using UnityEngine;
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using System.Collections;
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using System;
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using UnityEngine.UI;
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namespace MoreMountains.NiceVibrations
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{
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/// <summary>
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/// A class to add to an Image or SpriteRenderer to have it act like a button with a different sprite for on and off states
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/// </summary>
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public class MMSpriteReplace : MonoBehaviour
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{
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[Header("Sprites")]
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/// the sprite to use when in the "on" state
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public Sprite OnSprite;
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/// the sprite to use when in the "off" state
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public Sprite OffSprite;
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[Header("Start settings")]
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/// if this is true, the button will start if "on" state
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public bool StartsOn = true;
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/// the current state of the button
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public bool CurrentValue { get { return (_image.sprite == OnSprite); } }
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protected Image _image;
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protected SpriteRenderer _spriteRenderer;
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protected MMTouchButton _mmTouchButton;
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/// <summary>
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/// On Start we initialize our button
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/// </summary>
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protected virtual void Start()
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{
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Initialization ();
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}
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/// <summary>
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/// On init, we grab our image component, and set our sprite in its initial state
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/// </summary>
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protected virtual void Initialization()
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{
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// grabs components
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_image = GetComponent<Image> ();
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_spriteRenderer = GetComponent<SpriteRenderer>();
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// grabs button
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_mmTouchButton = GetComponent<MMTouchButton> ();
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if (_mmTouchButton != null)
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{
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_mmTouchButton.ReturnToInitialSpriteAutomatically = false;
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}
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// handles start
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if ((OnSprite == null) || (OffSprite == null))
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{
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return;
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}
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if (_image != null)
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{
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if (StartsOn)
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{
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_image.sprite = OnSprite;
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}
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else
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{
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_image.sprite = OffSprite;
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}
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}
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if (_spriteRenderer != null)
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{
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if (StartsOn)
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{
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_spriteRenderer.sprite = OnSprite;
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}
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else
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{
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_spriteRenderer.sprite = OffSprite;
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}
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}
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}
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/// <summary>
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/// A public method to change the sprite
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/// </summary>
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public virtual void Swap()
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{
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if (_image != null)
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{
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if (_image.sprite != OnSprite)
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{
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SwitchToOnSprite();
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}
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else
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{
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SwitchToOffSprite();
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}
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}
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if (_spriteRenderer != null)
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{
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if (_spriteRenderer.sprite != OnSprite)
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{
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SwitchToOnSprite();
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}
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else
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{
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SwitchToOffSprite();
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}
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}
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}
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/// <summary>
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/// a public method to switch to off sprite directly
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/// </summary>
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public virtual void SwitchToOffSprite()
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{
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if ((_image == null) && (_spriteRenderer == null))
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{
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return;
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}
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if (OffSprite == null)
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{
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return;
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}
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SpriteOff ();
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}
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/// <summary>
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/// sets the image's sprite to off
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/// </summary>
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protected virtual void SpriteOff()
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{
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if (_image != null)
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{
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_image.sprite = OffSprite;
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}
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if (_spriteRenderer != null)
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{
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_spriteRenderer.sprite = OffSprite;
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}
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}
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/// <summary>
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/// a public method to switch to on sprite directly
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/// </summary>
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public virtual void SwitchToOnSprite()
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{
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if ((_image == null) && (_spriteRenderer == null))
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{
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return;
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}
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if (OnSprite == null)
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{
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return;
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}
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SpriteOn ();
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}
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/// <summary>
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/// sets the image's sprite to on
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/// </summary>
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protected virtual void SpriteOn()
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{
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if (_image != null)
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{
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_image.sprite = OnSprite;
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}
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if (_spriteRenderer != null)
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{
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_spriteRenderer.sprite = OnSprite;
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}
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}
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}
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}
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