// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
using System;
using ClassicalSharp.Entities;
using ClassicalSharp.GraphicsAPI;
using ClassicalSharp.Physics;
using ClassicalSharp.Renderers;
using OpenTK;

namespace ClassicalSharp.Model {

	public class SheepModel : IModel {

		public bool Fur = true;
		int furIndex;
		
		public SheepModel(Game game) : base(game) {
			furIndex = game.ModelCache.GetTextureIndex("sheep_fur.png");
		}
		
		internal override void CreateParts() {
			vertices = new ModelVertex[boxVertices * 6 * (Fur ? 2 : 1)];
			Head = BuildBox(MakeBoxBounds(-3, 16, -14, 3, 22, -6)
			                .TexOrigin(0, 0)
			                .RotOrigin(0, 18, -8));
			Torso = BuildRotatedBox(MakeRotatedBoxBounds(-4, 12, -8, 4, 18, 8)
			                        .TexOrigin(28, 8));
			LeftLegFront = BuildBox(MakeBoxBounds(-5, 0, -7, -1, 12, -3)
			                        .TexOrigin(0, 16)
			                        .RotOrigin(0, 12, -5));
			RightLegFront = BuildBox(MakeBoxBounds(1, 0, -7, 5, 12, -3)
			                         .TexOrigin(0, 16)
			                         .RotOrigin(0, 12, -5));
			LeftLegBack = BuildBox(MakeBoxBounds(-5, 0, 5, -1, 12, 9)
			                       .TexOrigin(0, 16)
			                       .RotOrigin(0, 12, 7));
			RightLegBack = BuildBox(MakeBoxBounds(1, 0, 5, 5, 12, 9)
			                        .TexOrigin(0, 16)
			                        .RotOrigin(0, 12, 7));
			if (Fur) MakeFurModel();
		}
		
		
		void MakeFurModel() {
			FurHead = BuildBox(MakeBoxBounds(-3, -3, -3, 3, 3, 3)
			                   .TexOrigin(0, 0)
			                   .SetModelBounds(-3.5f, 15.5f, -12.5f, 3.5f, 22.5f, -5.5f)
			                   .RotOrigin(0, 18, -8));
			FurTorso = BuildRotatedBox(MakeRotatedBoxBounds(-4, 12, -8, 4, 18, 8)
			                           .TexOrigin(28, 8)
			                           .SetModelBounds(-6f, 10.5f, -10f, 6f, 19.5f, 10f));
			
			BoxDesc legDesc = MakeBoxBounds(-2, -3, -2, 2, 3, 2)
				.TexOrigin(0, 16);
			FurLeftLegFront = BuildBox(legDesc.SetModelBounds(-5.5f, 5.5f, -7.5f, -0.5f, 12.5f, -2.5f)
			                           .RotOrigin(0, 12, -5));
			FurRightLegFront = BuildBox(legDesc.SetModelBounds(0.5f, 5.5f, -7.5f, 5.5f, 12.5f, -2.5f)
			                            .RotOrigin(0, 12, -5));
			FurLeftLegBack = BuildBox(legDesc.SetModelBounds(-5.5f, 5.5f, 4.5f, -0.5f, 12.5f, 9.5f)
			                          .RotOrigin(0, 12, 7));
			FurRightLegBack = BuildBox(legDesc.SetModelBounds(0.5f, 5.5f, 4.5f, 5.5f, 12.5f, 9.5f)
			                           .RotOrigin(0, 12, 7));
		}
		
		public override bool Bobbing { get { return true; } }
		
		public override float NameYOffset { get { return Fur ? 1.48125f: 1.075f; } }
		
		public override float GetEyeY(Entity entity) { return 20/16f; }
		
		public override Vector3 CollisionSize {
			get { return new Vector3(10/16f, 20/16f, 10/16f); }
		}
		
		public override AABB PickingBounds {
			get { return new AABB(-6/16f, 0, -13/16f, 6/16f, 23/16f, 10/16f); }
		}
		
		protected override void DrawModel(Player p) {
			IGraphicsApi gfx = game.Graphics;
			gfx.BindTexture(GetTexture(p.MobTextureId));
			DrawHeadRotate(-p.PitchRadians, 0, 0, Head);
			
			DrawPart(Torso);
			DrawRotate(p.anim.legXRot, 0, 0, LeftLegFront);
			DrawRotate(-p.anim.legXRot, 0, 0, RightLegFront);
			DrawRotate(-p.anim.legXRot, 0, 0, LeftLegBack);
			DrawRotate(p.anim.legXRot, 0, 0, RightLegBack);
			UpdateVB();
			
			if (!Fur) return;
			ModelCache cache = game.ModelCache;
			gfx.BindTexture(cache.Textures[furIndex].TexID);
			DrawHeadRotate(-p.PitchRadians, 0, 0, FurHead);
			
			DrawPart(FurTorso);
			DrawRotate(p.anim.legXRot, 0, 0, FurLeftLegFront);
			DrawRotate(-p.anim.legXRot, 0, 0, FurRightLegFront);
			DrawRotate(-p.anim.legXRot, 0, 0, FurLeftLegBack);
			DrawRotate(p.anim.legXRot, 0, 0, FurRightLegBack);
			UpdateVB();
		}
		
		ModelPart Head, Torso, LeftLegFront, RightLegFront, LeftLegBack, RightLegBack;
		ModelPart FurHead, FurTorso, FurLeftLegFront, FurRightLegFront, FurLeftLegBack, FurRightLegBack;
	}
}