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Fixed moving check to be much stricter on sprinting mods and similar

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This commit is contained in:
Evenprime 2011-07-10 11:23:55 +02:00
parent 25ab6a6659
commit 62592a3580
3 changed files with 23 additions and 113 deletions
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2
plugin.yml
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@ -3,7 +3,7 @@ name: NoCheat
author: Evenprime
main: cc.co.evenprime.bukkit.nocheat.NoCheat
version: 1.08b
version: 1.08c
softdepend: [ Permissions, CraftIRC ]

127
src/cc/co/evenprime/bukkit/nocheat/checks/MovingCheck.java
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@ -52,9 +52,9 @@ public class MovingCheck extends Check {
// How high may a player move in one event on ground
private final static double stepHeight = 0.501D;
private final static double stepWidth = 0.6D;
private final static double sneakWidth = 0.25D;
private final static double swimWidth = 0.4D;
private final static double stepWidth = 0.25D;
private final static double sneakWidth = 0.14D;
private final static double swimWidth = 0.18D;
private int ticksBeforeSummary = 100;
@ -136,16 +136,24 @@ public class MovingCheck extends Check {
final int onGroundFrom = playerIsOnGround(from, 0.0D);
double overLimit = 0.0D;
// Do various checks on the players horizontal movement
int sn = getSneakingViolationLevel(combined, data, player);
int sw = getSwimmingViolationLevel(combined, data, onGroundFrom == MovingData.LIQUID, player);
int s = limitCheck(combined - (data.horizFreedom + stepWidth));
if(player.isSneaking() && !allowFakeSneak && !plugin.hasPermission(player, PermissionData.PERMISSION_FAKESNEAK, checkOPs)) {
overLimit = Math.max(0.0D, combined - (data.horizFreedom + sneakWidth));
}
else if(onGroundFrom == MovingData.LIQUID && !allowFastSwim && !plugin.hasPermission(player, PermissionData.PERMISSION_FASTSWIM, checkOPs)) {
overLimit = Math.max(0.0D, combined - (data.horizFreedom + swimWidth));
}
else {
overLimit = Math.max(0.0D, combined - (data.horizFreedom + stepWidth));
}
// The maximum of the three values is the biggest violation measured
int violationLevelHorizontal = sn > sw && sn > s ? sn : (sw > s ? sw : s);
data.runningThreshold += overLimit;
int violationLevelHorizontal = limitCheck(data.runningThreshold - 1);
// Reduce horiz moving freedom with each event
data.runningThreshold *= 0.95;
data.horizFreedom *= 0.9;
/**** Horizontal movement check END ****/
@ -246,99 +254,6 @@ public class MovingCheck extends Check {
statisticTotalEvents++;
}
/**
* Run a check if a sneaking player is moving too fast
*
* @param combined Distance moved
* @param data the players data
* @param player the player
* @return violation level
*/
private int getSneakingViolationLevel(final double combined, final MovingData data, final Player player) {
int violationLevelSneaking = -1;
// Maybe the player is allowed to sneak faster than usual?
final boolean canFakeSneak = allowFakeSneak || plugin.hasPermission(player, PermissionData.PERMISSION_FAKESNEAK, checkOPs);
if(!canFakeSneak) {
// Explaination blob:
// When a player starts to sneak, he may have a phase where he is still moving faster than he
// should be, e.g. because he is in air, on slippery ground, ...
// Therefore he gets a counter that gets reduced everytime he is too fast and slowly incremented
// every time he is slow enough
// If the counter reaches zero, his movement is considered a violation.
if(player.isSneaking()) {
violationLevelSneaking = limitCheck(combined - (data.horizFreedom + sneakWidth));
if(violationLevelSneaking >= 0) {
if(combined >= data.sneakingLastDistance * 0.9)
data.sneakingFreedomCounter -= 2;
else
{
violationLevelSneaking = -1;
}
}
data.sneakingLastDistance = combined;
}
if(violationLevelSneaking >= 0 && data.sneakingFreedomCounter > 0) {
violationLevelSneaking = -1;
}
else if(violationLevelSneaking < 0 && data.sneakingFreedomCounter < 10){
data.sneakingFreedomCounter += 1;
}
}
return violationLevelSneaking;
}
private int getSwimmingViolationLevel( final double combined, final MovingData data, final boolean isSwimming, final Player player) {
int violationLevelSwimming = -1;
// Maybe the player is allowed to swim faster than usual?
final boolean canFastSwim = allowFastSwim || plugin.hasPermission(player, PermissionData.PERMISSION_FASTSWIM, checkOPs);
if(!canFastSwim) {
final double limit = data.horizFreedom + swimWidth;
// Explaination blob:
// When a player starts to swim, he may have a phase where he is still moving faster than he
// should be, e.g. because he jumped into the water ...
// Therefore he gets a counter that gets reduced everytime he is too fast and slowly incremented
// every time he is slow enough
// If the counter reaches zero, his movement is considered a violation.
if(isSwimming) {
violationLevelSwimming = limitCheck(combined - limit);
if(violationLevelSwimming >= 0) {
if(combined >= data.swimmingLastDistance * 0.9)
data.swimmingFreedomCounter -= 2;
else
{
violationLevelSwimming = -1;
}
}
data.swimmingLastDistance = combined;
}
if(violationLevelSwimming >= 0 && data.swimmingFreedomCounter > 0) {
violationLevelSwimming = -1;
}
else if(violationLevelSwimming < 0 && data.swimmingFreedomCounter < 10){
data.swimmingFreedomCounter += 1;
}
}
return violationLevelSwimming;
}
private double calculateVerticalLimit(final MovingData data, final int onGroundFrom) {
// A halfway lag-resistant method of allowing vertical acceleration without allowing blatant cheating
@ -388,9 +303,9 @@ public class MovingCheck extends Check {
data.firstEventAfterRespawn = false;
data.teleportTo = from.clone();
}
// Now it gets complicated: (a friendly reminder to myself why this actually works in CB 950+)
// data.teleportTo gets a location assigned if a teleport event is successfully executed.
// But there is a delay between the serverside execution of the teleport (instantly) and
// the execution on the client side (may take an arbitrary time). During that time, the
@ -409,7 +324,7 @@ public class MovingCheck extends Check {
data.teleportTo = null;
}
}
// Dead or in vehicles -> I don't care
if(player.isDead() || data.insideVehicle || player.isInsideVehicle()) {
return true;
@ -477,7 +392,7 @@ public class MovingCheck extends Check {
data.setBackPoint = event.getTo().clone();
//data.lastLocation = event.getTo().clone();
}
// reset anyway - if another plugin cancelled our teleport it's no use to try and be precise
data.jumpPhase = 0;
}

7
src/cc/co/evenprime/bukkit/nocheat/data/MovingData.java
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@ -25,10 +25,7 @@ public class MovingData {
public int summaryTask = -1;
public Level highestLogLevel = null;
public double maxYVelocity = 0.0D;
public int sneakingFreedomCounter = 10;
public int swimmingFreedomCounter = 10;
public double sneakingLastDistance = 0.0D;
public double swimmingLastDistance = 0.0D;
public double runningThreshold = 0.0D;
public boolean insideVehicle = false;
@ -41,8 +38,6 @@ public class MovingData {
public Location teleportInitializedByMe = null;
public boolean firstEventAfterRespawn = false;
// Block types that may need to be treated specially
public static final int NONSOLID = 0; // 0x00000000
public static final int SOLID = 1; // 0x00000001