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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.
48 lines
2.7 KiB
Diff
48 lines
2.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Owen1212055 <23108066+Owen1212055@users.noreply.github.com>
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Date: Wed, 6 Oct 2021 20:10:44 -0400
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Subject: [PATCH] Collision API
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diff --git a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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index f6dd8665b9f6e2a8ff396deba8a021e695bedf7e..3c1937b43b6834ae0ffdd8d22ac32a776bc7fb64 100644
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--- a/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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+++ b/src/main/java/org/bukkit/craftbukkit/CraftRegionAccessor.java
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@@ -543,5 +543,12 @@ public abstract class CraftRegionAccessor implements RegionAccessor {
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return this.getHandle().clip(new net.minecraft.world.level.ClipContext(start, end, net.minecraft.world.level.ClipContext.Block.COLLIDER, net.minecraft.world.level.ClipContext.Fluid.NONE, net.minecraft.world.phys.shapes.CollisionContext.empty())).getType() == net.minecraft.world.phys.HitResult.Type.MISS;
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}
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+
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+ @Override
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+ public boolean hasCollisionsIn(@org.jetbrains.annotations.NotNull org.bukkit.util.BoundingBox boundingBox) {
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+ net.minecraft.world.phys.AABB aabb = new net.minecraft.world.phys.AABB(boundingBox.getMinX(), boundingBox.getMinY(), boundingBox.getMinZ(), boundingBox.getMaxX(), boundingBox.getMaxY(), boundingBox.getMaxZ());
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+
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+ return !this.getHandle().noCollision(aabb);
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+ }
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// Paper end
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}
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diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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index 94051ae8ea93ab144f3767345b1cda0438d2afc6..f950102a324d07aeba260bfa82fe88728f2362e5 100644
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--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftEntity.java
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@@ -1193,4 +1193,20 @@ public abstract class CraftEntity implements org.bukkit.entity.Entity {
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return this.getHandle().noPhysics;
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}
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// Paper end - missing entity api
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+
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+ // Paper start - Collision API
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+ @Override
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+ public boolean collidesAt(@org.jetbrains.annotations.NotNull Location location) {
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+ net.minecraft.world.phys.AABB aabb = this.getHandle().getBoundingBoxAt(location.getX(), location.getY(), location.getZ());
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+
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+ return !this.getHandle().level().noCollision(this.getHandle(), aabb);
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+ }
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+
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+ @Override
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+ public boolean wouldCollideUsing(@org.jetbrains.annotations.NotNull BoundingBox boundingBox) {
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+ net.minecraft.world.phys.AABB aabb = new AABB(boundingBox.getMinX(), boundingBox.getMinY(), boundingBox.getMinZ(), boundingBox.getMaxX(), boundingBox.getMaxY(), boundingBox.getMaxZ());
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+
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+ return !this.getHandle().level().noCollision(this.getHandle(), aabb);
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+ }
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+ // Paper end - Collision API
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}
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