Merge branch 'master' into 1.16

# Conflicts:
#	src/main/java/carpet/CarpetSettings.java
#	src/main/java/carpet/script/CarpetScriptServer.java
#	src/main/java/carpet/script/bundled/Module.java

docs/scarpet/Full.md

@@ -3154,25 +3154,23 @@ Optional shared shape attributes:
  in the form of `0xRRGGBBAA`, with the default of `-1`, so white opaque, or `0xFFFFFFFF`.
  * `player` - name or player entity to send the shape to. If specified, the shapes will appear only for the specified
  player, otherwise it will be send to all players in the dimension.
+ * `width` - line thickness, defaults to 2.0pt
+ * `fill` - color for the faces, defaults to no fill. Use `color` attribute format
+ * `follow` - entity, or player name. Shape will follow an entity instead of being static.
+   Follow attribute requires all positional arguments to be relative to the entity and disallow
+   of using entity or block as position markers. You must specify positions as a triple.
 
 Available shapes:
  * `'line'` - draws a straight line between two points
    * Required attributes:
      * `from` - triple coordinates, entity, or block value indicating one end of the line
      * `to` - other end of the line, same format as `from`
-   * Optional attributes:
-     * `width` - line thickness, defaults to 2.0pt
-     * `follow` - entity, or player name. Shape will follow an entity instead of being static.
-     Follow attribute requires all positional arguments to be relative to the entity and disallow
-     of using entity or block as position markers. You must specify positions as a triple.
      
  * `'box'` - draws a box with corners in specified points
    * Required attributes:
      * `from` - triple coordinates, entity, or block value indicating one corner of the box
      * `to` - other corner, same format as `from`
-   * Optional attributes:
-     * `width` - mesh line thickness, defaults to 2.0pt
-     * `fill` - color for the box faces, defaults to no fill, use shared color attribute format
+
  * `'sphere'` - draws a sphere
    * Required attributes:
      * `center` - center of the sphere
@@ -3180,7 +3178,6 @@ Available shapes:
    * Optional attributes:
      * `level` - level of details, or grid size. The more the denser your sphere. Default level of 0, means that the
       level of detail will be selected automatically based on radius.
-     * `width` - line thickness
 
 ### `create_marker(text, pos, rotation?, block?)`
 
@@ -3269,6 +3266,63 @@ Example usages:
 
 Prints the message to system logs, and not to chat.
 
+### read_file(resource, type)
+### delete_file(resource, type)
+### write_file(resource, type, data, ...)
+
+With the specified `resource` in the scripts folder, of a specific `type`, writes/appends `data` to it, reads its
+ content, or deletes the resource.
+
+Resource is identified by a path to the file.  
+A path can contain letters, numbers and folder separator: `'/'`. Any other characters are stripped
+from the name. Empty descriptors are invalid. Do not add file extensions to the descriptor - extensions are inferred
+based on the `type` of the file.
+ 
+Resources can be located in the app specific space, or a shared space for all the apps. Accessing of app-specific
+resources is guaranteed to be isolated from other apps. Shared resources are... well, shared across all apes, meaning
+they can eat of each others file, however all access to files is synchronized, and files are never left open, so
+this should not lead to any access problems.
+
+If the app's name is `'foo'`, the script location would
+be `world/scripts/foo.sc`, app
+specific data directory is under `world/scripts/foo.data/...`, and shared data space is under
+`world/scripts/shared/...`.
+
+The default no-name app, via `/script run` command can only save/load/read files from the shared space.
+
+Functions return `null` if an error is encounter or no file is present (for read and delete operations). Returns `true`
+for success writes and deletes, and requested data, based on the file type, for read operations.
+
+NBT files can be written once as they an store one tag at a time. Consecutive writes will overwrite previous data.
+
+Write operations to text files always result in appending to the existing file, so consecutive writes will increase
+the size of the file and add data to it. Since files are closed after each write, sending multiple lines of data to
+write is beneficial for writing speed. To send multiple packs of data, either provide them flat or as a list in the
+third argument.
+ * `write_file('temp', 'text', 'foo', 'bar', 'baz')` or
+ * write_file('temp', 'text', l('foo', 'bar', 'baz'))
+ 
+To log a single line of string
+ 
+Supported values for resource `type` is:
+ * `nbt` - NBT tag
+ * `text` - text resource with automatic newlines added
+ * `raw` - text resource without implied newlines
+ * `shared_nbt`, `shared_text`, `shared_raw` - shared versions of the above
+ 
+NBT files have extension `.nbt`, store one NBT tag, and return a NBT type value. Text files have `.txt` extension, 
+stores multiple lines of text and returns lists of all lines from the file. With `write_file`, multiple lines can be
+sent to the file at once. The only difference between `raw` and `text` types are automatic newlines added after each
+record to the file.
+
+<pre>
+write_file('foo', 'shared_text, l('one', 'two'));
+write_file('foo', 'shared_text', 'three\n', 'four\n');
+write_file('foo', 'shared_raw', 'five\n', 'six\n');
+
+read_file('foo', 'shared_text')     => ['one', 'two', 'three', '', 'four', '', 'five', 'six']
+</pre>
+  
 ### `run(expr)`
 
 Runs a vanilla command from the string result of the `expr` and returns its success count
@@ -3283,7 +3337,10 @@ run('give @s stone 4') -> 1 // this operation was successful once
 Performs autosave, saves all chunks, player data, etc. Useful for programs where autosave is disabled due to 
 performance reasons and saves the world only on demand.
 
-### `load_app_data(), load_app_data(file), load_app_data(file, shared?)`
+### `load_app_data()`
+
+NOTE: usages with arguments, so `load_app_data(file)` and `load_app_data(file, shared?)` are deprecated.
+Use `read_file` instead.
 
 Loads the app data associated with the app from the world /scripts folder. Without argument returns the memory 
 managed and buffered / throttled NBT tag. With a file name, reads explicitly a file with that name from the 
@@ -3291,7 +3348,7 @@ scripts folder that belongs exclusively to the app. if `shared` is true, the fil
 to the app anymore, but located in a shared app space. 
 
 File descriptor can contain letters, numbers and folder separator: `'/'`. Any other characters are stripped
-from the name before saving/loading. Empty descriptors are invalid.
+from the name before saving/loading. Empty descriptors are invalid. Do not add file extensions to the descriptor
 
 Function returns nbt value with the file content, or `null` if the file is missing or there were problems
 with retrieving the data.
@@ -3305,7 +3362,9 @@ specific data directory is under `world/scripts/foo.data/bar/../baz.nbt`, and sh
 
 You can use app data to save non-vanilla information separately from the world and other scripts.
 
-### `store_app_data(tag), store_app_data(tag, file), store_app_data(tag, file, shared?)`
+### `store_app_data(tag)`
+
+Note:  `store_app_data(tag, file)` and `store_app_data(tag, file, shared?)` usages deprecated. Use `write_file` instead.
 
 Stores the app data associated with the app from the world `/scripts` folder. With the `file` parameter saves 
 immediately and with every call to a specific file defined by the `file`, either in app space, or in the scripts

docs/scarpet/api/Auxiliary.md

@@ -172,6 +172,63 @@ Example usages:
 
 Prints the message to system logs, and not to chat.
 
+### read_file(resource, type)
+### delete_file(resource, type)
+### write_file(resource, type, data, ...)
+
+With the specified `resource` in the scripts folder, of a specific `type`, writes/appends `data` to it, reads its
+ content, or deletes the resource.
+
+Resource is identified by a path to the file.  
+A path can contain letters, numbers and folder separator: `'/'`. Any other characters are stripped
+from the name. Empty descriptors are invalid. Do not add file extensions to the descriptor - extensions are inferred
+based on the `type` of the file.
+ 
+Resources can be located in the app specific space, or a shared space for all the apps. Accessing of app-specific
+resources is guaranteed to be isolated from other apps. Shared resources are... well, shared across all apes, meaning
+they can eat of each others file, however all access to files is synchronized, and files are never left open, so
+this should not lead to any access problems.
+
+If the app's name is `'foo'`, the script location would
+be `world/scripts/foo.sc`, app
+specific data directory is under `world/scripts/foo.data/...`, and shared data space is under
+`world/scripts/shared/...`.
+
+The default no-name app, via `/script run` command can only save/load/read files from the shared space.
+
+Functions return `null` if an error is encounter or no file is present (for read and delete operations). Returns `true`
+for success writes and deletes, and requested data, based on the file type, for read operations.
+
+NBT files can be written once as they an store one tag at a time. Consecutive writes will overwrite previous data.
+
+Write operations to text files always result in appending to the existing file, so consecutive writes will increase
+the size of the file and add data to it. Since files are closed after each write, sending multiple lines of data to
+write is beneficial for writing speed. To send multiple packs of data, either provide them flat or as a list in the
+third argument.
+ * `write_file('temp', 'text', 'foo', 'bar', 'baz')` or
+ * write_file('temp', 'text', l('foo', 'bar', 'baz'))
+ 
+To log a single line of string
+ 
+Supported values for resource `type` is:
+ * `nbt` - NBT tag
+ * `text` - text resource with automatic newlines added
+ * `raw` - text resource without implied newlines
+ * `shared_nbt`, `shared_text`, `shared_raw` - shared versions of the above
+ 
+NBT files have extension `.nbt`, store one NBT tag, and return a NBT type value. Text files have `.txt` extension, 
+stores multiple lines of text and returns lists of all lines from the file. With `write_file`, multiple lines can be
+sent to the file at once. The only difference between `raw` and `text` types are automatic newlines added after each
+record to the file.
+
+<pre>
+write_file('foo', 'shared_text, l('one', 'two'));
+write_file('foo', 'shared_text', 'three\n', 'four\n');
+write_file('foo', 'shared_raw', 'five\n', 'six\n');
+
+read_file('foo', 'shared_text')     => ['one', 'two', 'three', '', 'four', '', 'five', 'six']
+</pre>
+  
 ### `run(expr)`
 
 Runs a vanilla command from the string result of the `expr` and returns its success count
@@ -186,7 +243,10 @@ run('give @s stone 4') -> 1 // this operation was successful once
 Performs autosave, saves all chunks, player data, etc. Useful for programs where autosave is disabled due to 
 performance reasons and saves the world only on demand.
 
-### `load_app_data(), load_app_data(file), load_app_data(file, shared?)`
+### `load_app_data()`
+
+NOTE: usages with arguments, so `load_app_data(file)` and `load_app_data(file, shared?)` are deprecated.
+Use `read_file` instead.
 
 Loads the app data associated with the app from the world /scripts folder. Without argument returns the memory 
 managed and buffered / throttled NBT tag. With a file name, reads explicitly a file with that name from the 
@@ -194,7 +254,7 @@ scripts folder that belongs exclusively to the app. if `shared` is true, the fil
 to the app anymore, but located in a shared app space. 
 
 File descriptor can contain letters, numbers and folder separator: `'/'`. Any other characters are stripped
-from the name before saving/loading. Empty descriptors are invalid.
+from the name before saving/loading. Empty descriptors are invalid. Do not add file extensions to the descriptor
 
 Function returns nbt value with the file content, or `null` if the file is missing or there were problems
 with retrieving the data.
@@ -208,7 +268,9 @@ specific data directory is under `world/scripts/foo.data/bar/../baz.nbt`, and sh
 
 You can use app data to save non-vanilla information separately from the world and other scripts.
 
-### `store_app_data(tag), store_app_data(tag, file), store_app_data(tag, file, shared?)`
+### `store_app_data(tag)`
+
+Note:  `store_app_data(tag, file)` and `store_app_data(tag, file, shared?)` usages deprecated. Use `write_file` instead.
 
 Stores the app data associated with the app from the world `/scripts` folder. With the `file` parameter saves 
 immediately and with every call to a specific file defined by the `file`, either in app space, or in the scripts

src/main/java/carpet/CarpetServer.java

@@ -57,7 +57,7 @@ public class CarpetServer // static for now - easier to handle all around the co
             if (sm != null) sm.attachServer(server);
             e.onServerLoaded(server);
         });
-        scriptServer = new CarpetScriptServer();
+        scriptServer = new CarpetScriptServer(server);
         scriptServer.loadAllWorldScripts();
         MobAI.resetTrackers();
         LoggerRegistry.initLoggers();

src/main/java/carpet/CarpetSettings.java

@@ -498,8 +498,8 @@ public class CarpetSettings
             if (server.isDedicated())
             {
                 int vd = (newValue >= 2)?newValue:((DedicatedServer) server).getProperties().viewDistance;
-                if (vd != CarpetServer.minecraft_server.getPlayerManager().getViewDistance())
-                    CarpetServer.minecraft_server.getPlayerManager().setViewDistance(vd);
+                if (vd != server.getPlayerManager().getViewDistance())
+                    server.getPlayerManager().setViewDistance(vd);
                 return newValue;
             }
             else
@@ -546,6 +546,7 @@ public class CarpetSettings
                 //must been some startup thing
                 return newValue;
             }
+            if (CarpetServer.minecraft_server == null) return newValue;
             ServerWorld currentOverworld = CarpetServer.minecraft_server.getWorld(World.OVERWORLD); // OW
             if (currentOverworld != null)
             {

src/main/java/carpet/commands/SpawnCommand.java

@@ -16,6 +16,7 @@ import net.minecraft.command.arguments.DimensionArgumentType;
 import net.minecraft.entity.SpawnGroup;
 import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.util.DyeColor;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.registry.RegistryKey;
@@ -197,7 +198,7 @@ public class SpawnCommand
         TickSpeed.tickrate_advance(null, 0, null, null);
         // tick warp given player
         ServerCommandSource csource = null;
-        PlayerEntity player = null;
+        ServerPlayerEntity player = null;
         try
         {
             player = source.getPlayer();

src/main/java/carpet/commands/TickCommand.java

@@ -9,6 +9,7 @@ import com.mojang.brigadier.CommandDispatcher;
 import com.mojang.brigadier.builder.LiteralArgumentBuilder;
 import com.mojang.brigadier.exceptions.CommandSyntaxException;
 import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.BaseText;
 import net.minecraft.server.command.ServerCommandSource;
 
@@ -80,7 +81,7 @@ public class TickCommand
 
     private static int setWarp(ServerCommandSource source, int advance, String tail_command)
     {
-        PlayerEntity player = null;
+        ServerPlayerEntity player = null;
         try
         {
             player = source.getPlayer();

src/main/java/carpet/helpers/OptimizedExplosion.java

@@ -7,8 +7,10 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
+import carpet.logging.logHelpers.ExplosionLogHelper;
 import carpet.mixins.ExplosionAccessor;
 import carpet.CarpetSettings;
+import carpet.mixins.ExplosionMixin;
 import carpet.utils.Messenger;
 import com.google.common.collect.Lists;
 import it.unimi.dsi.fastutil.objects.Object2DoubleOpenHashMap;
@@ -51,6 +53,7 @@ public class OptimizedExplosion
     private static List<Entity> entitylist;
     private static Vec3d vec3dmem;
     private static long tickmem;
+    private static Vec3d vec3dZero = new Vec3d(0, 0, 0);
     // For disabling the explosion particles and sound
     public static int explosionSound = 0;
 
@@ -66,7 +69,7 @@ public class OptimizedExplosion
     private static ArrayList<Float> chances = new ArrayList<>();
     private static BlockPos blastChanceLocation;
 
-    public static void doExplosionA(Explosion e) {
+    public static void doExplosionA(Explosion e, ExplosionLogHelper eLogger) {
         ExplosionAccessor eAccess = (ExplosionAccessor) e;
         
         blastCalc(e);
@@ -120,6 +123,9 @@ public class OptimizedExplosion
                     entity.getX() == eAccess.getEntity().getX() &&
                     entity.getY() == eAccess.getEntity().getY() &&
                     entity.getZ() == eAccess.getEntity().getZ()) {
+                if (eLogger != null) {
+                    eLogger.onEntityImpacted(entity, new Vec3d(0,-0.9923437498509884d, 0));
+                }
                 continue;
             }
 
@@ -158,6 +164,10 @@ public class OptimizedExplosion
                             d11 = ProtectionEnchantment.transformExplosionKnockback((LivingEntity) entity, d10);
                         }
 
+                        if (eLogger != null) {
+                            eLogger.onEntityImpacted(entity, new Vec3d(d5 * d11, d7 * d11, d9 * d11));
+                        }
+
                         entity.setVelocity(entity.getVelocity().add(d5 * d11, d7 * d11, d9 * d11));
 
                         if (entity instanceof PlayerEntity) {

src/main/java/carpet/helpers/TickSpeed.java

@@ -7,10 +7,10 @@ import java.util.function.BiConsumer;
 import carpet.CarpetServer;
 import carpet.network.ServerNetworkHandler;
 import carpet.utils.Messenger;
-import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.command.CommandManager;
 import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.server.network.ServerPlayerEntity;
 import net.minecraft.text.BaseText;
 
 public class TickSpeed
@@ -21,7 +21,7 @@ public class TickSpeed
     public static long time_bias = 0;
     public static long time_warp_start_time = 0;
     public static long time_warp_scheduled_ticks = 0;
-    public static PlayerEntity time_advancerer = null;
+    public static ServerPlayerEntity time_advancerer = null;
     public static String tick_warp_callback = null;
     public static ServerCommandSource tick_warp_sender = null;
     public static int player_active_timeout = 0;
@@ -68,13 +68,14 @@ public class TickSpeed
         player_active_timeout = PLAYER_GRACE+ticks;
     }
 
-    public static BaseText tickrate_advance(PlayerEntity player, int advance, String callback, ServerCommandSource source)
+    public static BaseText tickrate_advance(ServerPlayerEntity player, int advance, String callback, ServerCommandSource source)
     {
         if (0 == advance)
         {
             tick_warp_callback = null;
-            tick_warp_sender = null;
+            if (source != tick_warp_sender) tick_warp_sender = null;
             finish_time_warp();
+            tick_warp_sender = null;
             return Messenger.c("gi Warp interrupted");
         }
         if (time_bias > 0)

src/main/java/carpet/logging/LoggerRegistry.java

@@ -30,6 +30,7 @@ public class LoggerRegistry
     public static boolean __packets;
     public static boolean __weather;
     public static boolean __pathfinding;
+    public static boolean __explosions;
 
     public static void initLoggers()
     {
@@ -52,6 +53,7 @@ public class LoggerRegistry
         registerLogger("packets", HUDLogger.stardardHUDLogger("packets", null, null));
         registerLogger("counter",HUDLogger.stardardHUDLogger("counter","white", Arrays.stream(DyeColor.values()).map(Object::toString).toArray(String[]::new)));
         registerLogger("mobcaps", HUDLogger.stardardHUDLogger("mobcaps", "dynamic",new String[]{"dynamic", "overworld", "nether","end"}));
+        registerLogger("explosions", HUDLogger.stardardLogger("explosions", "brief",new String[]{"brief", "full"}));
 
     }
 

src/main/java/carpet/logging/logHelpers/ExplosionLogHelper.java

@@ -0,0 +1,156 @@
+package carpet.logging.logHelpers;
+
+import carpet.logging.LoggerRegistry;
+import carpet.utils.Messenger;
+import com.google.common.collect.Lists;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityType;
+import net.minecraft.text.BaseText;
+import net.minecraft.util.math.Vec3d;
+import net.minecraft.util.registry.Registry;
+import net.minecraft.world.explosion.Explosion;
+
+import java.util.List;
+
+public class ExplosionLogHelper
+{
+    private final boolean createFire;
+    private final Explosion.DestructionType blockDestructionType;
+    public final double x;
+    public final double y;
+    public final double z;
+    public final Entity entity;
+    private final float power;
+    private boolean affectBlocks = false;
+    private List<EntityChangedStatusWithCount> entityChangedStatusWithCount = Lists.newArrayList();
+
+    private static long lastGametime = 0;
+    private static int explosionCountInCurretGT = 0;
+
+    public ExplosionLogHelper(Entity entity, double x, double y, double z, float power, boolean createFire, Explosion.DestructionType blockDestructionType) {
+        this.entity = entity;
+        this.power = power;
+        this.x = x;
+        this.y = y;
+        this.z = z;
+        this.createFire = createFire;
+        this.blockDestructionType = blockDestructionType;
+    }
+
+    public void setAffectBlocks(boolean b)
+    {
+        affectBlocks = b;
+    }
+
+    public void onExplosionDone(long gametime)
+    {
+        BaseText timeDisplay;
+        if (!(lastGametime == gametime)){
+            explosionCountInCurretGT = 0;
+            lastGametime = gametime;
+            timeDisplay = Messenger.c("wb " + ">>>>>> CURRENT GAME TIME : ", "d " + gametime, "wb  >>>>>>\n");
+        }
+        else
+        {
+            timeDisplay = Messenger.s("");
+        }
+        explosionCountInCurretGT++;
+        LoggerRegistry.getLogger("explosions").log( (option) -> {
+            switch (option)
+            {
+                case "brief":
+                    return new BaseText[]{Messenger.c(
+                            timeDisplay, "gb EXPLOSION", "d  #" + explosionCountInCurretGT,"gb ->  ",
+                            "w P: ",          "d ",Messenger.dblt("l",x ,y ,z),
+                            "w    affectBlocks: ",      "m " + this.affectBlocks
+                    )};
+                case "full":
+                    return new BaseText[]{Messenger.c(
+                            timeDisplay, "gb EXPLOSION", "d  #" + explosionCountInCurretGT,"gb ->  ",
+                            "w P: ",          "d ",Messenger.dblt("l",x ,y ,z),
+                            "w    createFire: ",        "m " + this.createFire,
+                            "w    power: ",             "c " + this.power,
+                            "w    destructionType: ",   "c " + this.blockDestructionType.name(),
+                            "w    affectBlocks: ",      "m " + this.affectBlocks,
+                            "b \n",   ListToText()
+                    )};
+            }
+            return null;
+        });
+    }
+
+    public void onEntityImpacted(Entity entity, Vec3d deltaVelocity)
+    {
+        for (EntityChangedStatusWithCount e : entityChangedStatusWithCount)
+        {
+            if (e.checkIfEquals(entity, deltaVelocity))
+            {
+                e.count++;
+                return;
+            }
+        }
+        entityChangedStatusWithCount.add(new EntityChangedStatusWithCount(entity.getPos(), entity.getType(), deltaVelocity));
+    }
+
+    public BaseText ListToText()
+    {
+        BaseText s = Messenger.s("Entities Impacted:\n");
+        for (EntityChangedStatusWithCount entityChanges : entityChangedStatusWithCount)
+        {
+            s.append(entityChanges.asText());
+            s.append("\n");
+        }
+        return s;
+    }
+
+
+    public static class EntityChangedStatusWithCount
+    {
+        public final Vec3d entityPos;
+        public final EntityType entityType;
+        public final Vec3d deltaSpeed;
+        public int count;
+        public EntityChangedStatusWithCount(Vec3d entityPos, EntityType entityType, Vec3d deltaSpeed)
+        {
+            this.entityPos = entityPos;
+            this.entityType = entityType;
+            this.deltaSpeed = deltaSpeed;
+            this.count = 1;
+        }
+
+        public boolean equals(EntityChangedStatusWithCount e)
+        {
+            return (
+                    e.entityType == this.entityType &&
+                        e.deltaSpeed.equals(this.deltaSpeed) &&
+                        e.entityPos.equals(this.entityPos)
+                    );
+        }
+
+        public boolean checkIfEquals(Entity e, Vec3d deltaSpeed)
+        {
+            return (
+                    e.getType() == this.entityType &&
+                            deltaSpeed.equals(this.deltaSpeed) &&
+                            e.getPos().equals(this.entityPos)
+            );
+        }
+
+        public String toString()
+        {
+            return String.format("{EntityType: %s, EntityPos: %s ,DeltaSpeed: %s}", entityType.getName().asString(), entityPos.toString(), deltaSpeed.toString());
+        }
+
+        public BaseText asText()
+        {
+            return Messenger.c(
+                    "m Entity(count="+ this.count +") of",
+                    "l " + Registry.ENTITY_TYPE.getId(entityType), "g {",
+                    "w    P: ", "y ", Messenger.dblt("t", entityPos.x, entityPos.y, entityPos.z),
+                    "w    dV: ", "gbi " + (deltaSpeed.equals(new Vec3d(0,-0.9923437498509884d, 0)) ? "<TNTs-AT-SAME-SPOT>":""),"y ", Messenger.dblt("d", deltaSpeed.x, deltaSpeed.y, deltaSpeed.z),
+                    "g }"
+            );
+        }
+
+    }
+}

src/main/java/carpet/mixins/ExplosionMixin.java

@@ -2,9 +2,13 @@ package carpet.mixins;
 
 import carpet.helpers.OptimizedExplosion;
 import carpet.CarpetSettings;
+import carpet.logging.LoggerRegistry;
+import carpet.logging.logHelpers.ExplosionLogHelper;
 import net.minecraft.block.BlockState;
 import net.minecraft.block.Blocks;
+import net.minecraft.entity.Entity;
 import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 import net.minecraft.world.explosion.Explosion;
 import org.spongepowered.asm.mixin.Final;
@@ -24,13 +28,17 @@ public abstract class ExplosionMixin
     @Final
     private List<BlockPos> affectedBlocks;
 
+    @Shadow @Final private World world;
+
+    private ExplosionLogHelper eLogger;
+
     @Inject(method = "collectBlocksAndDamageEntities", at = @At("HEAD"),
             cancellable = true)
     private void onExplosionA(CallbackInfo ci)
     {
         if (CarpetSettings.optimizedTNT)
         {
-            OptimizedExplosion.doExplosionA((Explosion) (Object) this);
+            OptimizedExplosion.doExplosionA((Explosion) (Object) this, eLogger);
             ci.cancel();
         }
     }
@@ -39,6 +47,11 @@ public abstract class ExplosionMixin
             cancellable = true)
     private void onExplosionB(boolean spawnParticles, CallbackInfo ci)
     {
+        if (eLogger != null)
+        {
+            eLogger.setAffectBlocks( ! affectedBlocks.isEmpty());
+            eLogger.onExplosionDone(this.world.getTime());
+        }
         if (CarpetSettings.explosionNoBlockDamage)
         {
             affectedBlocks.clear();
@@ -58,4 +71,24 @@ public abstract class ExplosionMixin
         if (CarpetSettings.explosionNoBlockDamage) return Blocks.BEDROCK.getDefaultState();
         return world.getBlockState(pos);
     }
+
+    @Inject(method = "<init>(Lnet/minecraft/world/World;Lnet/minecraft/entity/Entity;DDDFZLnet/minecraft/world/explosion/Explosion$DestructionType;)V",
+            at = @At(value = "RETURN"))
+    private void onExplosionCreated(World world, Entity entity, double x, double y, double z, float power, boolean createFire, Explosion.DestructionType blockDestructionType, CallbackInfo ci)
+    {
+        if (LoggerRegistry.__explosions && ! world.isClient)
+        {
+            eLogger = new ExplosionLogHelper(entity, x, y, z, power, createFire, blockDestructionType);
+        }
+    }
+
+    @Redirect(method = "collectBlocksAndDamageEntities",
+            at = @At(value = "INVOKE", target = "Lnet/minecraft/entity/Entity;setVelocity(Lnet/minecraft/util/math/Vec3d;)V"))
+    private void setVelocityAndUpdateLogging(Entity entity, Vec3d velocity)
+    {
+        if (eLogger != null) {
+            eLogger.onEntityImpacted(entity, velocity.subtract(entity.getVelocity()));
+        }
+        entity.setVelocity(velocity);
+    }
 }

src/main/java/carpet/mixins/PistonBlock_movableTEMixin.java

@@ -5,6 +5,7 @@ import carpet.fakes.PistonBlockEntityInterface;
 import com.google.common.collect.Lists;
 import net.minecraft.block.*;
 import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.block.piston.PistonBehavior;
 import net.minecraft.block.piston.PistonHandler;
 import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.math.Direction;
@@ -62,6 +63,17 @@ public abstract class PistonBlock_movableTEMixin extends FacingBlock
             return !(CarpetSettings.movableBlockEntities && isPushableBlockEntity(block));
         }
     }
+
+    @Redirect(method = "isMovable", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/block/BlockState;getPistonBehavior()Lnet/minecraft/block/piston/PistonBehavior;"
+    ))
+    private static PistonBehavior moveGrindstones(BlockState blockState)
+    {
+        if (CarpetSettings.movableBlockEntities && blockState.getBlock() == Blocks.GRINDSTONE) return PistonBehavior.NORMAL;
+        return blockState.getPistonBehavior();
+    }
+
     @Inject(method = "move", at = @At(value = "INVOKE", shift = At.Shift.BEFORE,
             target = "Ljava/util/List;size()I", ordinal = 4),locals = LocalCapture.CAPTURE_FAILHARD)
     private void onMove(World world_1, BlockPos blockPos_1, Direction direction_1, boolean boolean_1,

src/main/java/carpet/mixins/PlayerEntity_antiCheatDisabled.java

@@ -23,7 +23,7 @@ public abstract class PlayerEntity_antiCheatDisabled
     @Inject(method = "checkFallFlying", at = @At("HEAD"), cancellable = true)
     private void allowDeploys(CallbackInfoReturnable<Boolean> cir)
     {
-        if (CarpetSettings.antiCheatDisabled && CarpetServer.minecraft_server.isDedicated())
+        if (CarpetSettings.antiCheatDisabled && CarpetServer.minecraft_server != null && CarpetServer.minecraft_server.isDedicated())
         {
             ItemStack itemStack_1 = getEquippedStack(EquipmentSlot.CHEST);
             if (itemStack_1.getItem() == Items.ELYTRA && ElytraItem.isUsable(itemStack_1)) {

src/main/java/carpet/script/CarpetEventServer.java

@@ -13,6 +13,7 @@ import carpet.script.value.Value;
 import carpet.utils.Messenger;
 import net.minecraft.block.BlockState;
 import net.minecraft.entity.damage.DamageSource;
+import net.minecraft.server.MinecraftServer;
 import net.minecraft.server.command.ServerCommandSource;
 import net.minecraft.entity.Entity;
 import net.minecraft.server.network.ServerPlayerEntity;
@@ -53,6 +54,7 @@ import java.util.stream.Collectors;
 public class CarpetEventServer
 {
     public final List<ScheduledCall> scheduledCalls = new LinkedList<>();
+    public final MinecraftServer server;
 
     public static class Callback
     {
@@ -658,8 +660,9 @@ public class CarpetEventServer
     }
 
 
-    public CarpetEventServer()
+    public CarpetEventServer(MinecraftServer server)
     {
+        this.server = server;
         for (Event e: Event.values())
             e.handler.callList.clear();
     }

src/main/java/carpet/script/CarpetExpression.java

@@ -2489,6 +2489,18 @@ public class CarpetExpression
 
     }
 
+    public static String recognizeResource(Value value)
+    {
+        String origfile = value.getString();
+        String file = origfile.toLowerCase(Locale.ROOT).replaceAll("[^A-Za-z0-9/]", "");
+        file = Arrays.stream(file.split("/+")).filter(s -> !s.isEmpty()).collect(Collectors.joining("/"));
+        if (file.isEmpty())
+        {
+            throw new InternalExpressionException("Cannot use "+origfile+" as resource name - must have some letters and numbers");
+        }
+        return file;
+    }
+
     private void API_AuxiliaryAspects()
     {
         this.expr.addLazyFunction("sound", -1, (c, t, lv) -> {
@@ -2877,13 +2889,6 @@ public class CarpetExpression
             // implmenetation should dock the task on the main thread.
         });
 
-        this.expr.addLazyFunction("logger", 1, (c, t, lv) ->
-        {
-            Value res = lv.get(0).evalValue(c);
-            CarpetSettings.LOG.error(res.getString());
-            return (_c, _t) -> res; // pass through for variables
-        });
-
         this.expr.addLazyFunction("run", 1, (c, t, lv) -> {
             BlockPos target = ((CarpetContext)c).origin;
             Vec3d posf = new Vec3d((double)target.getX()+0.5D,(double)target.getY(),(double)target.getZ()+0.5D);
@@ -3070,25 +3075,108 @@ public class CarpetExpression
             return (c_, t_) -> Value.TRUE;
         });
 
+        this.expr.addLazyFunction("logger", 1, (c, t, lv) ->
+        {
+            Value res = lv.get(0).evalValue(c);
+            CarpetSettings.LOG.error(res.getString());
+            return (_c, _t) -> res; // pass through for variables
+        });
+
+        this.expr.addLazyFunction("read_file", 2, (c, t, lv) -> {
+            String resource = recognizeResource(lv.get(0).evalValue(c));
+            String origtype = lv.get(1).evalValue(c).getString().toLowerCase(Locale.ROOT);
+            boolean shared = origtype.startsWith("shared_");
+            String type = shared ? origtype.substring(7) : origtype; //len(shared_)
+            if (!type.equals("raw") && !type.equals("text") && !type.equals("nbt"))
+                throw new InternalExpressionException("Unsupported file type: "+origtype);
+            Value retVal;
+            if (type.equals("nbt"))
+            {
+                Tag state = ((CarpetScriptHost)((CarpetContext)c).host).readFileTag(resource, shared);
+                if (state == null) return LazyValue.NULL;
+                retVal = new NBTSerializableValue(state);
+            }
+            else
+            {
+                List<String> content = ((CarpetScriptHost) ((CarpetContext) c).host).readTextResource(resource, shared);
+                if (content == null) return LazyValue.NULL;
+                retVal = ListValue.wrap(content.stream().map(StringValue::new).collect(Collectors.toList()));
+            }
+            return (cc, tt) -> retVal;
+        });
+
+        this.expr.addLazyFunction("delete_file", 2, (c, t, lv) -> {
+            String resource = recognizeResource(lv.get(0).evalValue(c));
+            String origtype = lv.get(1).evalValue(c).getString().toLowerCase(Locale.ROOT);
+            boolean shared = origtype.startsWith("shared_");
+            String type = shared ? origtype.substring(7) : origtype; //len(shared_)
+            if (!type.equals("raw") && !type.equals("text") && !type.equals("nbt"))
+                throw new InternalExpressionException("Unsupported file type: "+origtype);
+            boolean success = ((CarpetScriptHost)((CarpetContext)c).host).removeResourceFile(resource, shared, type);
+            return success?LazyValue.TRUE:LazyValue.FALSE;
+        });
+
+        this.expr.addLazyFunction("write_file", -1, (c, t, lv) -> {
+            if (lv.size() < 3) throw new InternalExpressionException("'write_file' requires three or more arguments");
+            String resource = recognizeResource(lv.get(0).evalValue(c));
+            String origtype = lv.get(1).evalValue(c).getString().toLowerCase(Locale.ROOT);
+            boolean shared = origtype.startsWith("shared_");
+            String type = shared ? origtype.substring(7) : origtype; //len(shared_)
+            if (!type.equals("raw") && !type.equals("text") && !type.equals("nbt"))
+                throw new InternalExpressionException("Unsupported file type: "+origtype);
+            boolean success;
+            if (type.equals("nbt"))
+            {
+                Value val = lv.get(2).evalValue(c);
+                NBTSerializableValue tagValue =  (val instanceof NBTSerializableValue)
+                        ? (NBTSerializableValue) val
+                        : new NBTSerializableValue(val.getString());
+                Tag tag = tagValue.getTag();
+                success = ((CarpetScriptHost)((CarpetContext)c).host).writeTagFile(tag, resource, shared);
+            }
+            else
+            {
+                List<String> data = new ArrayList<>();
+                if (lv.size()==3)
+                {
+                    Value val = lv.get(2).evalValue(c);
+                    if (val instanceof ListValue)
+                    {
+                        List<Value> lval = ((ListValue) val).getItems();
+                        lval.forEach(v -> data.add(v.getString()));
+                    }
+                    else
+                    {
+                        data.add(val.getString());
+                    }
+                }
+                else
+                {
+                    for(int i = 2; i < lv.size(); i++)
+                    {
+                        data.add(lv.get(i).evalValue(c).getString());
+                    }
+                }
+                success = ((CarpetScriptHost) ((CarpetContext) c).host).appendLogFile(resource, shared, type, data);
+            }
+            return success?LazyValue.TRUE:LazyValue.FALSE;
+        });
+
+        //write_file
+
         this.expr.addLazyFunction("load_app_data", -1, (c, t, lv) ->
         {
             String file = null;
             boolean shared = false;
             if (lv.size()>0)
             {
-                String origfile = lv.get(0).evalValue(c).getString();
-                file = origfile.toLowerCase(Locale.ROOT).replaceAll("[^A-Za-z0-9/]", "");
-                file = Arrays.stream(file.split("/+")).filter(s -> !s.isEmpty()).collect(Collectors.joining("/"));
-                if (file.isEmpty())
-                {
-                    throw new InternalExpressionException("Cannot use "+origfile+" as resource name - must have at least some letters and numbers");
-                }
+                file = recognizeResource(lv.get(0).evalValue(c));
                 if (lv.size() > 1)
                 {
                     shared = lv.get(1).evalValue(c).getBoolean();
                 }
             }
-            Tag state = ((CarpetScriptHost)((CarpetContext)c).host).getGlobalState(file, shared);
+            Tag state = ((CarpetScriptHost)((CarpetContext)c).host).readFileTag(file, shared);
             if (state == null)
                 return (cc, tt) -> Value.NULL;
             Value retVal = new NBTSerializableValue(state);
@@ -3104,13 +3192,7 @@ public class CarpetExpression
             boolean shared = false;
             if (lv.size()>1)
             {
-                String origfile = lv.get(1).evalValue(c).getString();
-                file = origfile.toLowerCase(Locale.ROOT).replaceAll("[^A-Za-z0-9/]", "");
-                file = Arrays.stream(file.split("/+")).filter(s -> !s.isEmpty()).collect(Collectors.joining("/"));
-                if (file.isEmpty())
-                {
-                    throw new InternalExpressionException("Cannot use "+origfile+" as resource name - must have some letters and numbers");
-                }
+                file = recognizeResource(lv.get(1).evalValue(c));
                 if (lv.size() > 2)
                 {
                     shared = lv.get(2).evalValue(c).getBoolean();
@@ -3120,7 +3202,7 @@ public class CarpetExpression
                     ? (NBTSerializableValue) val
                     : new NBTSerializableValue(val.getString());
             Tag tag = tagValue.getTag();
-            boolean success = ((CarpetScriptHost)((CarpetContext)c).host).setGlobalState(tag, file, shared);
+            boolean success = ((CarpetScriptHost)((CarpetContext)c).host).writeTagFile(tag, file, shared);
             return success?LazyValue.TRUE:LazyValue.FALSE;
         });
 

src/main/java/carpet/script/CarpetScriptHost.java

@@ -323,7 +323,7 @@ public class CarpetScriptHost extends ScriptHost
         {
             try
             {
-                callUDF(BlockPos.ORIGIN, CarpetServer.minecraft_server.getCommandSource(), closing, Collections.emptyList());
+                callUDF(BlockPos.ORIGIN, scriptServer.server.getCommandSource(), closing, Collections.emptyList());
             }
             catch (InvalidCallbackException ignored)
             {
@@ -334,8 +334,8 @@ public class CarpetScriptHost extends ScriptHost
             FunctionValue userClosing = value.getFunction("__on_close");
             if (userClosing != null)
             {
-                ServerPlayerEntity player = CarpetServer.minecraft_server.getPlayerManager().getPlayer(key);
-                ServerCommandSource source = (player != null)?player.getCommandSource():CarpetServer.minecraft_server.getCommandSource();
+                ServerPlayerEntity player = scriptServer.server.getPlayerManager().getPlayer(key);
+                ServerCommandSource source = (player != null)?player.getCommandSource():scriptServer.server.getCommandSource();
                 try
                 {
                     ((CarpetScriptHost) value).callUDF(BlockPos.ORIGIN, source, userClosing, Collections.emptyList());
@@ -347,7 +347,7 @@ public class CarpetScriptHost extends ScriptHost
         });
 
         String markerName = CarpetExpression.MARKER_STRING+"_"+((getName()==null)?"":getName());
-        for (ServerWorld world : CarpetServer.minecraft_server.getWorlds())
+        for (ServerWorld world : scriptServer.server.getWorlds())
         {
             for (Entity e : world.getEntities(EntityType.ARMOR_STAND, (as) -> as.getScoreboardTags().contains(markerName)))
             {
@@ -369,7 +369,7 @@ public class CarpetScriptHost extends ScriptHost
         return Module.getData(main, null, false);
     }
 
-    public Tag getGlobalState(String file, boolean isShared)
+    public Tag readFileTag(String file, boolean isShared)
     {
         if (getName() == null && !isShared) return null;
         if (file != null)
@@ -379,7 +379,7 @@ public class CarpetScriptHost extends ScriptHost
         return ((CarpetScriptHost)parent).globalState;
     }
 
-    public boolean setGlobalState(Tag tag, String file, boolean isShared)
+    public boolean writeTagFile(Tag tag, String file, boolean isShared)
     {
         if (getName() == null && !isShared) return false; // if belongs to an app, cannot be default host.
 
@@ -398,6 +398,25 @@ public class CarpetScriptHost extends ScriptHost
         return true;
     }
 
+    public boolean removeResourceFile(String resource, boolean isShared, String type)
+    {
+        if (getName() == null && !isShared) return false; //
+        return Module.dropExistingFile(main, resource, type.equals("nbt")?"nbt":"txt", isShared);
+    }
+
+    public boolean appendLogFile(String resource, boolean isShared, String type, List<String> data)
+    {
+        if (getName() == null && !isShared) return false; // if belongs to an app, cannot be default host.
+        return Module.appendToTextFile(main, resource, type, isShared, data);
+    }
+
+    public List<String> readTextResource(String resource, boolean isShared)
+    {
+        if (getName() == null && !isShared) return null; //
+        return Module.listFile(main, resource, "txt", isShared);
+    }
+
+
     public void tick()
     {
         if (this.saveTimeout > 0)

src/main/java/carpet/script/CarpetScriptServer.java

@@ -36,6 +36,7 @@ import static net.minecraft.server.command.CommandManager.literal;
 public class CarpetScriptServer
 {
     //make static for now, but will change that later:
+    public final MinecraftServer server;
     public  CarpetScriptHost globalHost;
     public  Map<String, CarpetScriptHost> modules;
     public long tickStart;
@@ -51,19 +52,20 @@ public class CarpetScriptServer
         add(new BundledModule("math", true));
     }};
 
-    public CarpetScriptServer()
+    public CarpetScriptServer(MinecraftServer server)
     {
         init();
     }
 
     private void init()
     {
+        this.server = server;
         ScriptHost.systemGlobals.clear();
-        events = new CarpetEventServer();
+        events = new CarpetEventServer(server);
         modules = new HashMap<>();
         tickStart = 0L;
         stopAll = false;
-        holyMoly = CarpetServer.minecraft_server.getCommandManager().getDispatcher().getRoot().getChildren().stream().map(CommandNode::getName).collect(Collectors.toSet());
+        holyMoly = server.getCommandManager().getDispatcher().getRoot().getChildren().stream().map(CommandNode::getName).collect(Collectors.toSet());
         globalHost = CarpetScriptHost.create(this, null, false, null);
     }
 
@@ -71,10 +73,10 @@ public class CarpetScriptServer
     {
         if (CarpetSettings.scriptsAutoload)
         {
-            Messenger.m(CarpetServer.minecraft_server.getCommandSource(), "Auto-loading world scarpet apps");
+            Messenger.m(server.getCommandSource(), "Auto-loading world scarpet apps");
             for (String moduleName: listAvailableModules(false))
             {
-                addScriptHost(CarpetServer.minecraft_server.getCommandSource(), moduleName, true, true);
+                addScriptHost(server.getCommandSource(), moduleName, true, true);
             }
         }
 
@@ -83,6 +85,8 @@ public class CarpetScriptServer
     public Module getModule(String name, boolean allowLibraries)
     {
         File folder = CarpetServer.minecraft_server.getSavePath(WorldSavePath.ROOT).resolve("scripts").toFile();
+        File folder = server.getLevelStorage().resolveFile(
+                server.getLevelName(), "scripts");
         File[] listOfFiles = folder.listFiles();
         if (listOfFiles != null)
             for (File script : listOfFiles)
@@ -117,6 +121,8 @@ public class CarpetScriptServer
             }
         }
         File folder = CarpetServer.minecraft_server.getSavePath(WorldSavePath.ROOT).resolve("scripts").toFile();
+        File folder = server.getLevelStorage().resolveFile(
+                server.getLevelName(), "scripts");
         File[] listOfFiles = folder.listFiles();
         if (listOfFiles == null)
             return moduleNames;
@@ -228,7 +234,7 @@ public class CarpetScriptServer
                                     })));
         }
         Messenger.m(source, "gi "+hostName+" app loaded with /"+hostName+" command");
-        CarpetServer.minecraft_server.getCommandManager().getDispatcher().register(command);
+        server.getCommandManager().getDispatcher().register(command);
         CarpetServer.settingsManager.notifyPlayersCommandsChanged();
     }
 

src/main/java/carpet/script/Tokenizer.java

@@ -173,9 +173,9 @@ public class Tokenizer implements Iterator<Tokenizer.Token>
                     }
                     else if (nextChar == 't')
                     {
-                        throw new ExpressionException(context, this.expression, token,
-                                "Tab character is not supported");
-                        //token.append('\t');
+                        //throw new ExpressionException(context, this.expression, token,
+                        //        "Tab character is not supported");
+                        token.append('\t');
                     }
                     else if (nextChar == 'r')
                     {

src/main/java/carpet/script/bundled/FileModule.java

@@ -1,17 +1,24 @@
 package carpet.script.bundled;
 
-import carpet.CarpetServer;
 import net.minecraft.nbt.PositionTracker;
 import net.minecraft.nbt.Tag;
 import net.minecraft.nbt.TagReaders;
 
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
+import java.io.OutputStreamWriter;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
+import java.nio.file.StandardOpenOption;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
 
 public class FileModule extends Module
@@ -96,4 +103,44 @@ public class FileModule extends Module
         if (!file.exists()) file_2.renameTo(file);
         return true;
     }
+
+    public static boolean appendText(File filePath, boolean addNewLines, List<String> data)
+    {
+        try
+        {
+            OutputStream out = Files.newOutputStream(filePath.toPath(), StandardOpenOption.APPEND, StandardOpenOption.CREATE);
+            try (BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(out, StandardCharsets.UTF_8)))
+            {
+                for (String line: data)
+                {
+                    writer.append(line);
+                    if (addNewLines) writer.newLine();
+                }
+            }
+        }
+        catch (IOException e)
+        {
+            return false;
+        }
+        return true;
+    }
+
+
+    public static List<String> listFileContent(File filePath)
+    {
+        try (BufferedReader reader = Files.newBufferedReader(filePath.toPath(), StandardCharsets.UTF_8)) {
+            List<String> result = new ArrayList<>();
+            for (;;) {
+                String line = reader.readLine();
+                if (line == null)
+                    break;
+                result.add(line.replaceAll("[\n\r]+",""));
+            }
+            return result;
+        }
+        catch (IOException e)
+        {
+            return null;
+        }
+    }
 }

src/main/java/carpet/script/bundled/Module.java

@@ -6,15 +6,14 @@ import net.minecraft.util.WorldSavePath;
 
 import java.io.File;
 import java.nio.file.Files;
-
-import static carpet.script.bundled.FileModule.read;
-import static carpet.script.bundled.FileModule.write;
+import java.util.List;
 
 public abstract class Module
 {
     public abstract String getName();
     public abstract String getCode();
     public abstract boolean isLibrary();
+    public final static Object writeIOSync = new Object();
 
     private static String getDescriptor(Module module, String file, boolean isShared)
     {
@@ -34,18 +33,52 @@ public abstract class Module
 
     public static Tag getData(Module module, String file, boolean isShared)
     {
+        File dataFile = resolveResource(module, file, "nbt", isShared);
+        if (dataFile == null) return null;
         if (!isShared && (module == null || module.getName() == null)) return null;
         File dataFile = CarpetServer.minecraft_server.getSavePath(WorldSavePath.ROOT).resolve("scripts/"+getDescriptor(module, file, isShared)+".nbt").toFile();
         if (!Files.exists(dataFile.toPath()) || !(dataFile.isFile())) return null;
-        return read(dataFile);
+        synchronized (writeIOSync) { return FileModule.read(dataFile); }
     }
 
     public static boolean saveData(Module module, String file, Tag globalState, boolean isShared)
     {
+        File dataFile = resolveResource(module, file, "nbt", isShared);
+        if (dataFile == null) return false;
         if (!isShared && (module == null || module.getName() == null)) return false;
         File dataFile =CarpetServer.minecraft_server.getSavePath(WorldSavePath.ROOT).resolve("scripts/"+getDescriptor(module, file, isShared)+".nbt").toFile();
         if (!Files.exists(dataFile.toPath().getParent()) && !dataFile.getParentFile().mkdirs()) return false;
-        return write(globalState, dataFile);
+        synchronized (writeIOSync) { return FileModule.write(globalState, dataFile); }
+    }
+
+    public static boolean appendToTextFile(Module module, String resourceName, String type, boolean isShared, List<String> message)
+    {
+        File dataFile = resolveResource(module, resourceName, "txt", isShared);
+        if (dataFile == null) return false;
+        if (!Files.exists(dataFile.toPath().getParent()) && !dataFile.getParentFile().mkdirs()) return false;
+        synchronized (writeIOSync) { return FileModule.appendText(dataFile, type.equals("text"), message); }
+    }
+
+    public static boolean dropExistingFile(Module module, String resourceName, String ext, boolean isShared)
+    {
+        File dataFile = resolveResource(module, resourceName, ext, isShared);
+        if (dataFile == null) return false;
+        synchronized (writeIOSync) { return dataFile.delete(); }
+    }
+
+    public static List<String> listFile(Module module, String resourceName, String ext, boolean isShared)
+    {
+        File dataFile = resolveResource(module, resourceName, ext, isShared);
+        if (dataFile == null) return null;
+        if (!dataFile.exists()) return null;
+        synchronized (writeIOSync) { return FileModule.listFileContent(dataFile); }
+    }
+
+    private static File resolveResource(Module module, String resourceName, String ext, boolean isShared)
+    {
+        if (!isShared && (module == null || module.getName() == null)) return null;
+        return CarpetServer.minecraft_server.getLevelStorage().resolveFile(
+                CarpetServer.minecraft_server.getLevelName(), "scripts/"+getDescriptor(module, resourceName, isShared)+"."+ext);
     }
 
     @Override

src/main/java/carpet/settings/SettingsManager.java

@@ -361,8 +361,7 @@ public class SettingsManager
     {
         if (dispatcher.getRoot().getChildren().stream().anyMatch(node -> node.getName().equalsIgnoreCase(identifier)))
         {
-            Messenger.print_server_message(CarpetServer.minecraft_server,
-                    Messenger.c("rb Failed to add settings command for " + identifier + ". It is masking previous command."));
+            CarpetSettings.LOG.error("Failed to add settings command for " + identifier + ". It is masking previous command.");
             return;
         }