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package com.earth2me.essentials.anticheat.checks.moving;
import com.earth2me.essentials.anticheat.NoCheat;
import com.earth2me.essentials.anticheat.NoCheatPlayer;
import com.earth2me.essentials.anticheat.actions.ParameterName;
import com.earth2me.essentials.anticheat.data.Statistics.Id;
import java.util.Locale;
/**
* A check to see if people cheat by tricking the server to not deal them fall damage.
*
*/
public class NoFallCheck extends MovingCheck
{
public NoFallCheck(NoCheat plugin)
{
super(plugin, "moving.nofall");
}
/**
* Calculate if and how much the player "failed" this check.
*
*/
public void check(NoCheatPlayer player, MovingData data, MovingConfig cc)
{
// If the player is serverside in creative mode, we have to stop here to
// avoid hurting him when he switches back to "normal" mode
if (player.isCreative())
{
data.fallDistance = 0F;
data.lastAddedFallDistance = 0F;
return;
}
// This check is pretty much always a step behind for technical reasons.
if (data.fromOnOrInGround)
{
// Start with zero fall distance
data.fallDistance = 0F;
}
if (cc.nofallaggressive && data.fromOnOrInGround && data.toOnOrInGround && data.from.y <= data.to.y && player.getPlayer().getFallDistance() > 3.0F)
{
data.fallDistance = player.getPlayer().getFallDistance();
data.nofallVL += data.fallDistance;
incrementStatistics(player, Id.MOV_NOFALL, data.fallDistance);
// Execute whatever actions are associated with this check and the
// violation level and find out if we should cancel the event
final boolean cancel = executeActions(player, cc.nofallActions, data.nofallVL);
if (cancel)
{
player.dealFallDamage();
}
data.fallDistance = 0F;
}
// If we increased fall height before for no good reason, reduce now by
// the same amount
if (player.getPlayer().getFallDistance() > data.lastAddedFallDistance)
{
player.getPlayer().setFallDistance(player.getPlayer().getFallDistance() - data.lastAddedFallDistance);
}
data.lastAddedFallDistance = 0;
// We want to know if the fallDistance recorded by the game is smaller
// than the fall distance recorded by the plugin
final float difference = data.fallDistance - player.getPlayer().getFallDistance();
if (difference > 1.0F && data.toOnOrInGround && data.fallDistance > 2.0F)
{
data.nofallVL += difference;
incrementStatistics(player, Id.MOV_NOFALL, difference);
// Execute whatever actions are associated with this check and the
// violation level and find out if we should cancel the event
final boolean cancel = executeActions(player, cc.nofallActions, data.nofallVL);
// If "cancelled", the fall damage gets dealt in a way that's
// visible to other plugins
if (cancel)
{
// Increase the fall distance a bit :)
final float totalDistance = data.fallDistance + difference * (cc.nofallMultiplier - 1.0F);
player.getPlayer().setFallDistance(totalDistance);
}
data.fallDistance = 0F;
}
// Increase the fall distance that is recorded by the plugin, AND set
// the fall distance of the player
// to whatever he would get with this move event. This modifies
// Minecrafts fall damage calculation
// slightly, but that's still better than ignoring players that try to
// use "teleports" or "stepdown"
// to avoid falldamage. It is only added for big height differences
// anyway, as to avoid to much deviation
// from the original Minecraft feeling.
final double oldY = data.from.y;
final double newY = data.to.y;
if (oldY > newY)
{
final float dist = (float)(oldY - newY);
data.fallDistance += dist;
if (dist > 1.0F)
{
data.lastAddedFallDistance = dist;
player.getPlayer().setFallDistance(player.getPlayer().getFallDistance() + dist);
}
else
{
data.lastAddedFallDistance = 0.0F;
}
}
else
{
data.lastAddedFallDistance = 0.0F;
}
// Reduce falldamage violation level
data.nofallVL *= 0.95D;
return;
}
@Override
public String getParameter(ParameterName wildcard, NoCheatPlayer player)
{
if (wildcard == ParameterName.VIOLATIONS)
{
return String.format(Locale.US, "%d", (int)getData(player).nofallVL);
}
else if (wildcard == ParameterName.FALLDISTANCE)
{
return String.format(Locale.US, "%.2f", getData(player).fallDistance);
}
else
{
return super.getParameter(wildcard, player);
}
}
}
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