public void a(Packet10Flying packet10flying) {
WorldServer worldserver = this.minecraftServer.a(this.player.dimension);
this.i = true;
double d0;
if (!this.m) {
d0 = packet10flying.y - this.y;
if (packet10flying.x == this.x && d0 * d0 < 0.01D && packet10flying.z == this.z) {
this.m = true;
}
}
// CraftBukkit start
Player player = getPlayer();
Location from =
new Location(player.getWorld(), lastPosX, lastPosY, lastPosZ, lastYaw, lastPitch);
Location to = player.getLocation();
// Prevent 40 event-calls for less than b single pixel of movement >.>
double delta =
Math.pow(this.lastPosX - this.x, 2)
+ Math.pow(this.lastPosY - this.y, 2)
+ Math.pow(this.lastPosZ - this.z, 2);
float deltaAngle =
Math.abs(this.lastYaw - this.player.yaw) + Math.abs(this.lastPitch - this.player.pitch);
if (delta > 1f / 256 || deltaAngle > 10f) {
// Skip the first time we do this
if (lastPosX != Double.MAX_VALUE) {
PlayerMoveEvent event = new PlayerMoveEvent(player, from, to);
server.getPluginManager().callEvent(event);
from = event.getFrom();
to = event.isCancelled() ? from : event.getTo();
this.player.locX = to.getX();
this.player.locY = to.getY();
this.player.locZ = to.getZ();
this.player.yaw = to.getYaw();
this.player.pitch = to.getPitch();
}
this.lastPosX = this.player.locX;
this.lastPosY = this.player.locY;
this.lastPosZ = this.player.locZ;
this.lastYaw = this.player.yaw;
this.lastPitch = this.player.pitch;
}
if (Math.abs(packet10flying.x) > 32000000 || Math.abs(packet10flying.z) > 32000000) {
player.teleport(player.getWorld().getSpawnLocation());
System.err.println(
player.getName() + " was caught trying to crash the server with an invalid position.");
player.kickPlayer("Nope!");
return;
}
if (Double.isNaN(packet10flying.x)
|| packet10flying.x == Double.POSITIVE_INFINITY
|| packet10flying.x == Double.NEGATIVE_INFINITY) {
player.teleport(player.getWorld().getSpawnLocation());
System.err.println(player.getName() + " was caught trying to set an invalid position.");
player.kickPlayer("Nope!");
return;
}
if (Double.isNaN(packet10flying.y)
|| packet10flying.y == Double.POSITIVE_INFINITY
|| packet10flying.y == Double.NEGATIVE_INFINITY) {
player.teleport(player.getWorld().getSpawnLocation());
System.err.println(player.getName() + " was caught trying to set an invalid position.");
player.kickPlayer("Nope!");
return;
}
if (Double.isNaN(packet10flying.z)
|| packet10flying.z == Double.POSITIVE_INFINITY
|| packet10flying.z == Double.NEGATIVE_INFINITY) {
player.teleport(player.getWorld().getSpawnLocation());
System.err.println(player.getName() + " was caught trying to set an invalid position.");
player.kickPlayer("Nope!");
return;
}
if (Double.isNaN(packet10flying.stance)
|| packet10flying.stance == Double.POSITIVE_INFINITY
|| packet10flying.stance == Double.NEGATIVE_INFINITY) {
player.teleport(player.getWorld().getSpawnLocation());
System.err.println(player.getName() + " was caught trying to set an invalid position.");
player.kickPlayer("Nope!");
return;
}
if (this.m && !this.player.dead) {
// CraftBukkit end
double d1;
double d2;
double d3;
double d4;
if (this.player.vehicle != null) {
float f = this.player.yaw;
float f1 = this.player.pitch;
this.player.vehicle.f();
d1 = this.player.locX;
d2 = this.player.locY;
d3 = this.player.locZ;
double d5 = 0.0D;
d4 = 0.0D;
if (packet10flying.hasLook) {
f = packet10flying.yaw;
f1 = packet10flying.pitch;
}
if (packet10flying.h && packet10flying.y == -999.0D && packet10flying.stance == -999.0D) {
d5 = packet10flying.x;
d4 = packet10flying.z;
}
this.player.onGround = packet10flying.g;
this.player = this.player.a(true); // CraftBukkit
this.player.move(d5, 0.0D, d4);
this.player.setLocation(d1, d2, d3, f, f1);
this.player.motX = d5;
this.player.motZ = d4;
if (this.player.vehicle != null) {
worldserver.vehicleEnteredWorld(this.player.vehicle, true);
}
if (this.player.vehicle != null) {
this.player.vehicle.f();
}
this.minecraftServer.serverConfigurationManager.d(this.player);
this.x = this.player.locX;
this.y = this.player.locY;
this.z = this.player.locZ;
worldserver.playerJoinedWorld(this.player);
return;
}
d0 = this.player.locY;
this.x = this.player.locX;
this.y = this.player.locY;
this.z = this.player.locZ;
d1 = this.player.locX;
d2 = this.player.locY;
d3 = this.player.locZ;
float f2 = this.player.yaw;
float f3 = this.player.pitch;
if (packet10flying.h && packet10flying.y == -999.0D && packet10flying.stance == -999.0D) {
packet10flying.h = false;
}
if (packet10flying.h) {
d1 = packet10flying.x;
d2 = packet10flying.y;
d3 = packet10flying.z;
d4 = packet10flying.stance - packet10flying.y;
if (!this.player.isSleeping() && (d4 > 1.65D || d4 < 0.1D)) {
this.disconnect("Illegal stance");
a.warning(this.player.name + " had an illegal stance: " + d4);
return;
}
if (Math.abs(packet10flying.x) > 3.2E7D || Math.abs(packet10flying.z) > 3.2E7D) {
this.disconnect("Illegal position");
return;
}
}
if (packet10flying.hasLook) {
f2 = packet10flying.yaw;
f3 = packet10flying.pitch;
}
this.player.a(true);
this.player.br = 0.0F;
this.player.setLocation(this.x, this.y, this.z, f2, f3);
if (!this.m) {
return;
}
d4 = d1 - this.player.locX;
double d6 = d2 - this.player.locY;
double d7 = d3 - this.player.locZ;
double d8 = d4 * d4 + d6 * d6 + d7 * d7;
// CraftBukkit start - make the movement speed check behave properly under tick degradation.
int elapsedTicks = MinecraftServer.currentTick - this.lastTick;
// Added this.m condition to solve this check being triggered by teleports
if (d8 > 100.0D * (elapsedTicks <= 0 ? 1 : elapsedTicks) && this.m) {
a.warning(
this.player.name
+ " moved too quickly! Elapsed ticks: "
+ (elapsedTicks == 0 ? 1 : elapsedTicks)
+ ", Distance change: "
+ d8);
this.disconnect("You moved too quickly :( (Hacking?)");
return;
}
this.lastTick = MinecraftServer.currentTick;
// CraftBukkit end
float f4 = 0.0625F;
boolean flag =
worldserver
.getEntities(
this.player,
this.player.boundingBox.clone().shrink((double) f4, (double) f4, (double) f4))
.size()
== 0;
this.player.move(d4, d6, d7);
d4 = d1 - this.player.locX;
d6 = d2 - this.player.locY;
if (d6 > -0.5D || d6 < 0.5D) {
d6 = 0.0D;
}
d7 = d3 - this.player.locZ;
d8 = d4 * d4 + d6 * d6 + d7 * d7;
boolean flag1 = false;
if (d8 > 0.0625D && !this.player.isSleeping()) {
flag1 = true;
a.warning(this.player.name + " moved wrongly!");
System.out.println("Got position " + d1 + ", " + d2 + ", " + d3);
System.out.println(
"Expected " + this.player.locX + ", " + this.player.locY + ", " + this.player.locZ);
}
this.player.setLocation(d1, d2, d3, f2, f3);
boolean flag2 =
worldserver
.getEntities(
this.player,
this.player.boundingBox.clone().shrink((double) f4, (double) f4, (double) f4))
.size()
== 0;
if (flag && (flag1 || !flag2) && !this.player.isSleeping()) {
this.a(this.x, this.y, this.z, f2, f3);
return;
}
AxisAlignedBB axisalignedbb =
this.player
.boundingBox
.clone()
.b((double) f4, (double) f4, (double) f4)
.a(0.0D, -0.55D, 0.0D);
if (!this.minecraftServer.o && !worldserver.b(axisalignedbb)) {
if (d6 >= -0.03125D) {
++this.h;
if (this.h > 80) {
a.warning(this.player.name + " was kicked for floating too long!");
this.disconnect("Flying is not enabled on this server");
return;
}
}
} else {
this.h = 0;
}
this.player.onGround = packet10flying.g;
this.minecraftServer.serverConfigurationManager.d(this.player);
this.player.b(this.player.locY - d0, packet10flying.g);
}
}