src/reflowscan.h

   1 /*
   2 Minetest
   3 Copyright (C) 2016 MillersMan <millersman@users.noreply.github.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #pragma once
  21
  22 #include "util/container.h"
  23 #include "irrlichttypes_bloated.h"
  24
  25 class NodeDefManager;
  26 class Map;
  27 class MapBlock;
  28
  29 class ReflowScan {
  30 public:
  31         ReflowScan(Map *map, const NodeDefManager *ndef);
  32         void scan(MapBlock *block, UniqueQueue<v3s16> *liquid_queue);
  33
  34 private:
  35         MapBlock *lookupBlock(int x, int y, int z);
  36         bool isLiquidFlowableTo(int x, int y, int z);
  37         bool isLiquidHorizontallyFlowable(int x, int y, int z);
  38         void scanColumn(int x, int z);
  39
  40 private:
  41         Map *m_map = nullptr;
  42         const NodeDefManager *m_ndef = nullptr;
  43         v3s16 m_block_pos, m_rel_block_pos;
  44         UniqueQueue<v3s16> *m_liquid_queue = nullptr;
  45         MapBlock *m_lookup[3 * 3 * 3];
  46         u32 m_lookup_state_bitset;
  47 };