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BGE - new read-only attribute in KX_GameObject python api (LOD level) 

Added a new "current_lod_level" property to the python api of
KX_GameObject. The property returns the current lod level of the game
object. The purpose of the property is activate logic routines only when
an object is at a certain lod-distance from the camera, avoiding to
separately recomputing the same distance in the logic script. Usage in
python script might look like:

owner = bge.logic.getCurrentController().owner
lod_level = owner.currentLodLevel
if lod_level == 0: ...do something
else: ... object might be too distant

Reviewers: dfelinto, kupoman, moguri

Reviewed By: kupoman, moguri

Subscribers: lordloki

Projects: #game_engine

Differential Revision: https://developer.blender.org/D978
This commit is contained in:
Pierluigi Grassi 2015-03-15 17:26:11 +01:00 committed by Jorge Bernal
parent dd3ade250d
commit 225027ce5d
3 changed files with 10 additions and 1 deletions
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6
doc/python_api/rst/bge_types/bge.types.KX_GameObject.rst
View File

@ -432,6 +432,12 @@ base class --- :class:`SCA_IObject`
If true, the object's and children's debug properties will be displayed on screen.
:type: boolean
.. attribute:: currentLodLevel
The index of the level of detail (LOD) currently used by this object (read-only).
:type: int
.. method:: endObject()

4
source/gameengine/Ketsji/KX_GameObject.cpp
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@ -91,6 +91,7 @@ KX_GameObject::KX_GameObject(
: SCA_IObject(),
m_bDyna(false),
m_layer(0),
m_currentLodLevel(0),
m_pBlenderObject(NULL),
m_pBlenderGroupObject(NULL),
m_bSuspendDynamics(false),
@ -794,7 +795,7 @@ void KX_GameObject::UpdateLod(MT_Vector3 &cam_pos)
}
RAS_MeshObject *mesh = this->m_lodmeshes[level];
this->m_currentLodLevel = level;
if (mesh != this->m_meshes[0]) {
this->GetScene()->ReplaceMesh(this, mesh, true, false);
}
@ -1927,6 +1928,7 @@ PyMethodDef KX_GameObject::Methods[] = {
};
PyAttributeDef KX_GameObject::Attributes[] = {
KX_PYATTRIBUTE_INT_RO("currentLodLevel", KX_GameObject, m_currentLodLevel),
KX_PYATTRIBUTE_RO_FUNCTION("name", KX_GameObject, pyattr_get_name),
KX_PYATTRIBUTE_RO_FUNCTION("parent", KX_GameObject, pyattr_get_parent),
KX_PYATTRIBUTE_RO_FUNCTION("groupMembers", KX_GameObject, pyattr_get_group_members),

1
source/gameengine/Ketsji/KX_GameObject.h
View File

@ -88,6 +88,7 @@ protected:
int m_layer;
std::vector<RAS_MeshObject*> m_meshes;
std::vector<RAS_MeshObject*> m_lodmeshes;
int m_currentLodLevel;
SG_QList m_meshSlots; // head of mesh slots of this
struct Object* m_pBlenderObject;
struct Object* m_pBlenderGroupObject;