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186 lines (150 loc) · 4.84 KB
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/*
* @author Valentin Simonov / http://va.lent.in/
*/
using TouchScript.Hit;
using TouchScript.Utils;
using UnityEngine;
namespace TouchScript.Layers
{
/// <summary>
/// Layer which gets all input from a camera. Should be used instead of a background object getting all the touches which come through.
/// </summary>
[AddComponentMenu("TouchScript/Layers/Fullscreen Layer")]
public sealed class FullscreenLayer : TouchLayer
{
#region Constants
/// <summary>
/// The type of FullscreenLayer.
/// </summary>
public enum LayerType
{
/// <summary>
/// Get touches from main camera.
/// </summary>
MainCamera,
/// <summary>
/// Get touches from specific camera.
/// </summary>
Camera,
/// <summary>
/// Get all touches on Z=0 plane without a camera.
/// </summary>
Global
}
#endregion
#region Public properties
/// <summary>
/// Layer type.
/// </summary>
public LayerType Type
{
get { return type; }
set
{
if (value == type) return;
type = value;
updateCamera();
cacheCameraTransform();
}
}
/// <summary>
/// Target camera if <see cref="LayerType.Camera"/> or <see cref="LayerType.MainCamera"/> is used.
/// </summary>
public Camera Camera
{
get { return _camera; }
set
{
if (value == _camera) return;
_camera = value;
if (_camera == null) Type = LayerType.Global;
else Type = LayerType.Camera;
setName();
}
}
/// <inheritdoc />
public override Vector3 WorldProjectionNormal
{
get
{
if (cameraTransform == null) return transform.forward;
return cameraTransform.forward;
}
}
#endregion
#region Private variables
[SerializeField]
private LayerType type = LayerType.MainCamera;
[SerializeField]
private Camera _camera;
private Transform cameraTransform;
#endregion
#region Public methods
/// <inheritdoc />
public override LayerHitResult Hit(Vector2 position, out ITouchHit hit)
{
if (base.Hit(position, out hit) == LayerHitResult.Miss) return LayerHitResult.Miss;
if (_camera != null)
{
if (!_camera.pixelRect.Contains(position)) return LayerHitResult.Miss;
}
hit = TouchHitFactory.Instance.GetTouchHit(transform);
var hitTests = transform.GetComponents<HitTest>();
if (hitTests.Length == 0) return LayerHitResult.Hit;
foreach (var test in hitTests)
{
if (!test.enabled) continue;
var hitResult = test.IsHit(hit);
if (hitResult == HitTest.ObjectHitResult.Miss || hitResult == HitTest.ObjectHitResult.Discard) return LayerHitResult.Miss;
}
return LayerHitResult.Hit;
}
/// <inheritdoc />
public override Vector3 ProjectTo(Vector2 screenPosition, Plane projectionPlane)
{
if (_camera == null) return base.ProjectTo(screenPosition, projectionPlane);
else return ProjectionUtils.CameraToPlaneProjection(screenPosition, _camera, projectionPlane);
}
#endregion
#region Unity methods
/// <inheritdoc />
protected override void Awake()
{
updateCamera();
cacheCameraTransform();
base.Awake();
}
// To be able to turn it off
private void OnEnable() {}
#endregion
#region Protected functions
/// <inheritdoc />
protected override void setName()
{
if (_camera == null) Name = "Global Fullscreen";
else Name = "Fullscreen @ " + _camera.name;
}
#endregion
#region Private functions
private void updateCamera()
{
switch (type)
{
case LayerType.Global:
_camera = null;
break;
case LayerType.MainCamera:
_camera = Camera.main;
if (_camera == null) Debug.LogError("No Main camera found!");
break;
}
setName();
}
private void cacheCameraTransform()
{
if (_camera == null) cameraTransform = null;
else cameraTransform = _camera.transform;
}
#endregion
}
}