Method getRandomMapBlock

src/Ruleset/RuleTerrain.cpp:123–148

* Gets a random mapblock within the given constraints. * @param maxsize The maximum size of the mapblock (10 or 20 or 999 - don't care). * @param type Whether this must be a block of a certain type. * @param force Whether to enforce the max size. * @return Pointer to the mapblock. */

 * @return Pointer to the mapblock.
 */
MapBlock* RuleTerrain::getRandomMapBlock(int maxsize, MapBlockType type, bool force)
{
	std::vector<MapBlock*> compliantMapBlocks;

	for (std::vector<MapBlock*>::const_iterator i = _mapBlocks.begin(); i != _mapBlocks.end(); ++i)
	{
		if (((force && (*i)->getSizeX() == maxsize) ||
			(!force && (*i)->getSizeX() <= maxsize)) &&
			((*i)->getType() == type || (*i)->getSubType() == type))
		{
			for (int j = 0; j != (*i)->getRemainingUses(); ++j)
			{
				compliantMapBlocks.push_back((*i));
			}
		}
	}

	if (compliantMapBlocks.empty()) return 0;

	size_t n = RNG::generate(0, compliantMapBlocks.size() - 1);

	if (type == MT_DEFAULT)
		compliantMapBlocks[n]->markUsed();

	return compliantMapBlocks[n];
}

/**
 * Gets a mapblock with a given name.