How to trigger key events in p5.js?

@denis 

In p5.js, you can trigger key events using the keyIsPressed function along with key codes or key names. Here is a simple example of triggering key events in p5.js:

1. Get the key code or key name of the key you want to trigger an event for. You can find key codes for different keys here: https://keycode.info/
2. Use the keyPressed() function in your p5.js sketch to check if a specific key is being pressed. You can use the keyCode variable within the function to get the key code of the key being pressed.
3. Use the keyIsPressed() function along with the key code or key name to trigger events based on key presses. Here is an example code snippet to trigger an event when the 'A' key is pressed:

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

function draw() {
  background(220);
  
  if (keyIsPressed && key == 'A') {
    // Trigger an event when the 'A' key is pressed
    fill(255, 0, 0);
    rect(50, 50, 100, 100);
  }
}

You can modify this code snippet to trigger events for different keys by changing the key code or key name in the if statement.