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SakuraMC/patches/server/0015-Store-Entity-Data-State.patch
2024-08-25 14:20:38 +01:00

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4.1 KiB
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Samsuik <40902469+Samsuik@users.noreply.github.com>
Date: Wed, 16 Aug 2023 22:34:49 +0100
Subject: [PATCH] Store Entity Data/State
diff --git a/src/main/java/me/samsuik/sakura/entity/EntityState.java b/src/main/java/me/samsuik/sakura/entity/EntityState.java
new file mode 100644
index 0000000000000000000000000000000000000000..10630c7e04a137ce766f4a45cb0f2e51bd967c98
--- /dev/null
+++ b/src/main/java/me/samsuik/sakura/entity/EntityState.java
@@ -0,0 +1,37 @@
+package me.samsuik.sakura.entity;
+
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.entity.Entity;
+import net.minecraft.world.phys.AABB;
+import net.minecraft.world.phys.Vec3;
+
+import java.util.Optional;
+
+public record EntityState(Vec3 position, Vec3 momentum, AABB bb, Vec3 stuckSpeed, Optional<BlockPos> supportingPos, boolean onGround, float fallDistance) {
+ public static EntityState of(Entity entity) {
+ return new EntityState(entity.position(), entity.getDeltaMovement(), entity.getBoundingBox(), entity.stuckSpeedMultiplier(), entity.mainSupportingBlockPos, entity.onGround(), entity.fallDistance);
+ }
+
+ public void apply(Entity entity) {
+ entity.setPos(this.position);
+ entity.setDeltaMovement(this.momentum);
+ entity.setBoundingBox(this.bb);
+ // null here is only safe for our use case (tnt and sand)
+ //noinspection DataFlowIssue
+ entity.makeStuckInBlock(null, this.stuckSpeed);
+ entity.onGround = this.onGround;
+ entity.mainSupportingBlockPos = this.supportingPos;
+ entity.fallDistance = this.fallDistance;
+ }
+
+ public void position(Entity entity) {
+ entity.setPos(this.position);
+ entity.setBoundingBox(this.bb);
+ }
+
+ public boolean isCurrentState(Entity entity) {
+ return entity.position().equals(this.position)
+ && entity.getDeltaMovement().equals(this.momentum);
+ // && entity.getBoundingBox().equals(bb); // uncomment if there are issues with morphed bounding boxes
+ }
+}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index f375728a95465bbcbb8581cb43e48fc0e6966858..4435e0cd1370f3720102734ac3647674d5f46730 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -567,6 +567,25 @@ public abstract class Entity implements SyncedDataHolder, Nameable, EntityAccess
return flags;
}
// Sakura end - load chunks on movement
+ // Sakura start - store entity data/state
+ private me.samsuik.sakura.entity.EntityState entityState = null;
+
+ public final Vec3 stuckSpeedMultiplier() {
+ return this.stuckSpeedMultiplier;
+ }
+
+ public final void storeEntityState() {
+ this.entityState = me.samsuik.sakura.entity.EntityState.of(this);
+ }
+
+ public final me.samsuik.sakura.entity.EntityState entityState() {
+ return this.entityState;
+ }
+
+ public final boolean compareState(Entity to) {
+ return to.entityState() != null && to.entityState().isCurrentState(this);
+ }
+ // Sakura end - store entity data/state
public Entity(EntityType<?> type, Level world) {
this.id = Entity.ENTITY_COUNTER.incrementAndGet();
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
index 5886f44fdc605d3b814566808d8477e09df2fd3b..7384c7f81e0f9bfe05c05561a1ec87f3fa17f010 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -1431,6 +1431,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable, ca.spottedl
public <T extends Entity> void guardEntityTick(Consumer<T> tickConsumer, T entity) {
try {
+ entity.storeEntityState(); // Sakura - store entity data/state
tickConsumer.accept(entity);
} catch (Throwable throwable) {
if (throwable instanceof ThreadDeath) throw throwable; // Paper