Particles that follow my finger's game

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No:26407

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Particles that follow my finger
Developer User12958｜Date and time 23/11/30 8:54:33
Build time 33.065 sec｜Game capacity 3.212KB｜

Script

Sure! Here's an example of a simple game that allows particles to follow your finger on a smartphone screen using JavaScript and pictograms. The implementation is provided as a single HTML file enclosed in script tags:

To try out this game, copy the above code into a new HTML file, save it with a `.html` extension, and open it in a web browser on your smartphone. You should be able to see particles following your finger as you move it on the screen.

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```html
<!DOCTYPE html>
<html>
<head>
  <style>
    #canvas {
      width: 100%;
      height: 100vh;
      background-color: #000;
      cursor: none;
    }
  </style>
</head>
<body>
  <canvas id="canvas"></canvas>

// Set the canvas dimensions to match the device's screen
      canvas.width = window.innerWidth;
      canvas.height = window.innerHeight;

// Variable to hold the particles
      let particles = [];

// Create a Particle class
      class Particle {
        constructor(x, y) {
          this.x = x;
          this.y = y;
          this.radius = 10;
          this.color = "#" + ((Math.random() * 0xffffff) << 0).toString(16); // Random color
        }

draw() {
          ctx.beginPath();
          ctx.arc(this.x, this.y, this.radius, 0, Math.PI * 2);
          ctx.fillStyle = this.color;
          ctx.fill();
        }

update(mouseX, mouseY) {
          this.x += (mouseX - this.x) * 0.2; // Adjust the speed at which the particles follow the finger
          this.y += (mouseY - this.y) * 0.2; // Adjust the speed at which the particles follow the finger

this.draw();
        }
      }

// Function to handle mouse movement
      function handleMouseMove(event) {
        const mouseX = event.clientX;
        const mouseY = event.clientY;

particles.forEach((particle) => {
          particle.update(mouseX, mouseY);
        });
      }

// Function to handle touch movement
      function handleTouchMove(event) {
        const touch = event.touches[0];
        const touchX = touch.clientX;
        const touchY = touch.clientY;

particles.forEach((particle) => {
          particle.update(touchX, touchY);
        });
      }

// Create initial particles
      for (let i = 0; i < 50; i++) {
        const x = Math.random() * canvas.width;
        const y = Math.random() * canvas.height;
        particles.push(new Particle(x, y));
      }

// Event listeners for mouse and touch movement
      canvas.addEventListener("mousemove", handleMouseMove);
      canvas.addEventListener("touchmove", handleTouchMove);

// Game loop to continuously update and redraw the particles
      function gameLoop() {
        ctx.clearRect(0, 0, canvas.width, canvas.height);

particles.forEach((particle) => {
          particle.update();
        });

requestAnimationFrame(gameLoop);
      }

// Start the game loop
      gameLoop();
    });
  </script>
</body>
</html>
```