Trying to make it so when the enemy collides with the player, the enemy dies, and the player is damaged.

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I’m trying to make it so so when the enemy touches the player, the player gets hurt, and the enemy dies. But the player in this case is a plant (theres a player which is guarding plants from mosquitos, and if the plant gets hit, the enemy dies, and the plant gets damaged.) I dont quite understand 0nTriggerEnter2D, and I haven’t found any tutorials that helped. I don’t fully want you to write the code for me, just help me understand it better. Heres my code.
public float health = 2f;

   void PlantDeath()
   {
      Destroy()
   }

   void OnTriggerEnter2D(Collider2D col)
   {
       // if collider is enemy, subtracts 1 hp
        if (other.gameObject.tag == ("Enemy"))
        {
            health -= 1f;
         
          // when hit, changes color
           SpriteRenderer sr;
           sr = gameObject.GetComponent<SpriteRenderer>() as SpriteRenderer;
          sr.color = new Color(243, 134, 1);

         other.GameObject.health -= 5000;
         if (health <= 0)
         {
              PlantDeath()
         }
     }
  }
}

1 Answer

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Hey!
In line 18 lies your problem.
If you’re trying to decrease health from a certain object, you need to access the script where the health parameter lies and decrease it from there.
Just as you did with changing colors- you accessed the SpriteRenderer component inside the current gameobject, then accessed the color parameter and then changed it.
Writing other.GameObject.health -= 5000; is equivalent to if you wrote gameobject.color = new color… in order to change your gameobject’s color.
So if we want to decrease health from the enemy,

  1. The health variable needs to be public (or private with a get and set). So make sure its declared as a public variable in the enemy health script.
  2. Get the script which contains the enemy health, access the health variable and decrease its value: other.GameObject.GetComponent< EnemyHealthScript>().health -= 5000f;