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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.
88 lines
5.5 KiB
Diff
88 lines
5.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Jason Penilla <11360596+jpenilla@users.noreply.github.com>
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Date: Thu, 20 Aug 2020 11:20:12 -0700
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Subject: [PATCH] Add Wandering Trader spawn rate config options
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Adds config options for modifying the spawn rates of Wandering Traders.
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These values are all easy to understand and configure after a quick read of this
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page on the Minecraft wiki: https://minecraft.wiki/wiki/Wandering_Trader#Spawning
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Usages of the vanilla WanderingTraderSpawnDelay and WanderingTraderSpawnChance values
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in IWorldServerData are removed as they were only used in certain places, with hardcoded
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values used in other places.
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diff --git a/src/main/java/net/minecraft/world/entity/npc/WanderingTraderSpawner.java b/src/main/java/net/minecraft/world/entity/npc/WanderingTraderSpawner.java
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index 4b7e9bc8aa253d0eb12a2195416c618cccdc8690..d5d27b0d352ca3fd57a26605cb35c499e88b57fc 100644
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--- a/src/main/java/net/minecraft/world/entity/npc/WanderingTraderSpawner.java
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+++ b/src/main/java/net/minecraft/world/entity/npc/WanderingTraderSpawner.java
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@@ -40,43 +40,53 @@ public class WanderingTraderSpawner implements CustomSpawner {
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public WanderingTraderSpawner(ServerLevelData properties) {
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this.serverLevelData = properties;
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- this.tickDelay = 1200;
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- this.spawnDelay = properties.getWanderingTraderSpawnDelay();
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- this.spawnChance = properties.getWanderingTraderSpawnChance();
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- if (this.spawnDelay == 0 && this.spawnChance == 0) {
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- this.spawnDelay = 24000;
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- properties.setWanderingTraderSpawnDelay(this.spawnDelay);
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- this.spawnChance = 25;
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- properties.setWanderingTraderSpawnChance(this.spawnChance);
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- }
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+ // Paper start - Add Wandering Trader spawn rate config options
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+ this.tickDelay = Integer.MIN_VALUE;
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+ //this.spawnDelay = properties.getWanderingTraderSpawnDelay(); // Paper - This value is read from the world file only for the first spawn, after which vanilla uses a hardcoded value
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+ //this.spawnChance = properties.getWanderingTraderSpawnChance(); // Paper - This value is read from the world file only for the first spawn, after which vanilla uses a hardcoded value
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+ //if (this.spawnDelay == 0 && this.spawnChance == 0) {
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+ // this.spawnDelay = 24000;
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+ // properties.setWanderingTraderSpawnDelay(this.spawnDelay);
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+ // this.spawnChance = 25;
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+ // properties.setWanderingTraderSpawnChance(this.spawnChance);
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+ //}
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+ // Paper end - Add Wandering Trader spawn rate config options
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}
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@Override
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public int tick(ServerLevel world, boolean spawnMonsters, boolean spawnAnimals) {
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+ // Paper start - Add Wandering Trader spawn rate config options
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+ if (this.tickDelay == Integer.MIN_VALUE) {
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+ this.tickDelay = world.paperConfig().entities.spawning.wanderingTrader.spawnMinuteLength;
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+ this.spawnDelay = world.paperConfig().entities.spawning.wanderingTrader.spawnDayLength;
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+ this.spawnChance = world.paperConfig().entities.spawning.wanderingTrader.spawnChanceMin;
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+ }
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if (!world.getGameRules().getBoolean(GameRules.RULE_DO_TRADER_SPAWNING)) {
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return 0;
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- } else if (--this.tickDelay > 0) {
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+ } else if (this.tickDelay - 1 > 0) {
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+ this.tickDelay = this.tickDelay - 1;
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return 0;
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} else {
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- this.tickDelay = 1200;
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- this.spawnDelay -= 1200;
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- this.serverLevelData.setWanderingTraderSpawnDelay(this.spawnDelay);
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+ this.tickDelay = world.paperConfig().entities.spawning.wanderingTrader.spawnMinuteLength;
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+ this.spawnDelay = this.spawnDelay - world.paperConfig().entities.spawning.wanderingTrader.spawnMinuteLength;
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+ //this.serverLevelData.setWanderingTraderSpawnDelay(this.spawnDelay); // Paper - We don't need to save this value to disk if it gets set back to a hardcoded value anyways
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if (this.spawnDelay > 0) {
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return 0;
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} else {
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- this.spawnDelay = 24000;
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+ this.spawnDelay = world.paperConfig().entities.spawning.wanderingTrader.spawnDayLength;
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if (!world.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING)) {
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return 0;
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} else {
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int i = this.spawnChance;
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- this.spawnChance = Mth.clamp(this.spawnChance + 25, 25, 75);
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- this.serverLevelData.setWanderingTraderSpawnChance(this.spawnChance);
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+ // this.serverLevelData.setWanderingTraderSpawnChance(this.spawnChance); // Paper - We don't need to save this value to disk if it gets set back to a hardcoded value anyways
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+ this.spawnChance = Mth.clamp(i + world.paperConfig().entities.spawning.wanderingTrader.spawnChanceFailureIncrement, world.paperConfig().entities.spawning.wanderingTrader.spawnChanceMin, world.paperConfig().entities.spawning.wanderingTrader.spawnChanceMax);
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if (this.random.nextInt(100) > i) {
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return 0;
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} else if (this.spawn(world)) {
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- this.spawnChance = 25;
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+ this.spawnChance = world.paperConfig().entities.spawning.wanderingTrader.spawnChanceMin;
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+ // Paper end - Add Wandering Trader spawn rate config options
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return 1;
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} else {
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return 0;
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