blender/source/gameengine/GameLogic/SCA_RandomSensor.cpp
Campbell Barton 5d64dd019e BGE Python API
Use each types dictionary to store attributes PyAttributeDef's so it uses pythons hash lookup (which it was already doing for methods) rather then doing a string lookup on the array each time.

This also means attributes can be found in the type without having to do a dir() on the instance.
2009-04-07 11:06:35 +00:00

235 lines
6.9 KiB
C++

/**
* Generate random pulses
*
* $Id$
*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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.
*
* 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 *****
*/
#include "SCA_RandomSensor.h"
#include "SCA_EventManager.h"
#include "SCA_RandomEventManager.h"
#include "SCA_LogicManager.h"
#include "ConstExpr.h"
#include <iostream>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
/* ------------------------------------------------------------------------- */
/* Native functions */
/* ------------------------------------------------------------------------- */
SCA_RandomSensor::SCA_RandomSensor(SCA_EventManager* eventmgr,
SCA_IObject* gameobj,
int startseed,
PyTypeObject* T)
: SCA_ISensor(gameobj,eventmgr, T)
{
// m_basegenerator is never deleted => memory leak
m_basegenerator = new SCA_RandomNumberGenerator(startseed);
Init();
}
SCA_RandomSensor::~SCA_RandomSensor()
{
/* Nothing to be done here. */
}
void SCA_RandomSensor::Init()
{
m_iteration = 0;
m_interval = 0;
m_lastdraw = false;
m_currentDraw = m_basegenerator->Draw();
}
CValue* SCA_RandomSensor::GetReplica()
{
CValue* replica = new SCA_RandomSensor(*this);
// replication copies m_basegenerator pointer => share same generator
// this will copy properties and so on...
CValue::AddDataToReplica(replica);
return replica;
}
bool SCA_RandomSensor::IsPositiveTrigger()
{
return (m_invert !=m_lastdraw);
}
bool SCA_RandomSensor::Evaluate(CValue* event)
{
/* Random generator is the generator from Line 25 of Table 1 in */
/* [KNUTH 1981, The Art of Computer Programming Vol. 2 */
/* (2nd Ed.), pp102] */
/* It's a very simple max. length sequence generator. We can */
/* draw 32 bool values before having to generate the next */
/* sequence value. There are some theorems that will tell you */
/* this is a reasonable way of generating bools. Check Knuth. */
/* Furthermore, we only draw each <delay>-eth frame. */
bool evaluateResult = false;
if (++m_interval > m_pulse_frequency) {
bool drawResult = false;
m_interval = 0;
if (m_iteration > 31) {
m_currentDraw = m_basegenerator->Draw();
drawResult = (m_currentDraw & 0x1) == 0;
m_iteration = 1;
} else {
drawResult = ((m_currentDraw >> m_iteration) & 0x1) == 0;
m_iteration++;
}
evaluateResult = drawResult != m_lastdraw;
m_lastdraw = drawResult;
}
/* now pass this result to some controller */
return evaluateResult;
}
/* ------------------------------------------------------------------------- */
/* Python functions */
/* ------------------------------------------------------------------------- */
/* Integration hooks ------------------------------------------------------- */
PyTypeObject SCA_RandomSensor::Type = {
PyObject_HEAD_INIT(NULL)
0,
"SCA_RandomSensor",
sizeof(SCA_RandomSensor),
0,
PyDestructor,
0,
0,
0,
0,
py_base_repr,
0,0,0,0,0,0,
py_base_getattro,
py_base_setattro,
0,0,0,0,0,0,0,0,0,
Methods
};
PyParentObject SCA_RandomSensor::Parents[] = {
&SCA_RandomSensor::Type,
&SCA_ISensor::Type,
&SCA_ILogicBrick::Type,
&CValue::Type,
NULL
};
PyMethodDef SCA_RandomSensor::Methods[] = {
{"setSeed", (PyCFunction) SCA_RandomSensor::sPySetSeed, METH_VARARGS, (PY_METHODCHAR)SetSeed_doc},
{"getSeed", (PyCFunction) SCA_RandomSensor::sPyGetSeed, METH_VARARGS, (PY_METHODCHAR)GetSeed_doc},
{"getLastDraw", (PyCFunction) SCA_RandomSensor::sPyGetLastDraw, METH_VARARGS, (PY_METHODCHAR)GetLastDraw_doc},
{NULL,NULL} //Sentinel
};
PyAttributeDef SCA_RandomSensor::Attributes[] = {
KX_PYATTRIBUTE_BOOL_RO("lastDraw",SCA_RandomSensor,m_lastdraw),
KX_PYATTRIBUTE_RW_FUNCTION("seed", SCA_RandomSensor, pyattr_get_seed, pyattr_set_seed),
{NULL} //Sentinel
};
PyObject* SCA_RandomSensor::py_getattro(PyObject *attr) {
py_getattro_up(SCA_ISensor);
}
int SCA_RandomSensor::py_setattro(PyObject *attr, PyObject *value)
{
py_setattro_up(SCA_ISensor);
}
/* 1. setSeed */
const char SCA_RandomSensor::SetSeed_doc[] =
"setSeed(seed)\n"
"\t- seed: integer\n"
"\tSet the initial seed of the generator. Equal seeds produce\n"
"\tequal series. If the seed is 0, the generator will produce\n"
"\tthe same value on every call.\n";
PyObject* SCA_RandomSensor::PySetSeed(PyObject* self, PyObject* args, PyObject* kwds) {
ShowDeprecationWarning("setSeed()", "the seed property");
long seedArg;
if(!PyArg_ParseTuple(args, "i", &seedArg)) {
return NULL;
}
m_basegenerator->SetSeed(seedArg);
Py_RETURN_NONE;
}
/* 2. getSeed */
const char SCA_RandomSensor::GetSeed_doc[] =
"getSeed()\n"
"\tReturns the initial seed of the generator. Equal seeds produce\n"
"\tequal series.\n";
PyObject* SCA_RandomSensor::PyGetSeed(PyObject* self, PyObject* args, PyObject* kwds) {
ShowDeprecationWarning("getSeed()", "the seed property");
return PyInt_FromLong(m_basegenerator->GetSeed());
}
/* 3. getLastDraw */
const char SCA_RandomSensor::GetLastDraw_doc[] =
"getLastDraw()\n"
"\tReturn the last value that was drawn.\n";
PyObject* SCA_RandomSensor::PyGetLastDraw(PyObject* self, PyObject* args, PyObject* kwds) {
ShowDeprecationWarning("getLastDraw()", "the lastDraw property");
return PyInt_FromLong(m_lastdraw);
}
PyObject* SCA_RandomSensor::pyattr_get_seed(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
SCA_RandomSensor* self= static_cast<SCA_RandomSensor*>(self_v);
return PyInt_FromLong(self->m_basegenerator->GetSeed());
}
int SCA_RandomSensor::pyattr_set_seed(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
SCA_RandomSensor* self= static_cast<SCA_RandomSensor*>(self_v);
if (!PyInt_Check(value)) {
PyErr_SetString(PyExc_TypeError, "expected an integer");
return -1;
}
self->m_basegenerator->SetSeed(PyInt_AsLong(value));
return 0;
}
/* eof */