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Aquaria/BBGE/RenderObject_inline.h

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C

/*
Copyright (C) 2007, 2010 - Bit-Blot
This file is part of Aquaria.
Aquaria 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.
*/
#pragma once
inline bool RenderObject::isOnScreen()
{
if (followCamera == 1) return true;
//if (followCamera != 0) return true;
// note: radii are sqr-ed for speed
const float cullRadiusSqr = (getCullRadiusSqr() * core->invGlobalScaleSqr) + core->cullRadiusSqr;
return ((this->getFollowCameraPosition() - core->cullCenter).getSquaredLength2D() < cullRadiusSqr);
}
Vector RenderObject::getFollowCameraPosition() const
{
float f = followCamera;
if (f == 0 && layer != -1)
f = core->renderObjectLayers[layer].followCamera;
if (f <= 0)
{
return position;
}
else
{
Vector pos = position;
int fcl = 0;
if (layer != -1)
fcl = core->renderObjectLayers[layer].followCameraLock;
switch (fcl)
{
case FCL_HORZ:
pos.x = position.x - core->screenCenter.x;
pos.x *= f;
pos.x = core->screenCenter.x + pos.x;
break;
case FCL_VERT:
pos.y = position.y - core->screenCenter.y;
pos.y *= f;
pos.y = core->screenCenter.y + pos.y;
break;
default:
pos = position - core->screenCenter;
pos *= f;
pos = core->screenCenter + pos;
break;
}
return pos;
}
}