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.
20 #ifndef MESH_GENERATOR_THREAD_HEADER
21 #define MESH_GENERATOR_THREAD_HEADER
25 #include "mapblock_mesh.h"
26 #include "threading/mutex_auto_lock.h"
27 #include "util/thread.h"
29 struct CachedMapBlockData
31 v3s16 p = v3s16(-1337, -1337, -1337);
32 MapNode *data = nullptr; // A copy of the MapBlock's data member
33 int refcount_from_queue = 0;
34 std::time_t last_used_timestamp = std::time(0);
36 CachedMapBlockData() {}
37 ~CachedMapBlockData();
40 struct QueuedMeshUpdate
42 v3s16 p = v3s16(-1337, -1337, -1337);
43 bool ack_block_to_server = false;
47 MeshMakeData *data = nullptr; // This is generated in MeshUpdateQueue::pop()
54 A thread-safe queue of mesh update tasks and a cache of MapBlock data
61 SKIP_UPDATE_IF_ALREADY_CACHED,
65 MeshUpdateQueue(Client *client);
69 // Caches the block at p and its neighbors (if needed) and queues a mesh
70 // update for the block at p
71 void addBlock(Map *map, v3s16 p, bool ack_block_to_server, bool urgent);
73 // Returned pointer must be deleted
74 // Returns NULL if queue is empty
75 QueuedMeshUpdate *pop();
79 MutexAutoLock lock(m_mutex);
80 return m_queue.size();
85 std::vector<QueuedMeshUpdate *> m_queue;
86 std::set<v3s16> m_urgents;
87 std::map<v3s16, CachedMapBlockData *> m_cache;
90 // TODO: Add callback to update these when g_settings changes
91 bool m_cache_enable_shaders;
92 bool m_cache_use_tangent_vertices;
93 bool m_cache_smooth_lighting;
94 int m_meshgen_block_cache_size;
96 CachedMapBlockData *cacheBlock(Map *map, v3s16 p, UpdateMode mode,
97 size_t *cache_hit_counter = NULL);
98 CachedMapBlockData *getCachedBlock(const v3s16 &p);
99 void fillDataFromMapBlockCache(QueuedMeshUpdate *q);
103 struct MeshUpdateResult
105 v3s16 p = v3s16(-1338, -1338, -1338);
106 MapBlockMesh *mesh = nullptr;
107 bool ack_block_to_server = false;
109 MeshUpdateResult() {}
112 class MeshUpdateThread : public UpdateThread
115 MeshUpdateThread(Client *client);
117 // Caches the block at p and its neighbors (if needed) and queues a mesh
118 // update for the block at p
119 void updateBlock(Map *map, v3s16 p, bool ack_block_to_server, bool urgent);
121 v3s16 m_camera_offset;
122 MutexedQueue<MeshUpdateResult> m_queue_out;
125 MeshUpdateQueue m_queue_in;
127 // TODO: Add callback to update these when g_settings changes
128 int m_generation_interval;
131 virtual void doUpdate();