User Input

by soggydoughnut54

HTML

<canvas width="500" height="500" id="myCanvas"></canvas>

CSS

#myCanvas {
    border: 1px solid #000;
}

JavaScript

/*************
variables to make program work
*************/
//access the canvas
var canvas = document.getElementById('myCanvas');
//access drawing environment
var ctx = canvas.getContext("2d");
//create a new image

//variables for rectangles
var speed = 0;
var speedy = 0;
var key = -1;
var box = {
//variables that define the box
	color:"black",
	x:240,
  y:240,
  width:20,
  height:20,
  //function that tells the box to move
  move:function(){
  	this.x = this.x+speed;
    this.y = this.y+speedy;
  }
}

/***********
function for drawing stuff
************/
function draw() {
    //color for the background
    ctx.fillStyle = "maroon";
    //shape to fill in the background
    ctx.fillRect(0, 0, 500, 500);
    //draw the box
    ctx.fillStyle = box.color;
    ctx.fillRect(box.x, box.y, box.width, box.height);
    //write0 text to display the key
    ctx.fillStyle = "black";
    ctx.font = "30px Arial";
    ctx.fillText("Key: " + key, 10, 30);
    //move the box
    box.move();
    
    
    
}
////////////////////////////////////
//key inputs here
///////////////////////////////////
window.addEventListener("keydown", function(event) {
 //add event listener for key codes in here
key = event.keyCode;
if(key===65){
speed = -10;
    if (box.x >= 480)
      speed = 0;
}
key = event.keyCode;
if(key===68){
speed = 10;
}
key = event.keyCode;
if(key===87){
speedy = -10;
}
key = event.keyCode;
if(key===83){
speedy = 10;
}
  event.preventDefault();
}, true);
///////////////////////////////////////
//try to see if you can do it on key up
///////////////////////////////////////
window.addEventListener("keyup", function(event) {
 //add event listener for key codes in here
 key = event.keyCode;
 if(key===68){
 speed = 0
 }
 key = event.keyCode;
 if(key===65){
 speed = 0
 }
  key = event.keyCode;
 if(key===87){
 speedy = 0
 }
  key = event.keyCode;
 if(key===83){
 speedy = 0
 }
// Consume the event so it doesn't get handled twice
  event.preventDefault();
},...