Coding is Easy! – Lab 6 Help

Lab 6 – Lifeline
<!DOCTYPE html>
<html>
<body>

<canvas id="gameCanvas" width="600" height="300" style="border-style: solid; border-width: 2px; border-color: black;"></canvas>

<p>
  <button id="startBtn" onclick="start()">Start</button>
</p>

<h1>
  My First Game
</h1>

<script>
// 1. Variables
var loopid;
var timer = 0;
var timeout = 600;
fly_img.src = "https://icode2019posbchallenge.files.wordpress.com/2021/04/fly.png";
var swat_img = new Image;
swat_img.src = "https://icode2019posbchallenge.files.wordpress.com/2021/04/swat.png";

// 2. Frame
function frame(){
  update();
  render();
}

// 3. Update
function update(){
  //increase timer every frame
  timer = timer + 1;
}

// 4. Render
function render(){
  // clear the canvas
  drawFilledRect(0, 0, 600, 300, "white");
  // display Time Bar
  drawTimeBar(timer);

  //if time ran out 
  if (timer >= timeout){
    drawText("Game Over!",450,300);
    stop();
  }
}

// 5. Start
function start(){
  //Prevent multiple loops
  if (loopid != null){
    stop();
  }

  // where to draw
  canvas = document.getElementById("gameCanvas");
  ctx = canvas.getContext('2d');
  
  // Reset
  timer = 0;

  // Run frame every 50 ms
  loopid = setInterval(frame,50);
}

// 6. Stop 
function stop(){
  clearInterval(loopid);
}

// 7. Mouse Move

// 8. Mouse Click

// 9. Filled Rectangle
function drawFilledRect(x, y, width, height, color){
  ctx.fillStyle = color;
  ctx.fillRect(x, y, width, height);
}

// 10. Draw Text
function drawText(text,x,y){
  ctx.fillStyle = "black";
  ctx.font = "30px fantasy";
  ctx.fillText(text, x, y);
}

// 11. Draw Fly

// 12. Draw Swatter

// 13. Draw Time Bar
function drawTimeBar(t){
  ctx.fillStyle = "red";
  ctx.fillRect(0, 0, t, 10);
}

// 14. Random Number

</script>


</body>
</html>
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