game engine test

js/motion.js

@@ -0,0 +1,29 @@
+let keys = [];
+let vel = [0, 0];
+
+let id = '';
+
+function down(e) {
+    keys[e.key.toLowerCase()] = true;
+};
+
+function up(e) {
+    keys[e.key.toLowerCase()] = false;
+};
+
+function move() {
+    var isShift = keys['q'];
+    vel[0] += ((keys['a'] ? 1 : 0) - (keys['d'] ? 1 : 0)) * (isShift ? 5 : 1);
+    vel[1] += ((keys['w'] ? 1 : 0) - (keys['s'] ? 1 : 0)) * (isShift ? 5 : 1);
+
+    vel[0] *= 0.8;
+    vel[1] *= 0.8;
+
+    game.camera[0] -= vel[0] * 0.2;
+    game.camera[1] -= vel[1] * 0.2;
+}
+
+setInterval(move, 10);
+
+window.addEventListener('keydown', down);
+window.addEventListener('keyup', up);