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/*
This file is part of Advanced Strategic Command; http://www.asc-hq.de
Copyright (C) 1994-2008 Martin Bickel and Marc Schellenberger
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; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
#include "action.h"
#include "../vehicle.h"
#include "action-registry.h"
#include "actioncontainer.h"
GameAction::GameAction( GameMap* map )
: gamemap(map), done(false)
{
static int counter = 0;
sequenceNumber = ++counter;
}
void GameAction::addChild( GameAction* action )
{
children.push_back ( action );
}
ActionResult GameAction::execute( const Context& context )
{
if ( context.parentAction )
context.parentAction->addChild( this );
Context c ( context, this );
try {
displayLogMessage(4, "executing " + getDescription() + "\n");
ActionResult result = runAction( c );
Command* command = dynamic_cast<Command*>(this);
if ( context.actionContainer && result.successful() && !context.parentAction && command)
context.actionContainer->add( command );
return result;
} catch ( ActionResult res ) {
return res;
}
}
ActionResult GameAction::undoChildren( const Context& context )
{
ActionResult res(0);
for ( Children::reverse_iterator i = children.rbegin(); i != children.rend(); ++i ) {
ActionResult r = (*i)->undo( context );
if ( !r.successful() && res.successful() )
res = r;
}
return res;
}
static void mergeActionFailures( ActionResult& failure, const ActionResult& res )
{
if ( failure.successful() && !res.successful())
failure = res;
}
ActionResult GameAction::undo( const Context& context )
{
// if there is one failuire, we'll preserve it
ActionResult failure(0);
if ( undoOrderChildFirst() ) {
ActionResult r = undoChildren(context);
mergeActionFailures( failure, r );
}
displayLogMessage(4, "undoing #" + ASCString::toString(sequenceNumber) + " " + getDescription() + "\n");
ActionResult res = undoAction( context );
if ( !res.successful() )
warningMessage("error undoing " + getDescription() + "\n" + res.getMessage() );
mergeActionFailures( failure, res );
if ( !undoOrderChildFirst() ) {
ActionResult r = undoChildren(context);
mergeActionFailures( failure, r );
}
return failure;
}
/*
GameActionID GameAction::getID() const
{
return ActionRegistry::Root;
}
*/
const int currentGameActionVersion = 1;
const int gameActionToken = 0x12003496;
void GameAction::read ( tnstream& stream )
{
displayLogMessage(1, "reading " + ASCString::toString(getID()) + "\n");
int version = stream.readInt();
if ( version > currentGameActionVersion )
throw tinvalidversion ( "GameAction", currentGameActionVersion, version );
readData( stream );
int token = stream.readInt();
if ( token != gameActionToken )
throw tinvalidversion ("GameActionToken for id " + ASCString::toString( getID() ), gameActionToken, token );
int childNum = stream.readInt();
for ( int i = 0; i < childNum; i++ ) {
GameAction* child = readFromStream( stream, getMap() );
addChild( child );
}
}
void GameAction::write ( tnstream& stream ) const
{
stream.writeInt( getID() );
stream.writeInt( currentGameActionVersion );
writeData( stream );
stream.writeInt( gameActionToken );
stream.writeInt( children.size() );
for ( int i = 0; i < children.size(); ++i )
children[i]->write( stream );
}
GameAction* GameAction::readFromStream( tnstream& stream, GameMap* map )
{
GameActionID id = GameActionID( stream.readInt() );
GameAction* action = gameActionFactory::Instance().createObject( id, map );
action->read( stream );
return action;
}
void GameAction::deleteChildren()
{
for ( Children::iterator i = children.begin(); i != children.end(); ++i )
delete *i;
children.clear();
}
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