From 209c1fd627c4bb56b87f91dbe30c18a1c7fe75a5 Mon Sep 17 00:00:00 2001
From: Dominic Szablewski <dominic@phoboslab.org>
Date: Sun, 27 Aug 2023 12:52:58 +0200
Subject: [PATCH] Add ALT+Enter hotkey to toggle fullscreen; close #45

---
 src/platform.h       |  1 +
 src/platform_sdl.c   | 15 ++++++++++++++-
 src/platform_sokol.c | 15 ++++++++++++++-
 src/wipeout/game.c   |  7 +++++++
 4 files changed, 36 insertions(+), 2 deletions(-)

diff --git a/src/platform.h b/src/platform.h
index bcb8b0e..2a21894 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -6,6 +6,7 @@
 void platform_exit();
 vec2i_t platform_screen_size();
 double platform_now();
+bool platform_get_fullscreen();
 void platform_set_fullscreen(bool fullscreen);
 void platform_set_audio_mix_cb(void (*cb)(float *buffer, uint32_t len));
 
diff --git a/src/platform_sdl.c b/src/platform_sdl.c
index 4d45c46..a702e5a 100755
--- a/src/platform_sdl.c
+++ b/src/platform_sdl.c
@@ -61,8 +61,17 @@ SDL_GameController *platform_find_gamepad() {
 void platform_pump_events() {
 	SDL_Event ev;
 	while (SDL_PollEvent(&ev)) {
+		// Detect ALT+Enter press to toggle fullscreen
+		if (
+			ev.type == SDL_KEYDOWN && 
+			ev.key.keysym.scancode == SDL_SCANCODE_RETURN &&
+			(ev.key.keysym.mod & (KMOD_LALT | KMOD_RALT))
+		) {
+			platform_set_fullscreen(!platform_get_fullscreen());
+		}
+
 		// Input Keyboard
-		if (ev.type == SDL_KEYDOWN || ev.type == SDL_KEYUP) {
+		else if (ev.type == SDL_KEYDOWN || ev.type == SDL_KEYUP) {
 			int code = ev.key.keysym.scancode;
 			float state = ev.type == SDL_KEYDOWN ? 1.0 : 0.0;
 			if (code >= SDL_SCANCODE_LCTRL && code <= SDL_SCANCODE_RALT) {
@@ -179,6 +188,10 @@ double platform_now() {
 	return (double)perf_counter / (double)perf_freq;
 }
 
+bool platform_get_fullscreen() {
+	return SDL_GetWindowFlags(window) & SDL_WINDOW_FULLSCREEN;
+}
+
 void platform_set_fullscreen(bool fullscreen) {
 	if (fullscreen) {
 		int32_t display = SDL_GetWindowDisplayIndex(window);
diff --git a/src/platform_sokol.c b/src/platform_sokol.c
index ef1087e..709fb43 100644
--- a/src/platform_sokol.c
+++ b/src/platform_sokol.c
@@ -155,6 +155,10 @@ double platform_now() {
 	return stm_sec(stm_now());
 }
 
+bool platform_get_fullscreen() {
+	return sapp_is_fullscreen();
+}
+
 void platform_set_fullscreen(bool fullscreen) {
 	if (fullscreen == sapp_is_fullscreen()) {
 		return;
@@ -165,8 +169,17 @@ void platform_set_fullscreen(bool fullscreen) {
 }
 
 void platform_handle_event(const sapp_event* ev) {
+	// Detect ALT+Enter press to toggle fullscreen
+	if (
+		ev->type == SAPP_EVENTTYPE_KEY_DOWN && 
+		ev->key_code == SAPP_KEYCODE_ENTER &&
+		(ev->modifiers & SAPP_MODIFIER_ALT)
+	) {
+		platform_set_fullscreen(!sapp_is_fullscreen());
+	}
+
 	// Input Keyboard
-	if (ev->type == SAPP_EVENTTYPE_KEY_DOWN || ev->type == SAPP_EVENTTYPE_KEY_UP) {
+	else if (ev->type == SAPP_EVENTTYPE_KEY_DOWN || ev->type == SAPP_EVENTTYPE_KEY_UP) {
 		float state = ev->type == SAPP_EVENTTYPE_KEY_DOWN ? 1.0 : 0.0;
 		if (ev->key_code > 0 && ev->key_code < sizeof(keyboard_map)) {
 			int code = keyboard_map[ev->key_code];
diff --git a/src/wipeout/game.c b/src/wipeout/game.c
index b7acadd..4066c16 100755
--- a/src/wipeout/game.c
+++ b/src/wipeout/game.c
@@ -620,6 +620,13 @@ void game_update() {
 		game_scenes[scene_current].update();
 	}
 
+	// Fullscreen might have been toggled through alt+enter
+	bool fullscreen = platform_get_fullscreen();
+	if (fullscreen != save.fullscreen) {
+		save.fullscreen = fullscreen;
+		save.is_dirty = true;
+	}
+
 	if (save.is_dirty) {
 		// FIXME: use a text based format?
 		// FIXME: this should probably run async somewhere