From b7fec57c0463e58f1ad8db126ff4879f59b057d0 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Wed, 6 Jan 2016 21:39:15 +0100
Subject: Start implementing input handling

---
 src/view/InputHandler.ts | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 src/view/InputHandler.ts

(limited to 'src/view/InputHandler.ts')

diff --git a/src/view/InputHandler.ts b/src/view/InputHandler.ts
new file mode 100644
index 0000000..e39ffe0
--- /dev/null
+++ b/src/view/InputHandler.ts
@@ -0,0 +1,40 @@
+'use strict';
+
+
+import Direction from '../model/Direction';
+
+
+class InputHandler {
+        keys: {[key: number]: boolean} = {};
+
+        listeners: (() => void)[] = [];
+
+        private callListeners() {
+                this.listeners.forEach(l => l());
+        }
+
+        constructor() {
+                window.addEventListener('keydown', (ev) => {
+                        this.keys[ev.keyCode] = true;
+                        this.callListeners();
+                });
+
+                window.addEventListener('keyup', (ev) => {
+                        delete this.keys[ev.keyCode];
+                        this.callListeners();
+                });
+        }
+
+        addListener(l: () => void) {
+                this.listeners.push(l);
+        }
+}
+
+module InputHandler {
+        export const Left = 37;
+        export const Up = 38;
+        export const Right = 39;
+        export const Down = 40;
+};
+
+export default InputHandler;
-- 
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