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/*
Minetest
Copyright (C) 2010-2013 kwolekr, Ryan Kwolek <kwolekr@minetest.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#pragma once
#include <map>
#include <mutex>
#include "network/networkprotocol.h"
#include "irr_v3d.h"
#include "util/container.h"
#include "mapgen/mapgen.h" // for MapgenParams
#include "map.h"
#define BLOCK_EMERGE_ALLOW_GEN (1 << 0)
#define BLOCK_EMERGE_FORCE_QUEUE (1 << 1)
#define EMERGE_DBG_OUT(x) { \
if (enable_mapgen_debug_info) \
infostream << "EmergeThread: " x << std::endl; \
}
class EmergeThread;
class INodeDefManager;
class Settings;
class BiomeManager;
class OreManager;
class DecorationManager;
class SchematicManager;
class Server;
// Structure containing inputs/outputs for chunk generation
struct BlockMakeData {
MMVManip *vmanip = nullptr;
u64 seed = 0;
v3s16 blockpos_min;
v3s16 blockpos_max;
v3s16 blockpos_requested;
UniqueQueue<v3s16> transforming_liquid;
INodeDefManager *nodedef = nullptr;
BlockMakeData() = default;
~BlockMakeData() { delete vmanip; }
};
// Result from processing an item on the emerge queue
enum EmergeAction {
EMERGE_CANCELLED,
EMERGE_ERRORED,
EMERGE_FROM_MEMORY,
EMERGE_FROM_DISK,
EMERGE_GENERATED,
};
// Callback
typedef void (*EmergeCompletionCallback)(
v3s16 blockpos, EmergeAction action, void *param);
typedef std::vector<
std::pair<
EmergeCompletionCallback,
void *
>
> EmergeCallbackList;
struct BlockEmergeData {
u16 peer_requested;
u16 flags;
EmergeCallbackList callbacks;
};
class EmergeManager {
public:
INodeDefManager *ndef;
bool enable_mapgen_debug_info;
// Generation Notify
u32 gen_notify_on = 0;
std::set<u32> gen_notify_on_deco_ids;
// Parameters passed to mapgens owned by ServerMap
// TODO(hmmmm): Remove this after mapgen helper methods using them
// are moved to ServerMap
MapgenParams *mgparams;
// Hackish workaround:
// For now, EmergeManager must hold onto a ptr to the Map's setting manager
// since the Map can only be accessed through the Environment, and the
// Environment is not created until after script initialization.
MapSettingsManager *map_settings_mgr;
// Managers of various map generation-related components
BiomeManager *biomemgr;
OreManager *oremgr;
DecorationManager *decomgr;
SchematicManager *schemmgr;
// Methods
EmergeManager(Server *server);
~EmergeManager();
DISABLE_CLASS_COPY(EmergeManager);
bool initMapgens(MapgenParams *mgparams);
void startThreads();
void stopThreads();
bool isRunning();
bool enqueueBlockEmerge(
session_t peer_id,
v3s16 blockpos,
bool allow_generate,
bool ignore_queue_limits=false);
bool enqueueBlockEmergeEx(
v3s16 blockpos,
session_t peer_id,
u16 flags,
EmergeCompletionCallback callback,
void *callback_param);
v3s16 getContainingChunk(v3s16 blockpos);
Mapgen *getCurrentMapgen();
// Mapgen helpers methods
int getSpawnLevelAtPoint(v2s16 p);
int getGroundLevelAtPoint(v2s16 p);
bool isBlockUnderground(v3s16 blockpos);
static v3s16 getContainingChunk(v3s16 blockpos, s16 chunksize);
private:
std::vector<Mapgen *> m_mapgens;
std::vector<EmergeThread *> m_threads;
bool m_threads_active = false;
std::mutex m_queue_mutex;
std::map<v3s16, BlockEmergeData> m_blocks_enqueued;
std::unordered_map<u16, u16> m_peer_queue_count;
u16 m_qlimit_total;
u16 m_qlimit_diskonly;
u16 m_qlimit_generate;
// Requires m_queue_mutex held
EmergeThread *getOptimalThread();
bool pushBlockEmergeData(
v3s16 pos,
u16 peer_requested,
u16 flags,
EmergeCompletionCallback callback,
void *callback_param,
bool *entry_already_exists);
bool popBlockEmergeData(v3s16 pos, BlockEmergeData *bedata);
friend class EmergeThread;
};
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