/*************************************************************************/
/*  collision_object_2d_sw.h                                             */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
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/*************************************************************************/
#ifndef COLLISION_OBJECT_2D_SW_H
#define COLLISION_OBJECT_2D_SW_H

#include "broad_phase_2d_sw.h"
#include "self_list.h"
#include "servers/physics_2d_server.h"
#include "shape_2d_sw.h"

class Space2DSW;

class CollisionObject2DSW : public ShapeOwner2DSW {
public:
	enum Type {
		TYPE_AREA,
		TYPE_BODY
	};

private:
	Type type;
	RID self;
	ObjectID instance_id;
	bool pickable;

	struct Shape {

		Matrix32 xform;
		Matrix32 xform_inv;
		BroadPhase2DSW::ID bpid;
		Rect2 aabb_cache; //for rayqueries
		Shape2DSW *shape;
		Variant metadata;
		bool trigger;
		Shape() { trigger = false; }
	};

	Vector<Shape> shapes;
	Space2DSW *space;
	Matrix32 transform;
	Matrix32 inv_transform;
	uint32_t collision_mask;
	uint32_t layer_mask;
	bool _static;

	void _update_shapes();

protected:
	void _update_shapes_with_motion(const Vector2 &p_motion);
	void _unregister_shapes();

	_FORCE_INLINE_ void _set_transform(const Matrix32 &p_transform, bool p_update_shapes = true) {
		transform = p_transform;
		if (p_update_shapes) {
			_update_shapes();
		}
	}
	_FORCE_INLINE_ void _set_inv_transform(const Matrix32 &p_transform) { inv_transform = p_transform; }
	void _set_static(bool p_static);

	virtual void _shapes_changed() = 0;
	void _set_space(Space2DSW *space);

	CollisionObject2DSW(Type p_type);

public:
	_FORCE_INLINE_ void set_self(const RID &p_self) { self = p_self; }
	_FORCE_INLINE_ RID get_self() const { return self; }

	_FORCE_INLINE_ void set_instance_id(const ObjectID &p_instance_id) { instance_id = p_instance_id; }
	_FORCE_INLINE_ ObjectID get_instance_id() const { return instance_id; }

	void _shape_changed();

	_FORCE_INLINE_ Type get_type() const { return type; }
	void add_shape(Shape2DSW *p_shape, const Matrix32 &p_transform = Matrix32());
	void set_shape(int p_index, Shape2DSW *p_shape);
	void set_shape_transform(int p_index, const Matrix32 &p_transform);
	void set_shape_metadata(int p_index, const Variant &p_metadata);

	_FORCE_INLINE_ int get_shape_count() const { return shapes.size(); }
	_FORCE_INLINE_ Shape2DSW *get_shape(int p_index) const { return shapes[p_index].shape; }
	_FORCE_INLINE_ const Matrix32 &get_shape_transform(int p_index) const { return shapes[p_index].xform; }
	_FORCE_INLINE_ const Matrix32 &get_shape_inv_transform(int p_index) const { return shapes[p_index].xform_inv; }
	_FORCE_INLINE_ const Rect2 &get_shape_aabb(int p_index) const { return shapes[p_index].aabb_cache; }
	_FORCE_INLINE_ const Variant &get_shape_metadata(int p_index) const { return shapes[p_index].metadata; }

	_FORCE_INLINE_ Matrix32 get_transform() const { return transform; }
	_FORCE_INLINE_ Matrix32 get_inv_transform() const { return inv_transform; }
	_FORCE_INLINE_ Space2DSW *get_space() const { return space; }

	_FORCE_INLINE_ void set_shape_as_trigger(int p_idx, bool p_enable) { shapes[p_idx].trigger = p_enable; }
	_FORCE_INLINE_ bool is_shape_set_as_trigger(int p_idx) const { return shapes[p_idx].trigger; }

	void set_collision_mask(uint32_t p_mask) { collision_mask = p_mask; }
	_FORCE_INLINE_ uint32_t get_collision_mask() const { return collision_mask; }

	void set_layer_mask(uint32_t p_mask) { layer_mask = p_mask; }
	_FORCE_INLINE_ uint32_t get_layer_mask() const { return layer_mask; }

	void remove_shape(Shape2DSW *p_shape);
	void remove_shape(int p_index);

	virtual void set_space(Space2DSW *p_space) = 0;

	_FORCE_INLINE_ bool is_static() const { return _static; }

	void set_pickable(bool p_pickable) { pickable = p_pickable; }
	_FORCE_INLINE_ bool is_pickable() const { return pickable; }

	_FORCE_INLINE_ bool test_collision_mask(CollisionObject2DSW *p_other) const {

		return layer_mask & p_other->collision_mask || p_other->layer_mask & collision_mask;
	}

	virtual ~CollisionObject2DSW() {}
};

#endif // COLLISION_OBJECT_2D_SW_H