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Daimajin Games
Developer User3494｜Date and time 23/6/18 2:57:47
Build time 27.879 sec｜Game capacity 4.406KB｜

Script

は、プレイヤーが大魔神を操作して敵キャラクターを倒していくアクションゲームです。スマホでも操作しやすく、絵文字を多く使用しています。以下が実際のプログラムです。

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[PR]現在の売れ筋ゲームランキング

Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <title>大魔神のゲーム</title>
    <style>
      canvas{
        border:2px solid #d3d3d3;
        background-color: #f1f1f1;
      }
    </style>
  </head>
  <body onload="game()">
    <canvas id="myCanvas" width="480" height="320"></canvas>
    <script>
      var canvas = document.getElementById("myCanvas");
      var ctx = canvas.getContext("2d");
      var x = canvas.width/2;
      var y = canvas.height-30;
      var dx = 5;
      var dy = -5;
      var ballRadius = 10;
      var paddleHeight = 10;
      var paddleWidth = 75;
      var paddleX = (canvas.width-paddleWidth)/2;
      var rightPressed = false;
      var leftPressed = false;

document.addEventListener("keydown", keyDownHandler, false);
      document.addEventListener("keyup", keyUpHandler, false);

function keyDownHandler(e) {
        if(e.key == "Right" || e.key == "ArrowRight") {
          rightPressed = true;
        }
        else if(e.key == "Left" || e.key == "ArrowLeft") {
          leftPressed = true;
        }
      }

function keyUpHandler(e) {
        if(e.key == "Right" || e.key == "ArrowRight") {
          rightPressed = false;
        }
        else if(e.key == "Left" || e.key == "ArrowLeft") {
          leftPressed = false;
        }
      }

function drawBall() {
        ctx.beginPath();
        ctx.arc(x, y, ballRadius, 0, Math.PI*2);
        ctx.fillStyle = "#0095DD";
        ctx.fill();
        ctx.closePath();
      }

function drawPaddle() {
        ctx.beginPath();
        ctx.rect(paddleX, canvas.height-paddleHeight, paddleWidth, paddleHeight);
        ctx.fillStyle = "#0095DD";
        ctx.fill();
        ctx.closePath();
      }

function draw() {
        ctx.clearRect(0, 0, canvas.width, canvas.height);
        drawBricks();
        drawBall();
        drawPaddle();
        collisionDetection();

if(x + dx > canvas.width-ballRadius || x + dx < ballRadius) {
          dx = -dx;
        }
        if(y + dy < ballRadius) {
          dy = -dy;
        }
        else if(y + dy > canvas.height-ballRadius) {
          if(x > paddleX && x < paddleX + paddleWidth) {
            dy = -dy;
          }
          else {
            alert("ゲームオーバー");
            document.location.reload();
            clearInterval(interval); //いらないかも
          }
        }

if(rightPressed && paddleX < canvas.width-paddleWidth) {
          paddleX += 7;
        }
        else if(leftPressed && paddleX > 0) {
          paddleX -= 7;
        }

x += dx;
        y += dy;
      }

var bricks = [];
      var brickRowCount = 3;
      var brickColumnCount = 5;
      var brickWidth = 75;
      var brickHeight = 20;
      var brickPadding = 10;
      var brickOffsetTop = 30;
      var brickOffsetLeft = 30;

for(var c=0; c<brickColumnCount; c++) {
        bricks[c] = [];
        for(var r=0; r<brickRowCount; r++) {
          bricks[c][r] = { x: 0, y: 0, status: 1 };
        }
      }

var interval = setInterval(draw, 10);

</script>
  </body>
</html>