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Reduce false positives with jumping almost onto block edges.

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Also begin to rearrange lostground workaround checking.
This commit is contained in:
asofold 2013-02-27 21:04:12 +01:00
parent 9d1f7924b9
commit e0c6e9ebdd
1 changed files with 46 additions and 41 deletions
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87
NCPPlugin/src/main/java/fr/neatmonster/nocheatplus/checks/moving/SurvivalFly.java
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@ -103,7 +103,7 @@ public class SurvivalFly extends Check {
// "Lost ground" workaround.
if (fromOnGround || from.isResetCond()) resetFrom = true;
else if (lostGround(player, from, to, yDistance, sprinting, data, cc)){
else if (lostGround(player, from, to, hDistance, yDistance, sprinting, data, cc)){
// TODO: Consider && !resetTo ?
// TODO: Confine by max y distance and min xz-distance?
resetFrom = true;
@ -480,27 +480,29 @@ public class SurvivalFly extends Check {
* @param cc
* @return
*/
private boolean lostGround(final Player player, final PlayerLocation from, final PlayerLocation to, final double yDistance, final boolean sprinting, final MovingData data, final MovingConfig cc) {
// Don't set "useWorkaround = x()", to avoid potential trouble with
// reordering to come, and similar.
boolean useWorkaround = false;
boolean setBackSafe = false; // Let compiler remove this if necessary.
private boolean lostGround(final Player player, final PlayerLocation from, final PlayerLocation to, final double hDistance, final double yDistance, final boolean sprinting, final MovingData data, final MovingConfig cc) {
// TODO: fast exclusion returns.
// TODO: order checks such that most frequent match comes first.
// TODO: re-organize for faster exclusions (hDistance, yDistance).
// Check for moving off stairs.
if (!useWorkaround && from.isAboveStairs()) {
if (from.isAboveStairs()) {
// TODO: This needs some safety guards.
useWorkaround = true;
setBackSafe = true;
return applyWorkaround(player, from, true, data);
}
// Check for "lost touch", for when moving events are missing somehow.
// Half block step up.
if (!useWorkaround && yDistance > 0 && yDistance <= 0.5 && to.isOnGround() && from.isOnGround(0.5 - Math.abs(yDistance))){
useWorkaround = true;
setBackSafe = true;
if (yDistance >= 0 && yDistance <= 0.5 && hDistance < 0.5 && to.isOnGround()){
// TODO: Also confine concerning hDist !
if (data.sfLastYDist < 0 || from.isOnGround(0.5 - Math.abs(yDistance))){
return applyWorkaround(player, from, true, data);
}
}
final double setBackYDistance = to.getY() - data.getSetBackY();
// Check for sprinting down blocks etc.
if (!useWorkaround && yDistance <= 0.0 && Math.abs(yDistance) <= 0.5 && data.sfLastYDist <= yDistance && data.sfJumpPhase <= 7 && setBackYDistance < 0 && !to.isOnGround()){
if (yDistance <= 0.0 && Math.abs(yDistance) <= 0.5 && data.sfLastYDist <= yDistance && data.sfJumpPhase <= 7 && setBackYDistance < 0 && !to.isOnGround()){
// TODO: setbackydist: <= - 1.0 or similar
// TODO: <= 7 might work with speed II, not sure with above.
// TODO: account for speed/sprint
@ -508,18 +510,16 @@ public class SurvivalFly extends Check {
if (from.isOnGround(0.6, 0.4, 0, 0L) ){
// TODO: further narrow down bounds ?
// Temporary "fix".
useWorkaround = true;
setBackSafe = true;
return applyWorkaround(player, from, true, data);
}
}
// Check for jumping up strange blocks like flower pots on top of other blocks.
if (!useWorkaround && yDistance == 0 && data.sfLastYDist > 0 && data.sfLastYDist < 0.25 && data.sfJumpPhase <= 6 + data.jumpAmplifier * 3 && setBackYDistance > 1.0 && setBackYDistance < 1.5 + 0.2 * data.jumpAmplifier && !to.isOnGround()){
if (yDistance == 0 && data.sfLastYDist > 0 && data.sfLastYDist < 0.25 && data.sfJumpPhase <= 6 + data.jumpAmplifier * 3 && setBackYDistance > 1.0 && setBackYDistance < 1.5 + 0.2 * data.jumpAmplifier && !to.isOnGround()){
// TODO: confine by block types ?
if (from.isOnGround(0.25, 0.4, 0, 0L) ){
// Temporary "fix".
useWorkaround = true;
setBackSafe = true;
return applyWorkaround(player, from, true, data);
}
}
@ -527,7 +527,7 @@ public class SurvivalFly extends Check {
// TODO: Check if the set-back distance still has relevance.
// TODO: Interpolation might also be necessary between from and to !
// TODO: Check use of jumpamplifier.
if (!useWorkaround && data.fromX != Double.MAX_VALUE && yDistance > 0 && yDistance <= 0.5 + 0.2 * data.jumpAmplifier && data.sfLastYDist < 0 && !to.isOnGround()) {
if (data.fromX != Double.MAX_VALUE && yDistance > 0 && yDistance <= 0.5 + 0.2 * data.jumpAmplifier && data.sfLastYDist < 0 && !to.isOnGround()) {
// TODO: Check if last-y-dist or sprinting should be considered.
if (setBackYDistance > 0D && setBackYDistance <= 1.5D + 0.2 * data.jumpAmplifier || setBackYDistance < 0 && Math.abs(setBackYDistance) < 3.0) {
// Interpolate from last to-coordinates to the from
@ -545,33 +545,38 @@ public class SurvivalFly extends Check {
// TODO: Might set margin higher depending on distance to 0 of block and last y distance etc.
// TODO: check with iY + 0.25 removed.
if (BlockProperties.isOnGround(from.getBlockCache(), Math.min(data.fromX, from.getX()) - r, iY - yMargin, Math.min(data.fromZ, from.getZ()) - r, Math.max(data.fromX, from.getX()) + r, iY + 0.25, Math.max(data.fromZ, from.getZ()) + r, 0L)) {
useWorkaround = true;
setBackSafe = true;
return applyWorkaround(player, from, true, data);
}
}
}
}
if (useWorkaround) { // !toOnGround && to.isAboveStairs()) {
// Set the new setBack and reset the jumpPhase.
// TODO: Some interpolated position ?
// TODO: (Task list: sharpen when this is used, might remove isAboveStairs!)
if (setBackSafe) data.setSetBack(from);
else{
// TODO: This seems dubious !
// Consider: 1.0 + ? or max(from.getY(), 1.0 + ...) ?
data.setSetBackY(Location.locToBlock(data.getSetBackY()));
}
// data.ground ?
// ? set jumpphase to height / 0.15 ?
data.sfJumpPhase = 0;
data.jumpAmplifier = mcAccess.getJumpAmplifier(player);
data.clearAccounting();
// Tell NoFall that we assume the player to have been on ground somehow.
data.noFallAssumeGround = true;
tags.add("lostground");
return true;
// Nothing found.
return false;
}
/**
*
* @return true.
*/
private boolean applyWorkaround(final Player player, final PlayerLocation from, final boolean setBackSafe, final MovingData data){
// Set the new setBack and reset the jumpPhase.
// TODO: Some interpolated position ?
// TODO: (Task list: sharpen when this is used, might remove isAboveStairs!)
if (setBackSafe) data.setSetBack(from);
else{
// TODO: This seems dubious !
// Consider: 1.0 + ? or max(from.getY(), 1.0 + ...) ?
data.setSetBackY(Location.locToBlock(data.getSetBackY()));
}
else return false;
// data.ground ?
// ? set jumpphase to height / 0.15 ?
data.sfJumpPhase = 0;
data.jumpAmplifier = mcAccess.getJumpAmplifier(player);
data.clearAccounting();
// Tell NoFall that we assume the player to have been on ground somehow.
data.noFallAssumeGround = true;
tags.add("lostground");
return true;
}
/**