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blender/source/gameengine/Ketsji/KX_IpoActuator.cpp

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/*
* Do Ipo stuff
*
*
* ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 *****
*/
/** \file gameengine/Ketsji/KX_IpoActuator.cpp
* \ingroup ketsji
*/
#include <cmath>
#include "KX_IpoActuator.h"
#include "KX_GameObject.h"
#include "FloatValue.h"
#include "KX_KetsjiEngine.h"
/* ------------------------------------------------------------------------- */
/* Type strings */
/* ------------------------------------------------------------------------- */
const char *KX_IpoActuator::S_KX_ACT_IPO_PLAY_STRING = "Play";
const char *KX_IpoActuator::S_KX_ACT_IPO_PINGPONG_STRING = "PingPong";
const char *KX_IpoActuator::S_KX_ACT_IPO_FLIPPER_STRING = "Flipper";
const char *KX_IpoActuator::S_KX_ACT_IPO_LOOPSTOP_STRING = "LoopStop";
const char *KX_IpoActuator::S_KX_ACT_IPO_LOOPEND_STRING = "LoopEnd";
const char *KX_IpoActuator::S_KX_ACT_IPO_KEY2KEY_STRING = "Key2key";
const char *KX_IpoActuator::S_KX_ACT_IPO_FROM_PROP_STRING = "FromProp";
/* ------------------------------------------------------------------------- */
/* Native functions */
/* ------------------------------------------------------------------------- */
KX_IpoActuator::KX_IpoActuator(SCA_IObject* gameobj,
const STR_String& propname,
const STR_String& framePropname,
float starttime,
float endtime,
bool recurse,
int acttype,
bool ipo_as_force,
bool ipo_add,
bool ipo_local)
: SCA_IActuator(gameobj, KX_ACT_IPO),
m_bNegativeEvent(false),
m_startframe (starttime),
m_endframe(endtime),
m_recurse(recurse),
m_localtime(starttime),
m_direction(1),
m_propname(propname),
m_framepropname(framePropname),
m_ipo_as_force(ipo_as_force),
m_ipo_add(ipo_add),
m_ipo_local(ipo_local),
m_type(acttype)
{
this->ResetStartTime();
m_bIpoPlaying = false;
}
void KX_IpoActuator::SetStart(float starttime)
{
m_startframe=starttime;
}
void KX_IpoActuator::SetEnd(float endtime)
{
m_endframe=endtime;
}
bool KX_IpoActuator::ClampLocalTime()
{
if (m_startframe < m_endframe)
{
if (m_localtime < m_startframe)
{
m_localtime = m_startframe;
return true;
}
else if (m_localtime > m_endframe)
{
m_localtime = m_endframe;
return true;
}
} else {
if (m_localtime > m_startframe)
{
m_localtime = m_startframe;
return true;
}
else if (m_localtime < m_endframe)
{
m_localtime = m_endframe;
return true;
}
}
return false;
}
void KX_IpoActuator::SetStartTime(float curtime)
{
float direction = m_startframe < m_endframe ? 1.0f : -1.0f;
if (m_direction > 0)
m_starttime = curtime - direction*(m_localtime - m_startframe)/KX_KetsjiEngine::GetAnimFrameRate();
else
m_starttime = curtime - direction*(m_endframe - m_localtime)/KX_KetsjiEngine::GetAnimFrameRate();
}
void KX_IpoActuator::SetLocalTime(float curtime)
{
float delta_time = (curtime - m_starttime)*KX_KetsjiEngine::GetAnimFrameRate();
// negative delta_time is caused by floating point inaccuracy
// perhaps the inaccuracy could be reduced a bit
if ((m_localtime==m_startframe || m_localtime==m_endframe) && delta_time<0.0)
{
delta_time = 0.0;
}
if (m_endframe < m_startframe)
delta_time = -delta_time;
if (m_direction > 0)
m_localtime = m_startframe + delta_time;
else
m_localtime = m_endframe - delta_time;
}
bool KX_IpoActuator::Update(double curtime, bool frame)
{
// result = true if animation has to be continued, false if animation stops
// maybe there are events for us in the queue !
bool bNegativeEvent = false;
bool numevents = false;
bool bIpoStart = false;
curtime -= KX_KetsjiEngine::GetSuspendedDelta();
if (frame)
{
numevents = m_posevent || m_negevent;
bNegativeEvent = IsNegativeEvent();
RemoveAllEvents();
}
float start_smaller_then_end = ( m_startframe < m_endframe ? 1.0f : -1.0f);
bool result=true;
if (!bNegativeEvent)
{
if (m_starttime < -2.0f*fabs(m_endframe - m_startframe))
{
// start for all Ipo, initial start for LOOP_STOP
m_starttime = curtime;
m_bIpoPlaying = true;
bIpoStart = true;
}
}
switch ((IpoActType)m_type)
{
case KX_ACT_IPO_PLAY:
{
// Check if playing forwards. result = ! finished
if (start_smaller_then_end > 0.f)
result = (m_localtime < m_endframe && m_bIpoPlaying);
else
result = (m_localtime > m_endframe && m_bIpoPlaying);
if (result)
{
SetLocalTime(curtime);
/* Perform clamping */
ClampLocalTime();
if (bIpoStart)
((KX_GameObject*)GetParent())->InitIPO(m_ipo_as_force, m_ipo_add, m_ipo_local);
((KX_GameObject*)GetParent())->UpdateIPO(m_localtime,m_recurse);
} else
{
m_localtime=m_startframe;
m_direction=1;
}
break;
}
case KX_ACT_IPO_PINGPONG:
{
result = true;
if (bNegativeEvent && !m_bIpoPlaying)
result = false;
else
SetLocalTime(curtime);
if (ClampLocalTime())
{
result = false;
m_direction = -m_direction;
}
if (bIpoStart && m_direction > 0)
((KX_GameObject*)GetParent())->InitIPO(m_ipo_as_force, m_ipo_add, m_ipo_local);
((KX_GameObject*)GetParent())->UpdateIPO(m_localtime,m_recurse);
break;
}
case KX_ACT_IPO_FLIPPER:
{
if (bNegativeEvent && !m_bIpoPlaying)
result = false;
if (numevents)
{
float oldDirection = m_direction;
if (bNegativeEvent)
m_direction = -1;
else
m_direction = 1;
if (m_direction != oldDirection)
// changing direction, reset start time
SetStartTime(curtime);
}
SetLocalTime(curtime);
if (ClampLocalTime() && m_localtime == m_startframe)
result = false;
if (bIpoStart)
((KX_GameObject*)GetParent())->InitIPO(m_ipo_as_force, m_ipo_add, m_ipo_local);
((KX_GameObject*)GetParent())->UpdateIPO(m_localtime,m_recurse);
break;
}
case KX_ACT_IPO_LOOPSTOP:
{
if (numevents)
{
if (bNegativeEvent)
{
result = false;
m_bNegativeEvent = false;
numevents = false;
}
if (!m_bIpoPlaying)
{
// Ipo was stopped, make sure we will restart from where it stopped
SetStartTime(curtime);
if (!bNegativeEvent)
// positive signal will restart the Ipo
m_bIpoPlaying = true;
}
} // fall through to loopend, and quit the ipo animation immediatly
}
case KX_ACT_IPO_LOOPEND:
{
if (numevents){
if (bNegativeEvent && m_bIpoPlaying){
m_bNegativeEvent = true;
}
}
if (bNegativeEvent && !m_bIpoPlaying){
result = false;
}
else
{
if (m_localtime*start_smaller_then_end < m_endframe*start_smaller_then_end)
{
SetLocalTime(curtime);
}
else{
if (!m_bNegativeEvent){
/* Perform wraparound */
SetLocalTime(curtime);
if (start_smaller_then_end > 0.f)
m_localtime = m_startframe + fmod(m_localtime - m_startframe, m_endframe - m_startframe);
else
m_localtime = m_startframe - fmod(m_startframe - m_localtime, m_startframe - m_endframe);
SetStartTime(curtime);
bIpoStart = true;
}
else
{
/* Perform clamping */
m_localtime=m_endframe;
result = false;
m_bNegativeEvent = false;
}
}
}
if (m_bIpoPlaying && bIpoStart)
((KX_GameObject*)GetParent())->InitIPO(m_ipo_as_force, m_ipo_add, m_ipo_local);
((KX_GameObject*)GetParent())->UpdateIPO(m_localtime,m_recurse);
break;
}
case KX_ACT_IPO_KEY2KEY:
{
// not implemented yet
result = false;
break;
}
case KX_ACT_IPO_FROM_PROP:
{
result = !bNegativeEvent;
CValue* propval = GetParent()->GetProperty(m_propname);
if (propval)
{
m_localtime = propval->GetNumber();
if (bIpoStart)
((KX_GameObject*)GetParent())->InitIPO(m_ipo_as_force, m_ipo_add, m_ipo_local);
((KX_GameObject*)GetParent())->UpdateIPO(m_localtime,m_recurse);
} else
{
result = false;
}
break;
}
default:
result = false;
}
/* Set the property if its defined */
if (m_framepropname[0] != '\0') {
CValue* propowner = GetParent();
CValue* oldprop = propowner->GetProperty(m_framepropname);
CValue* newval = new CFloatValue(m_localtime);
if (oldprop) {
oldprop->SetValue(newval);
} else {
propowner->SetProperty(m_framepropname, newval);
}
newval->Release();
}
if (!result)
{
if (m_type != KX_ACT_IPO_LOOPSTOP)
this->ResetStartTime();
m_bIpoPlaying = false;
}
return result;
}
void KX_IpoActuator::ResetStartTime()
{
this->m_starttime = -2.0*fabs(this->m_endframe - this->m_startframe) - 1.0;
}
int KX_IpoActuator::string2mode(const char *modename)
{
IpoActType res = KX_ACT_IPO_NODEF;
if (strcmp(modename, S_KX_ACT_IPO_PLAY_STRING)==0) {
res = KX_ACT_IPO_PLAY;
} else if (strcmp(modename, S_KX_ACT_IPO_PINGPONG_STRING)==0) {
res = KX_ACT_IPO_PINGPONG;
} else if (strcmp(modename, S_KX_ACT_IPO_FLIPPER_STRING)==0) {
res = KX_ACT_IPO_FLIPPER;
} else if (strcmp(modename, S_KX_ACT_IPO_LOOPSTOP_STRING)==0) {
res = KX_ACT_IPO_LOOPSTOP;
} else if (strcmp(modename, S_KX_ACT_IPO_LOOPEND_STRING)==0) {
res = KX_ACT_IPO_LOOPEND;
} else if (strcmp(modename, S_KX_ACT_IPO_KEY2KEY_STRING)==0) {
res = KX_ACT_IPO_KEY2KEY;
} else if (strcmp(modename, S_KX_ACT_IPO_FROM_PROP_STRING)==0) {
res = KX_ACT_IPO_FROM_PROP;
}
return res;
}
#ifdef WITH_PYTHON
/* ------------------------------------------------------------------------- */
/* Python functions */
/* ------------------------------------------------------------------------- */
/* Integration hooks ------------------------------------------------------- */
PyTypeObject KX_IpoActuator::Type = {
PyVarObject_HEAD_INIT(NULL, 0)
"KX_IpoActuator",
sizeof(PyObjectPlus_Proxy),
0,
py_base_dealloc,
0,
0,
0,
0,
py_base_repr,
0,0,0,0,0,0,0,0,0,
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
0,0,0,0,0,0,0,
Methods,
0,
0,
&SCA_IActuator::Type,
0,0,0,0,0,0,
py_base_new
};
PyMethodDef KX_IpoActuator::Methods[] = {
{NULL,NULL} //Sentinel
};
PyAttributeDef KX_IpoActuator::Attributes[] = {
KX_PYATTRIBUTE_RW_FUNCTION("frameStart", KX_IpoActuator, pyattr_get_frame_start, pyattr_set_frame_start),
KX_PYATTRIBUTE_RW_FUNCTION("frameEnd", KX_IpoActuator, pyattr_get_frame_end, pyattr_set_frame_end),
KX_PYATTRIBUTE_STRING_RW("propName", 0, MAX_PROP_NAME, false, KX_IpoActuator, m_propname),
KX_PYATTRIBUTE_STRING_RW("framePropName", 0, MAX_PROP_NAME, false, KX_IpoActuator, m_framepropname),
KX_PYATTRIBUTE_INT_RW("mode", KX_ACT_IPO_NODEF+1, KX_ACT_IPO_MAX-1, true, KX_IpoActuator, m_type),
KX_PYATTRIBUTE_BOOL_RW("useIpoAsForce", KX_IpoActuator, m_ipo_as_force),
KX_PYATTRIBUTE_BOOL_RW("useIpoAdd", KX_IpoActuator, m_ipo_add),
KX_PYATTRIBUTE_BOOL_RW("useIpoLocal", KX_IpoActuator, m_ipo_local),
KX_PYATTRIBUTE_BOOL_RW("useChildren", KX_IpoActuator, m_recurse),
{ NULL } //Sentinel
};
PyObject* KX_IpoActuator::pyattr_get_frame_start(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_IpoActuator* self= static_cast<KX_IpoActuator*>(self_v);
return PyFloat_FromDouble(self->m_startframe);
}
int KX_IpoActuator::pyattr_set_frame_start(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_IpoActuator* self= static_cast<KX_IpoActuator*>(self_v);
float param = PyFloat_AsDouble(value);
if (PyErr_Occurred()) {
PyErr_SetString(PyExc_AttributeError, "frameStart = float: KX_IpoActuator, expected a float value");
return PY_SET_ATTR_FAIL;
}
self->m_startframe = param;
self->ResetStartTime();
return PY_SET_ATTR_SUCCESS;
}
PyObject* KX_IpoActuator::pyattr_get_frame_end(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef)
{
KX_IpoActuator* self= static_cast<KX_IpoActuator*>(self_v);
return PyFloat_FromDouble(self->m_endframe);
}
int KX_IpoActuator::pyattr_set_frame_end(void *self_v, const KX_PYATTRIBUTE_DEF *attrdef, PyObject *value)
{
KX_IpoActuator* self= static_cast<KX_IpoActuator*>(self_v);
float param = PyFloat_AsDouble(value);
if (PyErr_Occurred()) {
PyErr_SetString(PyExc_AttributeError, "frameEnd = float: KX_IpoActuator, expected a float value");
return PY_SET_ATTR_FAIL;
}
self->m_endframe = param;
self->ResetStartTime();
return PY_SET_ATTR_SUCCESS;
}
#endif // WITH_PYTHON
/* eof */
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