blender/source/gameengine/Converter/KX_ConvertControllers.cpp

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/*
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* $Id$
* ***** 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,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
* 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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*/
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/** \file gameengine/Converter/KX_ConvertControllers.cpp
* \ingroup bgeconv
*/
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#include "MEM_guardedalloc.h"
#include "KX_BlenderSceneConverter.h"
#include "KX_ConvertControllers.h"
#include "KX_Python.h"
// Controller
#include "SCA_ANDController.h"
#include "SCA_ORController.h"
#include "SCA_NANDController.h"
#include "SCA_NORController.h"
#include "SCA_XORController.h"
#include "SCA_XNORController.h"
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#include "SCA_PythonController.h"
#include "SCA_ExpressionController.h"
#include "SCA_LogicManager.h"
#include "KX_GameObject.h"
#include "IntValue.h"
/* This little block needed for linking to Blender... */
#ifdef WIN32
#include "BLI_winstuff.h"
#endif
#include "DNA_object_types.h"
#include "DNA_controller_types.h"
#include "DNA_text_types.h"
#include "BKE_text.h"
#include "BLI_blenlib.h"
/* end of blender include block */
static void
LinkControllerToActuators(
SCA_IController *game_controller,
bController* bcontr,
SCA_LogicManager* logicmgr,
KX_BlenderSceneConverter* converter
) {
// Iterate through the actuators of the game blender
// controller and find the corresponding ketsji actuator.
BGE performance, 4th round: logic This commit extends the technique of dynamic linked list to the logic system to eliminate as much as possible temporaries, map lookup or full scan. The logic engine is now free of memory allocation, which is an important stability factor. The overhead of the logic system is reduced by a factor between 3 and 6 depending on the logic setup. This is the speed-up you can expect on a logic setup using simple bricks. Heavy bricks like python controllers and ray sensors will still take about the same time to execute so the speed up will be less important. The core of the logic engine has been much reworked but the functionality is still the same except for one thing: the priority system on the execution of controllers. The exact same remark applies to actuators but I'll explain for controllers only: Previously, it was possible, with the "executePriority" attribute to set a controller to run before any other controllers in the game. Other than that, the sequential execution of controllers, as defined in Blender was guaranteed by default. With the new system, the sequential execution of controllers is still guaranteed but only within the controllers of one object. the user can no longer set a controller to run before any other controllers in the game. The "executePriority" attribute controls the execution of controllers within one object. The priority is a small number starting from 0 for the first controller and incrementing for each controller. If this missing feature is a must, a special method can be implemented to set a controller to run before all other controllers. Other improvements: - Systematic use of reference in parameter passing to avoid unnecessary data copy - Use pre increment in iterator instead of post increment to avoid temporary allocation - Use const char* instead of STR_String whenever possible to avoid temporary allocation - Fix reference counting bugs (memory leak) - Fix a crash in certain cases of state switching and object deletion - Minor speed up in property sensor - Removal of objects during the game is a lot faster
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game_controller->ReserveActuator(bcontr->totlinks);
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for (int i=0;i<bcontr->totlinks;i++)
{
bActuator* bact = (bActuator*) bcontr->links[i];
SCA_IActuator *game_actuator = converter->FindGameActuator(bact);
if (game_actuator) {
logicmgr->RegisterToActuator(game_controller, game_actuator);
}
}
}
void BL_ConvertControllers(
struct Object* blenderobject,
class KX_GameObject* gameobj,
SCA_LogicManager* logicmgr,
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int activeLayerBitInfo,
bool isInActiveLayer,
KX_BlenderSceneConverter* converter
) {
int uniqueint=0;
BGE performance, 4th round: logic This commit extends the technique of dynamic linked list to the logic system to eliminate as much as possible temporaries, map lookup or full scan. The logic engine is now free of memory allocation, which is an important stability factor. The overhead of the logic system is reduced by a factor between 3 and 6 depending on the logic setup. This is the speed-up you can expect on a logic setup using simple bricks. Heavy bricks like python controllers and ray sensors will still take about the same time to execute so the speed up will be less important. The core of the logic engine has been much reworked but the functionality is still the same except for one thing: the priority system on the execution of controllers. The exact same remark applies to actuators but I'll explain for controllers only: Previously, it was possible, with the "executePriority" attribute to set a controller to run before any other controllers in the game. Other than that, the sequential execution of controllers, as defined in Blender was guaranteed by default. With the new system, the sequential execution of controllers is still guaranteed but only within the controllers of one object. the user can no longer set a controller to run before any other controllers in the game. The "executePriority" attribute controls the execution of controllers within one object. The priority is a small number starting from 0 for the first controller and incrementing for each controller. If this missing feature is a must, a special method can be implemented to set a controller to run before all other controllers. Other improvements: - Systematic use of reference in parameter passing to avoid unnecessary data copy - Use pre increment in iterator instead of post increment to avoid temporary allocation - Use const char* instead of STR_String whenever possible to avoid temporary allocation - Fix reference counting bugs (memory leak) - Fix a crash in certain cases of state switching and object deletion - Minor speed up in property sensor - Removal of objects during the game is a lot faster
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int count = 0;
int executePriority=0;
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bController* bcontr = (bController*)blenderobject->controllers.first;
while (bcontr)
BGE performance, 4th round: logic This commit extends the technique of dynamic linked list to the logic system to eliminate as much as possible temporaries, map lookup or full scan. The logic engine is now free of memory allocation, which is an important stability factor. The overhead of the logic system is reduced by a factor between 3 and 6 depending on the logic setup. This is the speed-up you can expect on a logic setup using simple bricks. Heavy bricks like python controllers and ray sensors will still take about the same time to execute so the speed up will be less important. The core of the logic engine has been much reworked but the functionality is still the same except for one thing: the priority system on the execution of controllers. The exact same remark applies to actuators but I'll explain for controllers only: Previously, it was possible, with the "executePriority" attribute to set a controller to run before any other controllers in the game. Other than that, the sequential execution of controllers, as defined in Blender was guaranteed by default. With the new system, the sequential execution of controllers is still guaranteed but only within the controllers of one object. the user can no longer set a controller to run before any other controllers in the game. The "executePriority" attribute controls the execution of controllers within one object. The priority is a small number starting from 0 for the first controller and incrementing for each controller. If this missing feature is a must, a special method can be implemented to set a controller to run before all other controllers. Other improvements: - Systematic use of reference in parameter passing to avoid unnecessary data copy - Use pre increment in iterator instead of post increment to avoid temporary allocation - Use const char* instead of STR_String whenever possible to avoid temporary allocation - Fix reference counting bugs (memory leak) - Fix a crash in certain cases of state switching and object deletion - Minor speed up in property sensor - Removal of objects during the game is a lot faster
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{
bcontr = bcontr->next;
count++;
}
gameobj->ReserveController(count);
bcontr = (bController*)blenderobject->controllers.first;
while (bcontr)
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{
SCA_IController* gamecontroller = NULL;
switch(bcontr->type)
{
case CONT_LOGIC_AND:
{
gamecontroller = new SCA_ANDController(gameobj);
break;
}
case CONT_LOGIC_OR:
{
gamecontroller = new SCA_ORController(gameobj);
break;
}
case CONT_LOGIC_NAND:
{
gamecontroller = new SCA_NANDController(gameobj);
break;
}
case CONT_LOGIC_NOR:
{
gamecontroller = new SCA_NORController(gameobj);
break;
}
case CONT_LOGIC_XOR:
{
gamecontroller = new SCA_XORController(gameobj);
break;
}
case CONT_LOGIC_XNOR:
{
gamecontroller = new SCA_XNORController(gameobj);
break;
}
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case CONT_EXPRESSION:
{
bExpressionCont* bexpcont = (bExpressionCont*) bcontr->data;
STR_String expressiontext = STR_String(bexpcont->str);
if (expressiontext.Length() > 0)
{
gamecontroller = new SCA_ExpressionController(gameobj,expressiontext);
}
break;
}
case CONT_PYTHON:
{
bPythonCont* pycont = (bPythonCont*) bcontr->data;
SCA_PythonController* pyctrl = new SCA_PythonController(gameobj, pycont->mode);
gamecontroller = pyctrl;
#ifdef WITH_PYTHON
pyctrl->SetNamespace(converter->GetPyNamespace());
if(pycont->mode==SCA_PythonController::SCA_PYEXEC_SCRIPT) {
if (pycont->text)
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{
char *buf;
// this is some blender specific code
buf= txt_to_buf(pycont->text);
if (buf)
{
pyctrl->SetScriptText(STR_String(buf));
pyctrl->SetScriptName(pycont->text->id.name+2);
MEM_freeN(buf);
}
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}
}
else {
/* let the controller print any warnings here when importing */
pyctrl->SetScriptText(STR_String(pycont->module));
pyctrl->SetScriptName(pycont->module); /* will be something like module.func so using it as the name is OK */
if(pycont->flag & CONT_PY_DEBUG) {
printf("\nDebuging \"%s\", module for object %s\n\texpect worse performance.\n", pycont->module, blenderobject->id.name+2);
pyctrl->SetDebug(true);
}
}
#endif // WITH_PYTHON
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break;
}
default:
{
}
}
if (gamecontroller)
{
BGE performance, 4th round: logic This commit extends the technique of dynamic linked list to the logic system to eliminate as much as possible temporaries, map lookup or full scan. The logic engine is now free of memory allocation, which is an important stability factor. The overhead of the logic system is reduced by a factor between 3 and 6 depending on the logic setup. This is the speed-up you can expect on a logic setup using simple bricks. Heavy bricks like python controllers and ray sensors will still take about the same time to execute so the speed up will be less important. The core of the logic engine has been much reworked but the functionality is still the same except for one thing: the priority system on the execution of controllers. The exact same remark applies to actuators but I'll explain for controllers only: Previously, it was possible, with the "executePriority" attribute to set a controller to run before any other controllers in the game. Other than that, the sequential execution of controllers, as defined in Blender was guaranteed by default. With the new system, the sequential execution of controllers is still guaranteed but only within the controllers of one object. the user can no longer set a controller to run before any other controllers in the game. The "executePriority" attribute controls the execution of controllers within one object. The priority is a small number starting from 0 for the first controller and incrementing for each controller. If this missing feature is a must, a special method can be implemented to set a controller to run before all other controllers. Other improvements: - Systematic use of reference in parameter passing to avoid unnecessary data copy - Use pre increment in iterator instead of post increment to avoid temporary allocation - Use const char* instead of STR_String whenever possible to avoid temporary allocation - Fix reference counting bugs (memory leak) - Fix a crash in certain cases of state switching and object deletion - Minor speed up in property sensor - Removal of objects during the game is a lot faster
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LinkControllerToActuators(gamecontroller,bcontr,logicmgr,converter);
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gamecontroller->SetExecutePriority(executePriority++);
gamecontroller->SetBookmark((bcontr->flag & CONT_PRIO) != 0);
BGE patch: add state engine support in the logic bricks. This patch introduces a simple state engine system with the logic bricks. This system features full backward compatibility, multiple active states, multiple state transitions, automatic disabling of sensor and actuators, full GUI support and selective display of sensors and actuators. Note: Python API is available but not documented yet. It will be added asap. State internals =============== The state system is object based. The current state mask is stored in the object as a 32 bit value; each bit set in the mask is an active state. The controllers have a state mask too but only one bit can be set: a controller belongs to a single state. The game engine will only execute controllers that belong to active states. Sensors and actuators don't have a state mask but are effectively attached to states via their links to the controllers. Sensors and actuators can be connected to more than one state. When a controller becomes inactive because of a state change, its links to sensors and actuators are temporarily broken (until the state becomes active again). If an actuator gets isolated, i.e all the links to controllers are broken, it is automatically disabled. If a sensor gets isolated, the game engine will stop calling it to save CPU. It will also reset the sensor internal state so that it can react as if the game just started when it gets reconnected to an active controller. For example, an Always sensor in no pulse mode that is connected to a single state (i.e connected to one or more controllers of a single state) will generate a pulse each time the state becomes active. This feature is not available on all sensors, see the notes below. GUI === This system system is fully configurable through the GUI: the object state mask is visible under the object bar in the controller's colum as an array of buttons just like the 3D view layer mask. Click on a state bit to only display the controllers of that state. You can select more than one state with SHIFT-click. The All button sets all the bits so that you can see all the controllers of the object. The Ini button sets the state mask back to the object default state. You can change the default state of object by first selecting the desired state mask and storing using the menu under the State button. If you define a default state mask, it will be loaded into the object state make when you load the blend file or when you run the game under the blenderplayer. However, when you run the game under Blender, the current selected state mask will be used as the startup state for the object. This allows you to test specific state during the game design. The controller display the state they belong to with a new button in the controller header. When you add a new controller, it is added by default in the lowest enabled state. You can change the controller state by clicking on the button and selecting another state. If more than one state is enabled in the object state mask, controllers are grouped by state for more readibility. The new Sta button in the sensor and actuator column header allows you to display only the sensors and actuators that are linked to visible controllers. A new state actuator is available to modify the state during the game. It defines a bit mask and the operation to apply on the current object state mask: Cpy: the bit mask is copied to the object state mask. Add: the bits that set in the bit mask will be turned on in the object state mask. Sub: the bits that set in the bit mask will be turned off in the object state mask. Inv: the bits that set in the bit mask will be inverted in the objecyy state mask. Notes ===== - Although states have no name, a simply convention consists in using the name of the first controller of the state as the state name. The GUI will support that convention by displaying as a hint the name of the first controller of the state when you move the mouse over a state bit of the object state mask or of the state actuator bit mask. - Each object has a state mask and each object can have a state engine but if several objects are part of a logical group, it is recommended to put the state engine only in the main object and to link the controllers of that object to the sensors and actuators of the different objects. - When loading an old blend file, the state mask of all objects and controllers are initialized to 1 so that all the controllers belong to this single state. This ensures backward compatibility with existing game. - When the state actuator is activated at the same time as other actuators, these actuators are guaranteed to execute before being eventually disabled due to the state change. This is useful for example to send a message or update a property at the time of changing the state. - Sensors that depend on underlying resource won't reset fully when they are isolated. By the time they are acticated again, they will behave as follow: * keyboard sensor: keys already pressed won't be detected. The keyboard sensor is only sensitive to new key press. * collision sensor: objects already colliding won't be detected. Only new collisions are detected. * near and radar sensor: same as collision sensor.
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gamecontroller->SetState(bcontr->state_mask);
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STR_String uniquename = bcontr->name;
uniquename += "#CONTR#";
uniqueint++;
CIntValue* uniqueval = new CIntValue(uniqueint);
uniquename += uniqueval->GetText();
uniqueval->Release();
gamecontroller->SetName(uniquename);
gameobj->AddController(gamecontroller);
converter->RegisterGameController(gamecontroller, bcontr);
#ifdef WITH_PYTHON
if (bcontr->type==CONT_PYTHON) {
SCA_PythonController *pyctrl= static_cast<SCA_PythonController*>(gamecontroller);
/* not strictly needed but gives syntax errors early on and
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* gives more predictable performance for larger scripts */
if(pyctrl->m_mode==SCA_PythonController::SCA_PYEXEC_SCRIPT)
pyctrl->Compile();
else {
/* We cant do this because importing runs the script which could end up accessing
* internal BGE functions, this is unstable while we're converting the scene.
* This is a pitty because its useful to see errors at startup but cant help it */
// pyctrl->Import();
}
}
#endif // WITH_PYTHON
//done with gamecontroller
gamecontroller->Release();
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}
bcontr = bcontr->next;
}
}