javascript_playground/draw/index2.html at master · mohamedale/javascript_playground · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        canvas {
            border: 8px dashed greenyellow;
            background:black;
            height:90%;
            width:60%;

        }
        html, body {
            background:black;
            margin:0;
            height:100%;
            text-align:  center;
        }
    </style>
</head>
<body>
    <canvas></canvas>

    <script>
    const cBattlefield = document.querySelector("canvas")
    const context = cBattlefield.getContext("2d")

    class Battleship {
        constructor (context, color = "red"){
            this.context = context;
            this.color = color;
            this.w = 20;
            this.h = 10;
        }

        center() {
            this.x = this.context.canvas.width/2 - this.w;
            this.y = this.context.canvas.height - this.h;
        }
        draw() {
            this.context.fillStyle = this.color
            this.context.fillRect(this.x,this.y,this.w, this.h)
        }
    }

    class Alien {
        constructor (context, color = "purple") {
            this.context = context;
            this.color = color;

        }
    }

    //draw battleship

    const battleship = new Battleship(context, "red")
    battleship.center();
    battleship.draw()

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