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.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();
public Teleporter(WorldServer par1WorldServer)
{
this.worldServerInstance = par1WorldServer;
this.random = new Random(par1WorldServer.getSeed());
}
/**
* Place an entity in a nearby portal, creating one if necessary.
*/
public void placeInPortal(Entity par1Entity, double par2, double par4, double par6, float par8)
{
if (this.worldServerInstance.provider.dimensionId != 1)
{
if (!this.placeInExistingPortal(par1Entity, par2, par4, par6, par8))
{
this.makePortal(par1Entity);
this.placeInExistingPortal(par1Entity, par2, par4, par6, par8);
}
}
else
{
int i = MathHelper.floor_double(par1Entity.posX);
int j = MathHelper.floor_double(par1Entity.posY) - 1;
int k = MathHelper.floor_double(par1Entity.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 ? Block.obsidian.blockID : 0);
}
}
}
par1Entity.setLocationAndAngles((double)i, (double)j, (double)k, par1Entity.rotationYaw, 0.0F);
par1Entity.motionX = par1Entity.motionY = par1Entity.motionZ = 0.0D;
}
}
/**
* Place an entity in a nearby portal which already exists.
*/
public boolean placeInExistingPortal(Entity par1Entity, double par2, double par4, double par6, float par8)
{
short short1 = 128;
double d3 = -1.0D;
int i = 0;
int j = 0;
int k = 0;
int l = MathHelper.floor_double(par1Entity.posX);
int i1 = MathHelper.floor_double(par1Entity.posZ);
long j1 = ChunkCoordIntPair.chunkXZ2Int(l, i1);
boolean flag = true;
double d4;
int k1;
if (this.destinationCoordinateCache.containsItem(j1))
{
PortalPosition portalposition = (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 (k1 = l - short1; k1 <= l + short1; ++k1)
{
double d5 = (double)k1 + 0.5D - par1Entity.posX;
for (int l1 = i1 - short1; l1 <= i1 + short1; ++l1)
{
double d6 = (double)l1 + 0.5D - par1Entity.posZ;
for (int i2 = this.worldServerInstance.getActualHeight() - 1; i2 >= 0; --i2)
{
if (this.worldServerInstance.getBlockId(k1, i2, l1) == Block.portal.blockID)
{
while (this.worldServerInstance.getBlockId(k1, i2 - 1, l1) == Block.portal.blockID)
{
--i2;
}
d4 = (double)i2 + 0.5D - par1Entity.posY;
double d7 = d5 * d5 + d4 * d4 + d6 * d6;
if (d3 < 0.0D || d7 < d3)
{
d3 = d7;
i = k1;
j = i2;
k = l1;
}
}
}
}
}
}
if (d3 >= 0.0D)
{
if (flag)
{
this.destinationCoordinateCache.add(j1, new PortalPosition(this, i, j, k, this.worldServerInstance.getTotalWorldTime()));
this.destinationCoordinateKeys.add(Long.valueOf(j1));
}
double d8 = (double)i + 0.5D;
double d9 = (double)j + 0.5D;
d4 = (double)k + 0.5D;
int j2 = -1;
if (this.worldServerInstance.getBlockId(i - 1, j, k) == Block.portal.blockID)
{
j2 = 2;
}
if (this.worldServerInstance.getBlockId(i + 1, j, k) == Block.portal.blockID)
{
j2 = 0;
}
if (this.worldServerInstance.getBlockId(i, j, k - 1) == Block.portal.blockID)
{
j2 = 3;
}
if (this.worldServerInstance.getBlockId(i, j, k + 1) == Block.portal.blockID)
{
j2 = 1;
}
int k2 = par1Entity.getTeleportDirection();
if (j2 > -1)
{
int l2 = Direction.rotateLeft[j2];
int i3 = Direction.offsetX[j2];
int j3 = Direction.offsetZ[j2];
int k3 = Direction.offsetX[l2];
int l3 = Direction.offsetZ[l2];
boolean flag1 = !this.worldServerInstance.isAirBlock(i + i3 + k3, j, k + j3 + l3) || !this.worldServerInstance.isAirBlock(i + i3 + k3, j + 1, k + j3 + l3);
boolean flag2 = !this.worldServerInstance.isAirBlock(i + i3, j, k + j3) || !this.worldServerInstance.isAirBlock(i + i3, j + 1, k + j3);
if (flag1 && flag2)
{
j2 = Direction.rotateOpposite[j2];
l2 = Direction.rotateOpposite[l2];
i3 = Direction.offsetX[j2];
j3 = Direction.offsetZ[j2];
k3 = Direction.offsetX[l2];
l3 = Direction.offsetZ[l2];
k1 = i - k3;
d8 -= (double)k3;
int i4 = k - l3;
d4 -= (double)l3;
flag1 = !this.worldServerInstance.isAirBlock(k1 + i3 + k3, j, i4 + j3 + l3) || !this.worldServerInstance.isAirBlock(k1 + i3 + k3, j + 1, i4 + j3 + l3);
flag2 = !this.worldServerInstance.isAirBlock(k1 + i3, j, i4 + j3) || !this.worldServerInstance.isAirBlock(k1 + i3, j + 1, i4 + j3);
}
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;
}
d8 += (double)((float)k3 * f1 + f2 * (float)i3);
d4 += (double)((float)l3 * f1 + f2 * (float)j3);
float f3 = 0.0F;
float f4 = 0.0F;
float f5 = 0.0F;
float f6 = 0.0F;
if (j2 == k2)
{
f3 = 1.0F;
f4 = 1.0F;
}
else if (j2 == Direction.rotateOpposite[k2])
{
f3 = -1.0F;
f4 = -1.0F;
}
else if (j2 == Direction.rotateRight[k2])
{
f5 = 1.0F;
f6 = -1.0F;
}
else
{
f5 = -1.0F;
f6 = 1.0F;
}
double d10 = par1Entity.motionX;
double d11 = par1Entity.motionZ;
par1Entity.motionX = d10 * (double)f3 + d11 * (double)f6;
par1Entity.motionZ = d10 * (double)f5 + d11 * (double)f4;
par1Entity.rotationYaw = par8 - (float)(k2 * 90) + (float)(j2 * 90);
}
else
{
par1Entity.motionX = par1Entity.motionY = par1Entity.motionZ = 0.0D;
}
par1Entity.setLocationAndAngles(d8, d9, d4, par1Entity.rotationYaw, par1Entity.rotationPitch);
return true;
}
else
{
return false;
}
}
public boolean makePortal(Entity par1Entity)
{
byte b0 = 16;
double d0 = -1.0D;
int i = MathHelper.floor_double(par1Entity.posX);
int j = MathHelper.floor_double(par1Entity.posY);
int k = MathHelper.floor_double(par1Entity.posZ);
int l = i;
int i1 = j;
int j1 = k;
int k1 = 0;
int l1 = this.random.nextInt(4);
int i2;
double d1;
double d2;
int j2;
int k2;
int l2;
int i3;
int j3;
int k3;
int l3;
int i4;
int j4;
int k4;
double d3;
double d4;
for (i2 = i - b0; i2 <= i + b0; ++i2)
{
d1 = (double)i2 + 0.5D - par1Entity.posX;
for (j2 = k - b0; j2 <= k + b0; ++j2)
{
d2 = (double)j2 + 0.5D - par1Entity.posZ;
label274:
for (k2 = this.worldServerInstance.getActualHeight() - 1; k2 >= 0; --k2)
{
if (this.worldServerInstance.isAirBlock(i2, k2, j2))
{
while (k2 > 0 && this.worldServerInstance.isAirBlock(i2, k2 - 1, j2))
{
--k2;
}
for (i3 = l1; i3 < l1 + 4; ++i3)
{
l2 = i3 % 2;
k3 = 1 - l2;
if (i3 % 4 >= 2)
{
l2 = -l2;
k3 = -k3;
}
for (j3 = 0; j3 < 3; ++j3)
{
for (i4 = 0; i4 < 4; ++i4)
{
for (l3 = -1; l3 < 4; ++l3)
{
k4 = i2 + (i4 - 1) * l2 + j3 * k3;
j4 = k2 + l3;
int l4 = j2 + (i4 - 1) * k3 - j3 * l2;
if (l3 < 0 && !this.worldServerInstance.getBlockMaterial(k4, j4, l4).isSolid() || l3 >= 0 && !this.worldServerInstance.isAirBlock(k4, j4, l4))
{
continue label274;
}
}
}
}
d4 = (double)k2 + 0.5D - par1Entity.posY;
d3 = d1 * d1 + d4 * d4 + d2 * d2;
if (d0 < 0.0D || d3 < d0)
{
d0 = d3;
l = i2;
i1 = k2;
j1 = j2;
k1 = i3 % 4;
}
}
}
}
}
}
if (d0 < 0.0D)
{
for (i2 = i - b0; i2 <= i + b0; ++i2)
{
d1 = (double)i2 + 0.5D - par1Entity.posX;
for (j2 = k - b0; j2 <= k + b0; ++j2)
{
d2 = (double)j2 + 0.5D - par1Entity.posZ;
label222:
for (k2 = this.worldServerInstance.getActualHeight() - 1; k2 >= 0; --k2)
{
if (this.worldServerInstance.isAirBlock(i2, k2, j2))
{
while (k2 > 0 && this.worldServerInstance.isAirBlock(i2, k2 - 1, j2))
{
--k2;
}
for (i3 = l1; i3 < l1 + 2; ++i3)
{
l2 = i3 % 2;
k3 = 1 - l2;
for (j3 = 0; j3 < 4; ++j3)
{
for (i4 = -1; i4 < 4; ++i4)
{
l3 = i2 + (j3 - 1) * l2;
k4 = k2 + i4;
j4 = j2 + (j3 - 1) * k3;
if (i4 < 0 && !this.worldServerInstance.getBlockMaterial(l3, k4, j4).isSolid() || i4 >= 0 && !this.worldServerInstance.isAirBlock(l3, k4, j4))
{
continue label222;
}
}
}
d4 = (double)k2 + 0.5D - par1Entity.posY;
d3 = d1 * d1 + d4 * d4 + d2 * d2;
if (d0 < 0.0D || d3 < d0)
{
d0 = d3;
l = i2;
i1 = k2;
j1 = j2;
k1 = i3 % 2;
}
}
}
}
}
}
}
int i5 = l;
int j5 = i1;
j2 = j1;
int k5 = k1 % 2;
int l5 = 1 - k5;
if (k1 % 4 >= 2)
{
k5 = -k5;
l5 = -l5;
}
boolean flag;
if (d0 < 0.0D)
{
if (i1 < 70)
{
i1 = 70;
}
if (i1 > this.worldServerInstance.getActualHeight() - 10)
{
i1 = this.worldServerInstance.getActualHeight() - 10;
}
j5 = i1;
for (k2 = -1; k2 <= 1; ++k2)
{
for (i3 = 1; i3 < 3; ++i3)
{
for (l2 = -1; l2 < 3; ++l2)
{
k3 = i5 + (i3 - 1) * k5 + k2 * l5;
j3 = j5 + l2;
i4 = j2 + (i3 - 1) * l5 - k2 * k5;
flag = l2 < 0;
this.worldServerInstance.setBlock(k3, j3, i4, flag ? Block.obsidian.blockID : 0);
}
}
}
}
for (k2 = 0; k2 < 4; ++k2)
{
for (i3 = 0; i3 < 4; ++i3)
{
for (l2 = -1; l2 < 4; ++l2)
{
k3 = i5 + (i3 - 1) * k5;
j3 = j5 + l2;
i4 = j2 + (i3 - 1) * l5;
flag = i3 == 0 || i3 == 3 || l2 == -1 || l2 == 3;
this.worldServerInstance.setBlock(k3, j3, i4, flag ? Block.obsidian.blockID : Block.portal.blockID, 0, 2);
}
}
for (i3 = 0; i3 < 4; ++i3)
{
for (l2 = -1; l2 < 4; ++l2)
{
k3 = i5 + (i3 - 1) * k5;
j3 = j5 + l2;
i4 = j2 + (i3 - 1) * l5;
this.worldServerInstance.notifyBlocksOfNeighborChange(k3, j3, i4, this.worldServerInstance.getBlockId(k3, j3, i4));
}
}
}
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 par1)
{
if (par1 % 100L == 0L)
{
Iterator iterator = this.destinationCoordinateKeys.iterator();
long j = par1 - 600L;
while (iterator.hasNext())
{
Long olong = (Long)iterator.next();
PortalPosition portalposition = (PortalPosition)this.destinationCoordinateCache.getValueByKey(olong.longValue());
if (portalposition == null || portalposition.lastUpdateTime < j)
{
iterator.remove();
this.destinationCoordinateCache.remove(olong.longValue());
}
}
}
}
}