Advanced Unity Sushi

Powerup!

You can have players get a bonus when they pick up a blue coin! Lets speed them up for 5 seconds.

To create a powerup you should make a method (a function in a class). A powerup controls your player so it makes sense to put the method in the PlayerController class.

  • So add this function to the PlayerController class: 
    void powerupSpeedUp(Player player)
{
  player.powerupTimeLeft -= Time.deltaTime;
  if (player.powerupTimeLeft > 0)
      player.movespeed = 5f;
  else
      player.movespeed = 2f;
}

What does the code do?

This checks the player’s powerup time left and makes the player faster if the time left is greater than 0.

The first line decreases the timer.

  • Now you need to set the player’s powerupTimeLeft to five seconds when you collide with it. So, you’ll need to change the “Collisions” script.

The powerup coins are tagged as “powerup”. So, you can use that to determine if a player collided with a powerup.

  • Add this code to the OnCollisionEnter2D() function in the “Collisions” script:
if (col.gameObject.tag == "powerup")
{
    Destroy(col.gameObject);
    if (animal == "cat")
    {
        GameObject.Find("Platform").GetComponent<PlayerController>().cat.powerupTimeLeft = powerupTime;
    }
    if (animal == "dog")
    {
        GameObject.Find("Platform").GetComponent<PlayerController>().dog.powerupTimeLeft = powerupTime;
    }
}

What does the code do?

The if statements check which animal collided with the powerup then set that animal’s powerupTimeLeft to five seconds.

And that’s it, you’ve made the power ups do something!

  • Test out your new speed when you pick up a powerup.
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