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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/scummsys.h"
#include "zvision/scripting/effects/distort_effect.h"
#include "zvision/zvision.h"
#include "zvision/scripting/script_manager.h"
#include "zvision/graphics/render_manager.h"
#include "zvision/graphics/render_table.h"
#include "common/stream.h"
namespace ZVision {
DistortNode::DistortNode(ZVision *engine, uint32 key, int16 speed, float startAngle, float endAngle, float startLineScale, float endLineScale)
: ScriptingEffect(engine, key, SCRIPTING_EFFECT_DISTORT) {
_angle = _engine->getRenderManager()->getRenderTable()->getAngle();
_linScale = _engine->getRenderManager()->getRenderTable()->getLinscale();
_speed = speed;
_incr = true;
_startAngle = startAngle;
_endAngle = endAngle;
_startLineScale = startLineScale;
_endLineScale = endLineScale;
_curFrame = 1.0;
_diffAngle = endAngle - startAngle;
_diffLinScale = endLineScale - startLineScale;
_frmSpeed = (float)speed / 15.0;
_frames = (int)ceil((5.0 - _frmSpeed * 2.0) / _frmSpeed);
if (_frames <= 0)
_frames = 1;
if (_key != StateKey_NotSet)
_engine->getScriptManager()->setStateValue(_key, 1);
}
DistortNode::~DistortNode() {
setParams(_angle, _linScale);
}
bool DistortNode::process(uint32 deltaTimeInMillis) {
float updTime = deltaTimeInMillis / (1000.0 / 60.0);
if (_incr)
_curFrame += updTime;
else
_curFrame -= updTime;
if (_curFrame < 1.0) {
_curFrame = 1.0;
_incr = true;
} else if (_curFrame > _frames) {
_curFrame = _frames;
_incr = false;
}
float diff = (1.0 / (5.0 - (_curFrame * _frmSpeed))) / (5.0 - _frmSpeed);
setParams(_startAngle + diff * _diffAngle, _startLineScale + diff * _diffLinScale);
return false;
}
void DistortNode::setParams(float angl, float linScale) {
RenderTable *table = _engine->getRenderManager()->getRenderTable();
if (table->getRenderState() == RenderTable::PANORAMA) {
table->setPanoramaFoV(angl);
table->setPanoramaScale(linScale);
table->generateRenderTable();
_engine->getRenderManager()->markDirty();
} else if (table->getRenderState() == RenderTable::TILT) {
table->setTiltFoV(angl);
table->setTiltScale(linScale);
table->generateRenderTable();
_engine->getRenderManager()->markDirty();
}
}
} // End of namespace ZVision
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