using UnityEngine;
using System.Collections;

public class pushPlayer : MonoBehaviour {

    public float gravity = 300.0F;      // HOW MUCH GRAVITY IS APPLIED?
    public int _dirGravity = 0;         // WHICH WAY IS GRAVITY FACING?
    public float speedRotation = 2F;    // HOW FAST CAN WE ROTATE THE CHARACTER?
    public bool isGrounded = false;     // ARE WE ON A SURFACE?
    public float jumpSpeed = 300.0F;    // HOW HIGH CAN WE JUMP?

    void FixedUpdate() {
        // CHANGE THE GRAVITY DIRECTION WITH KEYS
        if(Input.GetKeyDown(KeyCode.Q))
            _dirGravity--;
        if(Input.GetKeyDown(KeyCode.E))
            _dirGravity++;
        if(_dirGravity > 5)
            _dirGravity = 0;
        else if(_dirGravity < 0)
            _dirGravity = 5;


        // DIRECTION OF GRAVITY
        switch(_dirGravity) {
            case 0:  // DOWN
                gravity = -500;
                Physics.gravity = new Vector3(0.0F,gravity * Time.deltaTime,0.0F);
                transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(0.0F,0.0F,0.0F), Time.deltaTime * speedRotation);
            break;
            case 1:  // UP
                gravity = 500;
                Physics.gravity = new Vector3(0.0F,gravity * Time.deltaTime,0.0F);
                transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(0.0F,0.0F,180.0F), Time.deltaTime * speedRotation);
            break;
            case 2:  // RIGHT
                gravity = -500;
                Physics.gravity = new Vector3(gravity * Time.deltaTime,0.0F,0.0F);
                transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(0.0F,0.0F,270.0F), Time.deltaTime * speedRotation);
            break;
            case 3:  // LEFT
                gravity = 500;
                Physics.gravity = new Vector3(gravity * Time.deltaTime,0.0F,0.0F);
            transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(0.0F,0.0F,90.0F), Time.deltaTime * speedRotation);
            break;
            case 4:  // BACKWARD
                gravity = -500;
                Physics.gravity = new Vector3(0.0F,0.0F,gravity * Time.deltaTime);
                transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(90.0F,0.0F,0.0F), Time.deltaTime * speedRotation);
            break;
            case 5:  // FORWARD
                gravity = 500;
                Physics.gravity = new Vector3(0.0F,0.0F,gravity * Time.deltaTime);
            transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.Euler(270.0F,0.0F,0.0F), Time.deltaTime * speedRotation);
            break;
        }

        // WHEN PLAYER NOT TOUCHING SURFACE
        if (!isGrounded){
            Vector3 dwn = transform.TransformDirection(Vector3.down);
            if (Physics.Raycast(transform.position, dwn, 0.5F)) {
                isGrounded = true;
            }
        }
        // WHEN PLAYER is TOUCHING SURFACE
        else {
            if(Input.GetButtonDown("Jump")) {

                // JUMP DEPENDING ON GRAVITY
                switch(_dirGravity) {
                case 0: // DOWN
                    rigidbody.AddForce(Vector3.up * jumpSpeed);
                    break;
                case 1: // UP
                    rigidbody.AddForce(Vector3.down * jumpSpeed);
                    break;
                case 2: // LEFT
                    rigidbody.AddForce(Vector3.right * jumpSpeed);
                    break;
                case 3: // RIGHT
                    rigidbody.AddForce(Vector3.left * jumpSpeed);
                    break;
                case 4: // BACKWARD
                    rigidbody.AddForce(Vector3.forward * jumpSpeed);
                    break;
                case 5: // FORWARD
                    rigidbody.AddForce(Vector3.back * jumpSpeed);
                    break;
                }

                isGrounded = false;
            }
        }
    }
}