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-rw-r--r--src/train.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/train.cpp b/src/train.cpp
index 080a357..43ebe8a 100644
--- a/src/train.cpp
+++ b/src/train.cpp
@@ -1,5 +1,7 @@
#include "train.h"
+#include <cmath>
+
#include "bitmap.h"
#include "level.h"