91 lines
2.9 KiB
C#
91 lines
2.9 KiB
C#
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using UnityEngine;
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using Lean.Common;
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using FSA = UnityEngine.Serialization.FormerlySerializedAsAttribute;
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namespace Lean.Touch
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{
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/// <summary>This script will add torque to the attached Rigidbody based on finger spin gestures.</summary>
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[RequireComponent(typeof(Rigidbody))]
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[HelpURL(LeanTouch.PlusHelpUrlPrefix + "LeanSelectableDragTorque")]
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[AddComponentMenu(LeanTouch.ComponentPathPrefix + "Selectable Drag Torque")]
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public class LeanSelectableDragTorque : LeanSelectableByFingerBehaviour
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{
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/// <summary>The camera this component will calculate using.
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/// None/null = MainCamera.</summary>
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public Camera Camera { set { _camera = value; } get { return _camera; } } [FSA("Camera")] [SerializeField] private Camera _camera;
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/// <summary>The torque force multiplier.</summary>
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public float Force { set { force = value; } get { return force; } } [FSA("Force")] [SerializeField] private float force = 0.1f;
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// The previous finger.ScaledDelta
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[System.NonSerialized]
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private Vector2 oldScaledDelta;
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// The cached rigidbody attached to this GameObject
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[System.NonSerialized]
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private Rigidbody cachedRigidbody;
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protected override void OnSelected()
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{
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oldScaledDelta = Vector3.zero;
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}
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protected virtual void Update()
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{
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// Is this GameObject selected?
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if (Selectable != null && Selectable.IsSelected == true)
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{
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// Does it have a selected finger?
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var finger = Selectable.SelectingFinger;
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if (finger != null)
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{
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// Make sure the camera exists
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var camera = LeanHelper.GetCamera(_camera, gameObject);
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if (camera != null)
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{
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var newScaledDelta = finger.ScaledDelta;
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if (oldScaledDelta != Vector2.zero && newScaledDelta != Vector2.zero)
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{
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var angleA = Mathf.Atan2(oldScaledDelta.y, oldScaledDelta.x) * Mathf.Rad2Deg;
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var angleB = Mathf.Atan2(newScaledDelta.y, newScaledDelta.x) * Mathf.Rad2Deg;
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var torque = Mathf.DeltaAngle(angleA, angleB) * (oldScaledDelta.magnitude + newScaledDelta.magnitude);
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if (cachedRigidbody == null) cachedRigidbody = GetComponent<Rigidbody>();
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cachedRigidbody.AddTorque(camera.transform.forward * torque * force, ForceMode.Acceleration);
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}
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oldScaledDelta = newScaledDelta;
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}
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else
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{
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Debug.LogError("Failed to find camera. Either tag your cameras MainCamera, or set one in this component.", this);
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}
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}
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}
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}
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}
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}
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#if UNITY_EDITOR
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namespace Lean.Touch.Editor
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{
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using TARGET = LeanSelectableDragTorque;
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[UnityEditor.CanEditMultipleObjects]
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[UnityEditor.CustomEditor(typeof(TARGET))]
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public class LeanSelectableDragTorque_Editor : LeanEditor
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{
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protected override void OnInspector()
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{
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TARGET tgt; TARGET[] tgts; GetTargets(out tgt, out tgts);
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Draw("_camera", "The camera this component will calculate using.\n\nNone/null = MainCamera.");
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Draw("force", "The torque force multiplier.");
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}
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}
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}
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#endif
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