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-rw-r--r--source/cSandSimulator.cpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/source/cSandSimulator.cpp b/source/cSandSimulator.cpp
index b25b498c5..77f206b52 100644
--- a/source/cSandSimulator.cpp
+++ b/source/cSandSimulator.cpp
@@ -51,6 +51,9 @@ bool cSandSimulator::IsAllowedBlock( char a_BlockID )
void cSandSimulator::AddBlock(int a_X, int a_Y, int a_Z)
{
+ if(!IsAllowedBlock(m_World->GetBlock(a_X, a_Y, a_Z))) //This should save very much time because it doesn´t have to iterate through all blocks
+ return;
+
Vector3i *Block = new Vector3i(a_X, a_Y, a_Z);
//check for duplicates