ClientActiveObject * ClientEnvironment::getSelectedActiveObject(
const core::line3d<f32> &shootline_on_map, v3f *intersection_point,
v3s16 *intersection_normal)
{
std::vector<DistanceSortedActiveObject> objects;
getActiveObjects(shootline_on_map.start,
shootline_on_map.getLength() + 3, objects);
const v3f line_vector = shootline_on_map.getVector();
// Sort them.
// After this, the closest object is the first in the array.
std::sort(objects.begin(), objects.end());
/* Because objects can have different nodebox sizes,
* the object whose center is the nearest isn't necessarily
* the closest one. If an object is found, don't stop
* immediately. */
f32 d_min = shootline_on_map.getLength();
ClientActiveObject *nearest_obj = NULL;
for (u32 i = 0; i < objects.size(); i++) {
ClientActiveObject *obj = objects[i].obj;
aabb3f *selection_box = obj->getSelectionBox();
if (selection_box == NULL)
continue;
v3f pos = obj->getPosition();
aabb3f offsetted_box(selection_box->MinEdge + pos,
selection_box->MaxEdge + pos);
if (offsetted_box.getCenter().getDistanceFrom(
shootline_on_map.start) > d_min + 9.6f*BS) {
// Probably there is no active object that has bigger nodebox than
// (-5.5,-5.5,-5.5,5.5,5.5,5.5)
// 9.6 > 5.5*sqrt(3)
break;
}
v3f current_intersection;
v3s16 current_normal;
if (boxLineCollision(offsetted_box, shootline_on_map.start, line_vector,
¤t_intersection, ¤t_normal)) {
f32 d_current = current_intersection.getDistanceFrom(
shootline_on_map.start);
if (d_current <= d_min) {
d_min = d_current;
nearest_obj = obj;
*intersection_point = current_intersection;
*intersection_normal = current_normal;
}
}
}
return nearest_obj;
}
ClientActiveObject * Client::getSelectedActiveObject(
f32 max_d,
v3f from_pos_f_on_map,
core::line3d<f32> shootline_on_map
)
{
core::array<DistanceSortedActiveObject> objects;
m_env.getActiveObjects(from_pos_f_on_map, max_d, objects);
//infostream<<"Collected "<<objects.size()<<" nearby objects"<<std::endl;
// Sort them.
// After this, the closest object is the first in the array.
objects.sort();
for(u32 i=0; i<objects.size(); i++)
{
ClientActiveObject *obj = objects[i].obj;
core::aabbox3d<f32> *selection_box = obj->getSelectionBox();
if(selection_box == NULL)
continue;
v3f pos = obj->getPosition();
core::aabbox3d<f32> offsetted_box(
selection_box->MinEdge + pos,
selection_box->MaxEdge + pos
);
if(offsetted_box.intersectsWithLine(shootline_on_map))
{
//infostream<<"Returning selected object"<<std::endl;
return obj;
}
}
//infostream<<"No object selected; returning NULL."<<std::endl;
return NULL;
}
ClientActiveObject * Client::getSelectedActiveObject(
f32 max_d,
v3f from_pos_f_on_map,
core::line3d<f32> shootline_on_map
)
{
std::vector<DistanceSortedActiveObject> objects;
m_env.getActiveObjects(from_pos_f_on_map, max_d, objects);
// Sort them.
// After this, the closest object is the first in the array.
std::sort(objects.begin(), objects.end());
for(unsigned int i=0; i<objects.size(); i++)
{
ClientActiveObject *obj = objects[i].obj;
core::aabbox3d<f32> *selection_box = obj->getSelectionBox();
if(selection_box == NULL)
continue;
v3f pos = obj->getPosition();
core::aabbox3d<f32> offsetted_box(
selection_box->MinEdge + pos,
selection_box->MaxEdge + pos
);
if(offsetted_box.intersectsWithLine(shootline_on_map))
{
return obj;
}
}
return NULL;
}