mirror of
https://github.com/ClassiCube/ClassiCube.git
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290 lines
10 KiB
C#
290 lines
10 KiB
C#
// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
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using System;
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using ClassicalSharp.Entities;
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using ClassicalSharp.GraphicsAPI;
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using ClassicalSharp.Physics;
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using ClassicalSharp.Renderers;
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using ClassicalSharp.Textures;
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using OpenTK;
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namespace ClassicalSharp.Model {
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public class BlockModel : IModel {
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byte block = (byte)Block.Air;
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float height;
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TerrainAtlas1D atlas;
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bool bright;
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Vector3 minBB, maxBB;
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public bool NoShade = false, SwitchOrder = false;
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public float CosX = 1, SinX = 0;
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ModelCache cache;
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public BlockModel(Game game) : base(game) {
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cache = game.ModelCache;
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}
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internal override void CreateParts() { }
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public override bool Bobbing { get { return false; } }
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public override float NameYOffset { get { return height + 0.075f; } }
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public override float GetEyeY(Entity entity) {
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byte block = Byte.Parse(entity.ModelName);
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float minY = game.BlockInfo.MinBB[block].Y;
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float maxY = game.BlockInfo.MaxBB[block].Y;
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return block == 0 ? 1 : (minY + maxY) / 2;
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}
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static Vector3 colShrink = new Vector3(0.75f/16, 0.75f/16, 0.75f/16);
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public override Vector3 CollisionSize {
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get { return (maxBB - minBB) - colShrink; } // to fit slightly inside
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}
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static Vector3 offset = new Vector3(-0.5f, -0.5f, -0.5f);
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public override AABB PickingBounds {
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get { return new AABB(minBB, maxBB).Offset(offset); }
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}
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public void CalcState(byte block) {
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if (game.BlockInfo.Draw[block] == DrawType.Gas) {
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bright = false;
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minBB = Vector3.Zero;
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maxBB = Vector3.One;
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height = 1;
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} else {
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bright = game.BlockInfo.FullBright[block];
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minBB = game.BlockInfo.MinBB[block];
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maxBB = game.BlockInfo.MaxBB[block];
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height = maxBB.Y - minBB.Y;
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if (game.BlockInfo.Draw[block] == DrawType.Sprite)
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height = 1;
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}
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}
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public override bool ShouldRender(Entity p, FrustumCulling culling) {
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block = Utils.FastByte(p.ModelName);
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CalcState(block);
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return base.ShouldRender(p, culling);
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}
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public override float RenderDistance(Entity p) {
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block = Utils.FastByte(p.ModelName);
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CalcState(block);
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return base.RenderDistance(p);
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}
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int lastTexId = -1;
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int colPacked;
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protected override void DrawModel(Player p) {
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// TODO: using 'is' is ugly, but means we can avoid creating
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// a string every single time held block changes.
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if (p is FakePlayer) {
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Player realP = game.LocalPlayer;
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col = game.World.IsLit(realP.EyePosition)
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? game.World.Env.Sunlight : game.World.Env.Shadowlight;
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// Adjust pitch so angle when looking straight down is 0.
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float adjPitch = realP.PitchDegrees - 90;
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if (adjPitch < 0) adjPitch += 360;
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// Adjust colour so held block is brighter when looking straght up
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float t = Math.Abs(adjPitch - 180) / 180;
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float colScale = Utils.Lerp(0.9f, 0.7f, t);
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col = FastColour.Scale(col, colScale);
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block = ((FakePlayer)p).Block;
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} else {
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block = Utils.FastByte(p.ModelName);
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}
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CalcState(block);
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colPacked = col.Pack();
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if (game.BlockInfo.Draw[block] == DrawType.Gas) return;
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lastTexId = -1;
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atlas = game.TerrainAtlas1D;
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bool sprite = game.BlockInfo.Draw[block] == DrawType.Sprite;
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DrawParts(sprite);
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if (index == 0) return;
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IGraphicsApi gfx = game.Graphics;
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gfx.BindTexture(lastTexId);
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TransformVertices();
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if (sprite) gfx.FaceCulling = true;
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UpdateVB();
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if (sprite) gfx.FaceCulling = false;
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}
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void FlushIfNotSame(int texIndex) {
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int texId = game.TerrainAtlas1D.TexIds[texIndex];
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if (texId == lastTexId) return;
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if (lastTexId != -1) {
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game.Graphics.BindTexture(lastTexId);
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TransformVertices();
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UpdateVB();
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}
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lastTexId = texId;
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index = 0;
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}
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void TransformVertices() {
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for (int i = 0; i < index; i++) {
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VertexP3fT2fC4b v = cache.vertices[i];
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float t = 0;
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t = CosX * v.Y + SinX * v.Z; v.Z = -SinX * v.Y + CosX * v.Z; v.Y = t; // Inlined RotX
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t = cosYaw * v.X - sinYaw * v.Z; v.Z = sinYaw * v.X + cosYaw * v.Z; v.X = t; // Inlined RotY
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v.X *= scale; v.Y *= scale; v.Z *= scale;
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v.X += pos.X; v.Y += pos.Y; v.Z += pos.Z;
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cache.vertices[i] = v;
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}
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}
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void DrawParts(bool sprite) {
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// SwitchOrder is needed for held block, which renders without depth testing
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if (sprite) {
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if (SwitchOrder) {
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SpriteZQuad(Side.Back, false);
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SpriteXQuad(Side.Right, false);
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} else {
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SpriteXQuad(Side.Right, false);
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SpriteZQuad(Side.Back, false);
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}
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if (SwitchOrder) {
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SpriteXQuad(Side.Right, true);
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SpriteZQuad(Side.Back, true);
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} else {
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SpriteZQuad(Side.Back, true);
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SpriteXQuad(Side.Right, true);
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}
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} else {
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YQuad(0, Side.Bottom, FastColour.ShadeYBottom);
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if (SwitchOrder) {
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XQuad(maxBB.X - 0.5f, Side.Right, true, FastColour.ShadeX);
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ZQuad(maxBB.Z - 0.5f, Side.Back, false, FastColour.ShadeZ);
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XQuad(minBB.X - 0.5f, Side.Left, false, FastColour.ShadeX);
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ZQuad(minBB.Z - 0.5f, Side.Front, true, FastColour.ShadeZ);
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} else {
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ZQuad(minBB.Z - 0.5f, Side.Front, true, FastColour.ShadeZ);
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XQuad(maxBB.X - 0.5f, Side.Right, true, FastColour.ShadeX);
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ZQuad(maxBB.Z - 0.5f, Side.Back, false, FastColour.ShadeZ);
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XQuad(minBB.X - 0.5f, Side.Left, false, FastColour.ShadeX);
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}
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YQuad(height, Side.Top, 1.0f);
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}
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}
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void YQuad(float y, int side, float shade) {
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int texId = game.BlockInfo.GetTextureLoc(block, side), texIndex = 0;
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TextureRec rec = atlas.GetTexRec(texId, 1, out texIndex);
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FlushIfNotSame(texIndex);
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int col = bright ? FastColour.WhitePacked : (NoShade ? colPacked : FastColour.Scale(this.col, shade).Pack());
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float vOrigin = (texId % atlas.elementsPerAtlas1D) * atlas.invElementSize;
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rec.U1 = minBB.X; rec.U2 = maxBB.X;
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rec.V1 = vOrigin + minBB.Z * atlas.invElementSize;
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rec.V2 = vOrigin + maxBB.Z * atlas.invElementSize * 15.99f/16f;
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cache.vertices[index++] = new VertexP3fT2fC4b(minBB.X - 0.5f, y, minBB.Z - 0.5f, rec.U1, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(maxBB.X - 0.5f, y, minBB.Z - 0.5f, rec.U2, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(maxBB.X - 0.5f, y, maxBB.Z - 0.5f, rec.U2, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(minBB.X - 0.5f, y, maxBB.Z - 0.5f, rec.U1, rec.V2, col);
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}
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void ZQuad(float z, int side, bool swapU, float shade) {
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int texId = game.BlockInfo.GetTextureLoc(block, side), texIndex = 0;
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TextureRec rec = atlas.GetTexRec(texId, 1, out texIndex);
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FlushIfNotSame(texIndex);
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int col = bright ? FastColour.WhitePacked : (NoShade ? colPacked : FastColour.Scale(this.col, shade).Pack());
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float vOrigin = (texId % atlas.elementsPerAtlas1D) * atlas.invElementSize;
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rec.U1 = minBB.X; rec.U2 = maxBB.X;
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rec.V1 = vOrigin + (1 - minBB.Y) * atlas.invElementSize;
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rec.V2 = vOrigin + (1 - maxBB.Y) * atlas.invElementSize * 15.99f/16f;
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if (swapU) rec.SwapU();
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cache.vertices[index++] = new VertexP3fT2fC4b(minBB.X - 0.5f, 0, z, rec.U1, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(minBB.X - 0.5f, height, z, rec.U1, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(maxBB.X - 0.5f, height, z, rec.U2, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(maxBB.X - 0.5f, 0, z, rec.U2, rec.V1, col);
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}
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void XQuad(float x, int side, bool swapU, float shade) {
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int texId = game.BlockInfo.GetTextureLoc(block, side), texIndex = 0;
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TextureRec rec = atlas.GetTexRec(texId, 1, out texIndex);
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FlushIfNotSame(texIndex);
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int col = bright ? FastColour.WhitePacked : (NoShade ? colPacked : FastColour.Scale(this.col, shade).Pack());
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float vOrigin = (texId % atlas.elementsPerAtlas1D) * atlas.invElementSize;
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rec.U1 = minBB.Z; rec.U2 = maxBB.Z;
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rec.V1 = vOrigin + (1 - minBB.Y) * atlas.invElementSize;
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rec.V2 = vOrigin + (1 - maxBB.Y) * atlas.invElementSize * 15.99f/16f;
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if (swapU) rec.SwapU();
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cache.vertices[index++] = new VertexP3fT2fC4b(x, 0, minBB.Z - 0.5f, rec.U1, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(x, height, minBB.Z - 0.5f, rec.U1, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(x, height, maxBB.Z - 0.5f, rec.U2, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(x, 0, maxBB.Z - 0.5f, rec.U2, rec.V1, col);
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}
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void SpriteZQuad(int side, bool firstPart) {
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SpriteZQuad(side, firstPart, false);
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SpriteZQuad(side, firstPart, true);
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}
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void SpriteZQuad(int side, bool firstPart, bool mirror) {
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int texId = game.BlockInfo.GetTextureLoc(block, side), texIndex = 0;
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TextureRec rec = atlas.GetTexRec(texId, 1, out texIndex);
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FlushIfNotSame(texIndex);
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if (height != 1)
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rec.V2 = rec.V1 + height * atlas.invElementSize * (15.99f/16f);
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int col = bright ? FastColour.WhitePacked : this.col.Pack();
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float p1 = 0, p2 = 0;
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if (firstPart) { // Need to break into two quads for when drawing a sprite model in hand.
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if (mirror) { rec.U1 = 0.5f; p1 = -5.5f/16; }
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else { rec.U2 = 0.5f; p2 = -5.5f/16; }
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} else {
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if (mirror) { rec.U2 = 0.5f; p2 = 5.5f/16; }
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else { rec.U1 = 0.5f; p1 = 5.5f/16; }
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}
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cache.vertices[index++] = new VertexP3fT2fC4b(p1, 0, p1, rec.U2, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(p1, 1, p1, rec.U2, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(p2, 1, p2, rec.U1, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(p2, 0, p2, rec.U1, rec.V2, col);
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}
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void SpriteXQuad(int side, bool firstPart) {
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SpriteXQuad(side, firstPart, false);
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SpriteXQuad(side, firstPart, true);
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}
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void SpriteXQuad(int side, bool firstPart, bool mirror) {
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int texId = game.BlockInfo.GetTextureLoc(block, side), texIndex = 0;
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TextureRec rec = atlas.GetTexRec(texId, 1, out texIndex);
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FlushIfNotSame(texIndex);
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if (height != 1)
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rec.V2 = rec.V1 + height * atlas.invElementSize * (15.99f/16f);
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int col = bright ? FastColour.WhitePacked : this.col.Pack();
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float x1 = 0, x2 = 0, z1 = 0, z2 = 0;
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if (firstPart) {
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if (mirror) { rec.U2 = 0.5f; x2 = -5.5f/16; z2 = 5.5f/16; }
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else { rec.U1 = 0.5f; x1 = -5.5f/16; z1 = 5.5f/16; }
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} else {
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if (mirror) { rec.U1 = 0.5f; x1 = 5.5f/16; z1 = -5.5f/16; }
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else { rec.U2 = 0.5f; x2 = 5.5f/16; z2 = -5.5f/16; }
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}
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cache.vertices[index++] = new VertexP3fT2fC4b(x1, 0, z1, rec.U2, rec.V2, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(x1, 1, z1, rec.U2, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(x2, 1, z2, rec.U1, rec.V1, col);
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cache.vertices[index++] = new VertexP3fT2fC4b(x2, 0, z2, rec.U1, rec.V2, col);
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}
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}
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} |