Micro-optimizations

src/main/java/com/ishland/vmp/mixins/chunk/ticking/MixinServerWorld.java

@@ -0,0 +1,19 @@
+package com.ishland.vmp.mixins.chunk.ticking;
+
+import net.minecraft.server.world.ServerWorld;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.world.Heightmap;
+import net.minecraft.world.chunk.WorldChunk;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(ServerWorld.class)
+public class MixinServerWorld {
+
+    @Redirect(method = "tickChunk", at = @At(value = "INVOKE", target = "Lnet/minecraft/server/world/ServerWorld;getTopPosition(Lnet/minecraft/world/Heightmap$Type;Lnet/minecraft/util/math/BlockPos;)Lnet/minecraft/util/math/BlockPos;"))
+    private BlockPos redirectGetTopPosition(ServerWorld instance, Heightmap.Type type, BlockPos blockPos, WorldChunk chunk, int randomTickSpeed) {
+        return blockPos.withY(chunk.sampleHeightmap(type, blockPos.getX(), blockPos.getZ()) + 1);
+    }
+
+}

src/main/resources/vmp.mixins.json

@@ -33,6 +33,7 @@
     "chunk.loading.portals.MixinEntity",
     "chunk.sending.MixinThreadedAnvilChunkStorage",
     "chunk.sending.c2me_notickvd_compat.MixinNoTickChunkSendingInterceptor",
+    "chunk.ticking.MixinServerWorld",
     "entity.move_zero_velocity.MixinEntity",
     "entitytracker.MixinEntityTrackerEntry",
     "entitytracker.MixinThreadedAnvilChunkStorage",