/******************************************************************************
 * Spine Runtimes License Agreement
 * Last updated January 1, 2020. Replaces all prior versions.
 *
 * Copyright (c) 2013-2020, Esoteric Software LLC
 *
 * Integration of the Spine Runtimes into software or otherwise creating
 * derivative works of the Spine Runtimes is permitted under the terms and
 * conditions of Section 2 of the Spine Editor License Agreement:
 * http://esotericsoftware.com/spine-editor-license
 *
 * Otherwise, it is permitted to integrate the Spine Runtimes into software
 * or otherwise create derivative works of the Spine Runtimes (collectively,
 * "Products"), provided that each user of the Products must obtain their own
 * Spine Editor license and redistribution of the Products in any form must
 * include this license and copyright notice.
 *
 * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
 * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THE SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

using Spine.Unity.AttachmentTools;
using Spine.Unity;
using Spine;

public class EquipsVisualsComponentExample : MonoBehaviour
{
    public SkeletonAnimation skeletonAnimation;

    [SpineSkin]
    public string templateSkinName;

    Spine.Skin equipsSkin;
    Spine.Skin collectedSkin;

    public Material runtimeMaterial;
    public Texture2D runtimeAtlas;

    void Start()
    {
        equipsSkin = new Skin("Equips");

        // OPTIONAL: Add all the attachments from the template skin.
        var templateSkin = skeletonAnimation.Skeleton.Data.FindSkin(templateSkinName);
        if (templateSkin != null)
            equipsSkin.AddAttachments(templateSkin);

        skeletonAnimation.Skeleton.Skin = equipsSkin;
        RefreshSkeletonAttachments();
    }

    public void Skin(string name)
    {
        templateSkinName = name;
        Start();
    }
    public void Equip(int slotIndex, string attachmentName, Attachment attachment)
    {
        equipsSkin.SetAttachment(slotIndex, attachmentName, attachment);
        skeletonAnimation.Skeleton.SetSkin(equipsSkin);
        RefreshSkeletonAttachments();
    }

    public void OptimizeSkin()
    {
        // 1. Collect all the attachments of all active skins.
        collectedSkin = collectedSkin ?? new Skin("Collected skin");
        collectedSkin.Clear();
        collectedSkin.AddAttachments(skeletonAnimation.Skeleton.Data.DefaultSkin);
        collectedSkin.AddAttachments(equipsSkin);

        // 2. Create a repacked skin.
        // Note: materials and textures returned by GetRepackedSkin() behave like 'new Texture2D()' and need to be destroyed
        if (runtimeMaterial)
            Destroy(runtimeMaterial);
        if (runtimeAtlas)
            Destroy(runtimeAtlas);
        var repackedSkin = collectedSkin.GetRepackedSkin("Repacked skin", skeletonAnimation.SkeletonDataAsset.atlasAssets[0].PrimaryMaterial, out runtimeMaterial, out runtimeAtlas);
        collectedSkin.Clear();

        // 3. Use the repacked skin.
        skeletonAnimation.Skeleton.Skin = repackedSkin;
        RefreshSkeletonAttachments();
    }

    void RefreshSkeletonAttachments()
    {
        skeletonAnimation.Skeleton.SetSlotsToSetupPose();
        skeletonAnimation.AnimationState.Apply(skeletonAnimation.Skeleton); //skeletonAnimation.Update(0);
    }
}