[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [20426] trunk/blender/source/gameengine: BGE Py API

Campbell Barton ideasman42 at gmail.com
Tue May 26 18:15:40 CEST 2009


Revision: 20426
          http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=20426
Author:   campbellbarton
Date:     2009-05-26 18:15:40 +0200 (Tue, 26 May 2009)

Log Message:
-----------
BGE Py API
- Deprecation warnings for using attribute access

- Added dictionary functions to KX_GameObject and ListValue
    ob.get(key, default=None)
    ob.has_key(key)
 ob.has_key is important since there was no way to do something like hasattr(ob, "attr") which can be replaced by ob.has_key("attr") - (both still work of course).
 ob.get is just useful in many cases where you want a property if it exists but can fallback to a default.

- CListValue::FindValue was adding a reference but the ~3 places it was used were releasing the reference. added a FindValue that accepts a const char* type to avoid converting python strings to STR_String.

Modified Paths:
--------------
    trunk/blender/source/gameengine/Expressions/ListValue.cpp
    trunk/blender/source/gameengine/Expressions/ListValue.h
    trunk/blender/source/gameengine/Expressions/Value.cpp
    trunk/blender/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
    trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp
    trunk/blender/source/gameengine/Ketsji/KX_GameObject.h
    trunk/blender/source/gameengine/PyDoc/GameTypes.py

Modified: trunk/blender/source/gameengine/Expressions/ListValue.cpp
===================================================================
--- trunk/blender/source/gameengine/Expressions/ListValue.cpp	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/Expressions/ListValue.cpp	2009-05-26 16:15:40 UTC (rev 20426)
@@ -76,13 +76,9 @@
 	
 	if (PyString_Check(pyindex))
 	{
-		const char *index = PyString_AsString(pyindex);
-		CValue *item = ((CListValue*) list)->FindValue(index);
+		CValue *item = ((CListValue*) list)->FindValue(PyString_AsString(pyindex));
 		if (item)
-		{
-			item->Release(); /* FindValue() AddRef's */ 
 			return item->GetProxy();
-		}
 	}
 	else if (PyInt_Check(pyindex))
 	{
@@ -279,10 +275,17 @@
 
 
 PyMethodDef CListValue::Methods[] = {
+	/* List style access */
 	{"append", (PyCFunction)CListValue::sPyappend,METH_O},
 	{"reverse", (PyCFunction)CListValue::sPyreverse,METH_NOARGS},
 	{"index", (PyCFunction)CListValue::sPyindex,METH_O},
 	{"count", (PyCFunction)CListValue::sPycount,METH_O},
+	
+	/* Dict style access */
+	{"get", (PyCFunction)CListValue::sPyget,METH_VARARGS},
+	{"has_key", (PyCFunction)CListValue::sPyhas_key,METH_O},
+	
+	/* Own cvalue funcs */
 	{"from_id", (PyCFunction)CListValue::sPyfrom_id,METH_O},
 	
 	{NULL,NULL} //Sentinel
@@ -395,26 +398,24 @@
 
 
 
+CValue* CListValue::FindValue(const STR_String & name)
+{
+	for (int i=0; i < GetCount(); i++)
+		if (GetValue(i)->GetName() == name)
+			return GetValue(i);
+	
+	return NULL;
+}
+
 CValue* CListValue::FindValue(const char * name)
 {
-	CValue* resultval = NULL;
-	int i=0;
+	for (int i=0; i < GetCount(); i++)
+		if (GetValue(i)->GetName() == name)
+			return GetValue(i);
 	
-	while (!resultval && i < GetCount())
-	{
-		CValue* myval = GetValue(i);
-				
-		if (myval->GetName() == name)
-			resultval = GetValue(i)->AddRef(); // add referencecount
-		else
-			i++;
-		
-	}
-	return resultval;
+	return NULL;
 }
 
-
-
 bool CListValue::SearchValue(CValue *val)
 {
 	for (int i=0;i<GetCount();i++)
@@ -564,8 +565,32 @@
 	return PyInt_FromLong(numfound);
 }
 
+/* Matches python dict.get(key, [default]) */
+PyObject* CListValue::Pyget(PyObject *args)
+{
+	char *key;
+	PyObject* def = Py_None;
 
+	if (!PyArg_ParseTuple(args, "s|O:get", &key, &def))
+		return NULL;
+	
+	CValue *item = FindValue((const char *)key);
+	if (item)
+		return item->GetProxy();
+	
+	Py_INCREF(def);
+	return def;
+}
 
+/* Matches python dict.has_key() */
+PyObject* CListValue::Pyhas_key(PyObject* value)
+{
+	if (PyString_Check(value) && FindValue((const char *)PyString_AsString(value)))
+		Py_RETURN_TRUE;
+	
+	Py_RETURN_FALSE;
+}
+
 PyObject* CListValue::Pyfrom_id(PyObject* value)
 {
 	uintptr_t id= (uintptr_t)PyLong_AsVoidPtr(value);

Modified: trunk/blender/source/gameengine/Expressions/ListValue.h
===================================================================
--- trunk/blender/source/gameengine/Expressions/ListValue.h	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/Expressions/ListValue.h	2009-05-26 16:15:40 UTC (rev 20426)
@@ -45,6 +45,7 @@
 	void SetReleaseOnDestruct(bool bReleaseContents);
 	bool SearchValue(CValue* val);
 	
+	CValue* FindValue(const STR_String & name);
 	CValue* FindValue(const char *name);
 
 	void ReleaseAndRemoveAll();
@@ -74,6 +75,8 @@
 	KX_PYMETHOD_NOARGS(CListValue,reverse);
 	KX_PYMETHOD_O(CListValue,index);
 	KX_PYMETHOD_O(CListValue,count);
+	KX_PYMETHOD_VARARGS(CListValue,get);
+	KX_PYMETHOD_O(CListValue,has_key);
 	KX_PYMETHOD_O(CListValue,from_id);
 
 	

Modified: trunk/blender/source/gameengine/Expressions/Value.cpp
===================================================================
--- trunk/blender/source/gameengine/Expressions/Value.cpp	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/Expressions/Value.cpp	2009-05-26 16:15:40 UTC (rev 20426)
@@ -556,6 +556,8 @@
 
 PyObject*	CValue::py_getattro(PyObject *attr)
 {
+	ShowDeprecationWarning("val = ob.attr", "val = ob['attr']");
+	
 	char *attr_str= PyString_AsString(attr);
 	CValue* resultattr = GetProperty(attr_str);
 	if (resultattr)
@@ -655,6 +657,8 @@
 
 int	CValue::py_delattro(PyObject *attr)
 {
+	ShowDeprecationWarning("del ob.attr", "del ob['attr']");
+	
 	char *attr_str= PyString_AsString(attr);
 	if (RemoveProperty(attr_str))
 		return 0;
@@ -665,6 +669,8 @@
 
 int	CValue::py_setattro(PyObject *attr, PyObject* pyobj)
 {
+	ShowDeprecationWarning("ob.attr = val", "ob['attr'] = val");
+	
 	char *attr_str= PyString_AsString(attr);
 	CValue* oldprop = GetProperty(attr_str);	
 	CValue* vallie;

Modified: trunk/blender/source/gameengine/Ketsji/KX_BlenderMaterial.cpp
===================================================================
--- trunk/blender/source/gameengine/Ketsji/KX_BlenderMaterial.cpp	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/Ketsji/KX_BlenderMaterial.cpp	2009-05-26 16:15:40 UTC (rev 20426)
@@ -714,7 +714,6 @@
 		mScene->GetObjectList()->FindValue(mMaterial->mapping[i].objconame);
 
 	if(!obj) return;
-	obj->Release(); /* FindValue() AddRef's */
 
 	obj->Release();
 

Modified: trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp
===================================================================
--- trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/Ketsji/KX_GameObject.cpp	2009-05-26 16:15:40 UTC (rev 20426)
@@ -1190,7 +1190,11 @@
 	KX_PYMETHODTABLE_O(KX_GameObject, getDistanceTo),
 	KX_PYMETHODTABLE_O(KX_GameObject, getVectTo),
 	KX_PYMETHODTABLE(KX_GameObject, sendMessage),
-
+	
+	// dict style access for props
+	{"has_key",(PyCFunction) KX_GameObject::sPyhas_key, METH_O},
+	{"get",(PyCFunction) KX_GameObject::sPyget, METH_VARARGS},
+	
 	// deprecated
 	{"getPosition", (PyCFunction) KX_GameObject::sPyGetPosition, METH_NOARGS},
 	{"setPosition", (PyCFunction) KX_GameObject::sPySetPosition, METH_O},
@@ -1899,6 +1903,8 @@
 
 int	KX_GameObject::py_delattro(PyObject *attr)
 {
+	ShowDeprecationWarning("del ob.attr", "del ob['attr'] for user defined properties");
+	
 	char *attr_str= PyString_AsString(attr); 
 	
 	if (RemoveProperty(attr_str)) // XXX - should call CValues instead but its only 2 lines here
@@ -2737,6 +2743,48 @@
 	Py_RETURN_NONE;
 }
 
+/* dict style access */
+
+
+/* Matches python dict.get(key, [default]) */
+PyObject* KX_GameObject::Pyget(PyObject *args)
+{
+	PyObject *key;
+	PyObject* def = Py_None;
+	PyObject* ret;
+
+	if (!PyArg_ParseTuple(args, "O|O:get", &key, &def))
+		return NULL;
+	
+	
+	if(PyString_Check(key)) {
+		CValue *item = GetProperty(PyString_AsString(key));
+		if (item)
+			return item->GetProxy();
+	}
+	
+	if (m_attr_dict && (ret=PyDict_GetItem(m_attr_dict, key))) {
+		Py_INCREF(ret);
+		return ret;
+	}
+	
+	Py_INCREF(def);
+	return def;
+}
+
+/* Matches python dict.has_key() */
+PyObject* KX_GameObject::Pyhas_key(PyObject* value)
+{
+	if(PyString_Check(value) && GetProperty(PyString_AsString(value)))
+		Py_RETURN_TRUE;
+	
+	if (m_attr_dict && PyDict_GetItem(m_attr_dict, value))
+		Py_RETURN_TRUE;
+	
+	Py_RETURN_FALSE;
+}
+
+
 /* --------------------------------------------------------------------- 
  * Some stuff taken from the header
  * --------------------------------------------------------------------- */

Modified: trunk/blender/source/gameengine/Ketsji/KX_GameObject.h
===================================================================
--- trunk/blender/source/gameengine/Ketsji/KX_GameObject.h	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/Ketsji/KX_GameObject.h	2009-05-26 16:15:40 UTC (rev 20426)
@@ -872,6 +872,11 @@
 	KX_PYMETHOD_DOC_O(KX_GameObject,getDistanceTo);
 	KX_PYMETHOD_DOC_O(KX_GameObject,getVectTo);
 	KX_PYMETHOD_DOC_VARARGS(KX_GameObject, sendMessage);
+	
+	/* Dict access */
+	KX_PYMETHOD_VARARGS(KX_GameObject,get);
+	KX_PYMETHOD_O(KX_GameObject,has_key);
+	
 	/* attributes */
 	static PyObject*	pyattr_get_name(void* self_v, const KX_PYATTRIBUTE_DEF *attrdef);
 	static PyObject*	pyattr_get_parent(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef);

Modified: trunk/blender/source/gameengine/PyDoc/GameTypes.py
===================================================================
--- trunk/blender/source/gameengine/PyDoc/GameTypes.py	2009-05-26 15:01:06 UTC (rev 20425)
+++ trunk/blender/source/gameengine/PyDoc/GameTypes.py	2009-05-26 16:15:40 UTC (rev 20426)
@@ -1008,6 +1008,17 @@
 		"""
 		Reverse the order of the list.
 		"""
+	def get(key, default=None):
+		"""
+		Return the value matching key, or the default value if its not found.
+		@return: The key value or a default.
+		"""
+	def has_key(key):
+		"""
+		Return True if the key is found.
+		@rtype: boolean
+		@return: The key value or a default.
+		"""
 	def from_id(id):
 		"""
 		This is a funtion especially for the game engine to return a value with a spesific id.
@@ -1614,6 +1625,7 @@
 	@ivar childrenRecursive: all children of this object including childrens children, (read-only).
 	@type childrenRecursive: L{CListValue} of L{KX_GameObject}'s
 	@group Deprecated: getPosition, setPosition, setWorldPosition, getOrientation, setOrientation, getState, setState, getParent, getVisible, getMass, getMesh, getChildren, getChildrenRecursive
+	@group Property Access: get, has_key, attrDict, getPropertyNames
 	"""
 	def endObject():
 		"""
@@ -2056,7 +2068,19 @@
 		@param to: The name of the object to send the message to (optional)
 		@type to: string
 		"""
+	def get(key, default=None):
+		"""
+		Return the value matching key, or the default value if its not found.
+		@return: The key value or a default.
+		"""
+	def has_key(key):
+		"""
+		Return True if the key is found.
+		@rtype: boolean
+		@return: The key value or a default.
+		"""
 
+
 class KX_IpoActuator(SCA_IActuator):
 	"""
 	IPO actuator activates an animation.





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