106 lines
2.6 KiB
C#
106 lines
2.6 KiB
C#
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using UnityEngine;
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namespace Lean.Common
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{
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/// <summary>This script allows you to drag this Rigidbody2D in a way that causes it to chase the specified position.</summary>
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[RequireComponent(typeof(Rigidbody2D))]
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[HelpURL(LeanHelper.PlusHelpUrlPrefix + "LeanChaseRigidbody2D")]
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[AddComponentMenu(LeanHelper.ComponentPathPrefix + "Chase Rigidbody2D")]
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public class LeanChaseRigidbody2D : LeanChase
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{
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public enum AxisType
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{
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HorizontalAndVertical,
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Horizontal,
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Vertical
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}
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/// <summary>This allows you to control which axes the velocity can apply to.</summary>
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public AxisType Axis { set { axis = value; } get { return axis; } } [SerializeField] private AxisType axis;
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[System.NonSerialized]
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private Rigidbody2D cachedRigidbody;
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[System.NonSerialized]
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protected bool fixedUpdateCalled;
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/// <summary>This method will override the Position value based on the specified value.</summary>
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public override void SetPosition(Vector3 newPosition)
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{
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base.SetPosition(newPosition);
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fixedUpdateCalled = false;
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}
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protected virtual void OnEnable()
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{
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cachedRigidbody = GetComponent<Rigidbody2D>();
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}
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protected override void UpdatePosition(float damping, float linear)
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{
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if (positionSet == true || continuous == true)
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{
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if (destination != null)
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{
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position = destination.TransformPoint(destinationOffset);
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}
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var currentPosition = (Vector2)(transform.position);
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var targetPosition = (Vector2)(position + offset);
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var direction = targetPosition - currentPosition;
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var velocity = direction / Time.fixedDeltaTime;
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// Apply the velocity
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velocity *= LeanHelper.GetDampenFactor(damping, Time.fixedDeltaTime);
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velocity = Vector3.MoveTowards(velocity, Vector3.zero, linear * Time.fixedDeltaTime);
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if (axis == AxisType.Horizontal)
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{
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velocity.y = cachedRigidbody.velocity.y;
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}
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else if (axis == AxisType.Vertical)
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{
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velocity.x = cachedRigidbody.velocity.x;
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}
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cachedRigidbody.velocity = velocity;
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fixedUpdateCalled = true;
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}
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}
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protected virtual void LateUpdate()
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{
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if (fixedUpdateCalled == true)
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{
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positionSet = false;
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fixedUpdateCalled = false;
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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.Common.Editor
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{
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using TARGET = LeanChaseRigidbody2D;
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[UnityEditor.CanEditMultipleObjects]
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[UnityEditor.CustomEditor(typeof(TARGET))]
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public class LeanChaseRigidbody2D_Editor : LeanChase_Editor
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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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base.OnInspector();
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Separator();
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Draw("axis", "This allows you to control which axes the velocity can apply to.");
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}
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}
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}
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#endif
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