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// This file may be redistributed and modified only under the terms of
// the GNU General Public License (See COPYING for details).
// Copyright (C) 2000-2003 Alistair Riddoch
#include "Compass.h"
#include "renderers/RenderSystem.h"
#include "src/Render.h"
#include <Eris/World.h>
#include <Eris/Entity.h>
#include <iostream>
namespace Sear
{
Compass::Compass(float pos_x, float pos_y) :
m_x(pos_x),
m_y(pos_y),
m_angle(45)
{
}
Compass::~Compass()
{
}
void Compass::setup()
{
m_compassCase = Sprite("compass_case");
m_compassNeedle = Sprite("compass_needle");
m_needleShadow = Sprite("compass_needle_shadow");
}
void Compass::update(double cameraRotation)
{
Eris::Entity* focus = Eris::World::Instance()->getFocusedEntity();
if (!focus) return;
WFMath::Quaternion q = focus->getOrientation();
Eris::Entity* ent = focus->getContainer();
while (ent && (ent != Eris::World::Instance()->getRootEntity())) {
q *= ent->getOrientation();
ent = ent->getContainer();
}
WFMath::Vector<3> northAxis(0.0, 1.0, 0.0),
facing(1.0, 0.0, 0.0);
facing.rotate(q); // orient in direction avatar is facing
double radAngle = WFMath::Angle<3>(northAxis, facing);
if (facing.x() < 0) radAngle = (M_PI * 2) - radAngle;
radAngle += cameraRotation;
m_angle = (radAngle * 180) / M_PI;
}
void Compass::draw(Render*r, bool select)
{
if (select) return;
r->setViewMode(ORTHOGRAPHIC);
r->translateObject(m_x, m_y, 0.0f);
m_compassCase.draw(r);
// draw the shadow, offset a little bit
r->store();
r->translateObject(-3.0f, -3.0f, 0.01f);
r->rotate(m_angle, 0.0f, 0.0f, 1.0f);
m_needleShadow.draw(r);
r->restore();
// finally draw the needle
r->rotate(m_angle, 0.0f, 0.0f, 1.0f);
m_compassNeedle.draw(r);
r->setViewMode(PERSPECTIVE);
}
void Compass::click()
{
}
} // namespace Sear
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