Added streaming system

src/modules/stream/stream.h

@@ -0,0 +1,80 @@
+#ifndef STREAM_H_
+#define STREAM_H_
+#include <vector>
+#include <unordered_map>
+#include <tuple>
+#include <algorithm>
+#include <scene/3d/spatial.h>
+#include <scene/3d/visual_instance.h>
+class VoxelViewer;
+class VoxelLodTerrain;
+class StreamWorld : public Spatial {
+	GDCLASS(StreamWorld, Spatial)
+private:
+	VoxelViewer *viewer;
+	VoxelLodTerrain *terrain;
+	Node *current_scene;
+	struct building {
+		String id;
+		Transform xform;
+		AABB aabb;
+	};
+	struct scene_data {
+		Ref<PackedScene> packed_scene;
+		String path;
+		Ref<ResourceInteractiveLoader> loader;
+		std::vector<int> buildings;
+	};
+	HashMap<String, struct scene_data> scenes;
+	HashMap<int, Node *> item_nodes;
+	using tile_key_t = std::tuple<int, int>;
+	struct tile_hash : public std::unary_function<key_t, std::size_t> {
+		std::size_t operator()(const tile_key_t &k) const
+		{
+			return std::get<0>(k) ^ std::get<1>(k);
+		}
+	};
+	using tile_map_t = std::unordered_map<const tile_key_t,
+					      std::vector<int>, tile_hash>;
+	HashMap<String, String> building_data;
+	std::vector<struct building> buildings;
+	Vector3 eye;
+	tile_map_t tiles;
+	tile_map_t loaded_tiles;
+	int world_extent;
+	int tile_size;
+	int view_distance;
+	bool initialized;
+	int current_x, current_z;
+	void _notification(int which);
+	void read_buildings_json(const String &buildings_path);
+	void create_tilemap();
+	void update_view();
+	void viewer_dead();
+	void terrain_dead();
+	void load_tile(int tx, int ty);
+	void erase_tile(int tx, int ty);
+	void load_building(int id);
+	void unload_building(int id);
+	void request_item(int type, int item);
+	void update_items();
+	static void _bind_methods();
+
+public:
+	StreamWorld();
+};
+class RoadDebug : public VisualInstance {
+	GDCLASS(RoadDebug, VisualInstance)
+protected:
+	RID imm;
+	Ref<SpatialMaterial> material;
+	void _notification(int which);
+	AABB aabb;
+
+public:
+	RoadDebug();
+	~RoadDebug();
+	virtual AABB get_aabb() const;
+	virtual PoolVector<Face3> get_faces(uint32_t p_usage_flags) const;
+};
+#endif