GUITexture Touch Problem

[alee26]

I am trying to make a button for Android Input.Touch. But it doesn’t work. Anyone can help please?

Here is the code:

`using UnityEngine;
using System.Collections;

public class AnInp : MonoBehaviour {

public Texture2D myButton;
// Use this for initialization
void Start () {

}

// Update is called once per frame
void Update () {
	Touch touch1;
if(Input.touchCount > 0) {
	touch1 = Input.touches[0];
	guiTexture.texture = myButton;
if(touch1.phase == TouchPhase.Began && guiTexture.HitTest(touch1.position)) {
	
		Application.Quit();

}

}
}

void OnGUI() {
GUI.DrawTexture(new Rect(60,60,60,60), myButton, ScaleMode.StretchToFill, true, 10.0F);

}
///////////////////////////////////////////
}
`

[aldonaletto]

You’re mixing different creatures: GUITexture and HitTest belong to the old gui system, while GUI.DrawTexture belongs to the new one - these systems are incompatible with each other, thus you should stick with one or the other.

To use a GUITexture, select the button texture in the Project view and click menu GameObject/Create Other/GUI Texture, than add this modified version of your code to it:

using UnityEngine; 
using System.Collections;

public class AnInp : MonoBehaviour { 

  void Update () { 
    Touch touch1; 
    if(Input.touchCount > 0) { 
      touch1 = Input.touches[0]; 
      if(touch1.phase == TouchPhase.Began && guiTexture.HitTest(touch1.position)) {
        Application.Quit(); 
      }
    } 
  }
}

To use the new GUI system, just follow @J.D.'s suggestion: use GUI.Button instead of GUI.DrawTexture:

using UnityEngine; 
using System.Collections;

public class AnInp : MonoBehaviour { 

  public Texture2D myButton;

  void OnGUI() { 
    if (GUI.Button(new Rect(60,60,60,60), myButton){
      Application.Quit();
    }
  }
}

[alee26]

using UnityEngine;
using System.Collections;

[RequireComponent (typeof (Drivetrain))]

public class CarController : MonoBehaviour {

	public Wheel[] wheels;
	public Transform centerOfMass;
	public float inertiaFactor = 1.5f;
	public float brake;
	public float throttle;
	float throttleInput;
	float steering;
	float lastShiftTime = -1;
	float handbrake;
	
	Drivetrain drivetrain;
	CarController carengine;
	
	public float shiftSpeed = 0.8f;
	public float throttleTime = 1.0f;
	public float throttleTimeTraction = 10.0f;
	public float throttleReleaseTime = 0.5f;
	public float throttleReleaseTimeTraction = 0.1f;
	public bool tractionControl = true;
	public float steerTime = 1.2f;
	public float veloSteerTime = 0.1f;
	public float steerReleaseTime = 0.6f;
	public float veloSteerReleaseTime = 0f;
	public float steerCorrectionFactor = 4.0f;
	//lights
	public Light solFren;
	public Light sagFren;
	public Light solFar;
	public Light sagFar;
	public Light solStop;
	public Light sagStop;
	public GUITexture accelTouch;
	public GUITexture brakeTouch;
	public GUITexture leftTouch;
	public GUITexture rightTouch;

	public float slipVelo {
		get {
			float val = 0.0f;
			foreach(Wheel w in wheels)
				val += w.slipVelo / wheels.Length;
			return val;
		}
	}

	// Initialize
	void Start ()
	{
		if (centerOfMass != null)
		rigidbody.centerOfMass = centerOfMass.localPosition;
		rigidbody.inertiaTensor *= inertiaFactor;
		drivetrain = GetComponent (typeof (Drivetrain)) as Drivetrain;
	}
	
	public void Update () {
		if (Input.touchCount > 0){
		foreach (Touch touchControl in Input.touches){
		GUILayer touchLayer = Camera.current.GetComponent(typeof(GUILayer)) as GUILayer;
		GUIElement button = touchLayer.HitTest(touchControl.position);
		    		// Steering
		Vector3 carDir = transform.forward;
		float fVelo = rigidbody.velocity.magnitude;
		Vector3 veloDir = rigidbody.velocity * (1/fVelo);
		float angle = -Mathf.Asin(Mathf.Clamp( Vector3.Cross(veloDir, carDir).y, -1, 1));
		float optimalSteering = angle / (wheels[0].maxSteeringAngle * Mathf.Deg2Rad);
		if (fVelo < 1)
			optimalSteering = 0;
				
		bool steerLeft = (button == leftTouch);
		bool steerRight = (button == rightTouch);
		float steerInput = 0;

		if (steerLeft)
			steerInput = -1;
		if (steerRight)
			steerInput = 1;
				
		if (steerInput < steering)
		{
			float steerSpeed = (steering>0)?(1/(steerReleaseTime+veloSteerReleaseTime*fVelo)) :(1/(steerTime+veloSteerTime*fVelo));
			if (steering > optimalSteering)
				steerSpeed *= 1 + (steering-optimalSteering) * steerCorrectionFactor;
			steering -= steerSpeed * Time.deltaTime;
			if (steerInput > steering)
				steering = steerInput;
		}
		else if (steerInput > steering)
		{
			float steerSpeed = (steering<0)?(1/(steerReleaseTime+veloSteerReleaseTime*fVelo)) :(1/(steerTime+veloSteerTime*fVelo));
			if (steering < optimalSteering)
				steerSpeed *= 1 + (optimalSteering-steering) * steerCorrectionFactor;
			steering += steerSpeed * Time.deltaTime;
			if (steerInput < steering)
				steering = steerInput;
		}
				
		// Throttle/Brake
		bool accelKey = (button == accelTouch);
		bool brakeKey = (button == brakeTouch);
		
		if (drivetrain.automatic && drivetrain.gear == 0)
		{
			accelKey = (button == brakeTouch);
			brakeKey = (button == accelTouch);
		}

		if (accelKey)
		{
			if (drivetrain.slipRatio < 0.1f)
				throttle += Time.deltaTime / throttleTime;
			else if (!tractionControl)
				throttle += Time.deltaTime / throttleTimeTraction;
			else
				throttle -= Time.deltaTime / throttleReleaseTime;

			if (throttleInput < 0)
				throttleInput = 0;
			throttleInput += Time.deltaTime / throttleTime;
			brake = 0;
		}
		else 
		{
			if (drivetrain.slipRatio < 0.1f)
				throttle -= Time.deltaTime / throttleReleaseTime;
			else
				throttle -= Time.deltaTime / throttleReleaseTimeTraction;
		}
		throttle = Mathf.Clamp01 (throttle);
				
		if (brakeKey)
		{
			if (drivetrain.slipRatio < 0.1f)
				brake += Time.deltaTime / throttleTime;
			else
				brake += Time.deltaTime / throttleTimeTraction;
			throttle = 0;
			throttleInput -= Time.deltaTime / throttleTime;
			solFren.light.intensity = 5;
			sagFren.light.intensity = 5;
		}
		else 
		{
			if (drivetrain.slipRatio < 0.1f)
				brake -= Time.deltaTime / throttleReleaseTime;
			else
				brake -= Time.deltaTime / throttleReleaseTimeTraction;
			solFren.light.intensity = 0;
			sagFren.light.intensity = 0;
		}
		brake = Mathf.Clamp01 (brake);
		throttleInput = Mathf.Clamp (throttleInput, -1, 1);

		// Handbrake
		handbrake = Mathf.Clamp01 ( handbrake + (Input.GetKey (KeyCode.Space)? Time.deltaTime: -Time.deltaTime) );
		
		// Gear shifting
		float shiftThrottleFactor = Mathf.Clamp01((Time.time - lastShiftTime)/shiftSpeed);
		drivetrain.throttle = throttle * shiftThrottleFactor;
		drivetrain.throttleInput = throttleInput;
		
		if(Input.GetKeyDown(KeyCode.A))
		{
			lastShiftTime = Time.time;
			drivetrain.ShiftUp ();
		}
		if(Input.GetKeyDown(KeyCode.Z))
		{
			lastShiftTime = Time.time;
			drivetrain.ShiftDown ();
		}

		// Apply inputs
		foreach(Wheel w in wheels)
		{
			w.brake = brake;
			w.handbrake = handbrake;
			w.steering = steering;
		}
	}
		}
	}
	// Debug GUI. Disable when not needed.
	void OnGUI ()
	{
		
		GUI.Label (new Rect(0,60,100,200),"km/h: "+rigidbody.velocity.magnitude * 3.6f);
		tractionControl = GUI.Toggle(new Rect(0,80,300,20), tractionControl, "Traction Control (bypassed by shift key)");
		
	}
}