ClassiCube/ClassicalSharp/Blocks/BlockInfo.Atlas.cs
2017-01-25 21:16:11 +11:00

73 lines
No EOL
2.9 KiB
C#

// Copyright 2014-2017 ClassicalSharp | Licensed under BSD-3
using System;
using OpenTK;
namespace ClassicalSharp {
/// <summary> Stores various properties about the blocks in Minecraft Classic. </summary>
public partial class BlockInfo {
public byte[] textures = new byte[Block.Count * Side.Sides];
internal void SetSide(int textureId, byte blockId) {
int index = blockId * Side.Sides;
for (int i = index; i < index + Side.Bottom; i++)
textures[i] = (byte)textureId;
}
internal void SetTex(int textureId, int face, byte blockId) {
textures[blockId * Side.Sides + face] = (byte)textureId;
}
/// <summary> Gets the index in the terrain atlas for the texture of the face of the given block. </summary>
/// <param name="face"> Face of the given block, see TileSide constants. </param>
public int GetTextureLoc(byte block, int face) {
return textures[block * Side.Sides + face];
}
void GetTextureRegion(byte block, int side, out Vector2 min, out Vector2 max) {
min = Vector2.Zero; max = Vector2.One;
Vector3 bbMin = MinBB[block], bbMax = MaxBB[block];
switch (side) {
case Side.Left:
case Side.Right:
min = new Vector2(bbMin.Z, bbMin.Y);
max = new Vector2(bbMax.Z, bbMax.Y);
if (IsLiquid(block)) { min.Y -= 1.5f/16; max.Y -= 1.5f/16; }
break;
case Side.Front:
case Side.Back:
min = new Vector2(bbMin.X, bbMin.Y);
max = new Vector2(bbMax.X, bbMax.Y);
if (IsLiquid(block)) { min.Y -= 1.5f/16; max.Y -= 1.5f/16; }
break;
case Side.Top:
case Side.Bottom:
min = new Vector2(bbMin.X, bbMin.Z);
max = new Vector2(bbMax.X, bbMax.Z);
break;
}
}
bool FaceOccluded(byte block, byte other, int side) {
Vector2 bMin, bMax, oMin, oMax;
GetTextureRegion(block, side, out bMin, out bMax);
GetTextureRegion(other, side, out oMin, out oMax);
return bMin.X >= oMin.X && bMin.Y >= oMin.Y
&& bMax.X <= oMax.X && bMax.Y <= oMax.Y;
}
static byte[] topTex = new byte[] { 0, 1, 0, 2, 16, 4, 15, 17, 14, 14,
30, 30, 18, 19, 32, 33, 34, 21, 22, 48, 49, 64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79, 13, 12, 29, 28, 24, 23, 6, 6, 7, 9, 4,
36, 37, 16, 11, 25, 50, 38, 80, 81, 82, 83, 84, 51, 54, 86, 26, 53, 52, };
static byte[] sideTex = new byte[] { 0, 1, 3, 2, 16, 4, 15, 17, 14, 14,
30, 30, 18, 19, 32, 33, 34, 20, 22, 48, 49, 64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79, 13, 12, 29, 28, 40, 39, 5, 5, 7, 8, 35,
36, 37, 16, 11, 41, 50, 38, 80, 81, 82, 83, 84, 51, 54, 86, 42, 53, 52, };
static byte[] bottomTex = new byte[] { 0, 1, 2, 2, 16, 4, 15, 17, 14, 14,
30, 30, 18, 19, 32, 33, 34, 21, 22, 48, 49, 64, 65, 66, 67, 68, 69, 70, 71,
72, 73, 74, 75, 76, 77, 78, 79, 13, 12, 29, 28, 56, 55, 6, 6, 7, 10, 4,
36, 37, 16, 11, 57, 50, 38, 80, 81, 82, 83, 84, 51, 54, 86, 58, 53, 52 };
}
}