godot/servers/physics_2d/area_2d_sw.cpp

/*************************************************************************/
/*  area_2d_sw.cpp                                                       */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
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#include "area_2d_sw.h"
#include "space_2d_sw.h"
#include "body_2d_sw.h"

Area2DSW::BodyKey::BodyKey(Body2DSW *p_body, uint32_t p_body_shape,uint32_t p_area_shape) { rid=p_body->get_self(); instance_id=p_body->get_instance_id(); body_shape=p_body_shape; area_shape=p_area_shape; }

void Area2DSW::_shapes_changed() {


}

void Area2DSW::set_transform(const Matrix32& p_transform) {

	if (!moved_list.in_list() && get_space())
		get_space()->area_add_to_moved_list(&moved_list);

	_set_transform(p_transform);
	_set_inv_transform(p_transform.affine_inverse());
}

void Area2DSW::set_space(Space2DSW *p_space) {

	if (get_space()) {
		if (monitor_query_list.in_list())
			get_space()->area_remove_from_monitor_query_list(&monitor_query_list);
		if (moved_list.in_list())
			get_space()->area_remove_from_moved_list(&moved_list);

	}

	monitored_bodies.clear();

	_set_space(p_space);
}


void Area2DSW::set_monitor_callback(ObjectID p_id, const StringName& p_method) {


	if (p_id==monitor_callback_id) {
		monitor_callback_method=p_method;
		return;
	}

	_unregister_shapes();

	monitor_callback_id=p_id;
	monitor_callback_method=p_method;

	monitored_bodies.clear();

	_shape_changed();

}



void Area2DSW::set_space_override_mode(Physics2DServer::AreaSpaceOverrideMode p_mode) {
	bool do_override=p_mode!=Physics2DServer::AREA_SPACE_OVERRIDE_DISABLED;
	if (do_override==(space_override_mode!=Physics2DServer::AREA_SPACE_OVERRIDE_DISABLED))
		return;
	_unregister_shapes();
	space_override_mode=p_mode;
	_shape_changed();
}

void Area2DSW::set_param(Physics2DServer::AreaParameter p_param, const Variant& p_value) {

	switch(p_param) {
		case Physics2DServer::AREA_PARAM_GRAVITY: gravity=p_value; ; break;
		case Physics2DServer::AREA_PARAM_GRAVITY_VECTOR: gravity_vector=p_value; ; break;
		case Physics2DServer::AREA_PARAM_GRAVITY_IS_POINT: gravity_is_point=p_value; ; break;
		case Physics2DServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION:  point_attenuation=p_value; ; break;
		case Physics2DServer::AREA_PARAM_DENSITY: density=p_value; ; break;
		case Physics2DServer::AREA_PARAM_PRIORITY: priority=p_value; ; break;
	}


}

Variant Area2DSW::get_param(Physics2DServer::AreaParameter p_param) const {


	switch(p_param) {
		case Physics2DServer::AREA_PARAM_GRAVITY: return gravity;
		case Physics2DServer::AREA_PARAM_GRAVITY_VECTOR: return gravity_vector;
		case Physics2DServer::AREA_PARAM_GRAVITY_IS_POINT: return gravity_is_point;
		case Physics2DServer::AREA_PARAM_GRAVITY_POINT_ATTENUATION: return  point_attenuation;
		case Physics2DServer::AREA_PARAM_DENSITY: return density;
		case Physics2DServer::AREA_PARAM_PRIORITY: return priority;
	}

	return Variant();
}


void Area2DSW::_queue_monitor_update() {

	ERR_FAIL_COND(!get_space());

	if (!monitor_query_list.in_list())
		get_space()->area_add_to_monitor_query_list(&monitor_query_list);


}

void Area2DSW::call_queries() {

	if (monitor_callback_id && !monitored_bodies.empty()) {

		Variant res[5];
		Variant *resptr[5];
		for(int i=0;i<5;i++)
			resptr[i]=&res[i];

		Object *obj = ObjectDB::get_instance(monitor_callback_id);
		if (!obj) {
			monitored_bodies.clear();
			monitor_callback_id=0;
			return;
		}



		for (Map<BodyKey,BodyState>::Element *E=monitored_bodies.front();E;E=E->next()) {

			if (E->get().state==0)
				continue; //nothing happened

			res[0]=E->get().state>0 ? Physics2DServer::AREA_BODY_ADDED : Physics2DServer::AREA_BODY_REMOVED;
			res[1]=E->key().rid;
			res[2]=E->key().instance_id;
			res[3]=E->key().body_shape;
			res[4]=E->key().area_shape;

			Variant::CallError ce;
			obj->call(monitor_callback_method,(const Variant**)resptr,5,ce);
		}
	}

	monitored_bodies.clear();

	//get_space()->area_remove_from_monitor_query_list(&monitor_query_list);

}

Area2DSW::Area2DSW() : CollisionObject2DSW(TYPE_AREA), monitor_query_list(this), moved_list(this)  {

	_set_static(true); //areas are never active
	space_override_mode=Physics2DServer::AREA_SPACE_OVERRIDE_DISABLED;
	gravity=9.80665;
	gravity_vector=Vector2(0,-1);
	gravity_is_point=false;
	point_attenuation=1;

	density=0.1;
	priority=0;
	monitor_callback_id=0;


}

Area2DSW::~Area2DSW() {


}