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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.
72 lines
3 KiB
Diff
72 lines
3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jake Potrebic <jake.m.potrebic@gmail.com>
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Date: Sat, 15 May 2021 22:11:11 -0700
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Subject: [PATCH] ItemStack repair check API
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diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
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index f833fcead688180daf7039e09dce46fde924043c..07de1316b65e71ab0a372f1a51ae3bc6953d6530 100644
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--- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
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+++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java
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@@ -526,6 +526,14 @@ public final class CraftMagicNumbers implements UnsafeValues {
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public int getProtocolVersion() {
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return net.minecraft.SharedConstants.getCurrentVersion().getProtocolVersion();
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}
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+
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+ @Override
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+ public boolean isValidRepairItemStack(org.bukkit.inventory.ItemStack itemToBeRepaired, org.bukkit.inventory.ItemStack repairMaterial) {
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+ if (!itemToBeRepaired.getType().isItem() || !repairMaterial.getType().isItem()) {
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+ return false;
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+ }
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+ return CraftMagicNumbers.getItem(itemToBeRepaired.getType()).isValidRepairItem(CraftItemStack.asNMSCopy(itemToBeRepaired), CraftItemStack.asNMSCopy(repairMaterial));
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+ }
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// Paper end
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@Override
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diff --git a/src/test/java/io/papermc/paper/util/ItemStackRepairCheckTest.java b/src/test/java/io/papermc/paper/util/ItemStackRepairCheckTest.java
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new file mode 100644
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index 0000000000000000000000000000000000000000..9f8abe2376f16aeffe4e9f90a2da04b7e3a55429
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--- /dev/null
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+++ b/src/test/java/io/papermc/paper/util/ItemStackRepairCheckTest.java
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@@ -0,0 +1,41 @@
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+package io.papermc.paper.util;
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+
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+import org.bukkit.Material;
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+import org.bukkit.inventory.ItemStack;
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+import org.bukkit.support.AbstractTestingBase;
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+import org.junit.jupiter.api.Test;
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+
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+import static org.junit.jupiter.api.Assertions.assertFalse;
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+import static org.junit.jupiter.api.Assertions.assertThrows;
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+import static org.junit.jupiter.api.Assertions.assertTrue;
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+
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+public class ItemStackRepairCheckTest extends AbstractTestingBase {
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+
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+ @Test
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+ public void testIsRepariableBy() {
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+ ItemStack diamondPick = new ItemStack(Material.DIAMOND_PICKAXE);
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+
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+ assertTrue(diamondPick.isRepairableBy(new ItemStack(Material.DIAMOND)), "diamond pick isn't repairable by a diamond");
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+ }
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+
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+ @Test
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+ public void testCanRepair() {
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+ ItemStack diamond = new ItemStack(Material.DIAMOND);
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+
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+ assertTrue(diamond.canRepair(new ItemStack(Material.DIAMOND_AXE)), "diamond can't repair a diamond axe");
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+ }
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+
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+ @Test
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+ public void testIsNotRepairableBy() {
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+ ItemStack notDiamondPick = new ItemStack(Material.ACACIA_SAPLING);
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+
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+ assertFalse(notDiamondPick.isRepairableBy(new ItemStack(Material.DIAMOND)), "acacia sapling is repairable by a diamond");
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+ }
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+
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+ @Test
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+ public void testCanNotRepair() {
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+ ItemStack diamond = new ItemStack(Material.DIAMOND);
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+
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+ assertFalse(diamond.canRepair(new ItemStack(Material.OAK_BUTTON)), "diamond can repair oak button");
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+ }
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+}
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