diff --git a/modules/wfc/direction.h b/modules/wfc/direction.h
deleted file mode 100644
index cf2366926..000000000
--- a/modules/wfc/direction.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef FAST_WFC_DIRECTION_HPP_
-#define FAST_WFC_DIRECTION_HPP_
-
-constexpr int directions_x[4] = { 0, -1, 1, 0 };
-constexpr int directions_y[4] = { -1, 0, 0, 1 };
-
-constexpr uint32_t get_opposite_direction(uint32_t direction) {
-	return 3 - direction;
-}
-
-#endif
diff --git a/modules/wfc/wave_form_collapse.h b/modules/wfc/wave_form_collapse.h
index 74ec55d49..d47a045cd 100644
--- a/modules/wfc/wave_form_collapse.h
+++ b/modules/wfc/wave_form_collapse.h
@@ -10,8 +10,6 @@
 
 #include "core/reference.h"
 
-#include "direction.h"
-
 class WaveFormCollapse : public Reference {
 	GDCLASS(WaveFormCollapse, Reference);
 
@@ -52,6 +50,9 @@ public:
 		}
 	};
 
+	static constexpr int directions_x[4] = { 0, -1, 1, 0 };
+	static constexpr int directions_y[4] = { -1, 0, 0, 1 };
+
 public:
 	bool get_eriodic_output() const;
 	void set_periodic_output(const bool val);
@@ -107,6 +108,10 @@ public:
 		propagating.push_back(PropagatingEntry(y, x, pattern));
 	}
 
+	constexpr uint32_t get_opposite_direction(uint32_t direction) {
+		return 3 - direction;
+	}
+
 	void normalize(Vector<double> &v);
 	Vector<double> get_plogp(const Vector<double> &distribution);
 	double get_min_abs_half(const Vector<double> &v);