Method draw

src/Battlescape/Map.cpp:164–204

* Draws the whole map, part by part. */

 * Draws the whole map, part by part.
 */
void Map::draw()
{
	if (!_redraw)
	{
		return;
	}
	Surface::draw();
	Tile *t;

	_projectileInFOV = _save->getDebugMode();
	if (_projectile)
	{
		t = _save->getTile(Position(_projectile->getPosition(0).x/16, _projectile->getPosition(0).y/16, _projectile->getPosition(0).z/24));
		if (_save->getSide() == FACTION_PLAYER || (t && t->getVisible()))
		{
			_projectileInFOV = true;
		}
	}
	_explosionInFOV = _save->getDebugMode();
	if (!_explosions.empty())
	{
		for (std::list<Explosion*>::iterator i = _explosions.begin(); i != _explosions.end(); ++i)
		{
			t = _save->getTile(Position((*i)->getPosition().x/16, (*i)->getPosition().y/16, (*i)->getPosition().z/24));
			if (t && ((*i)->isBig() || t->getVisible()))
			{
				_explosionInFOV = true;
				break;
			}
		}
	}

	if ((_save->getSelectedUnit() && _save->getSelectedUnit()->getVisible()) || _unitDying || _save->getSelectedUnit() == 0 || _save->getDebugMode() || _projectileInFOV || _explosionInFOV)
	{
		drawTerrain(this);
	}
	else
	{
		_message->blit(this);
	}
}

/**
 * Replaces a certain amount of colors in the surface's palette.