RunnerSanta2019/Assets/Assetss/UltimateKit/C# Scripts/SwipeControlsCS.cs

/*
*	FUNCTION: Detects and controls the swipes during gameplay.
*	
*	USED BY: This script is a part of the "Player" prefab.
*
*	INFO: Call the getSwipeDirection() function in the Update() function of your script responsible for character control
*
*/

using UnityEngine;
using System.Collections;

public class SwipeControlsCS : MonoBehaviour {

	public enum SwipeDirection 
	{
		Null = 0,//no swipe detected
		Duck = 1,//swipe down detected
		Jump = 2,//swipe up detected
		Right = 3,//swipe right detected
		Left = 4//swipe left detected
	}
	
	//Constants
	private float fSensitivity = 15;
	
	//VARIABLES
	//distance calculation
	private SwipeDirection sSwipeDirection;			//string to receive swipe output (Debug Only)
	private float fInitialX;
	private float fInitialY;
	private float fFinalX;
	private float fFinalY;
	private int iTouchStateFlag;	//flag to check 
	
	private float inputX;				//x-coordinate
	private float inputY;				//y-coordinate
	private float slope;				//slope (m) of the the 
	private float fDistance;			//magnitude of distance between two positions
	
	// Use this for initialization
	void Start ()
	{
		fInitialX = 0.0f;
		fInitialY = 0.0f;
		fFinalX = 0.0f;
		fFinalY = 0.0f;
		
		inputX = 0.0f;
		inputY = 0.0f;
		
		iTouchStateFlag = 0;
		sSwipeDirection = SwipeDirection.Null;
	}
	
	void Update()
	{
		if (iTouchStateFlag == 0 && Input.GetMouseButtonDown(0))	//state 1 of swipe control
		{		
			fInitialX = Input.mousePosition.x;	//get the initial x mouse/ finger value
			fInitialY = Input.mousePosition.y;	//get the initial y mouse/ finger value
			
			sSwipeDirection = SwipeDirection.Null;
			iTouchStateFlag = 1;
		}		
		if (iTouchStateFlag == 1)	//state 2 of swipe control
		{
			fFinalX = Input.mousePosition.x;
			fFinalY = Input.mousePosition.y;
			
			sSwipeDirection = swipeDirection();	//get the swipe direction
			if (sSwipeDirection != SwipeDirection.Null)
				iTouchStateFlag = 2;
		}//end of state 1		
		if (iTouchStateFlag == 2 || Input.GetMouseButtonUp(0))	//state 3 of swipe control
		{
			//sSwipeDirection = SwipeDirection.Null;
			iTouchStateFlag = 0;
		}//end of M.R. swipe control
	}
	
	/*
	*	FUNCTION: Calculate the swipe direction
	*/
	private SwipeDirection swipeDirection()
	{
		//calculate the slope of the swipe
		inputX = fFinalX - fInitialX;
		inputY = fFinalY - fInitialY;
		slope = inputY / inputX;
		
		//calculate the distance of tap start and end
		fDistance = Mathf.Sqrt( Mathf.Pow((fFinalY-fInitialY), 2) + Mathf.Pow((fFinalX-fInitialX), 2) );
		
		if (fDistance <= (Screen.width/fSensitivity))//higher the dividing factor higher the sensitivity
			return SwipeDirection.Null;
		
		if (inputX >= 0 && inputY > 0 && slope > 1)//first octant JUMP
		{		
			return SwipeDirection.Jump;
		}
		else if (inputX <= 0 && inputY > 0 && slope < -1)//eighth octant  JUMP
		{
			return SwipeDirection.Jump;
		}
		else if (inputX > 0 && inputY >= 0 && slope < 1 && slope >= 0)//second octant  RIGHT
		{
			return SwipeDirection.Right;
		}
		else if (inputX > 0 && inputY <= 0 && slope > -1 && slope <= 0)//third octant  RIGHT
		{
			return SwipeDirection.Right;
		}
		else if (inputX < 0 && inputY >= 0 && slope > -1 && slope <= 0)//seventh octant  LEFT
		{
			return SwipeDirection.Left;
		}
		else if (inputX < 0 && inputY <= 0 && slope >= 0 && slope < 1)//sixth octant  LEFT
		{
			return SwipeDirection.Left;
		}
		else if (inputX >= 0 && inputY < 0 && slope < -1)//fourth octant  DUCK
		{
			return SwipeDirection.Duck;
		}
		else if (inputX <= 0 && inputY < 0 && slope > 1)//fifth octant  DUCK
		{
			return SwipeDirection.Duck;
		}//end of else if
		
		return SwipeDirection.Null;	
	}//end of SwipeDirection function
	
	/*
	*	FUNCTION: Return swipe direction.
	*	RETURNS: Returns NULL if no swipes are detected.
	*			  Returns SwipeDirection if a swipe is detected
	*/
	public SwipeDirection getSwipeDirection()
	{
		if (sSwipeDirection != SwipeDirection.Null)
		{
			var etempSwipeDirection = sSwipeDirection;
			sSwipeDirection = SwipeDirection.Null;
			
			return etempSwipeDirection;
		}
		else
			return SwipeDirection.Null;
	}
}