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No:46194

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Partical life
Developer User18896｜Date and time 24/2/24 1:13:35
Build time 8.511 sec｜Game capacity 1.394KB｜

Script

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// Define particle object
function Particle(x, y, vx, vy, color) {
  this.x = x;
  this.y = y;
  this.vx = vx;
  this.vy = vy;
  this.color = color;
}

// Create an array to store particles
var particles = [];

// Create particles at random positions with random velocities
for (var i = 0; i < 100; i++) {
  var x = Math.random() * canvas.width;
  var y = Math.random() * canvas.height;
  var vx = Math.random() * 2 - 1;
  var vy = Math.random() * 2 - 1;
  
  particles.push(new Particle(x, y, vx, vy, 'red'));
}

// Update function to move and draw particles
function update() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
  
  particles.forEach(function(p) {
    p.x += p.vx;
    p.y += p.vy;
    
    // Wrap around the screen
    if (p.x > canvas.width) {
      p.x = 0;
    }
    if (p.x < 0) {
      p.x = canvas.width;
    }
    if (p.y > canvas.height) {
      p.y = 0;
    }
    if (p.y < 0) {
      p.y = canvas.height;
    }
    
    // Draw the particle
    ctx.fillStyle = p.color;
    ctx.beginPath();
    ctx.arc(p.x, p.y, 5, 0, Math.PI * 2);
    ctx.fill();
  });
  
  requestAnimationFrame(update);
}

// Start the game
update();
</script>