bge py api: raise an overflow exception when assigning a float to a bge object which is out of the float range.

also avoid raising exceptions by ConvertPythonToValue when they will be ignored.

source/gameengine/Ketsji/KX_GameObject.cpp

@@ -1858,15 +1858,14 @@ static int Map_SetItem(PyObject *self_v, PyObject *key, PyObject *val)
 		}
 	}
 	else { /* ob["key"] = value */
-		int set= 0;
+		bool set = false;
 		
 		/* as CValue */
 		if (attr_str && PyObject_TypeCheck(val, &PyObjectPlus::Type)==0) /* don't allow GameObjects for eg to be assigned to CValue props */
 		{
-			CValue* vallie = self->ConvertPythonToValue(val, ""); /* error unused */
+			CValue *vallie = self->ConvertPythonToValue(val, false, "gameOb[key] = value: ");
 			
-			if (vallie)
-			{
+			if (vallie) {
 				CValue* oldprop = self->GetProperty(attr_str);
 				
 				if (oldprop)
@@ -1875,7 +1874,7 @@ static int Map_SetItem(PyObject *self_v, PyObject *key, PyObject *val)
 					self->SetProperty(attr_str, vallie);
 				
 				vallie->Release();
-				set= 1;
+				set = true;
 				
 				/* try remove dict value to avoid double ups */
 				if (self->m_attr_dict) {
@@ -1883,13 +1882,12 @@ static int Map_SetItem(PyObject *self_v, PyObject *key, PyObject *val)
 						PyErr_Clear();
 				}
 			}
-			else {
-				PyErr_Clear();
+			else if (PyErr_Occurred()) {
+				return -1;
 			}
 		}
 		
-		if (set==0)
-		{
+		if (set == false) {
 			if (self->m_attr_dict==NULL) /* lazy init */
 				self->m_attr_dict= PyDict_New();
 			
@@ -1898,7 +1896,7 @@ static int Map_SetItem(PyObject *self_v, PyObject *key, PyObject *val)
 			{
 				if (attr_str)
 					self->RemoveProperty(attr_str); /* overwrite the CValue if it exists */
-				set= 1;
+				set = true;
 			}
 			else {
 				if (attr_str)	PyErr_Format(PyExc_KeyError, "gameOb[key] = value: KX_GameObject, key \"%s\" not be added to internal dictionary", attr_str);
@@ -1906,8 +1904,9 @@ static int Map_SetItem(PyObject *self_v, PyObject *key, PyObject *val)
 			}
 		}
 		
-		if (set==0)
+		if (set == false) {
 			return -1; /* pythons error value */
+		}
 		
 	}