96 lines
3.7 KiB
C#
96 lines
3.7 KiB
C#
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/// ---------------------------------------------
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/// Ultimate Character Controller
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/// Copyright (c) Opsive. All Rights Reserved.
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/// https://www.opsive.com
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/// ---------------------------------------------
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namespace Opsive.UltimateCharacterController.Input.VirtualControls
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{
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using Opsive.Shared.Game;
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using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.UI;
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/// <summary>
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/// A virtual touchpad that will move the axis based on the position of the press relative to the starting press position.
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/// </summary>
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public class VirtualTouchpad : VirtualAxis, IDragHandler
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{
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[Tooltip("Should the input value be stopped if there is no movement on the touch pad?")]
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[SerializeField] protected bool m_RequireActiveDrag;
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[Tooltip("The value to dampen the drag value by when no longer dragging. The higher the value the quicker the drag value will decrease.")]
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[SerializeField] protected float m_ActiveDragDamping = 1f;
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private RectTransform m_RectTransform;
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private Vector2 m_LocalStartPosition;
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private Transform m_CanvasScalarTransform;
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private ScheduledEventBase m_ActiveDragScheduler;
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/// <summary>
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/// Initialize the default values.
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/// </summary>
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protected override void Awake()
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{
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base.Awake();
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m_RectTransform = GetComponent<RectTransform>();
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m_CanvasScalarTransform = GetComponentInParent<CanvasScaler>().transform;
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}
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/// <summary>
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/// Callback when a pointer has pressed on the button.
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/// </summary>
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/// <param name="data">The pointer data.</param>
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public override void OnPointerDown(PointerEventData data)
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{
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base.OnPointerDown(data);
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RectTransformUtility.ScreenPointToLocalPointInRectangle(m_RectTransform, data.pressPosition, null, out m_LocalStartPosition);
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}
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/// <summary>
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/// Callback when a pointer has dragged the button.
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/// </summary>
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/// <param name="data">The pointer data.</param>
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public void OnDrag(PointerEventData data)
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{
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if (RectTransformUtility.RectangleContainsScreenPoint(m_RectTransform, data.position, null)) {
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var canvasScale = m_CanvasScalarTransform == null ? Vector3.one : m_CanvasScalarTransform.localScale;
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m_DeltaPosition.x += data.delta.x / canvasScale.x;
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m_DeltaPosition.y += data.delta.y / canvasScale.y;
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Scheduler.Cancel(m_ActiveDragScheduler);
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if (m_RequireActiveDrag) {
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m_ActiveDragScheduler = Scheduler.Schedule(Time.fixedDeltaTime, DampenDeltaPosition);
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}
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}
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}
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/// <summary>
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/// Clears the delta drag position.
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/// </summary>
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private void DampenDeltaPosition()
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{
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m_DeltaPosition /= (1 + m_ActiveDragDamping);
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if (m_DeltaPosition.sqrMagnitude > 0.1f) {
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m_ActiveDragScheduler = Scheduler.Schedule(Time.fixedDeltaTime, DampenDeltaPosition);
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}
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}
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/// <summary>
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/// Returns the value of the axis.
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/// </summary>
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/// <param name="name">The name of the axis.</param>
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/// <returns>The value of the axis.</returns>
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public override float GetAxis(string name)
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{
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if (!m_Pressed) {
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return 0;
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}
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if (name == m_HorizontalInputName) {
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return m_DeltaPosition.x / (m_RectTransform.sizeDelta.x - m_LocalStartPosition.x);
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}
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return m_DeltaPosition.y / (m_RectTransform.sizeDelta.y - m_LocalStartPosition.y);
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}
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}
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}
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