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