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executable file
·1919 lines (1705 loc) · 49.2 KB
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/*
* Copyright 2010-2015 OpenXcom Developers.
*
* This file is part of OpenXcom.
*
* OpenXcom 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 3 of the License, or
* (at your option) any later version.
*
* OpenXcom 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 OpenXcom. If not, see <http://www.gnu.org/licenses/>.
*/
#define _USE_MATH_DEFINES
#include "Globe.h"
#include <cmath>
#include <algorithm>
#include "../fmath.h"
#include "../Engine/Action.h"
#include "../Engine/SurfaceSet.h"
#include "../Engine/Timer.h"
#include "../Resource/ResourcePack.h"
#include "../Ruleset/Polygon.h"
#include "../Ruleset/Polyline.h"
#include "../Engine/FastLineClip.h"
#include "../Engine/Game.h"
#include "../Savegame/SavedGame.h"
#include "../Savegame/GameTime.h"
#include "../Savegame/Base.h"
#include "../Savegame/Country.h"
#include "../Ruleset/RuleCountry.h"
#include "../Interface/Text.h"
#include "../Engine/LocalizedText.h"
#include "../Ruleset/RuleRegion.h"
#include "../Savegame/Region.h"
#include "../Ruleset/City.h"
#include "../Savegame/Target.h"
#include "../Savegame/Ufo.h"
#include "../Savegame/Craft.h"
#include "../Savegame/Waypoint.h"
#include "../Engine/ShaderMove.h"
#include "../Engine/ShaderRepeat.h"
#include "../Engine/Options.h"
#include "../Savegame/MissionSite.h"
#include "../Savegame/AlienBase.h"
#include "../Engine/Language.h"
#include "../Savegame/BaseFacility.h"
#include "../Ruleset/RuleBaseFacility.h"
#include "../Ruleset/RuleCraft.h"
#include "../Ruleset/Ruleset.h"
#include "../Ruleset/RuleGlobe.h"
#include "../Interface/Cursor.h"
#include "../Engine/Screen.h"
namespace OpenXcom
{
const double Globe::ROTATE_LONGITUDE = 0.10;
const double Globe::ROTATE_LATITUDE = 0.06;
Uint8 Globe::OCEAN_COLOR;
Uint8 Globe::COUNTRY_LABEL_COLOR;
Uint8 Globe::LINE_COLOR;
Uint8 Globe::CITY_LABEL_COLOR;
Uint8 Globe::BASE_LABEL_COLOR;
namespace
{
///helper class for `Globe` for drawing earth globe with shadows
struct GlobeStaticData
{
///array of shading gradient
Sint16 shade_gradient[240];
///size of x & y of noise surface
const int random_surf_size;
/**
* Function returning normal vector of sphere surface
* @param ox x cord of sphere center
* @param oy y cord of sphere center
* @param r radius of sphere
* @param x cord of point where we getting this vector
* @param y cord of point where we getting this vector
* @return normal vector of sphere surface
*/
inline Cord circle_norm(double ox, double oy, double r, double x, double y)
{
const double limit = r*r;
const double norm = 1./r;
Cord ret;
ret.x = (x-ox);
ret.y = (y-oy);
const double temp = (ret.x)*(ret.x) + (ret.y)*(ret.y);
if (limit > temp)
{
ret.x *= norm;
ret.y *= norm;
ret.z = sqrt(limit - temp)*norm;
return ret;
}
else
{
ret.x = 0.;
ret.y = 0.;
ret.z = 0.;
return ret;
}
}
//initialization
GlobeStaticData() : random_surf_size(60)
{
//filling terminator gradient LUT
for (int i=0; i<240; ++i)
{
int j = i - 120;
if (j<-66) j=-16;
else
if (j<-48) j=-15;
else
if (j<-33) j=-14;
else
if (j<-22) j=-13;
else
if (j<-15) j=-12;
else
if (j<-11) j=-11;
else
if (j<-9) j=-10;
if (j>120) j=19;
else
if (j>98) j=18;
else
if (j>86) j=17;
else
if (j>74) j=16;
else
if (j>54) j=15;
else
if (j>38) j=14;
else
if (j>26) j=13;
else
if (j>18) j=12;
else
if (j>13) j=11;
else
if (j>10) j=10;
else
if (j>8) j=9;
shade_gradient[i]= j+16;
}
}
};
GlobeStaticData static_data;
struct Ocean
{
static inline void func(Uint8& dest, const int&, const int&, const int&, const int&)
{
dest = Globe::OCEAN_COLOR;
}
};
struct CreateShadow
{
static inline Uint8 getShadowValue(const Uint8& dest, const Cord& earth, const Cord& sun, const Sint16& noise)
{
Cord temp = earth;
//diff
temp -= sun;
//norm
temp.x *= temp.x;
temp.y *= temp.y;
temp.z *= temp.z;
temp.x += temp.z + temp.y;
//we have norm of distance between 2 vectors, now stored in `x`
temp.x -= 2;
temp.x *= 125.;
if (temp.x < -110)
temp.x = -31;
else if (temp.x > 120)
temp.x = 50;
else
temp.x = static_data.shade_gradient[(Sint16)temp.x + 120];
temp.x -= noise;
if (temp.x > 0.)
{
const Sint16 val = (temp.x> 31)? 31 : (Sint16)temp.x;
const int d = dest & helper::ColorGroup;
if (d == Globe::OCEAN_COLOR || d == Globe::OCEAN_COLOR + 16)
{
//this pixel is ocean
return Globe::OCEAN_COLOR + val;
}
else
{
//this pixel is land
if (dest==0) return val;
const int s = val / 3;
const int e = dest+s;
if (e > d + helper::ColorShade)
return d + helper::ColorShade;
return e;
}
}
else
{
const int d = dest & helper::ColorGroup;
if (d == Globe::OCEAN_COLOR || d == Globe::OCEAN_COLOR + 16)
{
//this pixel is ocean
return Globe::OCEAN_COLOR;
}
else
{
//this pixel is land
return dest;
}
}
}
static inline void func(Uint8& dest, const Cord& earth, const Cord& sun, const Sint16& noise, const int&)
{
if (dest && earth.z)
dest = getShadowValue(dest, earth, sun, noise);
else
dest = 0;
}
};
}//namespace
/**
* Sets up a globe with the specified size and position.
* @param game Pointer to core game.
* @param cenX X position of the center of the globe.
* @param cenY Y position of the center of the globe.
* @param width Width in pixels.
* @param height Height in pixels.
* @param x X position in pixels.
* @param y Y position in pixels.
*/
Globe::Globe(Game* game, int cenX, int cenY, int width, int height, int x, int y) : InteractiveSurface(width, height, x, y), _rotLon(0.0), _rotLat(0.0), _hoverLon(0.0), _hoverLat(0.0), _cenX(cenX), _cenY(cenY), _game(game), _hover(false), _blink(-1),
_isMouseScrolling(false), _isMouseScrolled(false), _xBeforeMouseScrolling(0), _yBeforeMouseScrolling(0), _lonBeforeMouseScrolling(0.0), _latBeforeMouseScrolling(0.0), _mouseScrollingStartTime(0), _totalMouseMoveX(0), _totalMouseMoveY(0), _mouseMovedOverThreshold(false)
{
_rules = game->getRuleset()->getGlobe();
_texture = new SurfaceSet(*_game->getResourcePack()->getSurfaceSet("TEXTURE.DAT"));
_markerSet = new SurfaceSet(*_game->getResourcePack()->getSurfaceSet("GlobeMarkers"));
_countries = new Surface(width, height, x, y);
_markers = new Surface(width, height, x, y);
_radars = new Surface(width, height, x, y);
_clipper = new FastLineClip(x, x+width, y, y+height);
// Animation timers
_blinkTimer = new Timer(100);
_blinkTimer->onTimer((SurfaceHandler)&Globe::blink);
_blinkTimer->start();
_rotTimer = new Timer(10);
_rotTimer->onTimer((SurfaceHandler)&Globe::rotate);
_cenLon = _game->getSavedGame()->getGlobeLongitude();
_cenLat = _game->getSavedGame()->getGlobeLatitude();
_zoom = _game->getSavedGame()->getGlobeZoom();
_zoomOld = _zoom;
setupRadii(width, height);
setZoom(_zoom);
//filling random noise "texture"
_randomNoiseData.resize(static_data.random_surf_size * static_data.random_surf_size);
for (size_t i=0; i<_randomNoiseData.size(); ++i)
_randomNoiseData[i] = rand()%4;
cachePolygons();
}
/**
* Deletes the contained surfaces.
*/
Globe::~Globe()
{
delete _texture;
delete _blinkTimer;
delete _rotTimer;
delete _countries;
delete _markers;
//delete _texture;
//delete _markerSet;
delete _radars;
delete _clipper;
for (std::list<Polygon*>::iterator i = _cacheLand.begin(); i != _cacheLand.end(); ++i)
{
delete *i;
}
}
/**
* Converts a polar point into a cartesian point for
* mapping a polygon onto the 3D-looking globe.
* @param lon Longitude of the polar point.
* @param lat Latitude of the polar point.
* @param x Pointer to the output X position.
* @param y Pointer to the output Y position.
*/
void Globe::polarToCart(double lon, double lat, Sint16 *x, Sint16 *y) const
{
// Orthographic projection
*x = _cenX + (Sint16)floor(_radius * cos(lat) * sin(lon - _cenLon));
*y = _cenY + (Sint16)floor(_radius * (cos(_cenLat) * sin(lat) - sin(_cenLat) * cos(lat) * cos(lon - _cenLon)));
}
void Globe::polarToCart(double lon, double lat, double *x, double *y) const
{
// Orthographic projection
*x = _cenX + _radius * cos(lat) * sin(lon - _cenLon);
*y = _cenY + _radius * (cos(_cenLat) * sin(lat) - sin(_cenLat) * cos(lat) * cos(lon - _cenLon));
}
/**
* Converts a cartesian point into a polar point for
* mapping a globe click onto the flat world map.
* @param x X position of the cartesian point.
* @param y Y position of the cartesian point.
* @param lon Pointer to the output longitude.
* @param lat Pointer to the output latitude.
*/
void Globe::cartToPolar(Sint16 x, Sint16 y, double *lon, double *lat) const
{
// Orthographic projection
x -= _cenX;
y -= _cenY;
double rho = sqrt((double)(x*x + y*y));
double c = asin(rho / _radius);
if ( AreSame(rho, 0.0) )
{
*lat = _cenLat;
*lon = _cenLon;
}
else
{
*lat = asin((y * sin(c) * cos(_cenLat)) / rho + cos(c) * sin(_cenLat));
*lon = atan2(x * sin(c),(rho * cos(_cenLat) * cos(c) - y * sin(_cenLat) * sin(c))) + _cenLon;
}
// Keep between 0 and 2xPI
while (*lon < 0)
*lon += 2 * M_PI;
while (*lon >= 2 * M_PI)
*lon -= 2 * M_PI;
}
/**
* Checks if a polar point is on the back-half of the globe,
* invisible to the player.
* @param lon Longitude of the point.
* @param lat Latitude of the point.
* @return True if it's on the back, False if it's on the front.
*/
bool Globe::pointBack(double lon, double lat) const
{
double c = cos(_cenLat) * cos(lat) * cos(lon - _cenLon) + sin(_cenLat) * sin(lat);
return c < 0.0;
}
/** Return latitude of last visible to player point on given longitude.
* @param lon Longitude of the point.
* @return Longitude of last visible point.
*/
double Globe::lastVisibleLat(double lon) const
{
// double c = cos(_cenLat) * cos(lat) * cos(lon - _cenLon) + sin(_cenLat) * sin(lat);
// tan(lat) = -cos(_cenLat) * cos(lon - _cenLon)/sin(_cenLat) ;
return atan(-cos(_cenLat) * cos(lon - _cenLon)/sin(_cenLat));
}
/**
* Checks if a polar point is inside a certain polygon.
* @param lon Longitude of the point.
* @param lat Latitude of the point.
* @param poly Pointer to the polygon.
* @return True if it's inside, False if it's outside.
*/
bool Globe::insidePolygon(double lon, double lat, Polygon *poly) const
{
bool backFace = true;
for (int i = 0; i < poly->getPoints(); ++i)
{
backFace = backFace && pointBack(poly->getLongitude(i), poly->getLatitude(i));
}
if (backFace != pointBack(lon, lat))
return false;
bool odd = false;
for (int i = 0; i < poly->getPoints(); ++i)
{
int j = (i + 1) % poly->getPoints();
/*double x = lon, y = lat,
x_i = poly->getLongitude(i), y_i = poly->getLatitude(i),
x_j = poly->getLongitude(j), y_j = poly->getLatitude(j);*/
double x, y, x_i, x_j, y_i, y_j;
polarToCart(poly->getLongitude(i), poly->getLatitude(i), &x_i, &y_i);
polarToCart(poly->getLongitude(j), poly->getLatitude(j), &x_j, &y_j);
polarToCart(lon, lat, &x, &y);
if (((y_i < y && y_j >= y) || (y_j < y && y_i >= y)) && (x_i <= x || x_j <= x))
{
odd ^= (x_i + (y - y_i) / (y_j - y_i) * (x_j - x_i) < x);
}
}
return odd;
}
/**
* Sets a leftwards rotation speed and starts the timer.
*/
void Globe::rotateLeft()
{
_rotLon = -ROTATE_LONGITUDE;
if (!_rotTimer->isRunning()) _rotTimer->start();
}
/**
* Sets a rightwards rotation speed and starts the timer.
*/
void Globe::rotateRight()
{
_rotLon = ROTATE_LONGITUDE;
if (!_rotTimer->isRunning()) _rotTimer->start();
}
/**
* Sets a upwards rotation speed and starts the timer.
*/
void Globe::rotateUp()
{
_rotLat = -ROTATE_LATITUDE;
if (!_rotTimer->isRunning()) _rotTimer->start();
}
/**
* Sets a downwards rotation speed and starts the timer.
*/
void Globe::rotateDown()
{
_rotLat = ROTATE_LATITUDE;
if (!_rotTimer->isRunning()) _rotTimer->start();
}
/**
* Resets the rotation speed and timer.
*/
void Globe::rotateStop()
{
_rotLon = 0.0;
_rotLat = 0.0;
_rotTimer->stop();
}
/**
* Resets longitude rotation speed and timer.
*/
void Globe::rotateStopLon()
{
_rotLon = 0.0;
if (AreSame(_rotLat, 0.0))
{
_rotTimer->stop();
}
}
/**
* Resets latitude rotation speed and timer.
*/
void Globe::rotateStopLat()
{
_rotLat = 0.0;
if (AreSame(_rotLon, 0.0))
{
_rotTimer->stop();
}
}
/**
* Changes the current globe zoom factor.
* @param zoom New zoom.
*/
void Globe::setZoom(size_t zoom)
{
_zoom = std::min(std::max(zoom, (size_t)0u), _zoomRadius.size() - 1);
_zoomTexture = (2 - (int)floor(_zoom / 2.0)) * (_texture->getTotalFrames() / 3);
_radius = _zoomRadius[_zoom];
_game->getSavedGame()->setGlobeZoom(_zoom);
if (_isMouseScrolling)
{
_lonBeforeMouseScrolling = _cenLon;
_latBeforeMouseScrolling = _cenLat;
_totalMouseMoveX = 0; _totalMouseMoveY = 0;
}
invalidate();
}
/**
* Increases the zoom level on the globe.
*/
void Globe::zoomIn()
{
if (_zoom < _zoomRadius.size() - 1)
{
setZoom(_zoom + 1);
}
}
/**
* Decreases the zoom level on the globe.
*/
void Globe::zoomOut()
{
if (_zoom > 0)
{
setZoom(_zoom - 1);
}
}
/**
* Zooms the globe out as far as possible.
*/
void Globe::zoomMin()
{
if (_zoom > 0)
{
setZoom(0);
}
}
/**
* Zooms the globe in as close as possible.
*/
void Globe::zoomMax()
{
if (_zoom < _zoomRadius.size() - 1)
{
setZoom(_zoomRadius.size() - 1);
}
}
/**
* Stores the zoom used before a dogfight.
*/
void Globe::saveZoomDogfight()
{
_zoomOld = _zoom;
}
/**
* Zooms the globe smoothly into dogfight level.
* @return Is the globe already zoomed in?
*/
bool Globe::zoomDogfightIn()
{
if (_zoom < DOGFIGHT_ZOOM)
{
double radiusNow = _radius;
if (radiusNow + _radiusStep >= _zoomRadius[DOGFIGHT_ZOOM])
{
setZoom(DOGFIGHT_ZOOM);
}
else
{
if (radiusNow + _radiusStep >= _zoomRadius[_zoom + 1])
_zoom++;
setZoom(_zoom);
_radius = radiusNow + _radiusStep;
}
return false;
}
return true;
}
/**
* Zooms the globe smoothly out of dogfight level.
* @return Is the globe already zoomed out?
*/
bool Globe::zoomDogfightOut()
{
if (_zoom > _zoomOld)
{
double radiusNow = _radius;
if (radiusNow - _radiusStep <= _zoomRadius[_zoomOld])
{
setZoom(_zoomOld);
}
else
{
if (radiusNow - _radiusStep <= _zoomRadius[_zoom - 1])
_zoom--;
setZoom(_zoom);
_radius = radiusNow - _radiusStep;
}
return false;
}
return true;
}
/**
* Rotates the globe to center on a certain
* polar point on the world map.
* @param lon Longitude of the point.
* @param lat Latitude of the point.
*/
void Globe::center(double lon, double lat)
{
_cenLon = lon;
_cenLat = lat;
_game->getSavedGame()->setGlobeLongitude(_cenLon);
_game->getSavedGame()->setGlobeLatitude(_cenLat);
invalidate();
}
/**
* Checks if a polar point is inside the globe's landmass.
* @param lon Longitude of the point.
* @param lat Latitude of the point.
* @return True if it's inside, False if it's outside.
*/
bool Globe::insideLand(double lon, double lat) const
{
bool inside = false;
// We're only temporarily changing cenLon/cenLat so the "const" is actually preserved
Globe* const globe = const_cast<Globe* const>(this); // WARNING: BAD CODING PRACTICE
double oldLon = _cenLon, oldLat = _cenLat;
globe->_cenLon = lon;
globe->_cenLat = lat;
for (std::list<Polygon*>::iterator i = _rules->getPolygons()->begin(); i != _rules->getPolygons()->end() && !inside; ++i)
{
inside = insidePolygon(lon, lat, *i);
}
globe->_cenLon = oldLon;
globe->_cenLat = oldLat;
return inside;
}
/**
* Switches the amount of detail shown on the globe.
* With detail on, country and city details are shown when zoomed in.
*/
void Globe::toggleDetail()
{
Options::globeDetail = !Options::globeDetail;
drawDetail();
}
/**
* Checks if a certain target is near a certain cartesian point
* (within a circled area around it) over the globe.
* @param target Pointer to target.
* @param x X coordinate of point.
* @param y Y coordinate of point.
* @return True if it's near, false otherwise.
*/
bool Globe::targetNear(Target* target, int x, int y) const
{
Sint16 tx, ty;
if (pointBack(target->getLongitude(), target->getLatitude()))
return false;
polarToCart(target->getLongitude(), target->getLatitude(), &tx, &ty);
int dx = x - tx;
int dy = y - ty;
return (dx * dx + dy * dy <= NEAR_RADIUS);
}
/**
* Returns a list of all the targets currently near a certain
* cartesian point over the globe.
* @param x X coordinate of point.
* @param y Y coordinate of point.
* @param craft Only get craft targets.
* @return List of pointers to targets.
*/
std::vector<Target*> Globe::getTargets(int x, int y, bool craft) const
{
std::vector<Target*> v;
if (!craft)
{
for (std::vector<Base*>::iterator i = _game->getSavedGame()->getBases()->begin(); i != _game->getSavedGame()->getBases()->end(); ++i)
{
if ((*i)->getLongitude() == 0.0 && (*i)->getLatitude() == 0.0)
continue;
if (targetNear((*i), x, y))
{
v.push_back(*i);
}
for (std::vector<Craft*>::iterator j = (*i)->getCrafts()->begin(); j != (*i)->getCrafts()->end(); ++j)
{
if ((*j)->getLongitude() == (*i)->getLongitude() && (*j)->getLatitude() == (*i)->getLatitude() && (*j)->getDestination() == 0)
continue;
if (targetNear((*j), x, y))
{
v.push_back(*j);
}
}
}
}
for (std::vector<Ufo*>::iterator i = _game->getSavedGame()->getUfos()->begin(); i != _game->getSavedGame()->getUfos()->end(); ++i)
{
if (!(*i)->getDetected())
continue;
if (targetNear((*i), x, y))
{
v.push_back(*i);
}
}
for (std::vector<Waypoint*>::iterator i = _game->getSavedGame()->getWaypoints()->begin(); i != _game->getSavedGame()->getWaypoints()->end(); ++i)
{
if (targetNear((*i), x, y))
{
v.push_back(*i);
}
}
for (std::vector<MissionSite*>::iterator i = _game->getSavedGame()->getMissionSites()->begin(); i != _game->getSavedGame()->getMissionSites()->end(); ++i)
{
if (targetNear((*i), x, y))
{
v.push_back(*i);
}
}
for (std::vector<AlienBase*>::iterator i = _game->getSavedGame()->getAlienBases()->begin(); i != _game->getSavedGame()->getAlienBases()->end(); ++i)
{
if (!(*i)->isDiscovered())
{
continue;
}
if (targetNear((*i), x, y))
{
v.push_back(*i);
}
}
return v;
}
/**
* Takes care of pre-calculating all the polygons currently visible
* on the globe and caching them so they only need to be recalculated
* when the globe is actually moved.
*/
void Globe::cachePolygons()
{
cache(_rules->getPolygons(), &_cacheLand);
}
/**
* Caches a set of polygons.
* @param polygons Pointer to list of polygons.
* @param cache Pointer to cache.
*/
void Globe::cache(std::list<Polygon*> *polygons, std::list<Polygon*> *cache)
{
// Clear existing cache
for (std::list<Polygon*>::iterator i = cache->begin(); i != cache->end(); ++i)
{
delete *i;
}
cache->clear();
// Pre-calculate values to cache
for (std::list<Polygon*>::iterator i = polygons->begin(); i != polygons->end(); ++i)
{
// Is quad on the back face?
double closest = 0.0;
double z;
double furthest = 0.0;
for (int j = 0; j < (*i)->getPoints(); ++j)
{
z = cos(_cenLat) * cos((*i)->getLatitude(j)) * cos((*i)->getLongitude(j) - _cenLon) + sin(_cenLat) * sin((*i)->getLatitude(j));
if (z > closest)
closest = z;
else if (z < furthest)
furthest = z;
}
if (-furthest > closest)
continue;
Polygon* p = new Polygon(**i);
// Convert coordinates
for (int j = 0; j < p->getPoints(); ++j)
{
Sint16 x, y;
polarToCart(p->getLongitude(j), p->getLatitude(j), &x, &y);
p->setX(j, x);
p->setY(j, y);
}
cache->push_back(p);
}
}
/**
* Replaces a certain amount of colors in the palette of the globe.
* @param colors Pointer to the set of colors.
* @param firstcolor Offset of the first color to replace.
* @param ncolors Amount of colors to replace.
*/
void Globe::setPalette(SDL_Color *colors, int firstcolor, int ncolors)
{
Surface::setPalette(colors, firstcolor, ncolors);
_texture->setPalette(colors, firstcolor, ncolors);
_markerSet->setPalette(colors, firstcolor, ncolors);
_countries->setPalette(colors, firstcolor, ncolors);
_markers->setPalette(colors, firstcolor, ncolors);
_radars->setPalette(colors, firstcolor, ncolors);
}
/**
* Keeps the animation timers running.
*/
void Globe::think()
{
_blinkTimer->think(0, this);
_rotTimer->think(0, this);
}
/**
* Makes the globe markers blink.
*/
void Globe::blink()
{
_blink = -_blink;
for (size_t i = 0; i < _markerSet->getTotalFrames(); ++i)
{
if (i != CITY_MARKER)
_markerSet->getFrame(i)->offset(_blink);
}
drawMarkers();
}
/**
* Rotates the globe by a set amount. Necessary
* since the globe keeps rotating while a button
* is pressed down.
*/
void Globe::rotate()
{
_cenLon += _rotLon * ((110 - Options::geoScrollSpeed) / 100.0) / (_zoom+1);
_cenLat += _rotLat * ((110 - Options::geoScrollSpeed) / 100.0) / (_zoom+1);
_game->getSavedGame()->setGlobeLongitude(_cenLon);
_game->getSavedGame()->setGlobeLatitude(_cenLat);
invalidate();
}
/**
* Draws the whole globe, part by part.
*/
void Globe::draw()
{
if (_redraw)
{
cachePolygons();
}
Surface::draw();
drawOcean();
drawLand();
drawRadars();
drawShadow();
drawMarkers();
drawDetail();
drawFlights();
}
/**
* Renders the ocean, shading it according to the time of day.
*/
void Globe::drawOcean()
{
lock();
drawCircle(_cenX+1, _cenY, _radius+20, OCEAN_COLOR);
// ShaderDraw<Ocean>(ShaderSurface(this));
unlock();
}
/**
* Renders the land, taking all the visible world polygons
* and texturing and shading them accordingly.
*/
void Globe::drawLand()
{
Sint16 x[4], y[4];
for (std::list<Polygon*>::iterator i = _cacheLand.begin(); i != _cacheLand.end(); ++i)
{
// Convert coordinates
for (int j = 0; j < (*i)->getPoints(); ++j)
{
x[j] = (*i)->getX(j);
y[j] = (*i)->getY(j);
}
// Apply textures according to zoom and shade
drawTexturedPolygon(x, y, (*i)->getPoints(), _texture->getFrame((*i)->getTexture() + _zoomTexture), 0, 0);
}
}
/**
* Get position of sun from point on globe
* @param lon longitude of position
* @param lat latitude of position
* @return position of sun
*/
Cord Globe::getSunDirection(double lon, double lat) const
{
const double curTime = _game->getSavedGame()->getTime()->getDaylight();
const double rot = curTime * 2*M_PI;
double sun;
if (Options::globeSeasons)
{
const int MonthDays1[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365};
const int MonthDays2[] = {0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366};
int year=_game->getSavedGame()->getTime()->getYear();
int month=_game->getSavedGame()->getTime()->getMonth()-1;
int day=_game->getSavedGame()->getTime()->getDay()-1;
double tm = (double)(( _game->getSavedGame()->getTime()->getHour() * 60
+ _game->getSavedGame()->getTime()->getMinute() ) * 60
+ _game->getSavedGame()->getTime()->getSecond() ) / 86400; //day fraction is also taken into account
double CurDay;
if (year%4 == 0 && !(year%100 == 0 && year%400 != 0))
CurDay = (MonthDays2[month] + day + tm )/366 - 0.219; //spring equinox (start of astronomic year)
else
CurDay = (MonthDays1[month] + day + tm )/365 - 0.219;
if (CurDay<0) CurDay += 1.;
sun = -0.261 * sin(CurDay*2*M_PI);
}
else
sun = 0;
Cord sun_direction(cos(rot+lon), sin(rot+lon)*-sin(lat), sin(rot+lon)*cos(lat));
Cord pole(0, cos(lat), sin(lat));
if (sun>0)
sun_direction *= 1. - sun;
else
sun_direction *= 1. + sun;
pole *= sun;
sun_direction += pole;
double norm = sun_direction.norm();
//norm should be always greater than 0
norm = 1./norm;
sun_direction *= norm;
return sun_direction;
}
void Globe::drawShadow()
{
ShaderMove<Cord> earth = ShaderMove<Cord>(_earthData[_zoom], getWidth(), getHeight());