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Add ObjectRef:get_children() (#10480)

Co-authored-by: Zughy <4279489-marco_a@users.noreply.gitlab.com>
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Zughy and Zughy committed Oct 13, 2020
1 parent 521a042 commit 2341a4aff1242e978d6fad3772d4d4fb015c040d
Showing with 27 additions and 0 deletions.
  1. +2 −0 doc/lua_api.txt
  2. +22 −0 src/script/lua_api/l_object.cpp
  3. +3 −0 src/script/lua_api/l_object.h
@@ -6206,6 +6206,8 @@ object you are working with still exists.
should appear in first person.
* `get_attach()`: returns parent, bone, position, rotation, forced_visible,
or nil if it isn't attached.
* `get_children()`: returns a list of ObjectRefs that are attached to the
object.
* `set_detach()`
* `set_bone_position(bone, position, rotation)`
* `bone`: string
@@ -738,6 +738,27 @@ int ObjectRef::l_get_attach(lua_State *L)
return 5;
}

// get_children(self)
int ObjectRef::l_get_children(lua_State *L)
{
GET_ENV_PTR;

ObjectRef *ref = checkobject(L, 1);
ServerActiveObject *sao = getobject(ref);
if (sao == nullptr)
return 0;

const std::unordered_set<int> child_ids = sao->getAttachmentChildIds();
int i = 0;
lua_createtable(L, child_ids.size(), 0);
for (const int id : child_ids) {
ServerActiveObject *child = env->getActiveObject(id);
getScriptApiBase(L)->objectrefGetOrCreate(L, child);
lua_rawseti(L, -2, ++i);
}
return 1;
}

// set_detach(self)
int ObjectRef::l_set_detach(lua_State *L)
{
@@ -2337,6 +2358,7 @@ luaL_Reg ObjectRef::methods[] = {
luamethod(ObjectRef, get_bone_position),
luamethod(ObjectRef, set_attach),
luamethod(ObjectRef, get_attach),
luamethod(ObjectRef, get_children),
luamethod(ObjectRef, set_detach),
luamethod(ObjectRef, set_properties),
luamethod(ObjectRef, get_properties),
@@ -143,6 +143,9 @@ class ObjectRef : public ModApiBase {
// get_attach(self)
static int l_get_attach(lua_State *L);

// get_children(self)
static int l_get_children(lua_State *L);

// set_detach(self)
static int l_set_detach(lua_State *L);

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