79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
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using UnityEngine;
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using System.Collections;
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using UnityEngine.UI;
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using UnityEngine.Events;
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using UnityEngine.EventSystems;
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using System;
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namespace MoreMountains.Tools
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{
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/// <summary>
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/// Add this component to a UI rectangle and it'll act as a detection zone for a joystick.
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/// Note that this component extends the MMTouchJoystick class so you don't need to add another joystick to it. It's both the detection zone and the stick itself.
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/// </summary>
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[AddComponentMenu("More Mountains/Tools/Controls/MMTouchRepositionableJoystick")]
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public class MMTouchRepositionableJoystick : MMTouchJoystick, IPointerDownHandler
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{
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[Header("Dynamic Joystick")]
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public CanvasGroup KnobCanvasGroup;
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public CanvasGroup BackgroundCanvasGroup;
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protected Vector3 _initialPosition;
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protected Vector3 _newPosition;
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protected CanvasGroup _knobCanvasGroup;
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/// <summary>
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/// On Start, we instantiate our joystick's image if there's one
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/// </summary>
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protected override void Start()
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{
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base.Start();
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// we store the detection zone's initial position
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_initialPosition = GetComponent<RectTransform>().localPosition;
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}
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public override void Initialize()
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{
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base.Initialize();
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SetKnobTransform(KnobCanvasGroup.transform);
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_canvasGroup = KnobCanvasGroup;
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_initialOpacity = _canvasGroup.alpha;
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}
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/// <summary>
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/// When the zone is pressed, we move our joystick accordingly
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/// </summary>
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/// <param name="data">Data.</param>
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public virtual void OnPointerDown(PointerEventData data)
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{
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// if we're in "screen space - camera" render mode
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if (ParentCanvasRenderMode == RenderMode.ScreenSpaceCamera)
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{
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_newPosition = TargetCamera.ScreenToWorldPoint(data.position);
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}
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// otherwise
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else
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{
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_newPosition = data.position;
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}
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_newPosition.z = this.transform.position.z;
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// we define a new neutral position
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BackgroundCanvasGroup.transform.position = _newPosition;
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SetNeutralPosition(_newPosition);
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_knobTransform.position = _newPosition;
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}
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/// <summary>
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/// When the player lets go of the stick, we restore our stick's position if needed
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/// </summary>
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/// <param name="eventData">Event data.</param>
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public override void OnEndDrag(PointerEventData eventData)
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{
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base.OnEndDrag(eventData);
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}
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}
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}
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