Skip sprinting particle creation server side

build.gradle

@@ -99,7 +99,7 @@ dependencies {
     mappings "net.fabricmc:yarn:${project.yarn_mappings}:v2"
 
     modImplementation "net.fabricmc:fabric-loader:${project.loader_version}"
-    modImplementation 'com.github.2No2Name:McTester:v0.3.3'
+//    modImplementation 'com.github.2No2Name:McTester:v0.3.3'
 
     Set<String> fabricApiModulesCompileOnly = [
             "fabric-transfer-api-v1"

lithium-mixin-config.md

@@ -332,6 +332,10 @@ Accesses entities of the correct type directly instead of accessing all nearby e
 (default: `true`)  
 Skips repeated checks whether the equipment of an entity changed. Instead equipment updates are detected  
 
+### `mixin.entity.sprinting_particles`
+(default: `true`)  
+Skips trying to create sprinting particles for all entities on the server side.  
+
 ### `mixin.experimental`
 (default: `false`)  
 Various experimental optimizations  

src/main/java/me/jellysquid/mods/lithium/mixin/entity/sprinting_particles/EntityMixin.java

@@ -0,0 +1,26 @@
+package me.jellysquid.mods.lithium.mixin.entity.sprinting_particles;
+
+import net.minecraft.entity.Entity;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(Entity.class)
+public abstract class EntityMixin {
+
+    @Shadow
+    public abstract World getWorld();
+
+    @Redirect(
+            method = "baseTick",
+            at = @At(value = "INVOKE", target = "Lnet/minecraft/entity/Entity;shouldSpawnSprintingParticles()Z")
+    )
+    private boolean skipParticlesOnServerSide(Entity instance) {
+        if (instance.getWorld().isClient()) {
+            return instance.shouldSpawnSprintingParticles();
+        }
+        return false;
+    }
+}

src/main/java/me/jellysquid/mods/lithium/mixin/entity/sprinting_particles/package-info.java

@@ -0,0 +1,4 @@
+@MixinConfigOption(description = "Skips trying to create sprinting particles for all entities on the server side.")
+package me.jellysquid.mods.lithium.mixin.entity.sprinting_particles;
+
+import net.caffeinemc.gradle.MixinConfigOption;

src/main/resources/lithium.mixins.json

@@ -141,6 +141,7 @@
     "entity.skip_equipment_change_check.ArmorStandEntityMixin",
     "entity.skip_equipment_change_check.LivingEntityMixin",
     "entity.skip_equipment_change_check.MobEntityMixin",
+    "entity.sprinting_particles.EntityMixin",
     "experimental.chunk_tickets.ChunkTicketManagerMixin",
     "experimental.entity.block_caching.EntityMixin",
     "experimental.entity.block_caching.block_support.EntityMixin",