92 lines
3.0 KiB
C#
92 lines
3.0 KiB
C#
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/// Credit Chris Trueman
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/// Sourced from - http://forum.unity3d.com/threads/use-reticle-like-mouse-for-worldspace-uis.295271/
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using System.Collections.Generic;
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namespace UnityEngine.EventSystems.Extensions
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{
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[RequireComponent(typeof(EventSystem))]
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[AddComponentMenu("UI/Extensions/Aimer Input Module")]
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public class AimerInputModule : BaseInputModule
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{
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public string ActivateAxis = "Interact";
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public static GameObject ObjectUnderAimer;
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public static Camera CurrentPlayerCamera;
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protected AimerInputModule() { }
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public void Awake()
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{
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var StandAloneSystem = GetComponent<StandaloneInputModule>();
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if (StandAloneSystem != null)
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{
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Debug.LogError("Aimer Input Module is incompatible with the StandAloneInputSystem, please remove it from the Event System in this scene");
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}
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if (!CurrentPlayerCamera)
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{
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CurrentPlayerCamera = Camera.main;
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}
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}
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public override void UpdateModule()
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{
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GetObjectUnderAimer();
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}
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public override void Process()
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{
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if (ObjectUnderAimer)
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{
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if (Input.GetButtonDown(ActivateAxis))
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{
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BaseEventData eventData = GetBaseEventData();
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eventData.selectedObject = ObjectUnderAimer;
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ExecuteEvents.Execute(ObjectUnderAimer, eventData, ExecuteEvents.submitHandler);
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}
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}
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}
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List<RaycastResult> results = new List<RaycastResult>();
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private bool GetObjectUnderAimer()
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{
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PointerEventData pointerData = new PointerEventData(eventSystem);
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pointerData.worldPosition = CurrentPlayerCamera.transform.position;
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eventSystem.RaycastAll(pointerData, results);
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if (results.Count > 0)
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{
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RaycastResult rayResult = FindFirstRaycast(results);
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if (ObjectUnderAimer != rayResult.gameObject)
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{
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Debug.Log(rayResult.gameObject.name);
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ObjectUnderAimer = rayResult.gameObject;
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BaseEventData eData = GetBaseEventData();
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eData.selectedObject = ObjectUnderAimer;
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ExecuteEvents.Execute(ObjectUnderAimer, eData, ExecuteEvents.pointerEnterHandler);
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}
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results.Clear();
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return true;
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}
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//We didn't hit anything
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if (ObjectUnderAimer)
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{
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BaseEventData eData = GetBaseEventData();
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eData.selectedObject = ObjectUnderAimer;
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ExecuteEvents.Execute(ObjectUnderAimer, eData, ExecuteEvents.pointerExitHandler);
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}
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results.Clear();
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ObjectUnderAimer = null;
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return false;
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}
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}
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}
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