BlitzNext/Runtime/blitz3d/world.hpp

#pragma once
#include <list>
#include "camera.hpp"
#include "light.hpp"
#include "listener.hpp"
#include "mirror.hpp"
#include "model.hpp"

#define WORLD_COLLISION_TYPES 16
#define WORLD_COLLISION_HITS 4

class World {
	public:
	//collision methods
	enum { COLLISION_METHOD_SPHERE = 1, COLLISION_METHOD_POLYGON = 2, COLLISION_METHOD_BOX = 3 };

	//collision actions
	enum {
		COLLISION_RESPONSE_NONE    = 0,
		COLLISION_RESPONSE_STOP    = 1,
		COLLISION_RESPONSE_SLIDE   = 2,
		COLLISION_RESPONSE_SLIDEXZ = 3,
	};

	void clearCollisions();
	void addCollision(int src_type, int dest_type, int method, int response);

	void update(float elapsed);
	void capture();
	void render(float tween);

	bool    CheckLineOfSight(Object* src, Object* dest);
	bool    hitTest(const Line& line, float radius, Object* obj, const Transform& tf, int method, Collision* curr_coll);
	Object* traceRay(const Line& line, float radius, ObjCollision* curr_coll);

	private:
	struct CollInfo {
		int dst_type, method, response;
	};

	std::vector<CollInfo>   _collInfo[WORLD_COLLISION_TYPES];
	std::list<Object*> _objsByType[WORLD_COLLISION_TYPES];
	std::list<Object*> _objsByTypeSwappable[WORLD_COLLISION_TYPES];

	void collide(Object* src);
	void render(Camera* c, Mirror* m);
	void render(Model* m, const RenderContext& rc);
	void flushTransparent();
};