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No:34066

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Sandbox game
Developer User16028｜Date and time 24/1/8 3:20:48
Build time 19.855 sec｜Game capacity 2.478KB｜

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[PR]現在の欲しいゲームランキング

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

<!DOCTYPE html>
<html>
<head>
    <title>Sandbox Game</title>
    <style>
        canvas {
            border: 1px solid black;
            background-color: #f5f5f5;
        }
        body {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
            margin: 0;
        }
    </style>
</head>
<body>
    <canvas id="sandbox"></canvas>

// Canvas setup
        const canvas = document.getElementById('sandbox');
        const ctx = canvas.getContext('2d');
        const canvasWidth = 400;
        const canvasHeight = 400;
        const cellSize = 40;
        const numRows = canvasHeight / cellSize;
        const numCols = canvasWidth / cellSize;

canvas.width = canvasWidth;
        canvas.height = canvasHeight;

// Variables
        let grid = createEmptyGrid();

// Event listeners
        canvas.addEventListener('click', handleMouseClick);

// Functions

// Create an empty grid
        function createEmptyGrid() {
            let emptyGrid = new Array(numRows);
            for (let row = 0; row < numRows; row++) {
                emptyGrid[row] = new Array(numCols).fill(0);
            }
            return emptyGrid;
        }

// Draw pictogram
        function drawPictogram(row, col) {
            ctx.fillStyle = '#000000';
            ctx.fillRect(col * cellSize, row * cellSize, cellSize, cellSize);
        }

// Erase pictogram
        function erasePictogram(row, col) {
            ctx.clearRect(col * cellSize, row * cellSize, cellSize, cellSize);
        }

// Handle mouse click event
        function handleMouseClick(event) {
            const rect = canvas.getBoundingClientRect();
            const mouseX = event.clientX - rect.left;
            const mouseY = event.clientY - rect.top;

const col = Math.floor(mouseX / cellSize);
            const row = Math.floor(mouseY / cellSize);

// If the clicked cell is empty, draw pictogram; if it already contains a pictogram, erase it
            if (grid[row][col] === 0) {
                drawPictogram(row, col);
                grid[row][col] = 1;
            } else {
                erasePictogram(row, col);
                grid[row][col] = 0;
            }
        }
    </script>
</body>
</html>