C++ (Cpp) MapData示例

/**
 * Draw the minimap
 */
void MiniMapView::draw()
{
	int _startX = _camera->getCenterPosition().x - ((getWidth() / CELL_WIDTH) / 2);
	int _startY = _camera->getCenterPosition().y - ((getHeight() / CELL_HEIGHT) / 2);

	InteractiveSurface::draw();
	if(!_set)
	{
		return;
	}
	SDL_Rect current;
	current.x = current.y = 0;
	current.w = getWidth ();
	current.h = getHeight ();
	drawRect(&current, 0);
	this->lock();
	for (int lvl = 0; lvl <= _camera->getCenterPosition().z; lvl++)
	{
		int py = _startY;
		for (int y = Surface::getY(); y < getHeight () + Surface::getY(); y += CELL_HEIGHT)
		{
			int px = _startX;
			for (int x = Surface::getX(); x < getWidth () + Surface::getX(); x += CELL_WIDTH)
			{
				MapData * data = 0;
				Tile * t = 0;
				Position p (px, py, lvl);
				t = _battleGame->getTile(p);
				if (!t || !t->isDiscovered(2))
				{
					px++;
					continue;
				}
				for(int i = 0; i < 4; i++)
				{
					data = t->getMapData(i);

					Surface * s = 0;
					if(data && data->getMiniMapIndex())
					{
						s = _set->getFrame (data->getMiniMapIndex()+35);
					}
					if(s)
					{
						s->blitNShade(this, x, y, t->getShade());
					}
				}

				// alive units
				if (t->getUnit() && t->getUnit()->getVisible())
				{
					int frame = t->getUnit()->getMiniMapSpriteIndex();
					int size = t->getUnit()->getArmor()->getSize();
					frame += (t->getPosition().y - t->getUnit()->getPosition().y) * size;
					frame += t->getPosition().x - t->getUnit()->getPosition().x;
					frame += _frame * size * size;
					Surface * s = _set->getFrame(frame);
					s->blitNShade(this, x, y, 0);
				}
				// perhaps (at least one) item on this tile?
				if (!t->getInventory()->empty())
				{
					int frame = 9 + _frame;
					Surface * s = _set->getFrame(frame);
					s->blitNShade(this, x, y, 0);
				}

				px++;
			}
			py++;
		}
	}
	this->unlock();
	int centerX = getWidth() / 2;
	int centerY = getHeight() / 2;
	Uint8 color = 1 + _frame * 3;
	int xOffset = CELL_WIDTH / 2;
	int yOffset = CELL_HEIGHT / 2;
	drawLine(centerX - CELL_WIDTH, centerY - CELL_HEIGHT,
		 centerX - xOffset, centerY - yOffset,
		 color); // top left
	drawLine(centerX + xOffset, centerY - yOffset,
		 centerX + CELL_WIDTH, centerY - CELL_HEIGHT,
		 color); // top right
	drawLine(centerX - CELL_WIDTH, centerY + CELL_HEIGHT,
		 centerX - xOffset, centerY + yOffset,
		 color); // bottom left
	drawLine(centerX + CELL_WIDTH, centerY + CELL_HEIGHT,
		 centerX + xOffset, centerY + yOffset,
		 color); //bottom right
}