Unity FPS Controller

!UnityFPSController.md

Unity FPS Controller

Please use Tree to get an idea of the required tree structure. Every node in Tree can be found as an image.

In addition, custom components(scripts) are also included.

00-Tree.png

01-Player.png

02-Main Camera.png

03-Cylinder.png

04-GroundCheck.png

05-PlayerMovement.cs

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

public class PlayerMovement : MonoBehaviour {
	public float speed = 12f;
	public float gravity = -9.81f;
	public float jumpHeight = 3f;

	public Transform groundCheck;
	public float groundDistance = 0.4f;
	public LayerMask groundMask;

	private CharacterController characterController;
	private Vector3 velocity = Vector3.zero;
	private bool onGround;

	private void Start() {
		this.characterController = this.GetComponent<CharacterController>();

		// find the GroundCheck
		foreach (Transform child in this.transform) {
			if (child.name == "GroundCheck") {
				// use selected groundCheck position
				this.groundCheck = child;
			} else {
				// or create a new one if none is found
				GameObject groundCheckGO = new GameObject("GroundCheck");
				groundCheckGO.transform.position = Vector3.down;
				groundCheckGO.transform.SetParent(this.transform);
			}
		}
	}

	private void Update() {
		// create a sphere, and check for collisions within the sphere
		this.onGround = Physics.CheckSphere(
			this.groundCheck.position,
			this.groundDistance,
			this.groundMask
		);

		if (this.onGround && this.velocity.y < 0f) {
			// please check https://youtu.be/_QajrabyTJc?t=1206 for more info
			this.velocity.y = -2f;
		}

		Vector3 input = new Vector3(Input.GetAxis("Horizontal"), 0f, Input.GetAxis("Vertical"));
		Vector3 movement = (
			input.x * transform.right   +
			input.y * transform.up      +
			input.z * transform.forward
		).normalized;

		// simple movement
		this.characterController.Move(movement * speed * Time.deltaTime);

		// jump
		if (Input.GetButton("Jump") && this.onGround) {
			velocity.y = Mathf.Sqrt(-2f * this.jumpHeight * this.gravity);
		}


		// add the gravity
		this.velocity.y += (this.gravity / 2) * Time.deltaTime;

		// move character while touching ground
		this.characterController.Move(velocity * Time.deltaTime);
	}
}

06-MouseLook.cs

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

public class MouseLook : MonoBehaviour {
	public float sensitivity = 100f;

	private Transform playerBody;
	private float xRotation = 0f;

	private void Start() {
		this.playerBody = this.transform.parent;

		// hide and lock cursor position
		Cursor.lockState = CursorLockMode.Locked;
	}

	private void Update() {
		Vector2 mouseInput = new Vector2(
			Input.GetAxis("Mouse X"),
			Input.GetAxis("Mouse Y")
		) * this.sensitivity * Time.deltaTime;

		// apply y
		this.xRotation -= mouseInput.y;
		// clamp y
		this.xRotation = Mathf.Clamp(this.xRotation, -90f, 90f);
		// rotate
		this.transform.localRotation = Quaternion.Euler(this.xRotation, 0f, 0f);

		// rotate parent instead of camera for x
		this.playerBody.Rotate(Vector3.up * mouseInput.x);
	}
}