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c5a10665b8
Spigot still maintains some partial implementation of "tick skipping", a practice in which the MinecraftServer.currentTick field is updated not by an increment of one per actual tick, but instead set to System.currentTimeMillis() / 50. This behaviour means that the tracked tick may "skip" a tick value in case a previous tick took more than the expected 50ms. To compensate for this in important paths, spigot/craftbukkit implements "wall-time". Instead of incrementing/decrementing ticks on block entities/entities by one for each call to their tick() method, they instead increment/decrement important values, like an ItemEntity's age or pickupDelay, by the difference of `currentTick - lastTick`, where `lastTick` is the value of `currentTick` during the last tick() call. These "fixes" however do not play nicely with minecraft's simulation distance as entities/block entities implementing the above behaviour would "catch up" their values when moving from a non-ticking chunk to a ticking one as their `lastTick` value remains stuck on the last tick in a ticking chunk and hence lead to a large "catch up" once ticked again. Paper completely removes the "tick skipping" behaviour (See patch "Further-improve-server-tick-loop"), making the above precautions completely unnecessary, which also rids paper of the previous described incompatibility with non-ticking chunks.
76 lines
4.1 KiB
Diff
76 lines
4.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: BillyGalbreath <Blake.Galbreath@GMail.com>
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Date: Sat, 8 Feb 2020 23:26:11 -0600
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Subject: [PATCH] Entity Jump API
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== AT ==
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public net.minecraft.world.entity.LivingEntity jumping
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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 8ee6d25c3860fe7f2e5039c74c736d82eefda237..4c32b26e29ca3db0a2f62052e14bcc3e4c1cdea5 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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@@ -3433,8 +3433,10 @@ public abstract class LivingEntity extends Entity implements Attackable {
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} else if (this.isInLava() && (!this.onGround() || d3 > d4)) {
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this.jumpInLiquid(FluidTags.LAVA);
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} else if ((this.onGround() || flag && d3 <= d4) && this.noJumpDelay == 0) {
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+ if (new com.destroystokyo.paper.event.entity.EntityJumpEvent(getBukkitLivingEntity()).callEvent()) { // Paper - Entity Jump API
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this.jumpFromGround();
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this.noJumpDelay = 10;
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+ } else { this.setJumping(false); } // Paper - Entity Jump API; setJumping(false) stops a potential loop
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}
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} else {
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this.noJumpDelay = 0;
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diff --git a/src/main/java/net/minecraft/world/entity/animal/Panda.java b/src/main/java/net/minecraft/world/entity/animal/Panda.java
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index 228cfb77e12ed5979e422dc5dbb5e8dcf363b509..8df42121aa22ec9f95a1b8627b64b0ff71e36314 100644
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--- a/src/main/java/net/minecraft/world/entity/animal/Panda.java
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+++ b/src/main/java/net/minecraft/world/entity/animal/Panda.java
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@@ -541,7 +541,9 @@ public class Panda extends Animal {
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Panda entitypanda = (Panda) iterator.next();
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if (!entitypanda.isBaby() && entitypanda.onGround() && !entitypanda.isInWater() && entitypanda.canPerformAction()) {
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+ if (new com.destroystokyo.paper.event.entity.EntityJumpEvent(getBukkitLivingEntity()).callEvent()) { // Paper - Entity Jump API
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entitypanda.jumpFromGround();
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+ } else { this.setJumping(false); } // Paper - Entity Jump API; setJumping(false) stops a potential loop
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}
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}
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diff --git a/src/main/java/net/minecraft/world/entity/monster/Ravager.java b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
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index 4d91bc4b90a208fec789325dbcec8cc56d1a2a8b..aa4111eef22546f8aa630228c51ef5761c9b373b 100644
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--- a/src/main/java/net/minecraft/world/entity/monster/Ravager.java
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+++ b/src/main/java/net/minecraft/world/entity/monster/Ravager.java
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@@ -160,7 +160,9 @@ public class Ravager extends Raider {
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}
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if (!flag && this.onGround()) {
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+ if (new com.destroystokyo.paper.event.entity.EntityJumpEvent(getBukkitLivingEntity()).callEvent()) { // Paper - Entity Jump API
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this.jumpFromGround();
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+ } else { this.setJumping(false); } // Paper - Entity Jump API; setJumping(false) stops a potential loop
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}
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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index 97e76c3701c5e58ff5c8cd0f243efd7998f1c93d..b6238c327e91a52b77135290762feb8b1085fc7e 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftLivingEntity.java
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@@ -968,4 +968,20 @@ public class CraftLivingEntity extends CraftEntity implements LivingEntity {
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return org.bukkit.craftbukkit.CraftEquipmentSlot.getHand(this.getHandle().getUsedItemHand());
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}
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// Paper end - active item API
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+
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+ // Paper start - entity jump API
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+ @Override
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+ public boolean isJumping() {
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+ return getHandle().jumping;
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+ }
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+
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+ @Override
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+ public void setJumping(boolean jumping) {
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+ getHandle().setJumping(jumping);
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+ if (jumping && getHandle() instanceof Mob) {
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+ // this is needed to actually make a mob jump
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+ ((Mob) getHandle()).getJumpControl().jump();
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+ }
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+ }
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+ // Paper end - entity jump API
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}
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