/**
* Select the first available object.
* @param change_class If true, change the class if no object in the current
* class is available.
*/
void SelectFirstAvailableObject(bool change_class)
{
/* First try to select an object in the selected class. */
ObjectClass *sel_objclass = ObjectClass::Get(_selected_object_class);
for (uint i = 0; i < sel_objclass->GetSpecCount(); i++) {
const ObjectSpec *spec = sel_objclass->GetSpec(i);
if (spec->IsAvailable()) {
this->SelectOtherObject(i);
return;
}
}
if (change_class) {
/* If that fails, select the first available object
* from a random class. */
for (ObjectClassID j = OBJECT_CLASS_BEGIN; j < OBJECT_CLASS_MAX; j++) {
ObjectClass *objclass = ObjectClass::Get(j);
for (uint i = 0; i < objclass->GetSpecCount(); i++) {
const ObjectSpec *spec = objclass->GetSpec(i);
if (spec->IsAvailable()) {
this->SelectOtherClass(j);
this->SelectOtherObject(i);
return;
}
}
}
}
/* If all objects are unavailable, select nothing... */
if (ObjectClass::Get(_selected_object_class)->GetUISpecCount() == 0) {
/* ... but make sure that the class is not empty. */
for (ObjectClassID j = OBJECT_CLASS_BEGIN; j < OBJECT_CLASS_MAX; j++) {
if (ObjectClass::Get(j)->GetUISpecCount() > 0) {
this->SelectOtherClass(j);
break;
}
}
}
this->SelectOtherObject(-1);
}
