
+		memcpy(st->bitmap, data, w * h);
+		st->w = w;
+		st->h = h;
+		sceKernelDcacheWritebackRange(st->bitmap, w * h);
+	}
+}
+
+static void render_unload_sprites(int spr_type) {
+	struct spritetexture_t *st = &_spritetextures[spr_type];
+	if (st->r) {
+		free(st->r);
+	}
+	if (st->bitmap) {
+		free(st->bitmap);
+	}
+	memset(st, 0, sizeof(struct spritetexture_t));
+}
+
+static void render_add_sprite(int spr_type, int frame, int x, int y, int xflip) {
+	if (_sprites_count < MAX_SPRITES) {
+		struct sprite_t *spr = &_sprites[_sprites_count];
+		struct vertex_t *v = spr->v;
+
+		struct sys_rect_t *r = &_spritetextures[spr_type].r[frame];
+		if (!xflip) {
+			v[0].u = r->x; v[1].u = r->x + r->w;
+		} else {
+			v[0].u = r->x + r->w; v[1].u = r->x;
+		}
+		v[0].v = r->y; v[1].v = r->y + r->h;
+		v[0].x = x; v[1].x = x + r->w;
+		v[0].y = y; v[1].y = y + r->h;
+		v[0].z = 0; v[1].z = 0;
+
+		spr->tex = spr_type;
+
+		++_sprites_count;
+	}
+}
+
+static void render_clear_sprites() {
+	_sprites_count = 0;
+}
+
+static void render_set_sprites_clipping_rect(int x, int y, int w, int h) {
+	sceGuScissor(x, y, w, h);
+}
+
+struct sys_t g_sys = {
+	.init = psp_init,
+	.fini = psp_fini,
+	.set_screen_size = psp_set_screen_size,
+	.set_screen_palette = psp_set_screen_palette,
+	.set_palette_amiga = psp_set_palette_amiga,
+	.set_copper_bars = psp_set_copper_bars,
+	.set_palette_color = psp_set_palette_color,
+	.fade_in_palette = psp_fade_in_palette,
+	.fade_out_palette = psp_fade_out_palette,
+	.copy_bitmap = psp_copy_bitmap,
+	.update_screen = psp_update_screen,
+	.shake_screen = psp_shake_screen,
+	.transition_screen = psp_transition_screen,
+	.process_events = psp_process_events,
+	.sleep = psp_sleep,
+	.get_timestamp = psp_get_timestamp,
+	.start_audio = psp_start_audio,
+	.stop_audio = psp_stop_audio,
+	.lock_audio = psp_lock_audio,
+	.unlock_audio = psp_unlock_audio,
+	.render_load_sprites = render_load_sprites,
+	.render_unload_sprites = render_unload_sprites,
+	.render_add_sprite = render_add_sprite,
+	.render_clear_sprites = render_clear_sprites,
+	.render_set_sprites_clipping_rect = render_set_sprites_clipping_rect,
+	.print_log = print_log,
+};
--- a/sys_sdl2.c
+++ b/sys_sdl2.c
@ -5,7 +5,6 @@

 #define COPPER_BARS_H 80
 #define MAX_SPRITES 256
-#define MAX_SPRITESHEETS 3

 static const int FADE_STEPS = 16;

@ -16,7 +15,7 @@ struct spritesheet_t {
 	SDL_Texture *texture;
 };

-static struct spritesheet_t _spritesheets[MAX_SPRITESHEETS];
+static struct spritesheet_t _spritesheets[RENDER_SPR_COUNT];

 struct sprite_t {
 	int sheet;
@ -44,7 +43,7 @@ static uint32_t _copper_palette[COPPER_BARS_H];
 static SDL_GameController *_controller;
 static SDL_Joystick *_joystick;

-static int sdl2_init() {
+static void sdl2_init() {
 	SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER);
 	SDL_ShowCursor(SDL_DISABLE);
 	_screen_w = _screen_h = 0;
@ -72,7 +71,6 @@ static int sdl2_init() {
 			}
 		}
 	}
-	return 0;
 }

 static void sdl2_fini() {
@ -188,9 +186,9 @@ static void sdl2_set_screen_palette(const uint8_t *colors, int offset, int count
 	SDL_Color *palette_colors = &_palette->colors[offset];
 	const int shift = 8 - depth;
 	for (int i = 0; i < count; ++i) {
-		int r = colors[0];
-		int g = colors[1];
-		int b = colors[2];
+		int r = *colors++;
+		int g = *colors++;
+		int b = *colors++;
 		if (depth != 8) {
 			r = (r << shift) | (r >> (depth - shift));
 			g = (g << shift) | (g >> (depth - shift));
@ -200,7 +198,6 @@ static void sdl2_set_screen_palette(const uint8_t *colors, int offset, int count
 		palette_colors[i].r = r;
 		palette_colors[i].g = g;
 		palette_colors[i].b = b;
-		colors += 3;
 	}
 	for (int i = 0; i < ARRAYSIZE(_spritesheets); ++i) {
 		struct spritesheet_t *sheet = &_spritesheets[i];
@ -286,11 +283,21 @@ static void sdl2_transition_screen(enum sys_transition_e type, bool open) {
 	} while (r.x > 0 && (type == TRANSITION_CURTAIN || r.y > 0));
 }

-static void sdl2_update_screen(const uint8_t *p, int present) {
-	if (_copper_color_key != -1) {
+static void sdl2_copy_bitmap(const uint8_t *p, int w, int h) {
+	if (w != _screen_w || h != _screen_h) {
+		memset(_screen_buffer, 0, _screen_w * _screen_h * sizeof(uint32_t));
+		const int offset_x = (_screen_w - w) / 2;
+		const int offset_y = (_screen_h - h) / 2;
+		for (int j = 0; j < h; ++j) {
+			for (int i = 0; i < w; ++i) {
+				_screen_buffer[(offset_y + j) * _screen_w + (offset_x + i)] = _screen_palette[*p++];
+			}
+		}
+	} else if (_copper_color_key != -1) {
 		for (int j = 0; j < _screen_h; ++j) {
-			if (j / 2 < COPPER_BARS_H) {
-				const uint32_t line_color = _copper_palette[j / 2];
+			const int color = (j * 200 / _screen_h) / 2;
+			if (color < COPPER_BARS_H) {
+				const uint32_t line_color = _copper_palette[color];
 				for (int i = 0; i < _screen_w; ++i) {
 					_screen_buffer[j * _screen_w + i] = (p[i] == _copper_color_key) ? line_color : _screen_palette[p[i]];
 				}
@ -307,38 +314,39 @@ static void sdl2_update_screen(const uint8_t *p, int present) {
 		}
 	}
 	SDL_UpdateTexture(_texture, 0, _screen_buffer, _screen_w * sizeof(uint32_t));
-	if (present) {
-		SDL_Rect r;
-		r.x = _shake_dx;
-		r.y = _shake_dy;
-		r.w = _screen_w;
-		r.h = _screen_h;
-		SDL_RenderClear(_renderer);
-		SDL_RenderCopy(_renderer, _texture, 0, &r);
+}

-		// sprites
-		SDL_RenderSetClipRect(_renderer, &_sprites_cliprect);
-		for (int i = 0; i < _sprites_count; ++i) {
-			const struct sprite_t *spr = &_sprites[i];
-			struct spritesheet_t *sheet = &_spritesheets[spr->sheet];
-			if (spr->num >= sheet->count) {
-				continue;
-			}
-			SDL_Rect r;
-			r.x = spr->x + _shake_dx;
-			r.y = spr->y + _shake_dy;
-			r.w = sheet->r[spr->num].w;
-			r.h = sheet->r[spr->num].h;
-			if (!spr->xflip) {
-				SDL_RenderCopy(_renderer, sheet->texture, &sheet->r[spr->num], &r);
-			} else {
-				SDL_RenderCopyEx(_renderer, sheet->texture, &sheet->r[spr->num], &r, 0., 0, SDL_FLIP_HORIZONTAL);
-			}
+static void sdl2_update_screen() {
+	SDL_Rect r;
+	r.x = _shake_dx;
+	r.y = _shake_dy;
+	r.w = _screen_w;
+	r.h = _screen_h;
+	SDL_RenderClear(_renderer);
+	SDL_RenderCopy(_renderer, _texture, 0, &r);
+
+	// sprites
+	SDL_RenderSetClipRect(_renderer, &_sprites_cliprect);
+	for (int i = 0; i < _sprites_count; ++i) {
+		const struct sprite_t *spr = &_sprites[i];
+		struct spritesheet_t *sheet = &_spritesheets[spr->sheet];
+		if (spr->num >= sheet->count) {
+			continue;
+		}
+		SDL_Rect r;
+		r.x = spr->x + _shake_dx;
+		r.y = spr->y + _shake_dy;
+		r.w = sheet->r[spr->num].w;
+		r.h = sheet->r[spr->num].h;
+		if (!spr->xflip) {
+			SDL_RenderCopy(_renderer, sheet->texture, &sheet->r[spr->num], &r);
+		} else {
+			SDL_RenderCopyEx(_renderer, sheet->texture, &sheet->r[spr->num], &r, 0., 0, SDL_FLIP_HORIZONTAL);
 		}
-		SDL_RenderSetClipRect(_renderer, 0);
-
-		SDL_RenderPresent(_renderer);
 	}
+	SDL_RenderSetClipRect(_renderer, 0);
+
+	SDL_RenderPresent(_renderer);
 }

 static void sdl2_shake_screen(int dx, int dy) {
@ -380,6 +388,10 @@ static void handle_keyevent(int keysym, bool keydown, struct input_t *input, boo
 	case SDLK_SPACE:
 		input->space = keydown;
 		break;
+	case SDLK_LSHIFT:
+	case SDLK_RSHIFT:
+		input->jump = keydown;
+		break;
 	case SDLK_ESCAPE:
 		if (keydown) {
 			g_sys.input.quit = true;
@ -437,13 +449,10 @@ static void handle_controlleraxis(int axis, int value, struct input_t *input) {
 static void handle_controllerbutton(int button, bool pressed, struct input_t *input, bool *paused) {
 	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:
-		g_sys.input.quit = true;
+	case SDL_CONTROLLER_BUTTON_B:
+		input->jump = pressed;
 		break;
 	case SDL_CONTROLLER_BUTTON_START:
 		if (!pressed) {
@ -520,8 +529,13 @@ static void handle_joystickaxismotion(int axis, int value, struct input_t *input
 }

 static void handle_joystickbutton(int button, int pressed, struct input_t *input) {
-	if (button == 0) {
+	switch (button) {
+	case 0:
 		input->space = pressed;
+		break;
+	case 1:
+		input->jump = pressed;
+		break;
 	}
 }

@ -717,6 +731,9 @@ static void render_set_sprites_clipping_rect(int x, int y, int w, int h) {
 	_sprites_cliprect.h = h;
 }

+static void print_log(FILE *fp, const char *s) {
+}
+
 struct sys_t g_sys = {
 	.init = sdl2_init,
 	.fini = sdl2_fini,
@ -727,6 +744,7 @@ struct sys_t g_sys = {
 	.set_palette_color = sdl2_set_palette_color,
 	.fade_in_palette = sdl2_fade_in_palette,
 	.fade_out_palette = sdl2_fade_out_palette,
+	.copy_bitmap = sdl2_copy_bitmap,
 	.update_screen = sdl2_update_screen,
 	.shake_screen = sdl2_shake_screen,
 	.transition_screen = sdl2_transition_screen,
@ -741,5 +759,6 @@ struct sys_t g_sys = {
 	.render_unload_sprites = render_unload_sprites,
 	.render_add_sprite = render_add_sprite,
 	.render_clear_sprites = render_clear_sprites,
-	.render_set_sprites_clipping_rect = render_set_sprites_clipping_rect
+	.render_set_sprites_clipping_rect = render_set_sprites_clipping_rect,
+	.print_log = print_log,
 };
--- a/util.c
+++ b/util.c
@ -1,6 +1,8 @@

 #include <stdarg.h>
 #include <sys/param.h>
+#include <sys/unistd.h>
+#include "sys.h"
 #include "util.h"

 int g_debug_mask = 0;
@ -21,6 +23,7 @@ void string_upper(char *p) {
 	}
 }

+#ifndef NDEBUG
 void print_debug(int debug_channel, const char *msg, ...) {
 	if (g_debug_mask & debug_channel) {
 		char buf[256];
@ -29,8 +32,10 @@ void print_debug(int debug_channel, const char *msg, ...) {
 		vsprintf(buf, msg, va);
 		va_end(va);
 		fprintf(stdout, "%s\n", buf);
+		g_sys.print_log(stdout, buf);
 	}
 }
+#endif

 void print_warning(const char *msg, ...) {
 	char buf[256];
@ -39,6 +44,7 @@ void print_warning(const char *msg, ...) {
 	vsprintf(buf, msg, va);
 	va_end(va);
 	fprintf(stderr, "WARNING: %s\n", buf);
+	g_sys.print_log(stderr, buf);
 }

 void print_error(const char *msg, ...) {
@ -48,6 +54,7 @@ void print_error(const char *msg, ...) {
 	vsprintf(buf, msg, va);
 	va_end(va);
 	fprintf(stderr, "ERROR: %s!\n", buf);
+	g_sys.print_log(stderr, buf);
 	exit(-1);
 }

@ -58,6 +65,7 @@ void print_info(const char *msg, ...) {
 	vsprintf(buf, msg, va);
 	va_end(va);
 	fprintf(stdout, "%s\n", buf);
+	g_sys.print_log(stdout, buf);
 }

 FILE *fopen_nocase(const char *path, const char *filename) {
--- a/util.h
+++ b/util.h
@ -22,6 +22,10 @@ extern void	print_warning(const char *msg, ...);
 extern void	print_error(const char *msg, ...);
 extern void	print_info(const char *msg, ...);

+#ifdef NDEBUG
+#define print_debug(x, ...)
+#endif
+
 extern FILE *	fopen_nocase(const char *path, const char *filename);
 extern uint16_t	fread_le16(FILE *fp);