mirror of
https://github.com/ClassiCube/ClassiCube.git
synced 2025-09-28 07:55:38 -04:00
373 lines
20 KiB
C#
373 lines
20 KiB
C#
// ClassicalSharp copyright 2014-2016 UnknownShadow200 | Licensed under MIT
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using System;
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using ClassicalSharp.GraphicsAPI;
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using ClassicalSharp.Map;
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using OpenTK;
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namespace ClassicalSharp {
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public unsafe sealed class AdvLightingMeshBuilder : ChunkMeshBuilder {
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int initBitFlags;
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protected override int StretchXLiquid( int xx, int countIndex, int x, int y, int z, int chunkIndex, byte block ) {
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if( OccludedLiquid( chunkIndex ) ) return 0;
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initBitFlags = ComputeLightFlags( x, y, z, chunkIndex );
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bitFlags[chunkIndex] = initBitFlags;
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int count = 1;
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x++;
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chunkIndex++;
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countIndex += Side.Sides;
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int max = chunkSize - xx;
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while( count < max && x < width && CanStretch( block, chunkIndex, x, y, z, Side.Top )
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&& !OccludedLiquid( chunkIndex ) ) {
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counts[countIndex] = 0;
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count++;
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x++;
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chunkIndex++;
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countIndex += Side.Sides;
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}
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return count;
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}
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protected override int StretchX( int xx, int countIndex, int x, int y, int z, int chunkIndex, byte block, int face ) {
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initBitFlags = ComputeLightFlags( x, y, z, chunkIndex );
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bitFlags[chunkIndex] = initBitFlags;
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int count = 1;
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x++;
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chunkIndex++;
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countIndex += Side.Sides;
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int max = chunkSize - xx;
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bool stretchTile = (info.CanStretch[block] & (1 << face)) != 0;
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while( count < max && x < width && stretchTile && CanStretch( block, chunkIndex, x, y, z, face ) ) {
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counts[countIndex] = 0;
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count++;
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x++;
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chunkIndex++;
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countIndex += Side.Sides;
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}
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return count;
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}
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protected override int StretchZ( int zz, int countIndex, int x, int y, int z, int chunkIndex, byte block, int face ) {
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initBitFlags = ComputeLightFlags( x, y, z, chunkIndex );
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bitFlags[chunkIndex] = initBitFlags;
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int count = 1;
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z++;
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chunkIndex += extChunkSize;
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countIndex += chunkSize * Side.Sides;
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int max = chunkSize - zz;
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bool stretchTile = (info.CanStretch[block] & (1 << face)) != 0;
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while( count < max && z < length && stretchTile && CanStretch( block, chunkIndex, x, y, z, face ) ) {
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counts[countIndex] = 0;
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count++;
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z++;
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chunkIndex += extChunkSize;
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countIndex += chunkSize * Side.Sides;
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}
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return count;
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}
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bool CanStretch( byte initialTile, int chunkIndex, int x, int y, int z, int face ) {
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byte rawBlock = chunk[chunkIndex];
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bitFlags[chunkIndex] = ComputeLightFlags( x, y, z, chunkIndex );
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return rawBlock == initialTile
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&& !info.IsFaceHidden( rawBlock, chunk[chunkIndex + offsets[face]], face )
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&& (initBitFlags == bitFlags[chunkIndex]
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// Check that this face is either fully bright or fully in shadow
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&& (initBitFlags == 0 || (initBitFlags & masks[face]) == masks[face]));
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}
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protected override void DrawLeftFace( int count ) {
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int texId = info.textures[curBlock * Side.Sides + Side.Left];
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int i = texId / elementsPerAtlas1D;
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float vOrigin = (texId % elementsPerAtlas1D) * invVerElementSize;
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int offset = (lightFlags >> Side.Left) & 1;
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float u1 = minBB.Z, u2 = (count - 1) + maxBB.Z * 15.99f/16f;
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float v1 = vOrigin + maxBB.Y * invVerElementSize;
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float v2 = vOrigin + minBB.Y * invVerElementSize * 15.99f/16f;
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DrawInfo part = isTranslucent ? translucentParts[i] : normalParts[i];
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int F = bitFlags[cIndex];
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int aY0_Z0 = ((F >> xM1_yM1_zM1) & 1) + ((F >> xM1_yCC_zM1) & 1) + ((F >> xM1_yM1_zCC) & 1) + ((F >> xM1_yCC_zCC) & 1);
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int aY0_Z1 = ((F >> xM1_yM1_zP1) & 1) + ((F >> xM1_yCC_zP1) & 1) + ((F >> xM1_yM1_zCC) & 1) + ((F >> xM1_yCC_zCC) & 1);
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int aY1_Z0 = ((F >> xM1_yP1_zM1) & 1) + ((F >> xM1_yCC_zM1) & 1) + ((F >> xM1_yP1_zCC) & 1) + ((F >> xM1_yCC_zCC) & 1);
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int aY1_Z1 = ((F >> xM1_yP1_zP1) & 1) + ((F >> xM1_yCC_zP1) & 1) + ((F >> xM1_yP1_zCC) & 1) + ((F >> xM1_yCC_zCC) & 1);
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int col0_0 = fullBright ? FastColour.WhitePacked : MakeXSide( aY0_Z0 ), col1_0 = fullBright ? FastColour.WhitePacked : MakeXSide( aY1_Z0 );
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int col1_1 = fullBright ? FastColour.WhitePacked : MakeXSide( aY1_Z1 ), col0_1 = fullBright ? FastColour.WhitePacked : MakeXSide( aY0_Z1 );
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if( aY0_Z0 + aY1_Z1 > aY0_Z1 + aY1_Z0 ) {
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y2, z1, u1, v1, col1_0 );
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y1, z1, u1, v2, col0_0 );
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y1, z2 + (count - 1), u2, v2, col0_1 );
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y2, z2 + (count - 1), u2, v1, col1_1 );
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} else {
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y2, z2 + (count - 1), u2, v1, col1_1 );
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y2, z1, u1, v1, col1_0 );
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y1, z1, u1, v2, col0_0 );
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part.vertices[part.vIndex.left++] = new VertexP3fT2fC4b( x1, y1, z2 + (count - 1), u2, v2, col0_1 );
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}
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}
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protected override void DrawRightFace( int count ) {
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int texId = info.textures[curBlock * Side.Sides + Side.Right];
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int i = texId / elementsPerAtlas1D;
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float vOrigin = (texId % elementsPerAtlas1D) * invVerElementSize;
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int offset = (lightFlags >> Side.Right) & 1;
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float u1 = (count - minBB.Z), u2 = (1 - maxBB.Z) * 15.99f/16f;
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float v1 = vOrigin + maxBB.Y * invVerElementSize;
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float v2 = vOrigin + minBB.Y * invVerElementSize * 15.99f/16f;
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DrawInfo part = isTranslucent ? translucentParts[i] : normalParts[i];
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int F = bitFlags[cIndex];
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int aY0_Z0 = ((F >> xP1_yM1_zM1) & 1) + ((F >> xP1_yCC_zM1) & 1) + ((F >> xP1_yM1_zCC) & 1) + ((F >> xP1_yCC_zCC) & 1);
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int aY0_Z1 = ((F >> xP1_yM1_zP1) & 1) + ((F >> xP1_yCC_zP1) & 1) + ((F >> xP1_yM1_zCC) & 1) + ((F >> xP1_yCC_zCC) & 1);
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int aY1_Z0 = ((F >> xP1_yP1_zM1) & 1) + ((F >> xP1_yCC_zM1) & 1) + ((F >> xP1_yP1_zCC) & 1) + ((F >> xP1_yCC_zCC) & 1);
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int aY1_Z1 = ((F >> xP1_yP1_zP1) & 1) + ((F >> xP1_yCC_zP1) & 1) + ((F >> xP1_yP1_zCC) & 1) + ((F >> xP1_yCC_zCC) & 1);
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int col0_0 = fullBright ? FastColour.WhitePacked : MakeXSide( aY0_Z0 ), col1_0 = fullBright ? FastColour.WhitePacked : MakeXSide( aY1_Z0 );
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int col1_1 = fullBright ? FastColour.WhitePacked : MakeXSide( aY1_Z1 ), col0_1 = fullBright ? FastColour.WhitePacked : MakeXSide( aY0_Z1 );
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if( aY0_Z0 + aY1_Z1 > aY0_Z1 + aY1_Z0 ) {
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y2, z1, u1, v1, col1_0 );
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y2, z2 + (count - 1), u2, v1, col1_1 );
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y1, z2 + (count - 1), u2, v2, col0_1 );
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y1, z1, u1, v2, col0_0 );
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} else {
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y2, z2 + (count - 1), u2, v1, col1_1 );
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y1, z2 + (count - 1), u2, v2, col0_1 );
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y1, z1, u1, v2, col0_0 );
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part.vertices[part.vIndex.right++] = new VertexP3fT2fC4b( x2, y2, z1, u1, v1, col1_0 );
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}
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}
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protected override void DrawFrontFace( int count ) {
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int texId = info.textures[curBlock * Side.Sides + Side.Front];
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int i = texId / elementsPerAtlas1D;
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float vOrigin = (texId % elementsPerAtlas1D) * invVerElementSize;
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int offset = (lightFlags >> Side.Front) & 1;
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float u1 = (count - minBB.X), u2 = (1 - maxBB.X) * 15.99f/16f;
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float v1 = vOrigin + maxBB.Y * invVerElementSize;
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float v2 = vOrigin + minBB.Y * invVerElementSize * 15.99f/16f;
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DrawInfo part = isTranslucent ? translucentParts[i] : normalParts[i];
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int F = bitFlags[cIndex];
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int aX0_Y0 = ((F >> xM1_yM1_zM1) & 1) + ((F >> xM1_yCC_zM1) & 1) + ((F >> xCC_yM1_zM1) & 1) + ((F >> xCC_yCC_zM1) & 1);
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int aX0_Y1 = ((F >> xM1_yP1_zM1) & 1) + ((F >> xM1_yCC_zM1) & 1) + ((F >> xCC_yP1_zM1) & 1) + ((F >> xCC_yCC_zM1) & 1);
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int aX1_Y0 = ((F >> xP1_yM1_zM1) & 1) + ((F >> xP1_yCC_zM1) & 1) + ((F >> xCC_yM1_zM1) & 1) + ((F >> xCC_yCC_zM1) & 1);
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int aX1_Y1 = ((F >> xP1_yP1_zM1) & 1) + ((F >> xP1_yCC_zM1) & 1) + ((F >> xCC_yP1_zM1) & 1) + ((F >> xCC_yCC_zM1) & 1);
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int col0_0 = fullBright ? FastColour.WhitePacked : MakeZSide( aX0_Y0 ), col1_0 = fullBright ? FastColour.WhitePacked : MakeZSide( aX1_Y0 );
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int col1_1 = fullBright ? FastColour.WhitePacked : MakeZSide( aX1_Y1 ), col0_1 = fullBright ? FastColour.WhitePacked : MakeZSide( aX0_Y1 );
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if( aX1_Y1 + aX0_Y0 > aX0_Y1 + aX1_Y0 ) {
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z1, u2, v2, col1_0 );
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x1, y1, z1, u1, v2, col0_0 );
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x1, y2, z1, u1, v1, col0_1 );
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z1, u2, v1, col1_1 );
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} else {
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x1, y1, z1, u1, v2, col0_0 );
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x1, y2, z1, u1, v1, col0_1 );
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z1, u2, v1, col1_1 );
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part.vertices[part.vIndex.front++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z1, u2, v2, col1_0 );
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}
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}
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protected override void DrawBackFace( int count ) {
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int texId = info.textures[curBlock * Side.Sides + Side.Back];
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int i = texId / elementsPerAtlas1D;
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float vOrigin = (texId % elementsPerAtlas1D) * invVerElementSize;
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int offset = (lightFlags >> Side.Back) & 1;
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float u1 = minBB.X, u2 = (count - 1) + maxBB.X * 15.99f/16f;
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float v1 = vOrigin + maxBB.Y * invVerElementSize;
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float v2 = vOrigin + minBB.Y * invVerElementSize * 15.99f/16f;
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DrawInfo part = isTranslucent ? translucentParts[i] : normalParts[i];
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int F = bitFlags[cIndex];
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int aX0_Y0 = ((F >> xM1_yM1_zP1) & 1) + ((F >> xM1_yCC_zP1) & 1) + ((F >> xCC_yM1_zP1) & 1) + ((F >> xCC_yCC_zP1) & 1);
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int aX1_Y0 = ((F >> xP1_yM1_zP1) & 1) + ((F >> xP1_yCC_zP1) & 1) + ((F >> xCC_yM1_zP1) & 1) + ((F >> xCC_yCC_zP1) & 1);
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int aX0_Y1 = ((F >> xM1_yP1_zP1) & 1) + ((F >> xM1_yCC_zP1) & 1) + ((F >> xCC_yP1_zP1) & 1) + ((F >> xCC_yCC_zP1) & 1);
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int aX1_Y1 = ((F >> xP1_yP1_zP1) & 1) + ((F >> xP1_yCC_zP1) & 1) + ((F >> xCC_yP1_zP1) & 1) + ((F >> xCC_yCC_zP1) & 1);
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int col1_1 = fullBright ? FastColour.WhitePacked : MakeZSide( aX1_Y1 ), col1_0 = fullBright ? FastColour.WhitePacked : MakeZSide( aX1_Y0 );
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int col0_0 = fullBright ? FastColour.WhitePacked : MakeZSide( aX0_Y0 ), col0_1 = fullBright ? FastColour.WhitePacked : MakeZSide( aX0_Y1 );
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if( aX1_Y1 + aX0_Y0 > aX0_Y1 + aX1_Y0 ) {
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x1, y2, z2, u1, v1, col0_1 );
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x1, y1, z2, u1, v2, col0_0 );
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z2, u2, v2, col1_0 );
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z2, u2, v1, col1_1 );
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} else {
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z2, u2, v1, col1_1 );
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x1, y2, z2, u1, v1, col0_1 );
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x1, y1, z2, u1, v2, col0_0 );
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part.vertices[part.vIndex.back++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z2, u2, v2, col1_0 );
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}
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}
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protected override void DrawBottomFace( int count ) {
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int texId = info.textures[curBlock * Side.Sides + Side.Bottom];
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int i = texId / elementsPerAtlas1D;
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float vOrigin = (texId % elementsPerAtlas1D) * invVerElementSize;
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int offset = (lightFlags >> Side.Bottom) & 1;
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float u1 = minBB.X, u2 = (count - 1) + maxBB.X * 15.99f/16f;
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float v1 = vOrigin + minBB.Z * invVerElementSize;
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float v2 = vOrigin + maxBB.Z * invVerElementSize * 15.99f/16f;
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DrawInfo part = isTranslucent ? translucentParts[i] : normalParts[i];
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int F = bitFlags[cIndex];
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int aX0_Z0 = ((F >> xM1_yM1_zM1) & 1) + ((F >> xM1_yM1_zCC) & 1) + ((F >> xCC_yM1_zM1) & 1) + ((F >> xCC_yM1_zCC) & 1);
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int aX1_Z0 = ((F >> xP1_yM1_zM1) & 1) + ((F >> xP1_yM1_zCC) & 1) + ((F >> xCC_yM1_zM1) & 1) + ((F >> xCC_yM1_zCC) & 1);
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int aX0_Z1 = ((F >> xM1_yM1_zP1) & 1) + ((F >> xM1_yM1_zCC) & 1) + ((F >> xCC_yM1_zP1) & 1) + ((F >> xCC_yM1_zCC) & 1);
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int aX1_Z1 = ((F >> xP1_yM1_zP1) & 1) + ((F >> xP1_yM1_zCC) & 1) + ((F >> xCC_yM1_zP1) & 1) + ((F >> xCC_yM1_zCC) & 1);
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int col0_1 = fullBright ? FastColour.WhitePacked : MakeYSide( aX0_Z1 ), col1_1 = fullBright ? FastColour.WhitePacked : MakeYSide( aX1_Z1 );
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int col1_0 = fullBright ? FastColour.WhitePacked : MakeYSide( aX1_Z0 ), col0_0 = fullBright ? FastColour.WhitePacked : MakeYSide( aX0_Z0 );
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if( aX0_Z1 + aX1_Z0 > aX0_Z0 + aX1_Z1 ) {
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z2, u2, v2, col1_1 );
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x1, y1, z2, u1, v2, col0_1 );
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x1, y1, z1, u1, v1, col0_0 );
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z1, u2, v1, col1_0 );
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} else {
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x1, y1, z2, u1, v2, col0_1 );
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x1, y1, z1, u1, v1, col0_0 );
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z1, u2, v1, col1_0 );
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part.vertices[part.vIndex.bottom++] = new VertexP3fT2fC4b( x2 + (count - 1), y1, z2, u2, v2, col1_1 );
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}
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}
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protected override void DrawTopFace( int count ) {
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int texId = info.textures[curBlock * Side.Sides + Side.Top];
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int i = texId / elementsPerAtlas1D;
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float vOrigin = (texId % elementsPerAtlas1D) * invVerElementSize;
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int offset = (lightFlags >> Side.Top) & 1;
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float u1 = minBB.X, u2 = (count - 1) + maxBB.X * 15.99f/16f;
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float v1 = vOrigin + minBB.Z * invVerElementSize;
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float v2 = vOrigin + maxBB.Z * invVerElementSize * 15.99f/16f;
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DrawInfo part = isTranslucent ? translucentParts[i] : normalParts[i];
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int F = bitFlags[cIndex];
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int aX0_Z0 = ((F >> xM1_yP1_zM1) & 1) + ((F >> xM1_yP1_zCC) & 1) + ((F >> xCC_yP1_zM1) & 1) + ((F >> xCC_yP1_zCC) & 1);
|
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int aX1_Z0 = ((F >> xP1_yP1_zM1) & 1) + ((F >> xP1_yP1_zCC) & 1) + ((F >> xCC_yP1_zM1) & 1) + ((F >> xCC_yP1_zCC) & 1);
|
|
int aX0_Z1 = ((F >> xM1_yP1_zP1) & 1) + ((F >> xM1_yP1_zCC) & 1) + ((F >> xCC_yP1_zP1) & 1) + ((F >> xCC_yP1_zCC) & 1);
|
|
int aX1_Z1 = ((F >> xP1_yP1_zP1) & 1) + ((F >> xP1_yP1_zCC) & 1) + ((F >> xCC_yP1_zP1) & 1) + ((F >> xCC_yP1_zCC) & 1);
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|
int col0_0 = fullBright ? FastColour.WhitePacked : Make( aX0_Z0 ), col1_0 = fullBright ? FastColour.WhitePacked : Make( aX1_Z0 );
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int col1_1 = fullBright ? FastColour.WhitePacked : Make( aX1_Z1 ), col0_1 = fullBright ? FastColour.WhitePacked : Make( aX0_Z1 );
|
|
|
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if( aX0_Z0 + aX1_Z1 > aX0_Z1 + aX1_Z0 ) {
|
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part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z1, u2, v1, col1_0 );
|
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part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x1, y2, z1, u1, v1, col0_0 );
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part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x1, y2, z2, u1, v2, col0_1 );
|
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part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z2, u2, v2, col1_1 );
|
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} else {
|
|
part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x1, y2, z1, u1, v1, col0_0 );
|
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part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x1, y2, z2, u1, v2, col0_1 );
|
|
part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z2, u2, v2, col1_1 );
|
|
part.vertices[part.vIndex.top++] = new VertexP3fT2fC4b( x2 + (count - 1), y2, z1, u2, v1, col1_0 );
|
|
}
|
|
}
|
|
|
|
int Make( int count ) { return Lerp( env.Shadow, env.Sun, count / 4f ); }
|
|
int MakeZSide( int count ) { return Lerp( env.ShadowZSide, env.SunZSide, count / 4f ); }
|
|
int MakeXSide( int count ) { return Lerp( env.ShadowXSide, env.SunXSide, count / 4f ); }
|
|
int MakeYSide( int count ) { return Lerp( env.ShadowYBottom, env.SunYBottom, count / 4f ); }
|
|
|
|
static int Lerp( int a, int b, float t ) {
|
|
int c = FastColour.BlackPacked;
|
|
c |= (byte)Utils.Lerp( (a & 0xFF0000) >> 16, (b & 0xFF0000) >> 16, t ) << 16;
|
|
c |= (byte)Utils.Lerp( (a & 0x00FF00) >> 8, (b & 0x00FF00) >> 8, t ) << 8;
|
|
c |= (byte)Utils.Lerp( a & 0x0000FF, b & 0x0000FF, t );
|
|
return c;
|
|
}
|
|
|
|
#region Light computation
|
|
|
|
int ComputeLightFlags( int x, int y, int z, int cIndex ) {
|
|
if( fullBright ) return (1 << xP1_yP1_zP1) - 1; // all faces fully bright
|
|
|
|
return
|
|
Lit( x - 1, y, z - 1, cIndex - 1 - 18 ) << xM1_yM1_zM1 |
|
|
Lit( x - 1, y, z, cIndex - 1 ) << xM1_yM1_zCC |
|
|
Lit( x - 1, y, z + 1, cIndex - 1 + 18 ) << xM1_yM1_zP1 |
|
|
Lit( x, y, z - 1, cIndex + 0 - 18 ) << xCC_yM1_zM1 |
|
|
Lit( x, y, z, cIndex + 0 ) << xCC_yM1_zCC |
|
|
Lit( x, y, z + 1 , cIndex + 0 + 18 ) << xCC_yM1_zP1 |
|
|
Lit( x + 1, y, z - 1, cIndex + 1 - 18 ) << xP1_yM1_zM1 |
|
|
Lit( x + 1, y, z, cIndex + 1 ) << xP1_yM1_zCC |
|
|
Lit( x + 1, y, z + 1, cIndex + 1 + 18 ) << xP1_yM1_zP1 ;
|
|
}
|
|
|
|
const int xM1_yM1_zM1 = 0, xM1_yCC_zM1 = 1, xM1_yP1_zM1 = 2;
|
|
const int xCC_yM1_zM1 = 3, xCC_yCC_zM1 = 4, xCC_yP1_zM1 = 5;
|
|
const int xP1_yM1_zM1 = 6, xP1_yCC_zM1 = 7, xP1_yP1_zM1 = 8;
|
|
|
|
const int xM1_yM1_zCC = 9, xM1_yCC_zCC = 10, xM1_yP1_zCC = 11;
|
|
const int xCC_yM1_zCC = 12, xCC_yCC_zCC = 13, xCC_yP1_zCC = 14;
|
|
const int xP1_yM1_zCC = 15, xP1_yCC_zCC = 16, xP1_yP1_zCC = 17;
|
|
|
|
const int xM1_yM1_zP1 = 18, xM1_yCC_zP1 = 19, xM1_yP1_zP1 = 20;
|
|
const int xCC_yM1_zP1 = 21, xCC_yCC_zP1 = 22, xCC_yP1_zP1 = 23;
|
|
const int xP1_yM1_zP1 = 24, xP1_yCC_zP1 = 25, xP1_yP1_zP1 = 26;
|
|
|
|
int Lit( int x, int y, int z, int cIndex ) {
|
|
if( x < 0 || y < 0 || z < 0
|
|
|| x >= width || y >= height || z >= length ) return 7;
|
|
int flags = 0;
|
|
byte block = chunk[cIndex];
|
|
int lightHeight = map.heightmap[(z * width) + x];
|
|
|
|
// Use fact Light(Y.Bottom) == Light((Y - 1).Top)
|
|
int offset = (lightFlags >> Side.Bottom) & 1;
|
|
flags |= ((y - offset) > lightHeight ? 1 : 0);
|
|
// Light is same for all the horizontal faces
|
|
flags |= (y > lightHeight ? 2 : 0);
|
|
// Use fact Light((Y + 1).Bottom) == Light(Y.Top)
|
|
offset = (lightFlags >> Side.Top) & 1;
|
|
flags |= ((y - offset) >= lightHeight ? 4 : 0);
|
|
|
|
// Dynamic lighting
|
|
if( info.FullBright[block] ) flags |= 7;
|
|
if( info.FullBright[chunk[cIndex + 324]] ) flags |= 4;
|
|
if( info.FullBright[chunk[cIndex - 324]] ) flags |= 1;
|
|
return flags;
|
|
}
|
|
|
|
static int[] masks = {
|
|
// Left face
|
|
(1 << xM1_yM1_zM1) | (1 << xM1_yM1_zCC) | (1 << xM1_yM1_zP1) |
|
|
(1 << xM1_yCC_zM1) | (1 << xM1_yCC_zCC) | (1 << xM1_yCC_zP1) |
|
|
(1 << xM1_yP1_zM1) | (1 << xM1_yP1_zCC) | (1 << xM1_yP1_zP1),
|
|
// Right face
|
|
(1 << xP1_yM1_zM1) | (1 << xP1_yM1_zCC) | (1 << xP1_yM1_zP1) |
|
|
(1 << xP1_yP1_zM1) | (1 << xP1_yP1_zCC) | (1 << xP1_yP1_zP1) |
|
|
(1 << xP1_yCC_zM1) | (1 << xP1_yCC_zCC) | (1 << xP1_yCC_zP1),
|
|
// Front face
|
|
(1 << xM1_yM1_zM1) | (1 << xCC_yM1_zM1) | (1 << xP1_yM1_zM1) |
|
|
(1 << xM1_yCC_zM1) | (1 << xCC_yCC_zM1) | (1 << xP1_yCC_zM1) |
|
|
(1 << xM1_yP1_zM1) | (1 << xCC_yP1_zM1) | (1 << xP1_yP1_zM1),
|
|
// Back face
|
|
(1 << xM1_yM1_zP1) | (1 << xCC_yM1_zP1) | (1 << xP1_yM1_zP1) |
|
|
(1 << xM1_yCC_zP1) | (1 << xCC_yCC_zP1) | (1 << xP1_yCC_zP1) |
|
|
(1 << xM1_yP1_zP1) | (1 << xCC_yP1_zP1) | (1 << xP1_yP1_zP1),
|
|
// Bottom face
|
|
(1 << xM1_yM1_zM1) | (1 << xM1_yM1_zCC) | (1 << xM1_yM1_zP1) |
|
|
(1 << xCC_yM1_zM1) | (1 << xCC_yM1_zCC) | (1 << xCC_yM1_zP1) |
|
|
(1 << xP1_yM1_zM1) | (1 << xP1_yM1_zCC) | (1 << xP1_yM1_zP1),
|
|
// Top face
|
|
(1 << xM1_yP1_zM1) | (1 << xM1_yP1_zCC) | (1 << xM1_yP1_zP1) |
|
|
(1 << xCC_yP1_zM1) | (1 << xCC_yP1_zCC) | (1 << xCC_yP1_zP1) |
|
|
(1 << xP1_yP1_zM1) | (1 << xP1_yP1_zCC) | (1 << xP1_yP1_zP1),
|
|
};
|
|
|
|
#endregion
|
|
}
|
|
} |