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

public class GameCamera : MonoBehaviour {

	public float smooth;
	public float moveSpeed;

	public Transform tablePlane;

	private Vector3 currentVelocity;
	private Rect tableBounds;

	private void Awake() {
		if (CameraController.Instance != null)
			CameraController.Instance.gameObject.SetActive(false);
	}

	void Start() {
		TableBoundsSetup();
	}

	private void TableBoundsSetup() {

		float width = tablePlane.lossyScale.x * 2 * 5;
		float height = tablePlane.lossyScale.z * 2 * 5;
		float x = tablePlane.position.x - width / 2;
		float y = tablePlane.position.z - height / 2;

		tableBounds = new Rect(x, y, width, height);
	}

	void Update() {
		MoveCameraWithInput();
	}

	private void MoveCameraWithInput() {
		Vector2 moveDir2 = GetAxisDirection();

		//Hide circuit menu on camera move
		/*if (moveDir2 != Vector2.zero) {
			Circuit circuit = GameGUI.Instance.currentMenuCircuit;
			if (circuit != null) {
				circuit.Deselect();
			}
		}*/

		float moveX = -moveDir2.y;
		float moveZ = moveDir2.x;

		float x = transform.position.x + moveX;
		float z = transform.position.z + moveZ;

		Vector3 newMoveDir = Vector3.zero;
		if (x < tableBounds.x + tableBounds.width && x > tableBounds.x)
			newMoveDir.x = moveX;
		if (z < tableBounds.y + tableBounds.height && z > tableBounds.y)
			newMoveDir.z = moveZ;

		Vector3 newPosition = transform.position + newMoveDir * moveSpeed;

		MoveSmoothlyTo(newPosition);
	}

	private void OnDrawGizmos() {
		Gizmos.color = Color.red;

		Vector3 origin = new Vector3(tableBounds.x, 73, tableBounds.y);
		Vector3 c1 = origin + new Vector3(tableBounds.width, 0, 0);
		Vector3 c2 = origin + new Vector3(0, 0, tableBounds.height);
		Vector3 c3 = origin + new Vector3(tableBounds.width, 0, tableBounds.height);

		Gizmos.DrawLine(origin, c1);
		Gizmos.DrawLine(origin, c2);
		Gizmos.DrawLine(c1, c3);
		Gizmos.DrawLine(c2, c3);
	}

	private void MoveSmoothlyTo(Vector3 pos) {
		transform.position = Vector3.SmoothDamp(transform.position, pos, ref currentVelocity, smooth);
	}

	private Vector2 GetAxisDirection() {
		float x = Input.GetAxisRaw("Horizontal");
		float y = Input.GetAxisRaw("Vertical");
		return new Vector2(x, y);
	}
}