From 1b6a7e0d00703e3da2e1620b5a2b2cba027161de Mon Sep 17 00:00:00 2001
From: Joris
Date: Tue, 28 Jan 2020 09:55:58 +0100
Subject: Implement game of life

---
 src/game_loop.rs | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 src/game_loop.rs

(limited to 'src/game_loop.rs')

diff --git a/src/game_loop.rs b/src/game_loop.rs
new file mode 100644
index 0000000..34dd477
--- /dev/null
+++ b/src/game_loop.rs
@@ -0,0 +1,31 @@
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use wasm_bindgen::prelude::Closure;
+use wasm_bindgen::JsCast;
+
+use crate::game::Game;
+
+pub fn run(game: Game, update_period: i32) {
+    game.render();
+
+    let f = Rc::new(RefCell::new(None));
+    let g = f.clone();
+
+    *g.borrow_mut() = Some(Closure::wrap(Box::new(move |_| {
+
+        game.update();
+        game.render();
+
+        set_timeout(f.borrow().as_ref().unwrap(), update_period);
+
+    }) as Box<dyn FnMut(i32)>));
+
+    set_timeout(g.borrow().as_ref().unwrap(), update_period);
+}
+
+fn set_timeout(f: &Closure<dyn FnMut(i32)>, timeout: i32) {
+    web_sys::window().unwrap()
+        .set_timeout_with_callback_and_timeout_and_arguments_0(f.as_ref().unchecked_ref(), timeout)
+        .unwrap();
+}
-- 
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