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72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
/*
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Copyright (C) 2007, 2010 - Bit-Blot
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This file is part of Aquaria.
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Aquaria is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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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,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#pragma once
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inline bool RenderObject::isOnScreen()
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{
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if (followCamera == 1) return true;
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//if (followCamera != 0) return true;
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// note: radii are sqr-ed for speed
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const float cullRadiusSqr = (getCullRadiusSqr() * core->invGlobalScaleSqr) + core->cullRadiusSqr;
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return ((this->getFollowCameraPosition() - core->cullCenter).getSquaredLength2D() < cullRadiusSqr);
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}
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Vector RenderObject::getFollowCameraPosition() const
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{
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float f = followCamera;
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if (f == 0 && layer != -1)
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f = core->renderObjectLayers[layer].followCamera;
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if (f <= 0)
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{
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return position;
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}
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else
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{
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Vector pos = position;
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int fcl = 0;
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if (layer != -1)
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fcl = core->renderObjectLayers[layer].followCameraLock;
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switch (fcl)
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{
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case FCL_HORZ:
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pos.x = position.x - core->screenCenter.x;
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pos.x *= f;
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pos.x = core->screenCenter.x + pos.x;
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break;
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case FCL_VERT:
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pos.y = position.y - core->screenCenter.y;
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pos.y *= f;
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pos.y = core->screenCenter.y + pos.y;
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break;
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default:
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pos = position - core->screenCenter;
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pos *= f;
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pos = core->screenCenter + pos;
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break;
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}
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return pos;
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}
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}
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