Method calculateVisionToTerrain

game/state/battle/battleunit.cpp:357–418

}

void BattleUnit::calculateVisionToTerrain(GameState &state)
{
	auto &battle = *state.current_battle;

	static const int lazyLimit = 5 * 9;
	std::set<int> discoveredBlocks;
	auto &visibleBlocks = battle.visibleBlocks.at(owner);

	// Update unit's vision of los block he's standing in
	{
		auto idx = battle.getLosBlockID(position.x, position.y, position.z);
		if (!visibleBlocks.at(idx))
		{
			visibleBlocks.at(idx) = true;
			discoveredBlocks.insert(idx);
		}
	}

	auto blocksToCheck = std::set<int>();
	int totalChecks = 0;
	// Calc los to other blocks we haven't seen yet
	for (int idx = 0; idx < (int)visibleBlocks.size(); idx++)
	{
		// Block already seen
		if (visibleBlocks.at(idx))
		{
			continue;
		}

		totalChecks++;
		blocksToCheck.insert(idx);
		if (totalChecks >= lazyLimit)
		{
			break;
		}
	}

	if (totalChecks >= lazyLimit)
	{
		calculateVisionToLosBlocksLazy(state, discoveredBlocks);
	}
	else
	{
		calculateVisionToLosBlocks(state, discoveredBlocks, blocksToCheck);
	}

	// Reveal all discovered blocks
	for (auto &idx : discoveredBlocks)
	{
		auto l = battle.losBlocks.at(idx);
		for (int x = l->start.x; x < l->end.x; x++)
		{
			for (int y = l->start.y; y < l->end.y; y++)
			{
				for (int z = l->start.z; z < l->end.z; z++)
				{
					battle.setVisible(owner, x, y, z);
				}