From b747ea18619926e1cff0252e0e7b2985b7868faa Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Mon, 17 Dec 2018 02:07:27 +0100
Subject: Add game state object shared across threads

---
 src/game.rs     | 15 +++++++++++++--
 src/graphics.rs | 25 +++++--------------------
 src/main.rs     | 41 ++++++++++++++++++++++++++++++++++++++---
 3 files changed, 56 insertions(+), 25 deletions(-)

diff --git a/src/game.rs b/src/game.rs
index 36ed4b8..ab04b21 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -1,4 +1,15 @@
+pub struct State {
+	pub running: bool
+}
+
+
+
+pub fn new() -> State {
+	return State {
+		running: true,
+	};
+}
+
+pub fn update(state: &mut State) {
 
-pub fn start() {
-	
 }
\ No newline at end of file
diff --git a/src/graphics.rs b/src/graphics.rs
index ca98946..003f182 100644
--- a/src/graphics.rs
+++ b/src/graphics.rs
@@ -1,6 +1,5 @@
 extern crate sfml;
 
-
 use sfml::window::{
 	ContextSettings,
 	Event,
@@ -13,20 +12,10 @@ use sfml::graphics::{
 	Color,
 };
 
-
-struct State {
-	running: bool
-}
-
-
-pub fn start() {
+pub fn start() -> RenderWindow {
 	let default_window_size = (1280, 720);
 	let default_framerate = 80;
 
-	let mut state = State {
-		running: true
-	};
-
 	let context_settings = ContextSettings {
 		antialiasing_level: 0,
 		..Default::default()
@@ -42,22 +31,18 @@ pub fn start() {
 	window.set_framerate_limit(default_framerate);
 	window.set_vertical_sync_enabled(true);
 
-
-	while state.running {
-		render(&mut window);
-		update(&mut window, &mut state);
-	}
+	return window;
 }
 
-fn render(window: &mut RenderWindow) {
+pub fn render(window: &mut RenderWindow) {
 	window.clear(&Color::BLACK);
 	window.display();
 }
 
-fn update(window: &mut RenderWindow, state: &mut State) {
+pub fn update(window: &mut RenderWindow) {
 	while let Some(ev) = window.poll_event() {
 		match ev {
-			Event::Closed => state.running = false,
+			Event::Closed => window.close(),
 			_ => {},
 		}
 	}
diff --git a/src/main.rs b/src/main.rs
index 2679ac4..e2353e7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,48 @@
 mod game;
 mod graphics;
 
+use std::thread;
+use std::sync::{Arc, Mutex};
 
 fn main() {
-	game::start();
+	let state_ = Arc::new(Mutex::new(game::new()));
 
-	let graphics_thread = std::thread::spawn(move || {
-		graphics::start();
+	let state = state_.clone();
+	let game_thread = thread::spawn(move || {
+		loop {
+			// aquire state resource
+			let mut state = match state.lock() {
+				Ok(state) => state,
+				Err(poisoned) => poisoned.into_inner(),
+			};
+
+			if state.running == false {
+				break;
+			}
+
+			game::update(&mut state);
+		}
+	});
+
+
+	let state = state_.clone();
+	let graphics_thread = thread::spawn(move || {
+		let mut window = graphics::start();
+
+		while window.is_open() {
+			graphics::render(&mut window);
+			graphics::update(&mut window);
+		}
+
+		// aquire state resource
+		let mut state = match state.lock() {
+			Ok(state) => state,
+			Err(poisoned) => poisoned.into_inner(),
+		};
+
+		state.running = false;
 	});
 
 	graphics_thread.join().unwrap();
+	game_thread.join().unwrap();
 }
-- 
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