using TowerDefense.Towers;
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using UnityEngine;
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namespace TowerDefense.UI.HUD
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{
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/// <summary>
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/// A class that controls the information display
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/// whilst dragging the ghost tower
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/// </summary>
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[RequireComponent(typeof(TowerUI))]
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public class BuildInfoUI : MonoBehaviour
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{
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/// <summary>
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/// an enum for easily keeping track of UI animation
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/// </summary>
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public enum AnimationState
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{
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/// <summary>
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/// The UI is completely hidden
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/// </summary>
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Hidden,
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/// <summary>
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/// The UI is animation to be shown
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/// </summary>
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Showing,
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/// <summary>
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/// the UI is completely shown
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/// </summary>
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Shown,
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/// <summary>
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/// The UI is animating
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/// </summary>
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Hiding
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}
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/// <summary>
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/// The attached animator
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/// </summary>
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public Animation anim;
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/// <summary>
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/// The name of the clip that shows the UI
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/// </summary>
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public string showClipName = "Show";
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/// <summary>
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/// The name of the clip that hides the UI
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/// </summary>
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public string hideClipName = "Hide";
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/// <summary>
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/// The attached <see cref="TowerUI"/>
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/// </summary>
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protected TowerUI m_TowerUI;
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/// <summary>
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/// The attached canvas
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/// </summary>
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protected Canvas m_Canvas;
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/// <summary>
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/// Tracks the animation of the UI
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/// </summary>
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AnimationState m_State;
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/// <summary>
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/// NOTE: Plays from Show animation clip event
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/// Fires at the end of the show animation
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/// Sets <see cref="m_State"/> to Show
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/// </summary>
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public void ShowEnd()
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{
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m_State = AnimationState.Shown;
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}
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/// <summary>
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/// NOTE: Plays from Hide animation clip event
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/// Fires at the end of the hide animation
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/// Sets <see cref="m_State"/> to Hidden
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/// </summary>
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public void HideEnd()
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{
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m_State = AnimationState.Hidden;
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}
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/// <summary>
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/// Shows the information
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/// </summary>
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/// <param name="controller">
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/// The tower information to display
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/// </param>
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public virtual void Show(Tower controller)
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{
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m_TowerUI.Show(controller);
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if (m_State == AnimationState.Shown)
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{
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return;
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}
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anim.Play(showClipName);
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if (m_State == AnimationState.Hiding)
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{
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anim[showClipName].normalizedTime = 1;
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m_State = AnimationState.Shown;
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return;
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}
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m_State = anim[showClipName].normalizedTime < 1 ? AnimationState.Showing :
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AnimationState.Shown;
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}
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/// <summary>
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/// Hides the information
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/// </summary>
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public virtual void Hide()
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{
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if (m_State == AnimationState.Hidden)
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{
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return;
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}
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m_TowerUI.Hide();
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anim.Play(hideClipName);
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m_State = anim[hideClipName].normalizedTime < 1 ? AnimationState.Hiding :
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AnimationState.Hidden;
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}
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/// <summary>
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/// Cache the attached Canvas and the attached TowerControllerUI
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/// </summary>
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protected virtual void Awake()
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{
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m_Canvas = GetComponent<Canvas>();
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m_TowerUI = GetComponent<TowerUI>();
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}
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}
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}
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