blender/source/gameengine/GameLogic/SCA_PropertyActuator.cpp

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/**
* Assign, change, copy properties
*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
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*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
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*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
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*/
#include "SCA_PropertyActuator.h"
#include "InputParser.h"
#include "Operator2Expr.h"
#include "ConstExpr.h"
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
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/* ------------------------------------------------------------------------- */
/* Native functions */
/* ------------------------------------------------------------------------- */
SCA_PropertyActuator::SCA_PropertyActuator(SCA_IObject* gameobj,SCA_IObject* sourceObj,const STR_String& propname,const STR_String& expr,int acttype,PyTypeObject* T )
: SCA_IActuator(gameobj,T),
m_type(acttype),
m_propname(propname),
m_exprtxt(expr),
m_sourceObj(sourceObj)
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{
// protect ourselves against someone else deleting the source object
// don't protect against ourselves: it would create a dead lock
if (m_sourceObj)
m_sourceObj->RegisterActuator(this);
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}
SCA_PropertyActuator::~SCA_PropertyActuator()
{
if (m_sourceObj)
m_sourceObj->UnregisterActuator(this);
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}
bool SCA_PropertyActuator::Update()
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{
bool result = false;
bool bNegativeEvent = IsNegativeEvent();
RemoveAllEvents();
if (bNegativeEvent)
return false; // do nothing on negative events
CValue* propowner = GetParent();
CParser parser;
parser.SetContext( propowner->AddRef());
CExpression* userexpr = parser.ProcessText(m_exprtxt);
if (userexpr)
{
switch (m_type)
{
case KX_ACT_PROP_ASSIGN:
{
CValue* newval = userexpr->Calculate();
CValue* oldprop = propowner->GetProperty(m_propname);
if (oldprop)
{
oldprop->SetValue(newval);
} else
{
propowner->SetProperty(m_propname,newval);
}
newval->Release();
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break;
}
case KX_ACT_PROP_ADD:
{
CValue* oldprop = propowner->GetProperty(m_propname);
if (oldprop)
{
// int waarde = (int)oldprop->GetNumber(); /*unused*/
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CExpression* expr = new COperator2Expr(VALUE_ADD_OPERATOR,new CConstExpr(oldprop->AddRef()),
userexpr->AddRef());
CValue* newprop = expr->Calculate();
oldprop->SetValue(newprop);
newprop->Release();
expr->Release();
}
break;
}
case KX_ACT_PROP_COPY:
{
if (m_sourceObj)
{
CValue* copyprop = m_sourceObj->GetProperty(m_exprtxt);
if (copyprop)
{
CValue *val = copyprop->GetReplica();
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GetParent()->SetProperty(
m_propname,
val);
val->Release();
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}
}
break;
}
default:
{
}
}
userexpr->Release();
}
return result;
}
bool
SCA_PropertyActuator::
isValid(
SCA_PropertyActuator::KX_ACT_PROP_MODE mode
){
bool res = false;
res = ((mode > KX_ACT_PROP_NODEF) && (mode < KX_ACT_PROP_MAX));
return res;
}
CValue*
SCA_PropertyActuator::
GetReplica() {
SCA_PropertyActuator* replica = new SCA_PropertyActuator(*this);
replica->ProcessReplica();
// this will copy properties and so on...
CValue::AddDataToReplica(replica);
return replica;
};
void SCA_PropertyActuator::ProcessReplica()
{
// no need to check for self reference like in the constructor:
// the replica will always have a different parent
if (m_sourceObj)
m_sourceObj->RegisterActuator(this);
SCA_IActuator::ProcessReplica();
}
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bool SCA_PropertyActuator::UnlinkObject(SCA_IObject* clientobj)
{
if (clientobj == m_sourceObj)
{
// this object is being deleted, we cannot continue to track it.
m_sourceObj = NULL;
return true;
}
return false;
}
void SCA_PropertyActuator::Relink(GEN_Map<GEN_HashedPtr, void*> *obj_map)
{
void **h_obj = (*obj_map)[m_sourceObj];
if (h_obj) {
if (m_sourceObj)
m_sourceObj->UnregisterActuator(this);
m_sourceObj = (SCA_IObject*)(*h_obj);
m_sourceObj->RegisterActuator(this);
}
}
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/* ------------------------------------------------------------------------- */
/* Python functions */
/* ------------------------------------------------------------------------- */
/* Integration hooks ------------------------------------------------------- */
PyTypeObject SCA_PropertyActuator::Type = {
PyObject_HEAD_INIT(&PyType_Type)
0,
"SCA_PropertyActuator",
sizeof(SCA_PropertyActuator),
0,
PyDestructor,
0,
__getattr,
__setattr,
0, //&MyPyCompare,
__repr,
0, //&cvalue_as_number,
0,
0,
0,
0
};
PyParentObject SCA_PropertyActuator::Parents[] = {
&SCA_PropertyActuator::Type,
&SCA_IActuator::Type,
&SCA_ILogicBrick::Type,
&CValue::Type,
NULL
};
PyMethodDef SCA_PropertyActuator::Methods[] = {
{"setProperty", (PyCFunction) SCA_PropertyActuator::sPySetProperty, METH_VARARGS, SetProperty_doc},
{"getProperty", (PyCFunction) SCA_PropertyActuator::sPyGetProperty, METH_VARARGS, GetProperty_doc},
{"setValue", (PyCFunction) SCA_PropertyActuator::sPySetValue, METH_VARARGS, SetValue_doc},
{"getValue", (PyCFunction) SCA_PropertyActuator::sPyGetValue, METH_VARARGS, GetValue_doc},
{NULL,NULL} //Sentinel
};
PyObject* SCA_PropertyActuator::_getattr(const STR_String& attr) {
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_getattr_up(SCA_IActuator);
}
/* 1. setProperty */
char SCA_PropertyActuator::SetProperty_doc[] =
"setProperty(name)\n"
"\t- name: string\n"
"\tSet the property on which to operate. If there is no property\n"
"\tof this name, the call is ignored.\n";
PyObject* SCA_PropertyActuator::PySetProperty(PyObject* self, PyObject* args, PyObject* kwds)
{
/* Check whether the name exists first ! */
char *nameArg;
if (!PyArg_ParseTuple(args, "s", &nameArg)) {
return NULL;
}
CValue* prop = GetParent()->FindIdentifier(nameArg);
if (!prop->IsError()) {
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m_propname = nameArg;
} else {
; /* not found ... */
}
prop->Release();
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Py_Return;
}
/* 2. getProperty */
char SCA_PropertyActuator::GetProperty_doc[] =
"getProperty(name)\n"
"\tReturn the property on which the actuator operates.\n";
PyObject* SCA_PropertyActuator::PyGetProperty(PyObject* self, PyObject* args, PyObject* kwds)
{
return PyString_FromString(m_propname);
}
/* 3. setValue */
char SCA_PropertyActuator::SetValue_doc[] =
"setValue(value)\n"
"\t- value: string\n"
"\tSet the value with which the actuator operates. If the value\n"
"\tis not compatible with the type of the property, the subsequent\n"
"\t action is ignored.\n";
PyObject* SCA_PropertyActuator::PySetValue(PyObject* self, PyObject* args, PyObject* kwds)
{
char *valArg;
if(!PyArg_ParseTuple(args, "s", &valArg)) {
return NULL;
}
if (valArg) m_exprtxt = valArg;
Py_Return;
}
/* 4. getValue */
char SCA_PropertyActuator::GetValue_doc[] =
"getValue()\n"
"\tReturns the value with which the actuator operates.\n";
PyObject* SCA_PropertyActuator::PyGetValue(PyObject* self, PyObject* args, PyObject* kwds)
{
return PyString_FromString(m_exprtxt);
}
/* eof */