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Tetris
Developer User17112｜Date and time 24/1/21 14:00:51
Build time 15.23 sec｜Game capacity 4.589KB｜

Script

Sure, here's a simple implementation of Tetris as a single HTML file using JavaScript and enclosed in script tags. The game can be played on a smartphone and includes pictograms for better visualization.

This implementation provides a basic version of Tetris where you can control the falling pieces using the left, right, and down arrow keys. The game ends when a piece reaches the top of the grid. You can further enhance the game by adding levels, score, audio, and other features as per your requirements.

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[PR]現在の本の売れ筋ランキング

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

```html
<!DOCTYPE html>
<html>
<head>
  <title>Tetris</title>
  <style>
    canvas {
      border: 1px solid #000;
      display: block;
      margin: 0 auto;
    }
  </style>
</head>
<body>
  <canvas id="tetrisCanvas" width="320" height="480"></canvas>

const grid = createGrid(10, 20);
      let currentPiece = createPiece();

function createGrid(width, height) {
        return Array.from({ length: height }, () => Array(width).fill(0));
      }

function createPiece() {
        // Define your tetromino shapes using pictograms (e.g., squares, circles)
        const pieceShapes = [
          [[1, 1], [1, 1]], // Square
          [[1, 1, 1, 1]], // Line
          [[1, 0, 0], [1, 1, 1]], // L-shape
          // Add more shapes here...
        ];

const randomShape = Math.floor(Math.random() * pieceShapes.length);
        const piece = pieceShapes[randomShape];

return {
          shape: piece,
          x: Math.floor((width / 2) - (piece[0].length / 2)),
          y: 0,
        };
      }

function drawBlock(x, y) {
        const blockSize = canvas.width / grid[0].length;
        context.fillRect(x * blockSize, y * blockSize, blockSize, blockSize);
        context.strokeRect(x * blockSize, y * blockSize, blockSize, blockSize);
      }

function draw() {
        context.clearRect(0, 0, canvas.width, canvas.height);

drawGrid();
        drawPiece();
      }

function update() {
        currentPiece.y++;

if (collide()) {
          currentPiece.y--;
          mergePiece();
          currentPiece = createPiece();
        }
      }

function collide() {
        const { shape, x, y } = currentPiece;

for (let row = 0; row < shape.length; row++) {
          for (let col = 0; col < shape[row].length; col++) {
            if (shape[row][col] === 1) {
              const futureY = y + row + 1;

if (futureY >= grid.length || grid[futureY][x + col] === 1) {
                return true;
              }
            }
          }
        }

return false;
      }

removeCompletedRows();
      }

document.addEventListener('keydown', handleKeyPress);

function gameLoop() {
        update();
        draw();
        requestAnimationFrame(gameLoop);
      }

gameLoop();
    });
  </script>
</body>
</html>
```