239 lines
8.3 KiB
C#
239 lines
8.3 KiB
C#
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using UnityEngine;
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using UnityEngine.UI;
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using UnityEngine.EventSystems;
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/* REMOVE COMMENT TO MAKE FUNCTIONAL
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using UnityStandardAssets.CrossPlatformInput;
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*/
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namespace DuloGames.UI
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{
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[AddComponentMenu("UI/Joystick", 36), RequireComponent(typeof(RectTransform))]
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public class UIJoystick : UIBehaviour, IBeginDragHandler, IEndDragHandler, IDragHandler, IPointerDownHandler, IPointerUpHandler
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{
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public enum AxisOption
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{
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// Options for which axes to use
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Both, // Use both
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OnlyHorizontal, // Only horizontal
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OnlyVertical // Only vertical
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}
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[SerializeField, Tooltip("The child graphic that will be moved around.")]
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private RectTransform m_Handle;
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public RectTransform Handle
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{
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get { return this.m_Handle; }
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set
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{
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this.m_Handle = value;
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UpdateHandle();
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}
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}
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[SerializeField, Tooltip("The handling area that the handle is allowed to be moved in.")]
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private RectTransform m_HandlingArea;
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public RectTransform HandlingArea
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{
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get { return this.m_HandlingArea; }
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set { this.m_HandlingArea = value; }
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}
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[SerializeField, Tooltip("The child graphic that will be shown when the joystick is active.")]
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private Image m_ActiveGraphic;
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public Image ActiveGraphic
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{
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get { return this.m_ActiveGraphic; }
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set { this.m_ActiveGraphic = value; }
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}
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[SerializeField] private Vector2 m_Axis;
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/* REMOVE COMMENT TO MAKE FUNCTIONAL
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[SerializeField] private AxisOption m_AxesToUse = AxisOption.Both; // The options for the axes that the still will use
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*/
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[SerializeField, Tooltip("How fast the joystick will go back to the center")]
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private float m_Spring = 25f;
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public float Spring
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{
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get { return this.m_Spring; }
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set { this.m_Spring = value; }
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}
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[SerializeField, Tooltip("How close to the center that the axis will be output as 0")]
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private float m_DeadZone = 0.1f;
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public float DeadZone
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{
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get { return this.m_DeadZone; }
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set { this.m_DeadZone = value; }
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}
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[Tooltip("Customize the output that is sent in OnValueChange")]
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public AnimationCurve outputCurve = new AnimationCurve(new Keyframe(0, 0, 1, 1), new Keyframe(1, 1, 1, 1));
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private bool m_IsDragging = false;
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/* REMOVE COMMENT TO MAKE FUNCTIONAL
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[SerializeField] private string m_HorizontalAxisName = "Horizontal"; // The name given to the horizontal axis for the cross platform input
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[SerializeField] private string m_VerticalAxisName = "Vertical"; // The name given to the vertical axis for the cross platform input
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private bool m_UseX; // Toggle for using the x axis
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private bool m_UseY; // Toggle for using the Y axis
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private CrossPlatformInputManager.VirtualAxis m_HorizontalVirtualAxis; // Reference to the joystick in the cross platform input
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private CrossPlatformInputManager.VirtualAxis m_VerticalVirtualAxis; // Reference to the joystick in the cross platform input
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*/
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#if UNITY_EDITOR
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protected override void OnValidate()
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{
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base.OnValidate();
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// Fix anchors
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if (this.m_HandlingArea != null)
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{
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this.m_HandlingArea.anchorMin = new Vector2(0.5f, 0.5f);
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this.m_HandlingArea.anchorMax = new Vector2(0.5f, 0.5f);
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}
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// Hide active
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if (this.m_ActiveGraphic != null)
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this.m_ActiveGraphic.canvasRenderer.SetAlpha(0f);
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this.UpdateHandle();
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}
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#endif
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protected override void OnEnable()
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{
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base.OnEnable();
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this.CreateVirtualAxes();
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if (this.m_HandlingArea == null)
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this.m_HandlingArea = this.transform as RectTransform;
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if (this.m_ActiveGraphic != null)
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this.m_ActiveGraphic.canvasRenderer.SetAlpha(0f);
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}
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protected void CreateVirtualAxes()
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{
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/* REMOVE COMMENT TO MAKE FUNCTIONAL
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// set axes to use
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this.m_UseX = (this.m_AxesToUse == AxisOption.Both || this.m_AxesToUse == AxisOption.OnlyHorizontal);
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this.m_UseY = (this.m_AxesToUse == AxisOption.Both || this.m_AxesToUse == AxisOption.OnlyVertical);
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if (this.m_UseX)
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{
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this.m_HorizontalVirtualAxis = new CrossPlatformInputManager.VirtualAxis(this.m_HorizontalAxisName);
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CrossPlatformInputManager.RegisterVirtualAxis(this.m_HorizontalVirtualAxis);
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}
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if (this.m_UseY)
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{
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this.m_VerticalVirtualAxis = new CrossPlatformInputManager.VirtualAxis(this.m_VerticalAxisName);
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CrossPlatformInputManager.RegisterVirtualAxis(this.m_VerticalVirtualAxis);
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}
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*/
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}
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protected void LateUpdate()
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{
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if (this.isActiveAndEnabled && !this.m_IsDragging)
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{
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if (this.m_Axis != Vector2.zero)
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{
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Vector2 newAxis = this.m_Axis - (this.m_Axis * Time.unscaledDeltaTime * this.m_Spring);
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if (newAxis.sqrMagnitude <= .0001f)
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newAxis = Vector2.zero;
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this.SetAxis(newAxis);
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}
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}
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}
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public Vector2 JoystickAxis
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{
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get
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{
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Vector2 outputPoint = this.m_Axis.magnitude > this.m_DeadZone ? this.m_Axis : Vector2.zero;
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float magnitude = outputPoint.magnitude;
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outputPoint *= outputCurve.Evaluate(magnitude);
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return outputPoint;
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}
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set { this.SetAxis(value); }
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}
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public void SetAxis(Vector2 axis)
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{
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this.m_Axis = Vector2.ClampMagnitude(axis, 1);
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Vector2 outputPoint = this.m_Axis.magnitude > this.m_DeadZone ? this.m_Axis : Vector2.zero;
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float magnitude = outputPoint.magnitude;
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outputPoint *= outputCurve.Evaluate(magnitude);
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/* REMOVE COMMENT TO MAKE FUNCTIONAL
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if (this.m_UseX) this.m_HorizontalVirtualAxis.Update(outputPoint.x);
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if (this.m_UseY) this.m_VerticalVirtualAxis.Update(outputPoint.y);
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*/
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this.UpdateHandle();
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}
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public void OnBeginDrag(PointerEventData eventData)
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{
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if (!this.IsActive() || this.m_HandlingArea == null)
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return;
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Vector2 newAxis = this.m_HandlingArea.InverseTransformPoint(eventData.position);
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newAxis.x /= this.m_HandlingArea.sizeDelta.x * 0.5f;
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newAxis.y /= this.m_HandlingArea.sizeDelta.y * 0.5f;
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this.SetAxis(newAxis);
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this.m_IsDragging = true;
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}
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public void OnEndDrag(PointerEventData eventData)
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{
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this.m_IsDragging = false;
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}
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public void OnDrag(PointerEventData eventData)
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{
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if (this.m_HandlingArea == null)
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return;
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Vector2 axis = Vector2.zero;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(this.m_HandlingArea, eventData.position, eventData.pressEventCamera, out axis);
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axis -= this.m_HandlingArea.rect.center;
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axis.x /= this.m_HandlingArea.sizeDelta.x * 0.5f;
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axis.y /= this.m_HandlingArea.sizeDelta.y * 0.5f;
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this.SetAxis(axis);
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}
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private void UpdateHandle()
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{
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if (this.m_Handle && this.m_HandlingArea)
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{
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this.m_Handle.anchoredPosition = new Vector2(this.m_Axis.x * this.m_HandlingArea.sizeDelta.x * 0.5f, this.m_Axis.y * this.m_HandlingArea.sizeDelta.y * 0.5f);
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}
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}
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public void OnPointerDown(PointerEventData eventData)
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{
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if (this.m_ActiveGraphic != null)
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this.m_ActiveGraphic.CrossFadeAlpha(1f, 0.2f, false);
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}
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public void OnPointerUp(PointerEventData eventData)
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{
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if (this.m_ActiveGraphic != null)
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this.m_ActiveGraphic.CrossFadeAlpha(0f, 0.2f, false);
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}
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}
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}
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