SamsonGame/Assets/Sources/Lean/Touch+/Scripts/LeanDragTranslateAlong.cs

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2021-12-29 20:50:11 +03:00
using UnityEngine;
using Lean.Common;
using FSA = UnityEngine.Serialization.FormerlySerializedAsAttribute;
namespace Lean.Touch
{
/// <summary>This component allows you to translate the current GameObject along the specified surface.</summary>
[ExecuteInEditMode]
[HelpURL(LeanTouch.PlusHelpUrlPrefix + "LeanDragTranslateAlong")]
[AddComponentMenu(LeanTouch.ComponentPathPrefix + "Drag Translate Along")]
public class LeanDragTranslateAlong : MonoBehaviour
{
/// <summary>If you want this component to work on a different <b>Transform</b>, then specify it here. This can be used to improve organization if your GameObject already has many components.
/// None/null = Current Transform.</summary>
public Transform Target { set { target = value; } get { return target; } } [FSA("Target")] [SerializeField] private Transform target;
/// <summary>The method used to find fingers to use with this component. See LeanFingerFilter documentation for more information.</summary>
public LeanFingerFilter Use = new LeanFingerFilter(true);
/// <summary>The method used to find world coordinates from a finger. See LeanScreenDepth documentation for more information.</summary>
public LeanScreenDepth ScreenDepth = new LeanScreenDepth(LeanScreenDepth.ConversionType.DepthIntercept);
/// <summary>If your ScreenDepth settings cause the position values to clamp, there will be a difference between where the finger is and where the object is. Should this difference be tracked?</summary>
public bool TrackScreenPosition { set { trackScreenPosition = value; } get { return trackScreenPosition; } } [FSA("TrackScreenPosition")] [SerializeField] private bool trackScreenPosition = true;
/// <summary>If you want this component to change smoothly over time, then this allows you to control how quick the changes reach their target value.
/// -1 = Instantly change.
/// 1 = Slowly change.
/// 10 = Quickly change.</summary>
public float Damping { set { damping = value; } get { return damping; } } [FSA("Damping")] [FSA("Dampening")] [SerializeField] private float damping = -1.0f;
[System.NonSerialized]
private Vector2 deltaDifference;
[SerializeField]
private Vector3 remainingDelta;
/// <summary>If you've set Use to ManuallyAddedFingers, then you can call this method to manually add a finger.</summary>
public void AddFinger(LeanFinger finger)
{
Use.AddFinger(finger);
}
/// <summary>If you've set Use to ManuallyAddedFingers, then you can call this method to manually remove a finger.</summary>
public void RemoveFinger(LeanFinger finger)
{
Use.RemoveFinger(finger);
}
/// <summary>If you've set Use to ManuallyAddedFingers, then you can call this method to manually remove all fingers.</summary>
public void RemoveAllFingers()
{
Use.RemoveAllFingers();
}
#if UNITY_EDITOR
protected virtual void Reset()
{
Use.UpdateRequiredSelectable(gameObject);
}
#endif
protected virtual void Awake()
{
Use.UpdateRequiredSelectable(gameObject);
}
protected virtual void Update()
{
var finalTransform = target != null ? target : transform;
// Store smoothed position
var smoothPosition = finalTransform.localPosition;
// Snap to target
finalTransform.localPosition += remainingDelta;
// Store old position
var oldPosition = finalTransform.localPosition;
// Update to new position
UpdateTranslation();
// Shift delta by old new delta
remainingDelta += finalTransform.localPosition - oldPosition;
// Get t value
var factor = LeanHelper.GetDampenFactor(damping, Time.deltaTime);
// Dampen remainingDelta
var newDelta = Vector3.Lerp(remainingDelta, Vector3.zero, factor);
// Shift this position by the change in delta
finalTransform.localPosition = smoothPosition + remainingDelta - newDelta;
// Update remainingDelta with the dampened value
remainingDelta = newDelta;
}
private void UpdateTranslation()
{
var finalTransform = target != null ? target : transform;
// Get the fingers we want to use
var fingers = Use.UpdateAndGetFingers();
// Calculate the screenDelta value based on these fingers and make sure there is movement
var screenDelta = LeanGesture.GetScreenDelta(fingers);
if (screenDelta != Vector2.zero)
{
// Make sure the camera exists
var camera = LeanHelper.GetCamera(ScreenDepth.Camera, gameObject);
if (camera != null)
{
var worldPosition = finalTransform.position;
var oldScreenPoint = camera.WorldToScreenPoint(worldPosition);
if (trackScreenPosition == true)
{
if (ScreenDepth.TryConvert(ref worldPosition, oldScreenPoint + (Vector3)(screenDelta + deltaDifference), gameObject) == true)
{
finalTransform.position = worldPosition;
}
var newScreenPoint = camera.WorldToScreenPoint(worldPosition);
var oldNewDelta = (Vector2)(newScreenPoint - oldScreenPoint);
deltaDifference += screenDelta - oldNewDelta;
}
else
{
if (ScreenDepth.TryConvert(ref worldPosition, oldScreenPoint + (Vector3)screenDelta, gameObject) == true)
{
finalTransform.position = worldPosition;
}
}
}
else
{
Debug.LogError("Failed to find camera. Either tag your cameras MainCamera, or set one in this component.", this);
}
}
}
}
}
#if UNITY_EDITOR
namespace Lean.Touch.Editor
{
using TARGET = LeanDragTranslateAlong;
[UnityEditor.CanEditMultipleObjects]
[UnityEditor.CustomEditor(typeof(TARGET))]
public class LeanDragTranslateAlong_Editor : LeanEditor
{
protected override void OnInspector()
{
TARGET tgt; TARGET[] tgts; GetTargets(out tgt, out tgts);
Draw("target", "This allows you to control how quickly the target value is reached.");
Draw("Use");
Draw("ScreenDepth");
Draw("trackScreenPosition", "If your ScreenDepth settings cause the position values to clamp, there will be a difference between where the finger is and where the object is. Should this difference be tracked?");
Draw("damping", "If you want this component to change smoothly over time, then this allows you to control how quick the changes reach their target value.\n\n-1 = Instantly change.\n\n1 = Slowly change.\n\n10 = Quickly change.");
}
}
}
#endif