AnimAction.cpp

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/*
Copyright (C) 2003-2006 The Pentagram team

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.
*/

#include "pent_include.h"
#include "AnimAction.h"
#include "Actor.h"

void AnimAction::getAnimRange(unsigned int lastanim, int lastdir,
                                          bool firststep, int dir,
                                          unsigned int& startframe, unsigned int& endframe) const
{
        startframe = 0;
        endframe = size;

        if (flags & AAF_TWOSTEP) {
                // two-step animation?
                if (firststep) {
                        if (flags & (AAF_LOOPING | AAF_LOOPING2)) {// CHECKME: unknown flag
                                // for a looping animation, start at the end to
                                // make things more fluid
                                startframe = size - 1;
                        } else {
                                startframe = 0;
                        }
                        endframe = size/2;
                } else {
                        // second step starts halfway
                        startframe = size / 2;
                        if (flags & (AAF_LOOPING | AAF_LOOPING2)) {// CHECKME: unknown flag
                                endframe = size - 1;
                        }
                }
        } else {
                if (lastanim == action && lastdir == dir && size > 1)
                {
                        // skip first frame if repeating an animation
                        startframe = 1;
                }
        }
}

void AnimAction::getAnimRange(Actor* actor, int dir,
                                                          unsigned int& startframe,
                                                          unsigned int& endframe) const
{
        getAnimRange(actor->getLastAnim(), actor->getDir(),
                                 (actor->getActorFlags() & Actor::ACT_FIRSTSTEP) != 0,
                                 dir, startframe, endframe);
}

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