Voxel Generation Crash, No Error In The File

Tbjbu1 · December 30, 2016, 4:08pm

I was following this tutorial to create voxel terrain with chunks https://www.youtube.com/watch?v=4jni5NV_EjE

But somewhere in this part, it causes the editor to crash whenever I generate a chunk:


					// Add faces, verticies, UVs and Normals.
					int Triangle_num = 0;
					for (int I = 0; 1 < 6; I++)
					{
						int NewIndex = Index + bMask*.X + (bMask*.Y * ChunkLineElements) + (bMask*.Z * ChunkLineElementsP2);

						bool flag = false;
						if(MeshIndex >= 20) flag = true;
						else if((X + bMask*.X < ChunkLineElements) && (X + bMask*.X >= 0) && (Y + bMask*.Y < ChunkLineElements) && (Y + bMask*.Y >= 0))
						{
							if (NewIndex < ChunkFields.Num() && NewIndex >= 0)
								if (ChunkFields[NewIndex] < 1) flag = true;
						}
						else flag = true;

						if (flag) {
							Triangles.Add(bTriangles[0] + Triangle_num + ElementID);
							Triangles.Add(bTriangles[1] + Triangle_num + ElementID);
							Triangles.Add(bTriangles[2] + Triangle_num + ElementID);
							Triangles.Add(bTriangles[3] + Triangle_num + ElementID);
							Triangles.Add(bTriangles[4] + Triangle_num + ElementID);
							Triangles.Add(bTriangles[5] + Triangle_num + ElementID);
							Triangle_num += 4; // Add 4 verticies to next triangle.

							switch (I) {
								case 0: {
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));

									Normals.Append(bNormals0, ARRAY_COUNT(bNormals0));
									break;
								}
								case 1: {
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));

									Normals.Append(bNormals1, ARRAY_COUNT(bNormals1));
									break;
								}
								case 2: {
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));

									Normals.Append(bNormals2, ARRAY_COUNT(bNormals2));
									break;
								}
								case 3: {
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));

									Normals.Append(bNormals3, ARRAY_COUNT(bNormals3));
									break;
								}
								case 4: {
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));

									Normals.Append(bNormals5, ARRAY_COUNT(bNormals4));
									break;
								}
								case 5: {
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), -VoxelSizeHalf + (Z * VoxelSize)));
									Vertices.Add(FVector(-VoxelSizeHalf + (X * VoxelSize), -VoxelSizeHalf + (Y * VoxelSize), VoxelSizeHalf + (Z * VoxelSize)));

									Normals.Append(bNormals4, ARRAY_COUNT(bNormals5));
									break;
								}
							}
							UVs.Append(bUVs, ARRAY_COUNT(bUVs));
							//FColor color = FColor::MakeRandomColor();

							//FColor color = FColor(RandomStream.FRand() * 256, RandomStream.FRand() * 256, RandomStream.FRand() * 256, rand() % 5);
							FColor color = FColor(255, 255, 255, I);
							VertexColors.Add(color); VertexColors.Add(color); VertexColors.Add(color); VertexColors.Add(color);
						}
					}

I’m pretty new at C++ so I cant really find my mistake here, there is no error showing anywhere…

Oh and also this part is in the start of the file:


const int32 bTriangles] = { 2, 1, 0, 0, 3, 2 };
const FVector2D bUVs] = { FVector2D(0.0, 0.0), FVector2D(0.0, 1.0), FVector2D(1.0, 1.0), FVector2D(1.0, 0.0) };
const FVector bNormals0] = { FVector(0, 0, 1), FVector(0, 0, 1), FVector(0, 0, 1), FVector(0, 0, 1) };
const FVector bNormals1] = { FVector(0, 0, -1), FVector(0, 0, -1), FVector(0, 0, -1), FVector(0, 0, -1) };
const FVector bNormals2] = { FVector(0, 1, 0), FVector(0, 1, 0), FVector(0, 1, 0), FVector(0, 1, 0) };
const FVector bNormals3] = { FVector(0, -1, 1), FVector(0, -1, 0), FVector(0, -1, 0), FVector(0, -1, 0) };
const FVector bNormals4] = { FVector(1, 0, 1), FVector(1, 0, 0), FVector(1, 0, 0), FVector(1, 0, 0) };
const FVector bNormals5] = { FVector(-1, 0, 1), FVector(-1, 0, 0), FVector(-1, 0, 0), FVector(-1, 0, 0) };
const FVector bMask] = { FVector(0.0, 0.0, 1.0), FVector(0.0, 0.0, -1.0), FVector(0.0, 1.0, 0.0), FVector(0.0, -1.0, 0.0), FVector(1.0, 0.0, 0.0), FVector(-1.0, 0.0, 0.0)};

Someone see anything wrong here? Tried my best to figure it out but It’s still crashing

ProlixLegend · December 31, 2016, 4:59am



for (int I = 0; 1 < 6; I++)

Was the 1 instead of I a copy paste error or is that what you have in code? If so, try your code with I instead of 1 < 6.

Tbjbu1 · December 31, 2016, 8:42am

3>
It worked