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SakuraMC/patches/server/0017-Store-Entity-Data-State.patch
Samsuik 2570c66290 start fresh with commit history
dw, they're kept up on a private repository
2023-10-17 22:36:39 +01:00

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4.5 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..c9f2c5ae57878283e8c8bc3847fe63b98f4e8d10
--- /dev/null
+++ b/src/main/java/me/samsuik/sakura/entity/EntityState.java
@@ -0,0 +1,41 @@
+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(position);
+ entity.setDeltaMovement(momentum);
+ entity.setBoundingBox(bb);
+ // null here is only safe for our use case (tnt and sand)
+ //noinspection DataFlowIssue
+ entity.makeStuckInBlock(null, stuckSpeed);
+ entity.onGround = onGround;
+ entity.mainSupportingBlockPos = supportingPos;
+ entity.fallDistance = fallDistance;
+ }
+
+ public void position(Entity entity) {
+ entity.setPos(position);
+ entity.setBoundingBox(bb);
+ }
+
+ public boolean isCurrentState(Entity entity) {
+ return entity.position().equals(position)
+ && entity.getDeltaMovement().equals(momentum);
+ // 1.14+ versions seem to correct morphed bounding boxes after a gametick.
+ // If there are any related issues uncomment this line of code.
+ // && entity.getBoundingBox().equals(bb);
+ }
+
+}
diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 217eba9f4860cf1e67d307ba8cdb99430c7469f8..7e906ad87ae48942445b6ad1fa22ab9442c8943e 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -531,6 +531,34 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource {
// Paper end - make end portalling safe
public boolean isPrimedTNT; // Sakura
public boolean isFallingBlock; // Sakura
+ // Sakura start - entity state (from start of tick)
+ private @Nullable me.samsuik.sakura.entity.EntityState entityState = null;
+
+ public Vec3 stuckSpeedMultiplier() {
+ return stuckSpeedMultiplier;
+ }
+
+ public void storeEntityState() {
+ entityState = me.samsuik.sakura.entity.EntityState.of(this);
+ }
+
+ public @Nullable me.samsuik.sakura.entity.EntityState entityState() {
+ return entityState;
+ }
+
+ public boolean compareState(Entity to) {
+ return to.entityState() != null && to.entityState().isCurrentState(this);
+ }
+
+ public long getPackedOrigin() {
+ var v = getOriginVector();
+ if (v == null) return Long.MIN_VALUE;
+ // Note: vector#getBlockN may not be 100% exact
+ // If there's any future issues at let's say 0.999999...
+ // giving an incorrect position change it to Mth instead.
+ return BlockPos.asLong(v.getBlockX(), v.getBlockY(), v.getBlockZ());
+ }
+ // Sakura end
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 a29d41bf162c923e3b3b15e7500e0c8693908866..6d9a15a1c1faff57103757b6ff71f38e4713ef71 100644
--- a/src/main/java/net/minecraft/world/level/Level.java
+++ b/src/main/java/net/minecraft/world/level/Level.java
@@ -1325,6 +1325,7 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
public <T extends Entity> void guardEntityTick(Consumer<T> tickConsumer, T entity) {
try {
+ entity.storeEntityState(); // Sakura - store entity state
tickConsumer.accept(entity);
MinecraftServer.getServer().executeMidTickTasks(); // Paper - execute chunk tasks mid tick
} catch (Throwable throwable) {