1 files changed, 72 insertions, 0 deletions
diff --git a/source/MobSpawner.h b/source/MobSpawner.h
new file mode 100644
index 000000000..bb9e95172
--- /dev/null
+++ b/source/MobSpawner.h
@@ -0,0 +1,72 @@
+
+#pragma once
+
+#include <set>
+#include "BlockID.h"
+#include "ChunkDef.h"
+#include "FastRandom.h"
+#include "Mobs/Monster.h" //this is a side-effect of keeping Mobfamily inside Monster class. I'd prefer to keep both (Mobfamily and Monster) inside a "Monster" namespace MG TODO : do it
+
+class cChunk;
+
+
+// This class is used to determine wich monster can be spawned on wich place
+// it is essentially static (f.i. Squids spawn in water, Zombie spawn in dark places)
+// but it also has dynamic part depending on the world.ini
+class cMobSpawner
+{
+public :
+	// constructor
+	// a_MobFamily is the Family of mobs that this spawner will spawn
+	// a_AllowedTypes is the set of types allowed for mobs it will spawn. Empty set
+	// would result in no spawn at all
+	// Allowed mobs thah are not of the right Family will not be include (no warning)
+	cMobSpawner(cMonster::eFamily MobFamily, const std::set<cMonster::eType>& a_AllowedTypes);
+
+	// Check if specified block can be a Pack center for this spawner
+	bool CheckPackCenter(BLOCKTYPE a_BlockType);
+
+	// Try to create a monster here
+	// if this is the first of a Pack : determine the type of monster
+	// BlockType & BlockMeta are use to know what kind of Mob can Spawn here
+	// MaxPackSize is set to the maximal size for a pack this type of mob
+	cMonster* TryToSpawnHere(BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, BLOCKTYPE a_BlockType_below, NIBBLETYPE a_BlockMeta_below, BLOCKTYPE a_BlockType_above, NIBBLETYPE a_BlockMeta_above, EMCSBiome a_Biome, int a_Level, int& a_MaxPackSize);
+
+	// mark the beginning of a new Pack
+	// all mobs of the same Pack are the same type
+	void NewPack();
+
+	// return true if there is at least one allowed type
+	bool CanSpawnSomething();
+
+	typedef const std::set<cMonster*> tSpawnedContainer;
+	tSpawnedContainer& getSpawned();
+
+protected : 
+	// return true if specified type of mob can spawn on specified block
+	bool CanSpawnHere(cMonster::eType a_MobType, BLOCKTYPE a_BlockType, NIBBLETYPE a_BlockMeta, BLOCKTYPE a_BlockType_below, NIBBLETYPE a_BlockMeta_below, BLOCKTYPE a_BlockType_above, NIBBLETYPE a_BlockMeta_above, EMCSBiome a_Biome, int a_Level);
+
+	// return a random type that can spawn on specified biome.
+	// returns E_ENTITY_TYPE_DONOTUSE if none is possible
+	cMonster::eType ChooseMobType(EMCSBiome a_Biome);
+
+	// add toAdd inside toAddIn, if toAdd is in m_AllowedTypes
+	void addIfAllowed(cMonster::eType toAdd, std::set<cMonster::eType>& toAddIn);
+
+protected : 
+	cMonster::eFamily m_MonsterFamily;
+	std::set<cMonster::eType> m_AllowedTypes;
+	bool m_NewPack;
+	cMonster::eType m_MobType;
+	std::set<cMonster*> m_Spawned;
+	cFastRandom m_Random;
+
+public : 
+	typedef const std::set<cMonster::eType> tMobTypes; // MG TODO : maybe relocate all those statics set/maps in the same place ?
+	static tMobTypes& m_MobTypes();
+
+protected : 
+	static tMobTypes initMobTypesBeforeCx11();
+
+
+};