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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. |
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| .. | ||
| biome | ||
| block | ||
| border | ||
| chunk | ||
| dimension/end | ||
| entity | ||
| gameevent | ||
| levelgen | ||
| material | ||
| pathfinder | ||
| portal | ||
| redstone | ||
| saveddata/maps | ||
| storage | ||
| BaseCommandBlock.java.patch | ||
| BaseSpawner.java.patch | ||
| BlockGetter.java.patch | ||
| ChunkPos.java.patch | ||
| ClipContext.java.patch | ||
| EmptyBlockGetter.java.patch | ||
| EntityGetter.java.patch | ||
| GameRules.java.patch | ||
| Level.java.patch | ||
| LevelAccessor.java.patch | ||
| LevelReader.java.patch | ||
| LevelWriter.java.patch | ||
| NaturalSpawner.java.patch | ||
| PathNavigationRegion.java.patch | ||
| ServerExplosion.java.patch | ||
| ServerLevelAccessor.java.patch | ||
| StructureManager.java.patch | ||