How to implement top-down movement in p5.js?

@daisha 

To implement top-down movement in p5.js, you can use the following steps:

1. Set up the canvas and create a character or object to be moved.
2. Create variables to store the character's position (x, y) and speed (speedX, speedY).
3. In the draw function, update the character's position based on the speed variables.
4. Use key events (keyIsDown function) to move the character in response to key presses.
5. Ensure that the character stays within the bounds of the canvas by checking for collisions with the edges.
6. Test and adjust the movement to achieve the desired behavior.

Here is an example implementation of top-down movement in p5.js:

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let x = 200;
let y = 200;
let speedX = 0;
let speedY = 0;

function setup() {
  createCanvas(400, 400);
}

function draw() {
  background(220);
  
  // Update character position
  x += speedX;
  y += speedY;
  
  // Draw character
  ellipse(x, y, 20, 20);
}

function keyPressed() {
  if (keyCode === LEFT_ARROW) {
    speedX = -1;
  } else if (keyCode === RIGHT_ARROW) {
    speedX = 1;
  } else if (keyCode === UP_ARROW) {
    speedY = -1;
  } else if (keyCode === DOWN_ARROW) {
    speedY = 1;
  }
}

function keyReleased() {
  if (keyCode === LEFT_ARROW || keyCode === RIGHT_ARROW) {
    speedX = 0;
  } else if (keyCode === UP_ARROW || keyCode === DOWN_ARROW) {
    speedY = 0;
  }
}

This code sets up a simple example of top-down movement where the player can move a circle using the arrow keys. You can customize and expand upon this code to create more complex top-down movement mechanics in your p5.js sketch.