/******************************************************************************
 * Spine Runtimes Software License
 * Version 2
 * 
 * Copyright (c) 2013, Esoteric Software
 * All rights reserved.
 * 
 * You are granted a perpetual, non-exclusive, non-sublicensable and
 * non-transferable license to install, execute and perform the Spine Runtimes
 * Software (the "Software") solely for internal use. Without the written
 * permission of Esoteric Software, you may not (a) modify, translate, adapt or
 * otherwise create derivative works, improvements of the Software or develop
 * new applications using the Software or (b) remove, delete, alter or obscure
 * any trademarks or any copyright, trademark, patent or other intellectual
 * property or proprietary rights notices on or in the Software, including
 * any copy thereof. Redistributions in binary or source form must include
 * this license and terms. THIS SOFTWARE IS PROVIDED BY ESOTERIC SOFTWARE
 * "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 SOFTARE BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 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
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *****************************************************************************/

using System;
using System.IO;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.GamerServices;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Media;
using Spine;

namespace Spine {
	public class Example : Microsoft.Xna.Framework.Game {
		GraphicsDeviceManager graphics;
		SkeletonRenderer skeletonRenderer;
		Skeleton skeleton;
		Slot headSlot;
		AnimationState state;
		SkeletonBounds bounds = new SkeletonBounds();

		public Example () {
			IsMouseVisible = true;

			graphics = new GraphicsDeviceManager(this);
			graphics.IsFullScreen = false;
			graphics.PreferredBackBufferWidth = 640;
			graphics.PreferredBackBufferHeight = 480;
		}

		protected override void Initialize () {
			// TODO: Add your initialization logic here

			base.Initialize();
		}

		protected override void LoadContent () {
			skeletonRenderer = new SkeletonRenderer(GraphicsDevice);
			skeletonRenderer.PremultipliedAlpha = true;

			String name = "spineboy"; // "goblins";

			Atlas atlas = new Atlas("data/" + name + ".atlas", new XnaTextureLoader(GraphicsDevice));
			SkeletonJson json = new SkeletonJson(atlas);
			skeleton = new Skeleton(json.ReadSkeletonData("data/" + name + ".json"));
			if (name == "goblins") skeleton.SetSkin("goblingirl");
			skeleton.SetSlotsToSetupPose(); // Without this the skin attachments won't be attached. See SetSkin.

			// Define mixing between animations.
			AnimationStateData stateData = new AnimationStateData(skeleton.Data);
			if (name == "spineboy") {
				stateData.SetMix("walk", "jump", 0.2f);
				stateData.SetMix("jump", "walk", 0.4f);
			}

			state = new AnimationState(stateData);

			if (true) {
				// Event handling for all animations.
				state.Start += Start;
				state.End += End;
				state.Complete += Complete;
				state.Event += Event;

				state.SetAnimation(0, "drawOrder", true);
			} else {
				state.SetAnimation(0, "walk", false);
				TrackEntry entry = state.AddAnimation(0, "jump", false, 0);
				entry.End += End; // Event handling for queued animations.
				state.AddAnimation(0, "walk", true, 0);
			}

			skeleton.X = 320;
			skeleton.Y = 440;
			skeleton.UpdateWorldTransform();

			headSlot = skeleton.FindSlot("head");
		}

		protected override void UnloadContent () {
			// TODO: Unload any non ContentManager content here
		}

		protected override void Update (GameTime gameTime) {
			// Allows the game to exit
			if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
				this.Exit();

			// TODO: Add your update logic here

			base.Update(gameTime);
		}

		protected override void Draw (GameTime gameTime) {
			GraphicsDevice.Clear(Color.Black);

			state.Update(gameTime.ElapsedGameTime.Milliseconds / 1000f);
			state.Apply(skeleton);
			skeleton.UpdateWorldTransform();
			skeletonRenderer.Begin();
			skeletonRenderer.Draw(skeleton);
			skeletonRenderer.End();

			bounds.Update(skeleton, true);
			MouseState mouse = Mouse.GetState();
			headSlot.G = 1;
			headSlot.B = 1;
			if (bounds.AabbContainsPoint(mouse.X, mouse.Y)) {
				BoundingBoxAttachment hit = bounds.ContainsPoint(mouse.X, mouse.Y);
				if (hit != null) {
					headSlot.G = 0;
					headSlot.B = 0;
				}
			}

			base.Draw(gameTime);
		}

		public void Start (AnimationState state, int trackIndex) {
			Console.WriteLine(trackIndex + " " + state.GetCurrent(trackIndex) + ": start");
		}

		public void End (AnimationState state, int trackIndex) {
			Console.WriteLine(trackIndex + " " + state.GetCurrent(trackIndex) + ": end");
		}

		public void Complete (AnimationState state, int trackIndex, int loopCount) {
			Console.WriteLine(trackIndex + " " + state.GetCurrent(trackIndex) + ": complete " + loopCount);
		}

		public void Event (AnimationState state, int trackIndex, Event e) {
			Console.WriteLine(trackIndex + " " + state.GetCurrent(trackIndex) + ": event " + e);
		}
	}
}