1

Hey im making a 2d top down shooter and i just found out how to make my character shoot but he only shoots in one direction how do i make him shoot where my mouse is at?

Heres my code

Shooting:

using UnityEngine;
using System.Collections;

public class PlayerShooting : MonoBehaviour {

	public Vector3 bulletOffset = new Vector3(0, 0.5f, 0);

	public GameObject bulletPrefab;
	int bulletLayer;

	public float fireDelay = 0.25f;
	float cooldownTimer = 0;

	void Start() {
		bulletLayer = gameObject.layer;
	}

	// Update is called once per frame
	void Update () {
		cooldownTimer -= Time.deltaTime;

		if( Input.GetButton("Fire1") && cooldownTimer <= 0 ) {
			// SHOOT!
			cooldownTimer = fireDelay;

			Vector3 offset = transform.rotation * bulletOffset;

			GameObject bulletGO = (GameObject)Instantiate(bulletPrefab, transform.position + offset, transform.rotation);
			bulletGO.layer = bulletLayer;
		}
	}
}
2

What you’ll want here is to calculate the angle between the x axis, and the line made by the two points being your character and the mouse. The vector math behind this looks like this:

GameObject player;
Camera camera; //You need to set up your main camera here
float nextFire = 0;

void Update ()
{
    if (Input.GetButtomDown("Fire1") && Time.time > nextFire)
    {
        nextFire = Time.time + fireDelay;

        Vector2 characterPos = camera.WorldToScreenPoint(player.transform.position);
        Vector2 mousePos = Input.mousePosition;
        Vector2 xAxis = new Vector2 (0,1); //Represents direction of X-axis

        Vector2 newLine = new Vector2(mousePos.x-characterPos.x, mousePos.y-characterPos.y);
        float angle = Vector2.Angle(xAxis, newLine);
        Quaternion rotation = Quaternion.identity;
        rotation.eulerAngles = new Vector3(0, angle, 0); //Assuming it's top down, with only y rotations

        Gameobject obj = (GameObject) Instantiate(bulletPrefab, transform.position, rotation);
         obj.layer = bulletLayer;
    }
}