package net.minecraft.world;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Random;
import net.minecraft.block.Block;
import net.minecraft.entity.Entity;
import net.minecraft.init.Blocks;
import net.minecraft.util.ChunkCoordinates;
import net.minecraft.util.Direction;
import net.minecraft.util.LongHashMap;
import net.minecraft.util.MathHelper;
public class Teleporter
{
private final WorldServer worldServerInstance;
/** A private Random() function in Teleporter */
private final Random random;
/** Stores successful portal placement locations for rapid lookup. */
private final LongHashMap destinationCoordinateCache = new LongHashMap();
/**
* A list of valid keys for the destinationCoordainteCache. These are based on the X & Z of the players initial
* location.
*/
private final List destinationCoordinateKeys = new ArrayList();
private static final String __OBFID = "CL_00000153";
public Teleporter(WorldServer worldIn)
{
this.worldServerInstance = worldIn;
this.random = new Random(worldIn.getSeed());
}
/**
* Place an entity in a nearby portal, creating one if necessary.
*/
public void placeInPortal(Entity p_77185_1_, double p_77185_2_, double p_77185_4_, double p_77185_6_, float p_77185_8_)
{
if (this.worldServerInstance.provider.dimensionId != 1)
{
if (!this.placeInExistingPortal(p_77185_1_, p_77185_2_, p_77185_4_, p_77185_6_, p_77185_8_))
{
this.makePortal(p_77185_1_);
this.placeInExistingPortal(p_77185_1_, p_77185_2_, p_77185_4_, p_77185_6_, p_77185_8_);
}
}
else
{
int i = MathHelper.floor_double(p_77185_1_.posX);
int j = MathHelper.floor_double(p_77185_1_.posY) - 1;
int k = MathHelper.floor_double(p_77185_1_.posZ);
byte b0 = 1;
byte b1 = 0;
for (int l = -2; l <= 2; ++l)
{
for (int i1 = -2; i1 <= 2; ++i1)
{
for (int j1 = -1; j1 < 3; ++j1)
{
int k1 = i + i1 * b0 + l * b1;
int l1 = j + j1;
int i2 = k + i1 * b1 - l * b0;
boolean flag = j1 < 0;
this.worldServerInstance.setBlock(k1, l1, i2, flag ? Blocks.obsidian : Blocks.air);
}
}
}
p_77185_1_.setLocationAndAngles((double)i, (double)j, (double)k, p_77185_1_.rotationYaw, 0.0F);
p_77185_1_.motionX = p_77185_1_.motionY = p_77185_1_.motionZ = 0.0D;
}
}
/**
* Place an entity in a nearby portal which already exists.
*/
public boolean placeInExistingPortal(Entity p_77184_1_, double p_77184_2_, double p_77184_4_, double p_77184_6_, float p_77184_8_)
{
short short1 = 128;
double d3 = -1.0D;
int i = 0;
int j = 0;
int k = 0;
int l = MathHelper.floor_double(p_77184_1_.posX);
int i1 = MathHelper.floor_double(p_77184_1_.posZ);
long j1 = ChunkCoordIntPair.chunkXZ2Int(l, i1);
boolean flag = true;
double d7;
int l3;
if (this.destinationCoordinateCache.containsItem(j1))
{
Teleporter.PortalPosition portalposition = (Teleporter.PortalPosition)this.destinationCoordinateCache.getValueByKey(j1);
d3 = 0.0D;
i = portalposition.posX;
j = portalposition.posY;
k = portalposition.posZ;
portalposition.lastUpdateTime = this.worldServerInstance.getTotalWorldTime();
flag = false;
}
else
{
for (l3 = l - short1; l3 <= l + short1; ++l3)
{
double d4 = (double)l3 + 0.5D - p_77184_1_.posX;
for (int l1 = i1 - short1; l1 <= i1 + short1; ++l1)
{
double d5 = (double)l1 + 0.5D - p_77184_1_.posZ;
for (int i2 = this.worldServerInstance.getActualHeight() - 1; i2 >= 0; --i2)
{
if (this.worldServerInstance.getBlock(l3, i2, l1) == Blocks.portal)
{
while (this.worldServerInstance.getBlock(l3, i2 - 1, l1) == Blocks.portal)
{
--i2;
}
d7 = (double)i2 + 0.5D - p_77184_1_.posY;
double d8 = d4 * d4 + d7 * d7 + d5 * d5;
if (d3 < 0.0D || d8 < d3)
{
d3 = d8;
i = l3;
j = i2;
k = l1;
}
}
}
}
}
}
if (d3 >= 0.0D)
{
if (flag)
{
this.destinationCoordinateCache.add(j1, new Teleporter.PortalPosition(i, j, k, this.worldServerInstance.getTotalWorldTime()));
this.destinationCoordinateKeys.add(Long.valueOf(j1));
}
double d11 = (double)i + 0.5D;
double d6 = (double)j + 0.5D;
d7 = (double)k + 0.5D;
int i4 = -1;
if (this.worldServerInstance.getBlock(i - 1, j, k) == Blocks.portal)
{
i4 = 2;
}
if (this.worldServerInstance.getBlock(i + 1, j, k) == Blocks.portal)
{
i4 = 0;
}
if (this.worldServerInstance.getBlock(i, j, k - 1) == Blocks.portal)
{
i4 = 3;
}
if (this.worldServerInstance.getBlock(i, j, k + 1) == Blocks.portal)
{
i4 = 1;
}
int j2 = p_77184_1_.getTeleportDirection();
if (i4 > -1)
{
int k2 = Direction.rotateLeft[i4];
int l2 = Direction.offsetX[i4];
int i3 = Direction.offsetZ[i4];
int j3 = Direction.offsetX[k2];
int k3 = Direction.offsetZ[k2];
boolean flag1 = !this.worldServerInstance.isAirBlock(i + l2 + j3, j, k + i3 + k3) || !this.worldServerInstance.isAirBlock(i + l2 + j3, j + 1, k + i3 + k3);
boolean flag2 = !this.worldServerInstance.isAirBlock(i + l2, j, k + i3) || !this.worldServerInstance.isAirBlock(i + l2, j + 1, k + i3);
if (flag1 && flag2)
{
i4 = Direction.rotateOpposite[i4];
k2 = Direction.rotateOpposite[k2];
l2 = Direction.offsetX[i4];
i3 = Direction.offsetZ[i4];
j3 = Direction.offsetX[k2];
k3 = Direction.offsetZ[k2];
l3 = i - j3;
d11 -= (double)j3;
int k1 = k - k3;
d7 -= (double)k3;
flag1 = !this.worldServerInstance.isAirBlock(l3 + l2 + j3, j, k1 + i3 + k3) || !this.worldServerInstance.isAirBlock(l3 + l2 + j3, j + 1, k1 + i3 + k3);
flag2 = !this.worldServerInstance.isAirBlock(l3 + l2, j, k1 + i3) || !this.worldServerInstance.isAirBlock(l3 + l2, j + 1, k1 + i3);
}
float f1 = 0.5F;
float f2 = 0.5F;
if (!flag1 && flag2)
{
f1 = 1.0F;
}
else if (flag1 && !flag2)
{
f1 = 0.0F;
}
else if (flag1 && flag2)
{
f2 = 0.0F;
}
d11 += (double)((float)j3 * f1 + f2 * (float)l2);
d7 += (double)((float)k3 * f1 + f2 * (float)i3);
float f3 = 0.0F;
float f4 = 0.0F;
float f5 = 0.0F;
float f6 = 0.0F;
if (i4 == j2)
{
f3 = 1.0F;
f4 = 1.0F;
}
else if (i4 == Direction.rotateOpposite[j2])
{
f3 = -1.0F;
f4 = -1.0F;
}
else if (i4 == Direction.enderEyeMetaToDirection[j2])
{
f5 = 1.0F;
f6 = -1.0F;
}
else
{
f5 = -1.0F;
f6 = 1.0F;
}
double d9 = p_77184_1_.motionX;
double d10 = p_77184_1_.motionZ;
p_77184_1_.motionX = d9 * (double)f3 + d10 * (double)f6;
p_77184_1_.motionZ = d9 * (double)f5 + d10 * (double)f4;
p_77184_1_.rotationYaw = p_77184_8_ - (float)(j2 * 90) + (float)(i4 * 90);
}
else
{
p_77184_1_.motionX = p_77184_1_.motionY = p_77184_1_.motionZ = 0.0D;
}
p_77184_1_.setLocationAndAngles(d11, d6, d7, p_77184_1_.rotationYaw, p_77184_1_.rotationPitch);
return true;
}
else
{
return false;
}
}
public boolean makePortal(Entity p_85188_1_)
{
byte b0 = 16;
double d0 = -1.0D;
int i = MathHelper.floor_double(p_85188_1_.posX);
int j = MathHelper.floor_double(p_85188_1_.posY);
int k = MathHelper.floor_double(p_85188_1_.posZ);
int l = i;
int i1 = j;
int j1 = k;
int k1 = 0;
int l1 = this.random.nextInt(4);
int i2;
double d1;
int k2;
double d2;
int i3;
int j3;
int k3;
int l3;
int i4;
int j4;
int k4;
int l4;
int i5;
double d3;
double d4;
for (i2 = i - b0; i2 <= i + b0; ++i2)
{
d1 = (double)i2 + 0.5D - p_85188_1_.posX;
for (k2 = k - b0; k2 <= k + b0; ++k2)
{
d2 = (double)k2 + 0.5D - p_85188_1_.posZ;
label274:
for (i3 = this.worldServerInstance.getActualHeight() - 1; i3 >= 0; --i3)
{
if (this.worldServerInstance.isAirBlock(i2, i3, k2))
{
while (i3 > 0 && this.worldServerInstance.isAirBlock(i2, i3 - 1, k2))
{
--i3;
}
for (j3 = l1; j3 < l1 + 4; ++j3)
{
k3 = j3 % 2;
l3 = 1 - k3;
if (j3 % 4 >= 2)
{
k3 = -k3;
l3 = -l3;
}
for (i4 = 0; i4 < 3; ++i4)
{
for (j4 = 0; j4 < 4; ++j4)
{
for (k4 = -1; k4 < 4; ++k4)
{
l4 = i2 + (j4 - 1) * k3 + i4 * l3;
i5 = i3 + k4;
int j5 = k2 + (j4 - 1) * l3 - i4 * k3;
if (k4 < 0 && !this.worldServerInstance.getBlock(l4, i5, j5).getMaterial().isSolid() || k4 >= 0 && !this.worldServerInstance.isAirBlock(l4, i5, j5))
{
continue label274;
}
}
}
}
d3 = (double)i3 + 0.5D - p_85188_1_.posY;
d4 = d1 * d1 + d3 * d3 + d2 * d2;
if (d0 < 0.0D || d4 < d0)
{
d0 = d4;
l = i2;
i1 = i3;
j1 = k2;
k1 = j3 % 4;
}
}
}
}
}
}
if (d0 < 0.0D)
{
for (i2 = i - b0; i2 <= i + b0; ++i2)
{
d1 = (double)i2 + 0.5D - p_85188_1_.posX;
for (k2 = k - b0; k2 <= k + b0; ++k2)
{
d2 = (double)k2 + 0.5D - p_85188_1_.posZ;
label222:
for (i3 = this.worldServerInstance.getActualHeight() - 1; i3 >= 0; --i3)
{
if (this.worldServerInstance.isAirBlock(i2, i3, k2))
{
while (i3 > 0 && this.worldServerInstance.isAirBlock(i2, i3 - 1, k2))
{
--i3;
}
for (j3 = l1; j3 < l1 + 2; ++j3)
{
k3 = j3 % 2;
l3 = 1 - k3;
for (i4 = 0; i4 < 4; ++i4)
{
for (j4 = -1; j4 < 4; ++j4)
{
k4 = i2 + (i4 - 1) * k3;
l4 = i3 + j4;
i5 = k2 + (i4 - 1) * l3;
if (j4 < 0 && !this.worldServerInstance.getBlock(k4, l4, i5).getMaterial().isSolid() || j4 >= 0 && !this.worldServerInstance.isAirBlock(k4, l4, i5))
{
continue label222;
}
}
}
d3 = (double)i3 + 0.5D - p_85188_1_.posY;
d4 = d1 * d1 + d3 * d3 + d2 * d2;
if (d0 < 0.0D || d4 < d0)
{
d0 = d4;
l = i2;
i1 = i3;
j1 = k2;
k1 = j3 % 2;
}
}
}
}
}
}
}
int k5 = l;
int j2 = i1;
k2 = j1;
int l5 = k1 % 2;
int l2 = 1 - l5;
if (k1 % 4 >= 2)
{
l5 = -l5;
l2 = -l2;
}
boolean flag;
if (d0 < 0.0D)
{
if (i1 < 70)
{
i1 = 70;
}
if (i1 > this.worldServerInstance.getActualHeight() - 10)
{
i1 = this.worldServerInstance.getActualHeight() - 10;
}
j2 = i1;
for (i3 = -1; i3 <= 1; ++i3)
{
for (j3 = 1; j3 < 3; ++j3)
{
for (k3 = -1; k3 < 3; ++k3)
{
l3 = k5 + (j3 - 1) * l5 + i3 * l2;
i4 = j2 + k3;
j4 = k2 + (j3 - 1) * l2 - i3 * l5;
flag = k3 < 0;
this.worldServerInstance.setBlock(l3, i4, j4, flag ? Blocks.obsidian : Blocks.air);
}
}
}
}
for (i3 = 0; i3 < 4; ++i3)
{
for (j3 = 0; j3 < 4; ++j3)
{
for (k3 = -1; k3 < 4; ++k3)
{
l3 = k5 + (j3 - 1) * l5;
i4 = j2 + k3;
j4 = k2 + (j3 - 1) * l2;
flag = j3 == 0 || j3 == 3 || k3 == -1 || k3 == 3;
this.worldServerInstance.setBlock(l3, i4, j4, (Block)(flag ? Blocks.obsidian : Blocks.portal), 0, 2);
}
}
for (j3 = 0; j3 < 4; ++j3)
{
for (k3 = -1; k3 < 4; ++k3)
{
l3 = k5 + (j3 - 1) * l5;
i4 = j2 + k3;
j4 = k2 + (j3 - 1) * l2;
this.worldServerInstance.notifyBlocksOfNeighborChange(l3, i4, j4, this.worldServerInstance.getBlock(l3, i4, j4));
}
}
}
return true;
}
/**
* called periodically to remove out-of-date portal locations from the cache list. Argument par1 is a
* WorldServer.getTotalWorldTime() value.
*/
public void removeStalePortalLocations(long p_85189_1_)
{
if (p_85189_1_ % 100L == 0L)
{
Iterator iterator = this.destinationCoordinateKeys.iterator();
long j = p_85189_1_ - 600L;
while (iterator.hasNext())
{
Long olong = (Long)iterator.next();
Teleporter.PortalPosition portalposition = (Teleporter.PortalPosition)this.destinationCoordinateCache.getValueByKey(olong.longValue());
if (portalposition == null || portalposition.lastUpdateTime < j)
{
iterator.remove();
this.destinationCoordinateCache.remove(olong.longValue());
}
}
}
}
public class PortalPosition extends ChunkCoordinates
{
/** The worldtime at which this PortalPosition was last verified */
public long lastUpdateTime;
private static final String __OBFID = "CL_00000154";
public PortalPosition(int p_i1962_2_, int p_i1962_3_, int p_i1962_4_, long p_i1962_5_)
{
super(p_i1962_2_, p_i1962_3_, p_i1962_4_);
this.lastUpdateTime = p_i1962_5_;
}
}
}