package co.uk.flansmods.common.guns;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Random;
import co.uk.flansmods.common.InfoType;
import net.minecraft.block.Block;
import net.minecraft.enchantment.EnchantmentProtection;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLivingBase;
import net.minecraft.entity.item.EntityTNTPrimed;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.network.packet.Packet60Explosion;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MathHelper;
import net.minecraft.util.Vec3;
import net.minecraft.world.ChunkPosition;
import net.minecraft.world.Explosion;
import net.minecraft.world.World;
import net.minecraftforge.event.world.BlockEvent.BreakEvent;
public class FlansModExplosion extends Explosion
{
private int boomRadius = 16;
private Random explosionRNG = new Random();
private HashMap<EntityPlayer, Vec3> playerLocations = new HashMap<EntityPlayer, Vec3>();
private World worldObj;
public InfoType type;
public EntityPlayer player;
public List nonProcessedBlockPositions = new ArrayList();
public FlansModExplosion(World w, Entity e, EntityPlayer p, InfoType t, double x, double y, double z, float r, boolean breakBlocks)
{
super(w, e, x, y, z, r);
worldObj = w;
type = t;
player = p;
isFlaming = false;
isSmoking = breakBlocks;
doExplosionA();
doExplosionB(true);
if(!worldObj.isRemote)
{
if (!breakBlocks)
affectedBlockPositions.clear();
Iterator iterator = worldObj.playerEntities.iterator();
while (iterator.hasNext())
{
EntityPlayer entityplayer = (EntityPlayer)iterator.next();
if (entityplayer.getDistanceSq(x, y, z) < 4096.0D)
((EntityPlayerMP)entityplayer).playerNetServerHandler.sendPacketToPlayer(new Packet60Explosion(x, y, z, r, affectedBlockPositions, (Vec3)func_77277_b().get(entityplayer)));
}
}
}
@Override
public void doExplosionA()
{
float f = explosionSize;
HashSet hashset = new HashSet();
double d0;
double d1;
double d2;
for(int i = 0; i < boomRadius; ++i)
{
for(int j = 0; j < boomRadius; ++j)
{
for(int k = 0; k < boomRadius; ++k)
{
if(i == 0 || i == boomRadius - 1 || j == 0 || j == boomRadius - 1 || k == 0 || k == boomRadius - 1)
{
double d3 = (i / (boomRadius - 1.0F) * 2.0F - 1.0F);
double d4 = (j / (boomRadius - 1.0F) * 2.0F - 1.0F);
double d5 = (k / (boomRadius - 1.0F) * 2.0F - 1.0F);
double d6 = Math.sqrt(d3 * d3 + d4 * d4 + d5 * d5);
d3 /= d6;
d4 /= d6;
d5 /= d6;
float f1 = explosionSize * (0.7F + worldObj.rand.nextFloat() * 0.6F);
d0 = explosionX;
d1 = explosionY;
d2 = explosionZ;
for (float f2 = 0.3F; f1 > 0.0F; f1 -= f2 * 0.75F)
{
int l = MathHelper.floor_double(d0);
int i1 = MathHelper.floor_double(d1);
int j1 = MathHelper.floor_double(d2);
int k1 = worldObj.getBlockId(l, i1, j1);
if (k1 > 0)
{
Block block = Block.blocksList[k1];
float f3 = exploder != null ? exploder.getBlockExplosionResistance(this, worldObj, l, i1, j1, block) : block.getExplosionResistance(exploder, worldObj, l, i1, j1, explosionX, explosionY, explosionZ);
f1 -= (f3 + 0.3F) * f2;
}
if (f1 > 0.0F && (exploder == null || exploder.shouldExplodeBlock(this, worldObj, l, i1, j1, k1, f1)))
{
// hashset.add(new ChunkPosition(l, i1, j1));
}
d0 += d3 * f2;
d1 += d4 * f2;
d2 += d5 * f2;
}
}
}
}
}
nonProcessedBlockPositions.addAll(hashset);
explosionSize *= 2.0F;
int i = MathHelper.floor_double(explosionX - explosionSize - 1.0D);
int j = MathHelper.floor_double(explosionX + explosionSize + 1.0D);
int k = MathHelper.floor_double(explosionY - explosionSize - 1.0D);
int l1 = MathHelper.floor_double(explosionY + explosionSize + 1.0D);
int i2 = MathHelper.floor_double(explosionZ - explosionSize - 1.0D);
int j2 = MathHelper.floor_double(explosionZ + explosionSize + 1.0D);
List list = worldObj.getEntitiesWithinAABBExcludingEntity(exploder, AxisAlignedBB.getAABBPool().getAABB(i, k, i2, j, l1, j2));
Vec3 vec3 = worldObj.getWorldVec3Pool().getVecFromPool(explosionX, explosionY, explosionZ);
for (int k2 = 0; k2 < list.size(); ++k2)
{
Entity entity = (Entity)list.get(k2);
double d7 = entity.getDistance(explosionX, explosionY, explosionZ) / explosionSize;
if (d7 <= 1.0D)
{
d0 = entity.posX - explosionX;
d1 = entity.posY + entity.getEyeHeight() - explosionY;
d2 = entity.posZ - explosionZ;
double d8 = MathHelper.sqrt_double(d0 * d0 + d1 * d1 + d2 * d2);
if (d8 != 0.0D)
{
d0 /= d8;
d1 /= d8;
d2 /= d8;
double d9 = worldObj.getBlockDensity(vec3, entity.boundingBox);
double d10 = (1.0D - d7) * d9;
entity.attackEntityFrom(player == null ? DamageSource.setExplosionSource(this) : new EntityDamageSourceGun(type.shortName, entity, player, type), ((int)((d10 * d10 + d10) / 2.0D * 8.0D * explosionSize + 1.0D)));
double d11 = EnchantmentProtection.func_92092_a(entity, d10);
entity.motionX += d0 * d11;
entity.motionY += d1 * d11;
entity.motionZ += d2 * d11;
if (entity instanceof EntityPlayer)
{
playerLocations.put((EntityPlayer)entity, worldObj.getWorldVec3Pool().getVecFromPool(d0 * d10, d1 * d10, d2 * d10));
}
}
}
}
explosionSize = f;
}
/**
* Does the second part of the explosion (sound, particles, drop spawn)
*/
@Override
public void doExplosionB(boolean par1)
{
worldObj.playSoundEffect(explosionX, explosionY, explosionZ, "random.explode", 4.0F, (1.0F + (worldObj.rand.nextFloat() - worldObj.rand.nextFloat()) * 0.2F) * 0.7F);
if (explosionSize >= 2.0F && isSmoking)
{
worldObj.spawnParticle("hugeexplosion", explosionX, explosionY, explosionZ, 1.0D, 0.0D, 0.0D);
}
else
{
worldObj.spawnParticle("largeexplode", explosionX, explosionY, explosionZ, 1.0D, 0.0D, 0.0D);
}
Iterator iterator;
ChunkPosition chunkposition;
int i;
int j;
int k;
int l;
if (isSmoking)
{
iterator = nonProcessedBlockPositions.iterator();
while (iterator.hasNext())
{
chunkposition = (ChunkPosition)iterator.next();
i = chunkposition.x;
j = chunkposition.y;
k = chunkposition.z;
l = worldObj.getBlockId(i, j, k);
if (par1)
{
double d0 = (i + worldObj.rand.nextFloat());
double d1 = (j + worldObj.rand.nextFloat());
double d2 = (k + worldObj.rand.nextFloat());
double d3 = d0 - explosionX;
double d4 = d1 - explosionY;
double d5 = d2 - explosionZ;
double d6 = MathHelper.sqrt_double(d3 * d3 + d4 * d4 + d5 * d5);
d3 /= d6;
d4 /= d6;
d5 /= d6;
double d7 = 0.5D / (d6 / explosionSize + 0.1D);
d7 *= (worldObj.rand.nextFloat() * worldObj.rand.nextFloat() + 0.3F);
d3 *= d7;
d4 *= d7;
d5 *= d7;
worldObj.spawnParticle("explode", (d0 + explosionX * 1.0D) / 2.0D, (d1 + explosionY * 1.0D) / 2.0D, (d2 + explosionZ * 1.0D) / 2.0D, d3, d4, d5);
worldObj.spawnParticle("smoke", d0, d1, d2, d3, d4, d5);
}
if (l > 0)
{
Block block = Block.blocksList[l];
BreakEvent breakEvent = new BreakEvent(i, j, k, worldObj, block, worldObj.getBlockMetadata(i, j, k), player);
if(!breakEvent.isCanceled())
{
if (block.canDropFromExplosion(this))
{
block.dropBlockAsItemWithChance(worldObj, i, j, k, worldObj.getBlockMetadata(i, j, k), 1.0F / explosionSize, 0);
}
block.onBlockExploded(worldObj, i, j, k, this);
affectedBlockPositions.add(chunkposition);
}
}
}
}
if (isFlaming)
{
iterator = nonProcessedBlockPositions.iterator();
while (iterator.hasNext())
{
chunkposition = (ChunkPosition)iterator.next();
i = chunkposition.x;
j = chunkposition.y;
k = chunkposition.z;
l = worldObj.getBlockId(i, j, k);
int i1 = worldObj.getBlockId(i, j - 1, k);
if (l == 0 && Block.opaqueCubeLookup[i1] && explosionRNG.nextInt(3) == 0)
{
worldObj.setBlock(i, j, k, Block.fire.blockID);
}
}
}
}
@Override
public Map func_77277_b()
{
return playerLocations;
}
public EntityLivingBase func_94613_c()
{
return exploder == null ? null : (exploder instanceof EntityTNTPrimed ? ((EntityTNTPrimed)exploder).getTntPlacedBy() : (exploder instanceof EntityLivingBase ? (EntityLivingBase)exploder : null));
}
}
Повторюсь, но проблем не будет до тех пор, пока вы не передаете нулевые значения. Что само собой вызовет NPE в каком нибудь плагине. Это вопрос реализации с вашей стороны. Просто учтите это на будущие 
