Implement joypad support

include/input.h

@@ -140,6 +140,8 @@ extern bool keyboard_focus;
 void handle_events(void);
 bool key_is_down(enum sact_keycode code);
 void key_clear_flag(void);
+bool joy_key_is_down(uint8_t code);
+void joy_clear_flag(void);
 void mouse_get_pos(int *x, int *y);
 void mouse_set_pos(int x, int y);
 void mouse_get_wheel(int *forward, int *back);

include/xsystem4.h

@@ -18,6 +18,7 @@
 #define XSYSTEM4_H
 
 #include <stddef.h>
+#include <stdbool.h>
 
 struct config {
 	char *game_name;
@@ -32,6 +33,8 @@ struct config {
 
 	char *bgi_path;
 	char *wai_path;
+
+	bool joypad;
 };
 
 extern struct config config;

src/asset_manager.c

@@ -180,8 +180,6 @@ void asset_manager_init(void)
 		}
 	}
 
-	NOTICE("%d CG archives", ald_count[ASSET_CG]);
-
 	// open ALD archives
 	ald_init(ASSET_BGM, ald_filenames[ASSET_BGM], ald_count[ASSET_BGM]);
 	ald_init(ASSET_SOUND, ald_filenames[ASSET_SOUND], ald_count[ASSET_SOUND]);

src/hll/SACT2.c

@@ -655,12 +655,13 @@ int sact_Mouse_SetPos(int x, int y)
 
 void sact_Joypad_ClearKeyDownFlag(int n)
 {
-	// TODO
+	joy_clear_flag();
 }
 
 int sact_Joypad_IsKeyDown(int num, int key)
 {
-	return 0; // TODO
+	handle_events();
+	return joy_key_is_down(key);
 }
 
 //int SACT2_Joypad_GetNumof(void);

src/input.c

@@ -22,6 +22,7 @@
 #include "vm.h"
 
 bool key_state[VK_NR_KEYCODES];
+bool joybutton_state[SDL_CONTROLLER_BUTTON_MAX];
 static enum sact_keycode sdl_keytable[] = {
 	[SDL_SCANCODE_0] = VK_0,
 	[SDL_SCANCODE_1] = VK_1,
@@ -134,6 +135,9 @@ static enum sact_keycode sdl_keytable[] = {
 bool mouse_focus = true;
 bool keyboard_focus = true;
 
+#define MAX_CONTROLLERS 4
+static SDL_GameController *controllers[MAX_CONTROLLERS];
+
 static enum sact_keycode sdl_to_sact_button(int button)
 {
 	switch (button) {
@@ -153,6 +157,39 @@ bool key_is_down(enum sact_keycode code)
 	return key_state[code];
 }
 
+bool joy_key_is_down(uint8_t code)
+{
+	// Default SACT key mapping in comments below
+	switch (code) {
+	case 1: // Left Arrow
+		return joybutton_state[SDL_CONTROLLER_BUTTON_DPAD_LEFT];
+	case 2: // Right Arrow
+		return joybutton_state[SDL_CONTROLLER_BUTTON_DPAD_RIGHT];
+	case 3: // Up Arrow
+		return joybutton_state[SDL_CONTROLLER_BUTTON_DPAD_UP];
+	case 4: // Down Arrow
+		return joybutton_state[SDL_CONTROLLER_BUTTON_DPAD_DOWN];
+	case 5: // Esc
+		return joybutton_state[SDL_CONTROLLER_BUTTON_BACK] || joybutton_state[SDL_CONTROLLER_BUTTON_START];
+	case 6: // Enter
+		return joybutton_state[SDL_CONTROLLER_BUTTON_A];
+	case 7: // Space
+		return joybutton_state[SDL_CONTROLLER_BUTTON_Y];
+	case 8: // Ctrl
+		return joybutton_state[SDL_CONTROLLER_BUTTON_B];
+	case 9: // a
+		return joybutton_state[SDL_CONTROLLER_BUTTON_LEFTSTICK];
+	case 10: // z
+		return joybutton_state[SDL_CONTROLLER_BUTTON_RIGHTSTICK];
+	case 11: // Page Up
+		return joybutton_state[SDL_CONTROLLER_BUTTON_LEFTSHOULDER];
+	case 12: // Page Down
+		return joybutton_state[SDL_CONTROLLER_BUTTON_RIGHTSHOULDER];
+	default:
+		return false;
+	}
+}
+
 void key_clear_flag(void)
 {
 	for (int i = 0; i < VK_NR_KEYCODES; i++) {
@@ -160,8 +197,16 @@ void key_clear_flag(void)
 	}
 }
 
+void joy_clear_flag(void)
+{
+	for (int i = 0; i < SDL_CONTROLLER_BUTTON_MAX; i++) {
+		joybutton_state[i] = false;
+	}
+}
+
 void mouse_get_pos(int *x, int *y)
 {
+	SDL_PumpEvents();
 	SDL_GetMouseState(x, y);
 }
 
@@ -199,6 +244,14 @@ static void mouse_event(SDL_MouseButtonEvent *e)
 		key_state[code] = e->state == SDL_PRESSED;
 }
 
+static void controller_button_event(SDL_ControllerButtonEvent *e)
+{
+	if (e->state != SDL_PRESSED) {
+		NOTICE("UNPRESSED");
+	}
+	joybutton_state[e->button] = e->state == SDL_PRESSED;
+}
+
 static void(*input_handler)(const char*);
 static void(*editing_handler)(const char*, int, int);
 
@@ -264,6 +317,14 @@ void handle_events(void)
 		case SDL_MOUSEWHEEL:
 			wheel_dir = e.wheel.y;
 			break;
+		case SDL_CONTROLLERDEVICEADDED:
+			if (e.cdevice.which < MAX_CONTROLLERS)
+				controllers[e.cdevice.which] = SDL_GameControllerOpen(e.cdevice.which);
+			break;
+		case SDL_CONTROLLERBUTTONUP:
+		case SDL_CONTROLLERBUTTONDOWN:
+			controller_button_event(&e.cbutton);
+			break;
 		case SDL_TEXTINPUT:
 			if (input_handler)
 				input_handler(e.text.text);

src/system4.c

@@ -51,6 +51,7 @@ struct config config = {
 	.view_height = 600,
 	.mixer_nr_channels = 0,
 	.mixer_channels = NULL,
+	.joypad = false,
 };
 
 char *unix_path(const char *path)
@@ -348,9 +349,10 @@ static void usage(void)
 	puts("    -a, --audit        Audit AIN file for xsystem4 compatibility");
 	puts("        --font-mincho  Specify the path to the mincho font to use");
 	puts("        --font-gothic  Specify the path to the gothic font to use");
+	puts("    -j, --joypad       Enable joypad");
 	puts("        --nodebug      Disable debugger");
 #ifdef DEBUGGER_ENABLED
-	puts("        --debug    Start in debugger");
+	puts("        --debug        Start in debugger");
 #endif
 }
 
@@ -359,6 +361,7 @@ enum {
 	LOPT_AUDIT,
 	LOPT_FONT_MINCHO,
 	LOPT_FONT_GOTHIC,
+	LOPT_JOYPAD,
 	LOPT_NODEBUG,
 #ifdef DEBUGGER_ENABLED
 	LOPT_DEBUG,
@@ -384,13 +387,14 @@ int main(int argc, char *argv[])
 			{ "audit",       no_argument,       0, LOPT_AUDIT },
 			{ "font-mincho", required_argument, 0, LOPT_FONT_MINCHO },
 			{ "font-gothic", required_argument, 0, LOPT_FONT_GOTHIC },
+			{ "joypad",      no_argument,       0, LOPT_JOYPAD },
 			{ "nodebug",     no_argument,       0, LOPT_NODEBUG },
 #ifdef DEBUGGER_ENABLED
 			{ "debug",       no_argument,       0, LOPT_DEBUG },
 #endif
 		};
 		int option_index = 0;
-		int c = getopt_long(argc, argv, "ha", long_options, &option_index);
+		int c = getopt_long(argc, argv, "haj", long_options, &option_index);
 		if (c == -1)
 			break;
 
@@ -409,6 +413,10 @@ int main(int argc, char *argv[])
 		case LOPT_FONT_GOTHIC:
 			font_gothic = optarg;
 			break;
+		case 'j':
+		case LOPT_JOYPAD:
+			config.joypad = true;
+			break;
 #ifdef DEBUGGER_ENABLED
 		case LOPT_NODEBUG:
 			dbg_enabled = false;

src/video.c

@@ -175,7 +175,10 @@ static int gl_initialize(void)
 
 int gfx_init(void)
 {
-	if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO) < 0)
+	uint32_t flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO;
+	if (config.joypad)
+		flags |= SDL_INIT_GAMECONTROLLER;
+	if (SDL_Init(flags) < 0)
 		ERROR("SDL_Init failed: %s", SDL_GetError());
 
 #ifdef USE_GLES