input controls

Input.js

var gamejs = require('gamejs');

exports.UserControls = function(size, sticker) {
   this.size = size;
   this.sticker = sticker;
   this.left = false;
   this.right = false;
   this.paused = false;
   this.initialClick = false;
   
   this.handle = function(event) {
      if (event.type === gamejs.event.KEY_DOWN) {
         if (event.key === gamejs.event.K_LEFT) {
            this.left = true;
         } else if (event.key === gamejs.event.K_RIGHT) {
            this.right = true;
         } else if (event.key === gamejs.event.K_ESC) {
            this.paused = !this.paused;
         } else {
            console.debug(event.key);
         }
      } else if (event.type === gamejs.event.KEY_UP) {
         if (event.key === gamejs.event.K_LEFT) {
            this.left = false;
         } else if (event.key === gamejs.event.K_RIGHT) {
            this.right = false;
         } 
      } else if (event.type === gamejs.event.MOUSE_DOWN) {
         if ((event.pos[0] > 0 && event.pos[0] < this.size[0]) && (event.pos[1] > 0 && event.pos[1] < this.size[1])) {
            this.initialClick = true;
         }
      }
   }
   
   this.angle = function () {
      if (this.left) {
         return Math.PI;
      } else if (this.right) {
         return 0;
      }
      
      return null;
   }
   
   return this;
}