Collisions without physics

Questions & Answers
1

Hi!

I’m trying to make the simplest platformer prototype with the simplest physics (falling with gravity, moving left and right, and (maybe) jump). For example:

	void Move () {
		if (!isDying || !isDead || !isShooting || !isFalling)
		{
			float amountToMove = Time.deltaTime * Input.GetAxis("Horizontal") * playerSpeed;
			transform.Translate(Vector3.right * amountToMove);
		}
	}
		
	void ApplyGravity() {
		
		float amountToMove = Time.deltaTime * gravity;
		transform.Translate(Vector3.down * amountToMove);
		
	}

The problem is i don’t know how to make collisions without physics and with isKinematic enabled. The only thing i know is to use a OnTriggerEnter function, so added a isTrigger to all objects and wrote (Hero.cs):

	void OnTriggerEnter (Collider otherGameObjectCollider) {
		if (otherGameObjectCollider.gameObject.tag == "ground") {
			Debug.Log("ground/wall collision");
		}
	}

I know that i need stop my hero to prevent falling (walking) through the ground but i really can’t think it out.

Sorry for the dumb question.

2

in the OnTriggerEnter function you could set your gravity variable equal to 0. That way the amountToMove would equal 0 and your player wouldn’t be moving the downward direction.