Initial commit

modules/world/density_map.h

@@ -0,0 +1,56 @@
+#ifndef DENSITY_MAP_H
+#define DENSITY_MAP_H
+#include <core/resource.h>
+#include <core/math/random_number_generator.h>
+#include <modules/voxel/util/math/vector3i.h>
+
+class DensityMap: public Resource {
+	GDCLASS(DensityMap, Resource);
+public:
+	DensityMap();
+	~DensityMap();
+protected:
+	Ref<RandomNumberGenerator> rnd;
+	struct area {
+		Vector2i pos;
+		float radius;
+		struct area *parent;
+		inline bool has_point(const Vector2i &pt)
+		{
+			int tox = pos.x - pt.x;
+			int toy = pos.y - pt.y;
+			int tdst = tox * tox + toy * toy;
+			int rsq = (int)(radius * radius);
+			return tdst < rsq;
+		}
+	};
+	List<struct area> clusters;
+	List<struct area> regions;
+	List<struct area> counties;
+	List<struct area> cities;
+	List<struct area> districts;
+	int num_clusters;
+	int num_regions;
+	int num_counties;
+	int num_cities;
+	int num_districts;
+	HashMap<Vector2i, Vector<struct area> > circle_grid;
+	void split_area(struct area *area, int num_split, List<struct area> &list);
+	void populate_grid(List<struct area> &list);
+
+	void set_num_clusters(int num);
+	int get_num_clusters() const;
+	/* 100m grid */
+	int grid_size;
+	uint32_t world_x_size;
+	uint32_t world_y_size;
+	uint32_t world_z_size;
+	Vector3i world_center;
+	int seed;
+	bool _set(const StringName &p_name, const Variant &p_value);
+	bool _get(const StringName &p_name, Variant &r_ret) const;
+	void _get_property_list(List<PropertyInfo> *p_list) const;
+public:
+	void update_clusters();
+};
+#endif