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89d51d5f29
Because this exploit has been widely known for years and has not been fixed by Mojang, we decided that it was worth allowing people to toggle it on/off due to how easy it is to make it configurable. It should be noted that this decision does not promise all future exploits will be configurable.
38 lines
1.9 KiB
Diff
38 lines
1.9 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Nassim Jahnke <nassim@njahnke.dev>
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Date: Thu, 25 Nov 2021 10:25:09 +0100
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Subject: [PATCH] Prevent excessive velocity through repeated crits
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diff --git a/src/main/java/net/minecraft/world/entity/LivingEntity.java b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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index 18804ea960f8423d172d9119c0739226a18d4d56..d4abce0b715d5eda99505fa0e29eeab20b538fd9 100644
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--- a/src/main/java/net/minecraft/world/entity/LivingEntity.java
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+++ b/src/main/java/net/minecraft/world/entity/LivingEntity.java
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@@ -2697,13 +2697,26 @@ public abstract class LivingEntity extends Entity implements Attackable {
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return this.hasEffect(MobEffects.JUMP) ? 0.1F * ((float) this.getEffect(MobEffects.JUMP).getAmplifier() + 1.0F) : 0.0F;
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}
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+ protected long lastJumpTime = 0L; // Paper - Prevent excessive velocity through repeated crits
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protected void jumpFromGround() {
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Vec3 vec3d = this.getDeltaMovement();
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+ // Paper start - Prevent excessive velocity through repeated crits
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+ long time = System.nanoTime();
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+ boolean canCrit = true;
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+ if (this instanceof net.minecraft.world.entity.player.Player) {
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+ canCrit = false;
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+ if (time - this.lastJumpTime > (long)(0.250e9)) {
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+ this.lastJumpTime = time;
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+ canCrit = true;
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+ }
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+ }
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+ // Paper end - Prevent excessive velocity through repeated crits
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this.setDeltaMovement(vec3d.x, (double) this.getJumpPower(), vec3d.z);
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if (this.isSprinting()) {
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float f = this.getYRot() * 0.017453292F;
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+ if (canCrit) // Paper - Prevent excessive velocity through repeated crits
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this.setDeltaMovement(this.getDeltaMovement().add((double) (-Mth.sin(f) * 0.2F), 0.0D, (double) (Mth.cos(f) * 0.2F)));
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}
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