refactor: header file for every module

include/pathfinding.h

@@ -0,0 +1,21 @@
+#ifndef PATHFINDING_H
+#define PATHFINDING_H
+
+#include <raylib.h>
+#include <stdbool.h>
+
+#include "terrain.h"
+
+#define PATH_MAX_WAYPOINTS 16
+
+typedef struct {
+  Vector2 waypoints[PATH_MAX_WAYPOINTS];
+  int count;
+} Path;
+
+bool IsWaterWithClearance(Terrain *terrain, Vector2 pos, float clearance);
+Vector2 GetRandomWaterPositionNear(Terrain *terrain, Vector2 origin, float maxRadius,
+                                   float clearance);
+Path FindWaterPath(Terrain *terrain, Vector2 start, Vector2 goal, float clearance);
+
+#endif