cube.cpp

void ATestActor::CreateMesh() {
	Mesh->ClearAllMeshSections();

	int x = 0;
	int y = 0;
	int z = 0;

	FVector p0 = FVector(x * (BLOCK_RENDER_SIZE * 2) + BLOCK_RENDER_SIZE, y + BLOCK_RENDER_SIZE, z - BLOCK_RENDER_SIZE);
	FVector p1 = FVector(x * (BLOCK_RENDER_SIZE * 2) + BLOCK_RENDER_SIZE, y - BLOCK_RENDER_SIZE, z - BLOCK_RENDER_SIZE);
	FVector p2 = FVector(x * (BLOCK_RENDER_SIZE * 2) + BLOCK_RENDER_SIZE, y - BLOCK_RENDER_SIZE, z + BLOCK_RENDER_SIZE);
	FVector p3 = FVector(x * (BLOCK_RENDER_SIZE * 2) + BLOCK_RENDER_SIZE, y + BLOCK_RENDER_SIZE, z + BLOCK_RENDER_SIZE);
	FVector p4 = FVector(x * (BLOCK_RENDER_SIZE * 2) - BLOCK_RENDER_SIZE, y + BLOCK_RENDER_SIZE, z - BLOCK_RENDER_SIZE);
	FVector p5 = FVector(x * (BLOCK_RENDER_SIZE * 2) - BLOCK_RENDER_SIZE, y - BLOCK_RENDER_SIZE, z - BLOCK_RENDER_SIZE);
	FVector p6 = FVector(x * (BLOCK_RENDER_SIZE * 2) - BLOCK_RENDER_SIZE, y - BLOCK_RENDER_SIZE, z + BLOCK_RENDER_SIZE);
	FVector p7 = FVector(x * (BLOCK_RENDER_SIZE * 2) - BLOCK_RENDER_SIZE, y + BLOCK_RENDER_SIZE, z + BLOCK_RENDER_SIZE);

	// Normals
	FVector n0 = FVector(1.0f, 0.0f, 0.0f);		//Front
	FVector n1 = FVector(-1.0f, 0.0f, 0.0f);	//Back
	FVector n2 = FVector(0.0f, -1.0f, 0.0f);	//Left
	FVector n3 = FVector(0.0f, 1.0f, 0.0f);		//Right
	FVector n4 = FVector(0.0f, 0.0f, 1.0f);		//Top
	FVector n5 = FVector(0.0f, 0.0f, -1.0f);	//Bottom
	
	// UVs
	FVector2D u0 = FVector2D(0.f, 1.f);
	FVector2D u1 = FVector2D(1.f, 1.f);
	FVector2D u2 = FVector2D(1.f, 0.f);
	FVector2D u3 = FVector2D(0.f, 0.f);

	// Color
	FColor c0 = FColor::Magenta;

	// Tangents
	FProcMeshTangent t0 = FProcMeshTangent(0.0f, 1.0f, 0.0f);
	FProcMeshTangent t1 = FProcMeshTangent(0.0f, -1.0f, 0.0f);
	FProcMeshTangent t2 = FProcMeshTangent(1.0f, 0.0f, 0.0f);
	FProcMeshTangent t3 = FProcMeshTangent(-1.0f, 0.0f, 0.0f);
	FProcMeshTangent t4 = FProcMeshTangent(0.0f, 1.0f, 0.0f);
	FProcMeshTangent t5 = FProcMeshTangent(0.0f, -1.0f, 0.0f);

	TArray<int> m_Triangles = {
		0, 1, 2, 2, 3, 0,		// Front
		5, 4, 7, 7, 6, 5,		// Back
		1, 5, 6, 6, 2, 1,		// Left
		4, 0, 3, 3, 7, 4,		// Right
		6, 7, 3, 3, 2, 6,		// Top
		1, 0, 4, 4, 5, 1		// Bottom

	};

	TArray<FVector> m_Verticies = { p0, p1, p2, p3, p4, p5, p6, p7 };
	TArray<FVector> m_Normals = {
		n0, n0, n0, n0,
		n1, n1, n1, n1,
		n2, n2, n2, n2,
		n3, n3, n3, n3,
		n4, n4, n4, n4,
		n5, n5, n5, n5
	};
	
	TArray<FVector2D> m_UVs = {
		u0, u1, u2, u3,
		u0, u1, u2, u3,
		u0, u1, u2, u3,
		u0, u1, u2, u3,
		u0, u1, u2, u3,
		u0, u1, u2, u3
	};

	TArray<FColor> m_Colors = { c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0, c0 };
	TArray<FProcMeshTangent> m_Tangents = {
		t0, t0, t0, t0,
		t1, t1, t1, t1,
		t2, t2, t2, t2,
		t3, t3, t3, t3,
		t4, t4, t4, t4,
		t5, t5, t5, t5
	};
	
	if (Material) {
		Mesh->SetMaterial(0, Material);
	}
	
	Mesh->CreateMeshSection(0, m_Verticies, m_Triangles, m_Normals, m_UVs, m_Colors, m_Tangents, true);
}