1 files changed, 277 insertions, 0 deletions

diff --git a/source/MobSpawner.cpp b/source/MobSpawner.cpp
new file mode 100644
index 000000000..19e3739cd
--- /dev/null
+++ b/source/MobSpawner.cpp
@@ -0,0 +1,277 @@
+
+#include "Globals.h"  // NOTE: MSVC stupidness requires this to be the same across all modules
+
+#include "MobSpawner.h"
+#include "MobTypesManager.h"
+#include "Mobs/Monster.h"
+#include "Mobs/IncludeAllMonsters.h"
+
+
+cMobSpawner::tMobTypes& cMobSpawner::m_MobTypes()
+{
+	static tMobTypes* value = new tMobTypes(initMobTypesBeforeCx11());
+	return *value;
+}
+
+cMobSpawner::tMobTypes cMobSpawner::initMobTypesBeforeCx11()
+{
+	std::set<cMonster::eType> toReturn;
+	toReturn.insert(cMonster::mtCreeper);
+	toReturn.insert(cMonster::mtSkeleton);
+	toReturn.insert(cMonster::mtSpider);
+	toReturn.insert(cMonster::mtGiant);
+	toReturn.insert(cMonster::mtZombie);
+	toReturn.insert(cMonster::mtSlime);
+	toReturn.insert(cMonster::mtGhast);
+	toReturn.insert(cMonster::mtZombiePigman);
+	toReturn.insert(cMonster::mtEnderman);
+	toReturn.insert(cMonster::mtCaveSpider);
+	toReturn.insert(cMonster::mtSilverfish);
+	toReturn.insert(cMonster::mtBlaze);
+	toReturn.insert(cMonster::mtMagmaCube);
+	toReturn.insert(cMonster::mtEnderDragon);
+	toReturn.insert(cMonster::mtWither);
+	toReturn.insert(cMonster::mtBat);
+	toReturn.insert(cMonster::mtWitch);
+	toReturn.insert(cMonster::mtPig);
+	toReturn.insert(cMonster::mtSheep);
+	toReturn.insert(cMonster::mtCow);
+	toReturn.insert(cMonster::mtChicken);
+	toReturn.insert(cMonster::mtSquid);
+	toReturn.insert(cMonster::mtWolf);
+	toReturn.insert(cMonster::mtMooshroom);
+	toReturn.insert(cMonster::mtSnowGolem);
+	toReturn.insert(cMonster::mtOcelot);
+	toReturn.insert(cMonster::mtIronGolem);
+	toReturn.insert(cMonster::mtVillager);
+	return toReturn;
+}
+
+
+cMobSpawner::cMobSpawner(cMonster::eFamily a_MonsterFamily,const std::set<cMonster::eType>& a_AllowedTypes) :
+	m_MonsterFamily(a_MonsterFamily),
+	m_NewPack(true),
+	m_MobType(cMonster::mtInvalidType)
+{
+	for (std::set<cMonster::eType>::const_iterator itr = a_AllowedTypes.begin(); itr != a_AllowedTypes.end(); itr++)
+	{
+		if (cMobTypesManager::getFamilyFromType(*itr) == a_MonsterFamily)
+		{
+			m_AllowedTypes.insert(*itr);
+		}
+	}
+}
+
+bool cMobSpawner::CheckPackCenter(BLOCKTYPE a_BlockType)
+{
+	// Packs of non-water mobs can only be centered on an air block
+	// Packs of water mobs can only be centered on a water block
+	if (m_MonsterFamily == cMonster::mfWater)
+	{
+		return IsBlockWater(a_BlockType);
+	}
+	else
+	{
+		return a_BlockType == E_BLOCK_AIR;
+	}
+}
+
+void cMobSpawner::addIfAllowed(cMonster::eType toAdd, std::set<cMonster::eType>& toAddIn)
+{
+	std::set<cMonster::eType>::iterator itr = m_AllowedTypes.find(toAdd);
+	if (itr != m_AllowedTypes.end())
+	{
+		toAddIn.insert(toAdd);
+	}
+}
+
+cMonster::eType cMobSpawner::ChooseMobType(EMCSBiome a_Biome)
+{
+	std::set<cMonster::eType> allowedMobs;
+
+	if (a_Biome == biMushroomIsland || a_Biome == biMushroomShore)
+	{
+		addIfAllowed(cMonster::mtMooshroom, allowedMobs);
+	}
+	else if (a_Biome == biNether)
+	{
+		addIfAllowed(cMonster::mtGhast, allowedMobs);
+		addIfAllowed(cMonster::mtZombiePigman, allowedMobs);
+		addIfAllowed(cMonster::mtMagmaCube, allowedMobs);
+	}
+	/*else if (a_Biome == biEnder)	MG TODO : figure out what are the biomes of the ender
+	{
+		addIfAllowed(cMonster::mtEnderman, allowedMobs);
+	}*/
+	else
+	{
+		addIfAllowed(cMonster::mtBat, allowedMobs);
+		addIfAllowed(cMonster::mtSpider, allowedMobs);
+		addIfAllowed(cMonster::mtZombie, allowedMobs);
+		addIfAllowed(cMonster::mtSkeleton, allowedMobs);
+		addIfAllowed(cMonster::mtCreeper, allowedMobs);
+		addIfAllowed(cMonster::mtSquid, allowedMobs);
+		
+		if (a_Biome != biDesert && a_Biome != biBeach && a_Biome != biOcean)
+		{
+			addIfAllowed(cMonster::mtSheep, allowedMobs);
+			addIfAllowed(cMonster::mtPig, allowedMobs);
+			addIfAllowed(cMonster::mtCow, allowedMobs);
+			addIfAllowed(cMonster::mtChicken, allowedMobs);
+			addIfAllowed(cMonster::mtEnderman, allowedMobs);
+			addIfAllowed(cMonster::mtSlime, allowedMobs);	// MG TODO : much more complicated rule
+			
+			if (a_Biome == biForest || a_Biome == biForestHills || a_Biome == biTaiga  || a_Biome == biTaigaHills)
+			{
+				addIfAllowed(cMonster::mtWolf, allowedMobs);
+			}
+			else if (a_Biome == biJungle || a_Biome == biJungleHills)
+			{
+				addIfAllowed(cMonster::mtOcelot, allowedMobs);
+			}
+		}
+	}
+
+	int allowedMobsSize = allowedMobs.size();
+	if (allowedMobsSize > 0)
+	{
+		std::set<cMonster::eType>::iterator itr = allowedMobs.begin();
+		int iRandom = m_Random.NextInt(allowedMobsSize,a_Biome);
+
+		for(int i = 0; i < iRandom; i++)
+		{
+			itr++;
+		}
+
+		return *itr;
+	}
+	return cMonster::mtInvalidType;
+}
+
+
+bool cMobSpawner::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)
+{
+	bool toReturn = false;
+	std::set<cMonster::eType>::iterator itr = m_AllowedTypes.find(a_MobType);
+	if (itr != m_AllowedTypes.end())
+	{
+		// MG TODO : find a nicer paging
+		if (a_MobType == cMonster::mtSquid)
+		{
+			toReturn = (
+				IsBlockLiquid(a_BlockType) &&
+				a_Level >= 45 &&
+				a_Level <= 62
+			);
+		}
+		else if (a_MobType == cMonster::mtBat)
+		{
+			toReturn = a_Level <= 60; // MG TODO  : find a real rule
+		}
+		else
+		{
+			if (
+				a_BlockType == E_BLOCK_AIR &&
+				a_BlockType_above == E_BLOCK_AIR &&
+				! (g_BlockTransparent[a_BlockType_below])
+				)
+			{
+				if (a_MobType == cMonster::mtChicken || a_MobType == cMonster::mtPig || a_MobType == cMonster::mtCow || a_MobType == cMonster::mtSheep)
+				{
+					LOGD("Trying to spawn an animal");
+					toReturn = (
+						a_BlockType_below == E_BLOCK_GRASS /*&& // MG TODO
+						a_LightLevel >= 9 */
+						);
+				}
+				else if (a_MobType == cMonster::mtOcelot)
+				{
+					toReturn = (
+						a_Level >= 62 &&
+						(
+							a_BlockType_below == E_BLOCK_GRASS ||
+							a_BlockType_below == E_BLOCK_LEAVES
+						) &&
+						m_Random.NextInt(3,a_Biome) != 0
+						);
+				}
+				else if (a_MobType == cMonster::mtCreeper || a_MobType == cMonster::mtSkeleton || a_MobType == cMonster::mtZombie || a_MobType == cMonster::mtSpider || a_MobType == cMonster::mtEnderman || a_MobType == cMonster::mtZombiePigman)
+				{
+					toReturn = true /*a_LightLevel <= 7 MG TODO*/;
+					/*if (a_SunLight) MG TODO 
+					{
+						if (m_Random.NextInt(2,a_Biome) != 0)
+						{
+							toReturn = false;
+						}
+					}*/
+				}
+				else if (a_MobType == cMonster::mtSlime)
+				{
+					toReturn = a_Level <= 40;
+					// MG TODO : much more complicated rules		
+				}
+				else if (a_MobType == cMonster::mtGhast)
+				{
+					toReturn = m_Random.NextInt(20,a_Biome) == 0;
+				}
+				else
+				{
+					LOGD("MG TODO : check I've got a Rule to write for type %d",a_MobType);
+					toReturn = true;
+				}
+			}
+		}
+	}
+	return toReturn;
+}
+
+
+cMonster* cMobSpawner::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)
+{
+	cMonster* toReturn = NULL;
+	if (m_NewPack)
+	{
+		m_MobType = ChooseMobType(a_Biome);
+		if (m_MobType == cMonster::mtInvalidType)
+		{
+			return toReturn;
+		}
+		if (m_MobType == cMonster::mtWolf)
+		{
+			a_MaxPackSize = 8;
+		}
+		else if (m_MobType == cMonster::mtGhast)
+		{
+			a_MaxPackSize = 1;
+		}
+		m_NewPack = false;
+	}
+
+	
+	if (CanSpawnHere(m_MobType, a_BlockType, a_BlockMeta, a_BlockType_below, a_BlockMeta_below, a_BlockType_above, a_BlockMeta_above, a_Biome, a_Level))
+	{
+		cMonster* newMob = cMobTypesManager::NewMonsterFromType(m_MobType);
+		if (newMob)
+		{
+			m_Spawned.insert(newMob);
+		}
+		toReturn = newMob;
+	}
+	return toReturn;
+}
+
+void cMobSpawner::NewPack()
+{
+	m_NewPack = true;
+}
+
+cMobSpawner::tSpawnedContainer& cMobSpawner::getSpawned()
+{
+	return m_Spawned;
+}
+
+bool cMobSpawner::CanSpawnSomething()
+{
+	return m_AllowedTypes.size() > 0;
+}