PLAYER SCRIPT

SCRIPT NEEDS TO ACCOMPLISH...

• User Input --> Left Mouse Click

  • Fire Raycast from Mouse position

    • If collides with object, gather data

    • If object is a cube, modify color

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.InputSystem;

public class MultiColorChangeClick : MonoBehaviour
{
    void Update()
    {
        if (Mouse.current.leftButton.wasPressedThisFrame)
        {
            Vector2 mousePos = Mouse.current.position.ReadValue();
            Ray rayOrigin = Camera.main.ScreenPointToRay(mousePos);
            RaycastHit hitInfo;


            if (Physics.Raycast(rayOrigin, out hitInfo))
            {
                MeshRenderer hitRender = hitInfo.collider.GetComponent<MeshRenderer>();

                if (hitRender == null)
                    return;



                switch (hitInfo.collider.tag)
                {
                    case "Cube":
                        hitRender.material.color = Random.ColorHSV();
                        break;
                    case "Sphere":
                        break;
                }
            }
        }
    }
}

CODE BREAKDOWN

• LINE 10 - 35 ==> If statement that is ran when the user presses the left mouse button

  • LINE 12 --> Creates a Vector2 type variable to hold the position of the mouse

  • LINE 13 --> Defines the starting point of the ray [rayOrigin]

  • LINE 14 --> Structure used to get information back from a raycast collision [RaycastHit]
• LINE 17-34 ==> If statement that returns true when the ray intersects into any collider [Raycast Declaration]

  • LINE 19 --> Statement that access the hitInfo Structure to extract the mesh render on the gameobject the raycast collided with. Stores the mesh renderer within a variable.
  • LINE 21-22 --> If statement that tells the program to do nothing if the variable hitRender is null

  • LINE 26-33 --> Switch statement to run the correct code according to the tag stored within the hitInfo structure.

    • If tag matches case Cube --> change the color

    • If tag matches case Sphere --> Do nothing