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package net.minecraft.server;
import java.util.Iterator;
public class WorldMapHumanTracker {
public final EntityHuman trackee;
public int[] b;
public int[] c;
private int f;
private int g;
private byte[] h;
public int d;
private boolean i;
final WorldMap worldMap;
public WorldMapHumanTracker(WorldMap worldmap, EntityHuman entityhuman) {
this.worldMap = worldmap;
this.b = new int[128];
this.c = new int[128];
this.f = 0;
this.g = 0;
this.i = false;
this.trackee = entityhuman;
for (int i = 0; i < this.b.length; ++i) {
this.b[i] = 0;
this.c[i] = 127;
}
}
public byte[] a(ItemStack itemstack) {
byte[] abyte;
if (!this.i) {
abyte = new byte[] { (byte) 2, this.worldMap.scale};
this.i = true;
return abyte;
} else {
int i;
int j;
org.bukkit.craftbukkit.map.RenderData render = this.worldMap.mapView.render((org.bukkit.craftbukkit.entity.CraftPlayer) trackee.getBukkitEntity()); // CraftBukkit
if (--this.g < 0) {
this.g = 4;
abyte = new byte[render.cursors.size() * 3 + 1]; // CraftBukkit
abyte[0] = 1;
i = 0;
// CraftBukkit start
for (i = 0; i < render.cursors.size(); ++i) {
org.bukkit.map.MapCursor cursor = render.cursors.get(i);
if (!cursor.isVisible()) continue;
byte value = (byte) (((cursor.getRawType() == 0 || cursor.getDirection() < 8 ? cursor.getDirection() : cursor.getDirection() - 1) & 15) * 16);
abyte[i * 3 + 1] = (byte) (value | (cursor.getRawType() != 0 && value < 0 ? 16 - cursor.getRawType() : cursor.getRawType()));
abyte[i * 3 + 2] = (byte) cursor.getX();
abyte[i * 3 + 3] = (byte) cursor.getY();
}
// CraftBukkit end
boolean flag = !itemstack.y();
if (this.h != null && this.h.length == abyte.length) {
for (j = 0; j < abyte.length; ++j) {
if (abyte[j] != this.h[j]) {
flag = false;
break;
}
}
} else {
flag = false;
}
if (!flag) {
this.h = abyte;
return abyte;
}
}
for (int k = 0; k < 1; ++k) {
i = this.f++ * 11 % 128;
if (this.b[i] >= 0) {
int l = this.c[i] - this.b[i] + 1;
j = this.b[i];
byte[] abyte1 = new byte[l + 3];
abyte1[0] = 0;
abyte1[1] = (byte) i;
abyte1[2] = (byte) j;
for (int i1 = 0; i1 < abyte1.length - 3; ++i1) {
abyte1[i1 + 3] = render.buffer[(i1 + j) * 128 + i]; // CraftBukkit
}
this.c[i] = -1;
this.b[i] = -1;
return abyte1;
}
}
return null;
}
}
}
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