3 Copyright (C) 2013, 2017 celeron55, Perttu Ahola <celeron55@gmail.com>
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.
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.
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.
24 #include <unordered_map>
25 #include <unordered_set>
26 #include "mapblock_mesh.h"
27 #include "threading/mutex_auto_lock.h"
28 #include "util/thread.h"
30 struct CachedMapBlockData
32 v3s16 p = v3s16(-1337, -1337, -1337);
33 MapNode *data = nullptr; // A copy of the MapBlock's data member
34 int refcount_from_queue = 0;
35 std::time_t last_used_timestamp = std::time(0);
37 CachedMapBlockData() = default;
38 ~CachedMapBlockData();
41 struct QueuedMeshUpdate
43 v3s16 p = v3s16(-1337, -1337, -1337);
44 bool ack_block_to_server = false;
47 MeshMakeData *data = nullptr; // This is generated in MeshUpdateQueue::pop()
50 QueuedMeshUpdate() = default;
55 A thread-safe queue of mesh update tasks and a cache of MapBlock data
62 SKIP_UPDATE_IF_ALREADY_CACHED,
66 MeshUpdateQueue(Client *client);
70 // Caches the block at p and its neighbors (if needed) and queues a mesh
71 // update for the block at p
72 bool addBlock(Map *map, v3s16 p, bool ack_block_to_server, bool urgent);
74 // Returned pointer must be deleted
75 // Returns NULL if queue is empty
76 QueuedMeshUpdate *pop();
80 MutexAutoLock lock(m_mutex);
81 return m_queue.size();
86 std::vector<QueuedMeshUpdate *> m_queue;
87 std::unordered_set<v3s16> m_urgents;
88 std::unordered_map<v3s16, CachedMapBlockData *> m_cache;
89 u64 m_next_cache_cleanup; // milliseconds
92 // TODO: Add callback to update these when g_settings changes
93 bool m_cache_enable_shaders;
94 bool m_cache_smooth_lighting;
95 int m_meshgen_block_cache_size;
97 CachedMapBlockData *cacheBlock(Map *map, v3s16 p, UpdateMode mode,
98 size_t *cache_hit_counter = NULL);
99 CachedMapBlockData *getCachedBlock(const v3s16 &p);
100 void fillDataFromMapBlockCache(QueuedMeshUpdate *q);
104 struct MeshUpdateResult
106 v3s16 p = v3s16(-1338, -1338, -1338);
107 MapBlockMesh *mesh = nullptr;
108 bool ack_block_to_server = false;
111 MeshUpdateResult() = default;
114 class MeshUpdateThread : public UpdateThread
117 MeshUpdateThread(Client *client);
119 // Caches the block at p and its neighbors (if needed) and queues a mesh
120 // update for the block at p
121 void updateBlock(Map *map, v3s16 p, bool ack_block_to_server, bool urgent,
122 bool update_neighbors = false);
124 v3s16 m_camera_offset;
125 MutexedQueue<MeshUpdateResult> m_queue_out;
128 MeshUpdateQueue m_queue_in;
130 // TODO: Add callback to update these when g_settings changes
131 int m_generation_interval;
134 virtual void doUpdate();