1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/**
* 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),
{NULL} //Sentinel
};
PyObject* SCA_RandomSensor::py_getattro(PyObject *attr) {
PyObject* object = py_getattro_self(Attributes, this, attr);
if (object != NULL)
return object;
char *attr_str= PyString_AsString(attr);
if (!strcmp(attr_str,"seed")) {
return PyInt_FromLong(m_basegenerator->GetSeed());
}
py_getattro_up(SCA_ISensor);
}
int SCA_RandomSensor::py_setattro(PyObject *attr, PyObject *value)
{
int ret = py_setattro_self(Attributes, this, attr, value);
if (ret >= 0)
return ret;
char *attr_str= PyString_AsString(attr);
if (!strcmp(attr_str,"seed")) {
if (PyInt_Check(value)) {
int ival = PyInt_AsLong(value);
m_basegenerator->SetSeed(ival);
return 0;
} else {
PyErr_SetString(PyExc_TypeError, "expected an integer");
return 1;
}
}
return SCA_ISensor::py_setattro(attr, value);
}
/* 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);
}
/* eof */
|