diff --git a/src/main/kotlin/com/bytedice/bde_particles/Bde_particles.kt b/src/main/kotlin/com/bytedice/bde_particles/Bde_particles.kt
index fe5b069..31bb460 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/Bde_particles.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/Bde_particles.kt
@@ -52,6 +52,10 @@ import kotlin.reflect.full.declaredMemberProperties
 // Copying particle params in-game.
 // Custom curve equation command args (parse from strings).
 // Force field "config" option.
+// add rotation offset to transformWithVel
+
+// TODO: (now)
+// nothing lmao
 
 
 var ALL_PARTICLE_EMITTERS: Array<ParticleEmitter> = emptyArray()
diff --git a/src/main/kotlin/com/bytedice/bde_particles/DisplayEntity.kt b/src/main/kotlin/com/bytedice/bde_particles/DisplayEntity.kt
index 0afd2b5..0bad411 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/DisplayEntity.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/DisplayEntity.kt
@@ -77,7 +77,7 @@ class DisplayEntity(var properties: DisplayEntityProperties?) {
       putString("billboard", properties.billboard)
 
       if (properties.customName != null) {
-        putString("CustomName", properties.customName)
+        putString("CustomName", "{\"text\":\"${properties.customName}\"}")
         putByte("CustomNameVisible", 1)
       }
 
diff --git a/src/main/kotlin/com/bytedice/bde_particles/Math.kt b/src/main/kotlin/com/bytedice/bde_particles/Math.kt
index 751d073..881097e 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/Math.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/Math.kt
@@ -44,6 +44,10 @@ class LerpCurves(val function: (Float) -> Float) {
 
     fun custom(equation: (Float) -> Float) = LerpCurves(equation)
   }
+
+  fun deepCopy() : LerpCurves {
+    return LerpCurves(this.function)
+  }
 }
 
 
@@ -72,12 +76,16 @@ fun raycastFromPlayer(player: ServerPlayerEntity, maxDistance: Double): HitResul
 
 
 fun randomFloatBetween(min: Float, max: Float) : Float {
-  return Random.nextFloat() * (max - min) + min
+  return if (min == max) { max }
+  else if (min > max) { Random.nextFloat() * (min - max) + max }
+  else { Random.nextFloat() * (max - min) + min }
 }
 
 
 fun randomIntBetween(min: Int, max: Int) : Int {
-  return Random.nextInt(max - min) + min
+  return if (min == max) { max }
+  else if (min > max) { Random.nextInt(min - max) + max }
+  else { Random.nextInt(max - min) + min }
 }
 
 
diff --git a/src/main/kotlin/com/bytedice/bde_particles/commands/ConfigArgs.kt b/src/main/kotlin/com/bytedice/bde_particles/commands/ConfigArgs.kt
index ad207df..5794230 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/commands/ConfigArgs.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/commands/ConfigArgs.kt
@@ -377,6 +377,25 @@ fun pairVec3fArg(access: KProperty1<EmitterParams,ParamClasses.PairVec3f>,
         )
       )
     )
+    .then(CommandManager.literal("Constant")
+      .then(CommandManager.argument("X", FloatArgumentType.floatArg())
+        .then(CommandManager.argument("Y", FloatArgumentType.floatArg())
+          .then(CommandManager.argument("Z", FloatArgumentType.floatArg())
+            .executes { context ->
+              val id = StringArgumentType.getString(context, "Emitter ID")
+              val x = FloatArgumentType.getFloat(context, "X")
+              val y = FloatArgumentType.getFloat(context, "Y")
+              val z = FloatArgumentType.getFloat(context, "Z")
+
+              updateParam(id, access, ParamClasses.PairVec3f.Constant(Vector3f(x, y, z)))
+
+              successText(access, "Constant", id, context)
+              Command.SINGLE_SUCCESS
+            }
+          )
+        )
+      )
+    )
     .then(CommandManager.literal("Null")
       .executes { context ->
         val id = StringArgumentType.getString(context, "Emitter ID")
@@ -430,12 +449,12 @@ fun transformWithVelArg(access: KProperty1<EmitterParams, ParamClasses.Transform
         }
       )
     )
-    .then(CommandManager.literal("None")
+    .then(CommandManager.literal("Null")
       .executes { context ->
         val id = StringArgumentType.getString(context, "Emitter ID")
 
-        updateParam(id, access, ParamClasses.TransformWithVel.None)
-        successText(access, "None", id, context)
+        updateParam(id, access, ParamClasses.TransformWithVel.Null)
+        successText(access, "Null", id, context)
         Command.SINGLE_SUCCESS
       }
     )
@@ -458,7 +477,7 @@ fun stringCurveArg(access: KProperty1<EmitterParams, ParamClasses.StringCurve>,
           }
         )
         .executes { context ->
-          stringCurveAddArg(context, access, -1)
+          stringCurveAddArg(context, access, null)
           Command.SINGLE_SUCCESS
         }
       )
@@ -472,7 +491,7 @@ fun stringCurveArg(access: KProperty1<EmitterParams, ParamClasses.StringCurve>,
         }
       )
       .executes { context ->
-        stringCurveRemoveArg(context, access, -1)
+        stringCurveRemoveArg(context, access, null)
         Command.SINGLE_SUCCESS
       }
     )
@@ -492,7 +511,6 @@ fun stringCurveArg(access: KProperty1<EmitterParams, ParamClasses.StringCurve>,
             Command.SINGLE_SUCCESS
           }
           else {
-            println("$modelCurve, $curve, $curveName")
             negativeFeedback("Failed to update param \"modelCurve.curve\"! The curve is invalid!", context)
             Command.SINGLE_SUCCESS
           }
@@ -505,7 +523,7 @@ fun stringCurveArg(access: KProperty1<EmitterParams, ParamClasses.StringCurve>,
 
 fun stringCurveAddArg(context: CommandContext<ServerCommandSource>,
                       access: KProperty1<EmitterParams, ParamClasses.StringCurve>,
-                      index: Int
+                      index: Int?
 ) {
   val id = StringArgumentType.getString(context, "Emitter ID")
   val item = ItemStackArgumentType.getItemStackArgument(context, "Item").item
@@ -513,12 +531,12 @@ fun stringCurveAddArg(context: CommandContext<ServerCommandSource>,
 
   val modelCurve = getEmitterDataById(id)?.modelCurve
 
-  if (index == -1 && modelCurve != null) {
+  if (index == null && modelCurve != null) {
     modelCurve.array = modelCurve.array.toMutableList().apply { add(itemId) }.toTypedArray()
     updateParam(id, access, modelCurve)
   }
   else if (modelCurve != null) {
-    modelCurve.array = modelCurve.array.toMutableList().apply { add(index.coerceIn(0, modelCurve.array.lastIndex), itemId) }.toTypedArray()
+    modelCurve.array = modelCurve.array.toMutableList().apply { add(index!!.coerceIn(0, modelCurve.array.lastIndex), itemId) }.toTypedArray()
     updateParam(id, access, modelCurve)
   }
 
@@ -527,7 +545,7 @@ fun stringCurveAddArg(context: CommandContext<ServerCommandSource>,
 
 fun stringCurveRemoveArg(context: CommandContext<ServerCommandSource>,
                       access: KProperty1<EmitterParams, ParamClasses.StringCurve>,
-                      index: Int
+                      index: Int?
 ) {
   val id = StringArgumentType.getString(context, "Emitter ID")
 
@@ -535,13 +553,13 @@ fun stringCurveRemoveArg(context: CommandContext<ServerCommandSource>,
 
   val item: String
 
-  if (index == -1 && modelCurve != null && modelCurve.array.isNotEmpty()) {
+  if (index == null && modelCurve != null && modelCurve.array.isNotEmpty()) {
     item = modelCurve.array.last()
     modelCurve.array = modelCurve.array.toMutableList().apply { removeLast() }.toTypedArray()
     updateParam(id, access, modelCurve)
   }
   else if (modelCurve != null && modelCurve.array.isNotEmpty()) {
-    item = modelCurve.array[index.coerceIn(0, modelCurve.array.lastIndex)]
+    item = modelCurve.array[index!!.coerceIn(0, modelCurve.array.lastIndex)]
     modelCurve.array = modelCurve.array.toMutableList().apply { removeAt(index.coerceIn(0, modelCurve.array.lastIndex)) }.toTypedArray()
     updateParam(id, access, modelCurve)
   }
@@ -698,8 +716,15 @@ fun forceFieldArg(access: KProperty1<EmitterParams,ParamClasses.ForceFieldArray>
               .then(CommandManager.argument("Radius", FloatArgumentType.floatArg())
                 .then(CommandManager.argument("Min Force", FloatArgumentType.floatArg())
                   .then(CommandManager.argument("Max Force", FloatArgumentType.floatArg())
+                    .then(CommandManager.argument("Index", IntegerArgumentType.integer())
+                      .executes { context ->
+                        val index = IntegerArgumentType.getInteger(context, "Index")
+                        forceFieldAddArg(context, access, "Sphere", index)
+                        Command.SINGLE_SUCCESS
+                      }
+                    )
                     .executes { context ->
-                      forceFieldAddArg(context, access, "Sphere")
+                      forceFieldAddArg(context, access, "Sphere", null)
                       Command.SINGLE_SUCCESS
                     }
                   )
@@ -710,15 +735,20 @@ fun forceFieldArg(access: KProperty1<EmitterParams,ParamClasses.ForceFieldArray>
               .then(CommandManager.argument("Size X", FloatArgumentType.floatArg())
                 .then(CommandManager.argument("Size Y", FloatArgumentType.floatArg())
                   .then(CommandManager.argument("Size Z", FloatArgumentType.floatArg())
-                    .then(CommandManager.argument("Dir X", FloatArgumentType.floatArg())
-                      .then(CommandManager.argument("Dir Y", FloatArgumentType.floatArg())
-                        .then(CommandManager.argument("Dir Z", FloatArgumentType.floatArg())
-                          .then(CommandManager.argument("Force", FloatArgumentType.floatArg())
+                    .then(CommandManager.argument("Force X", FloatArgumentType.floatArg())
+                      .then(CommandManager.argument("Force Y", FloatArgumentType.floatArg())
+                        .then(CommandManager.argument("Force Z", FloatArgumentType.floatArg())
+                          .then(CommandManager.argument("Index", IntegerArgumentType.integer())
                             .executes { context ->
-                              forceFieldAddArg(context, access, "Cube")
+                              val index = IntegerArgumentType.getInteger(context, "Index")
+                              forceFieldAddArg(context, access, "Cube", index)
                               Command.SINGLE_SUCCESS
                             }
                           )
+                          .executes { context ->
+                            forceFieldAddArg(context, access, "Cube", null)
+                            Command.SINGLE_SUCCESS
+                          }
                         )
                       )
                     )
@@ -742,7 +772,7 @@ fun forceFieldArg(access: KProperty1<EmitterParams,ParamClasses.ForceFieldArray>
         }
       )
       .executes { context ->
-        forceFieldRemoveArg(context, access, -1)
+        forceFieldRemoveArg(context, access, null)
         Command.SINGLE_SUCCESS
       }
     )
@@ -750,7 +780,8 @@ fun forceFieldArg(access: KProperty1<EmitterParams,ParamClasses.ForceFieldArray>
 
 fun forceFieldAddArg(context: CommandContext<ServerCommandSource>,
                      access: KProperty1<EmitterParams, ParamClasses.ForceFieldArray>,
-                     shape: String
+                     shape: String,
+                     index: Int?
 ) {
   val id = StringArgumentType.getString(context, "Emitter ID")
   val x = FloatArgumentType.getFloat(context, "X")
@@ -775,21 +806,29 @@ fun forceFieldAddArg(context: CommandContext<ServerCommandSource>,
     val sizeX = FloatArgumentType.getFloat(context, "Size X")
     val sizeY = FloatArgumentType.getFloat(context, "Size Y")
     val sizeZ = FloatArgumentType.getFloat(context, "Size Z")
-    val dirX = FloatArgumentType.getFloat(context, "Dir X")
-    val dirY = FloatArgumentType.getFloat(context, "Dir Y")
-    val dirZ = FloatArgumentType.getFloat(context, "Dir Z")
-    val force = FloatArgumentType.getFloat(context, "Force")
+    val forceX = FloatArgumentType.getFloat(context, "Force X")
+    val forceY = FloatArgumentType.getFloat(context, "Force Y")
+    val forceZ = FloatArgumentType.getFloat(context, "Force Z")
 
     forceField = ForceField(
       Vector3f(x, y, z),
-      ForceFieldShape.Cube(Vector3f(sizeX, sizeY, sizeZ), Vector3f(dirX, dirY, dirZ), force)
+      ForceFieldShape.Cube(Vector3f(sizeX, sizeY, sizeZ), Vector3f(forceX, forceY, forceZ))
     )
   }
 
-  if (forceFields != null &&  forceField != null) {
-    forceFields.array = forceFields.array.toMutableList().apply { add(forceField) }.toTypedArray()
+  if (forceFields != null && forceField != null) {
+    if (index == null) {
+      forceFields.array = forceFields.array.toMutableList().apply { add(forceField) }.toTypedArray()
+    }
+    else {
+      val newIndex = index.coerceIn(0, forceFields.array.size)
+      forceFields.array = forceFields.array.toMutableList().apply { add(newIndex, forceField) }.toTypedArray()
+    }
+
+    val calcIndex = index?.coerceIn(0, forceFields.array.size)
+
     updateParam(id, access, forceFields)
-    successText(access, "++ForceField", id, context)
+    successText(access, "++ForceField at $calcIndex", id, context)
   }
   else {
     negativeFeedback("Failed to update param \"forceFields\"! The Emitter ID is most likely invalid!", context)
@@ -798,18 +837,19 @@ fun forceFieldAddArg(context: CommandContext<ServerCommandSource>,
 
 fun forceFieldRemoveArg(context: CommandContext<ServerCommandSource>,
                          access: KProperty1<EmitterParams, ParamClasses.ForceFieldArray>,
-                         index: Int
+                         index: Int?
 ) {
   val id = StringArgumentType.getString(context, "Emitter ID")
 
   val forceFields = getEmitterDataById(id)?.forceFields
 
-  if (index == -1 && forceFields != null && forceFields.array.isNotEmpty()) {
+  if (index == null && forceFields != null && forceFields.array.isNotEmpty()) {
     forceFields.array = forceFields.array.toMutableList().apply { removeLast() }.toTypedArray()
     updateParam(id, access, forceFields)
   }
   else if (forceFields != null && forceFields.array.isNotEmpty()) {
-    forceFields.array = forceFields.array.toMutableList().apply { removeAt(index.coerceIn(0, forceFields.array.lastIndex)) }.toTypedArray()
+    val newIndex = index?.coerceIn(0, forceFields.array.lastIndex) ?: forceFields.array.lastIndex
+    forceFields.array = forceFields.array.toMutableList().apply { removeAt(newIndex) }.toTypedArray()
     updateParam(id, access, forceFields)
   }
   else {
@@ -817,7 +857,7 @@ fun forceFieldRemoveArg(context: CommandContext<ServerCommandSource>,
     return
   }
 
-  val calcIndex = if (index == -1) { forceFields.array.size } else { index.coerceIn(0, forceFields.array.size) }
+  val calcIndex = index?.coerceIn(0, forceFields.array.size) ?: forceFields.array.size
 
   successText(access, "--ForceField at $calcIndex", id, context)
 }
@@ -828,18 +868,18 @@ fun lerpValIntArg(access: KProperty1<EmitterParams, ParamClasses.LerpValInt>,
 {
   return configArg
     .then(CommandManager.literal("LerpInt")
-      .then(CommandManager.argument("Min", IntegerArgumentType.integer())
-        .then(CommandManager.argument("Max", IntegerArgumentType.integer())
+      .then(CommandManager.argument("From", IntegerArgumentType.integer())
+        .then(CommandManager.argument("To", IntegerArgumentType.integer())
           .then(curveListArg("Curve")
             .executes { context ->
               val id = StringArgumentType.getString(context, "Emitter ID")
-              val min = IntegerArgumentType.getInteger(context, "Min")
-              val max = IntegerArgumentType.getInteger(context, "Max")
+              val from = IntegerArgumentType.getInteger(context, "From")
+              val to = IntegerArgumentType.getInteger(context, "To")
               val curveName = StringArgumentType.getString(context, "Curve")
 
               val curve = stringToCurve(curveName)
 
-              updateParam(id, access, ParamClasses.LerpValInt.LerpInt(min, max, curve!!))
+              updateParam(id, access, ParamClasses.LerpValInt.LerpInt(from, to, curve!!))
 
               successText(access, "LerpInt", id, context)
               Command.SINGLE_SUCCESS
diff --git a/src/main/kotlin/com/bytedice/bde_particles/commands/GiveEmitterTool.kt b/src/main/kotlin/com/bytedice/bde_particles/commands/GiveEmitterTool.kt
index 1305db2..dda4da1 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/commands/GiveEmitterTool.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/commands/GiveEmitterTool.kt
@@ -5,8 +5,12 @@ import com.bytedice.bde_particles.particles.idRegister
 import com.mojang.brigadier.Command
 import com.mojang.brigadier.CommandDispatcher
 import com.mojang.brigadier.arguments.StringArgumentType
+import com.mojang.brigadier.context.CommandContext
 import net.minecraft.command.CommandRegistryAccess
 import net.minecraft.command.argument.ItemStackArgumentType
+import net.minecraft.item.Item
+import net.minecraft.item.ItemStack
+import net.minecraft.item.Items
 import net.minecraft.server.command.CommandManager
 import net.minecraft.server.command.ServerCommandSource
 import net.minecraft.text.Style
@@ -33,26 +37,42 @@ object GiveEmitterTool {
         CompletableFuture.completedFuture(builder.build())
       }
 
-    dispatcher.register(
-      command
-        .then(itemNameArg
-          .then(itemTypeArg
-            .then(emitterIdSuggestion
-              .executes { context ->
-                val name = StringArgumentType.getString(context, "Item Name")
-                val item = ItemStackArgumentType.getItemStackArgument(context, "Item Type")
-                val emitterId = StringArgumentType.getString(context, "Emitter ID")
+    dispatcher.register(command
+      .then(emitterIdSuggestion
+        .then(itemTypeArg
+          .then(itemNameArg
+            .executes { context ->
+              val name = StringArgumentType.getString(context, "Item Name")
+              val item = ItemStackArgumentType.getItemStackArgument(context, "Item Type")
+              val emitterId = StringArgumentType.getString(context, "Emitter ID")
 
-                val feedback = Text.literal("BPS - You like fancy particles. Don't you?\nBPS - gave particle emitter, bound to ID: \"${emitterId}\".")
-                  .setStyle(Style.EMPTY.withColor(TextColor.fromRgb(Color(0, 200, 0).rgb)))
-
-                context.source.player?.inventory?.insertStack(ParticleEmitterTool.makeData(item.item, name, emitterId))
-                context.source.sendFeedback({ feedback }, false)
-                Command.SINGLE_SUCCESS
-              }
-            )
+              exec(context, emitterId, item.item, name)
+              Command.SINGLE_SUCCESS
+            }
           )
+          .executes { context ->
+            val item = ItemStackArgumentType.getItemStackArgument(context, "Item Type")
+            val emitterId = StringArgumentType.getString(context, "Emitter ID")
+
+            exec(context, emitterId, item.item, emitterId)
+            Command.SINGLE_SUCCESS
+          }
         )
+        .executes { context ->
+          val emitterId = StringArgumentType.getString(context, "Emitter ID")
+
+          exec(context, emitterId, Items.AMETHYST_SHARD, emitterId)
+          Command.SINGLE_SUCCESS
+        }
+      )
     )
   }
+
+  private fun exec(context: CommandContext<ServerCommandSource>, emitterId: String, itemType: Item, itemName: String) {
+    val feedback = Text.literal("BPS - You like fancy particles. Don't you?\nBPS - gave particle emitter, bound to ID: \"${emitterId}\".")
+      .setStyle(Style.EMPTY.withColor(TextColor.fromRgb(Color(0, 200, 0).rgb)))
+
+    context.source.player?.inventory?.insertStack(ParticleEmitterTool.makeData(itemType, itemName, emitterId))
+    context.source.sendFeedback({ feedback }, false)
+  }
 }
diff --git a/src/main/kotlin/com/bytedice/bde_particles/commands/ManageEmitters.kt b/src/main/kotlin/com/bytedice/bde_particles/commands/ManageEmitters.kt
index 3b52455..e33e469 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/commands/ManageEmitters.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/commands/ManageEmitters.kt
@@ -122,19 +122,18 @@ object ManageEmitters {
   }
 
   private fun createExec(context: CommandContext<ServerCommandSource>, newEmitterId: String, presetEmitterId: String) {
-    val params = getEmitterDataById(presetEmitterId)?.copy()
+    val params = getEmitterDataById(presetEmitterId)
     val usedDefault = params == null
 
-    println(params?.modelCurve?.array?.size)
-
     val result = addToRegister(
       newEmitterId,
-      params ?: EmitterParams.DEFAULT,
+      (params ?: EmitterParams.DEFAULT).deepCopy(),
     )
 
     if (usedDefault && result.second) {
       positiveFeedback(
-        "Successfully added new Emitter with ID \"${result.first}\" to register.\n(DEFAULT params were used as a preset because the specified Preset Emitter ID wasn't valid.)",
+        "Successfully added new Emitter with ID \"${result.first}\" to register.\n" +
+                "(DEFAULT preset was used because the specified Preset Emitter ID wasn't valid.)",
         context
       )
     }
@@ -146,7 +145,8 @@ object ManageEmitters {
     }
     else {
       negativeFeedback(
-        "Failed to add new Emitter with ID \"${result.first}\" to register.\nThe provided Emitter ID is either reserved for system use or already in use.",
+        "Failed to add new Emitter with ID \"${result.first}\" to register.\n" +
+                "The provided Emitter ID is either reserved for system use or already in use.",
         context
       )
     }
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterDebug.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterDebug.kt
index 88d03a3..94e3359 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterDebug.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterDebug.kt
@@ -74,8 +74,8 @@ class EOrigin(rot: Vector2f, eOrigin: Vec3d) {
 
 class ShapeDebug(eOrigin: Vec3d, spawnPosOffset: Vector3f, shape: SpawningShape) {
   val shapeScale: Vector3f? = when (shape) {
-    is SpawningShape.Circle -> Vector3f(shape.radius * 1.75f * 2, shape.radius * 1.75f * 2, 0.0001f)
-    is SpawningShape.Sphere -> Vector3f(shape.radius * 1.75f * 2, shape.radius * 1.75f * 2, 0.0001f)
+    is SpawningShape.Circle -> Vector3f(shape.radius * 2 * 2, shape.radius * 2 * 2, 0.0001f)
+    is SpawningShape.Sphere -> Vector3f(shape.radius * 2 * 2, shape.radius * 2 * 2, 0.0001f)
     is SpawningShape.Rect   -> Vector3f(shape.size.x, 0.0001f, shape.size.y)
     is SpawningShape.Cube   -> Vector3f(shape.size.x, shape.size.y, shape.size.z)
     else -> null
@@ -135,7 +135,7 @@ class ForceFieldDebug {
   var FFDEArray: Array<DisplayEntity> = emptyArray()
 
   fun makeArray(eOrigin: Vec3d, forceFieldArray: ParamClasses.ForceFieldArray, spawnPosOffset: Vector3f) {
-    forceFieldArray.array.forEach {
+    forceFieldArray.array.forEachIndexed { index, it ->
       val shapeScale = when (it.shape) {
         is ForceFieldShape.Sphere -> Vector3f(1.333f * it.shape.radius * 2, 1.333f * it.shape.radius * 2, 0.0001f)
         is ForceFieldShape.Cube   -> it.shape.size
@@ -143,14 +143,14 @@ class ForceFieldDebug {
 
       val newOffset = Vector3f(spawnPosOffset).add(it.pos)
 
-      val displayEntity = DisplayEntity(
-        DisplayEntityProperties(
-          pos = eOrigin.add(newOffset.x.toDouble(), newOffset.y.toDouble(), newOffset.z.toDouble()),
-          model = if (it.shape is ForceFieldShape.Sphere) { "minecraft:snowball" } else { "minecraft:white_stained_glass" },
-          tags = arrayOf("DEBUG", "E_DEBUG", "eOrigin_DEBUG", "BPS_UUID", SESSION_UUID.toString()),
-          brightnessOverride = 15,
-          billboard = if (it.shape is ForceFieldShape.Sphere) { Billboard.CENTER } else { Billboard.FIXED },
-          scale = shapeScale
+      val displayEntity = DisplayEntity(DisplayEntityProperties(
+        pos = eOrigin.add(newOffset.x.toDouble(), newOffset.y.toDouble(), newOffset.z.toDouble()),
+        model = if (it.shape is ForceFieldShape.Sphere) { "minecraft:snowball" } else { "minecraft:white_stained_glass" },
+        tags = arrayOf("DEBUG", "E_DEBUG", "eOrigin_DEBUG", "BPS_UUID", SESSION_UUID.toString()),
+        customName = "forceField index: $index",
+        brightnessOverride = 15,
+        billboard = if (it.shape is ForceFieldShape.Sphere) { Billboard.CENTER } else { Billboard.FIXED },
+        scale = shapeScale
       ))
 
       FFDEArray += displayEntity
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterParams.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterParams.kt
index 1cd7e21..14dee92 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterParams.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/EmitterParams.kt
@@ -34,6 +34,16 @@ data class EmitterParams (
   var brightnessCurve: ParamClasses.LerpValInt,
 )
 {
+  fun deepCopy() : EmitterParams {
+    val cModelCurveArray = this.modelCurve.deepCopy()
+    val cForceFieldArray = this.forceFields.deepCopy()
+    val cParams = this.copy()
+
+    cParams.modelCurve = cModelCurveArray
+    cParams.forceFields = cForceFieldArray
+    return cParams
+  }
+
   companion object Presets {
     val DEFAULT = EmitterParams(
       maxCount = 200,
@@ -49,7 +59,7 @@ data class EmitterParams (
       initVel = ParamClasses.PairVec3f.Null,
       initCenterVel = ParamClasses.PairFloat(0.4f, 0.5f),
       initScale = ParamClasses.PairVec3f.Uniform(0.5f, 1.5f),
-      transformWithVel = ParamClasses.TransformWithVel.None,
+      transformWithVel = ParamClasses.TransformWithVel.Null,
       forceFields = ParamClasses.ForceFieldArray(emptyArray()),
       constVel = Vector3f(0.0f, 0.0f, 0.0f),
       drag = 0.075f,
@@ -68,7 +78,7 @@ data class EmitterParams (
         ),
         LerpCurves.Sqrt
       ),
-      brightnessCurve = ParamClasses.LerpValInt.LerpInt(15, 0, LerpCurves.Sqrt)
+      brightnessCurve = ParamClasses.LerpValInt.LerpInt(15, 5, LerpCurves.Sqrt)
     )
     val DEBUG = EmitterParams(
       maxCount = 50,
@@ -103,7 +113,7 @@ data class EmitterParams (
         ),
         LerpCurves.Linear
       ),
-      brightnessCurve = ParamClasses.LerpValInt.Null
+      brightnessCurve = ParamClasses.LerpValInt.LerpInt(15, 5, LerpCurves.Sqrt)
     )
     val STRESS_TEST = EmitterParams(
       maxCount = 10000,
@@ -119,7 +129,7 @@ data class EmitterParams (
       initVel = ParamClasses.PairVec3f.NonUniform(0.0f, 4.0f, 0.0f, 0.0f, 8.0f, 0.0f),
       initCenterVel = ParamClasses.PairFloat(-1.5f, -1.5f),
       initScale = ParamClasses.PairVec3f.Uniform(10.0f, 15.0f),
-      transformWithVel = ParamClasses.TransformWithVel.None,
+      transformWithVel = ParamClasses.TransformWithVel.Null,
       forceFields = ParamClasses.ForceFieldArray(
         arrayOf(ForceField(
           Vector3f(0.0f, 75.0f, 0.0f),
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/ForceFields.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/ForceFields.kt
index ba4012a..7811967 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/ForceFields.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/ForceFields.kt
@@ -5,4 +5,11 @@ import org.joml.Vector3f
 data class ForceField (
   val pos:   Vector3f,
   val shape: ForceFieldShape
-)
\ No newline at end of file
+) {
+  fun deepCopy(): ForceField {
+    return ForceField(
+      Vector3f(pos),
+      shape.deepCopy()
+    )
+  }
+}
\ No newline at end of file
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/ParamClasses.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/ParamClasses.kt
index 2e1e243..78ab3e5 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/ParamClasses.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/ParamClasses.kt
@@ -36,29 +36,22 @@ class ParamClasses {
         )
       }
     }
+    data class Constant(val value: Vector3f) : PairVec3f()
     data object Null : PairVec3f()
   }
 
   class PairInt (
-    private val min: Int,
-    private val max: Int,
+    val min: Int,
+    val max: Int,
   ) {
-    fun randomize() : Int {
-      return if (min == max) { max }
-      else if (min > max) { max }
-      else { randomIntBetween(min, max) }
-    }
+    fun randomize() : Int { return randomIntBetween(min, max) }
   }
 
   class PairFloat(
-    private val min: Float,
-    private val max: Float,
+    val min: Float,
+    val max: Float,
   ) {
-    fun randomize() : Float {
-      return if (min == max) { max }
-      else if (min > max) { max }
-      else { randomFloatBetween(min, max) }
-    }
+    fun randomize() : Float { return randomFloatBetween(min, max) }
   }
 
   sealed class LerpValVec3f {
@@ -191,7 +184,7 @@ class ParamClasses {
         return Vector3f(contractFactor, contractFactor, stretchFactor)
       }
     }
-    data object None : TransformWithVel()
+    data object Null : TransformWithVel()
   }
 
   class StringCurve (
@@ -199,9 +192,17 @@ class ParamClasses {
     var curve: LerpCurves
   ) {
     fun lerp(t: Float) : String { return lerpArray(array as Array<Any>, t, curve) as String }
+
+    fun deepCopy(): StringCurve {
+      return StringCurve(array.copyOf(), curve.deepCopy())
+    }
   }
 
   data class ForceFieldArray (
     var array: Array<ForceField>
-  )
+  ) {
+    fun deepCopy(): ForceFieldArray {
+      return ForceFieldArray(array.map { it.deepCopy() }.toTypedArray())
+    }
+  }
 }
\ No newline at end of file
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/Particle.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/Particle.kt
index 58d0bb8..b93335c 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/Particle.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/Particle.kt
@@ -25,31 +25,36 @@ class Particle(
   private val originOffset = when (val offset = emitterParams.offset) {
     is ParamClasses.PairVec3f.Uniform -> offset.randomize()
     is ParamClasses.PairVec3f.NonUniform -> offset.randomize()
-    ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
+    is ParamClasses.PairVec3f.Constant -> offset.value
+    is ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
   }
 
   private var rot = when (val initRot = emitterParams.initRot) {
     is ParamClasses.PairVec3f.Uniform -> initRot.randomize()
     is ParamClasses.PairVec3f.NonUniform -> initRot.randomize()
-    ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
+    is ParamClasses.PairVec3f.Constant -> initRot.value
+    is ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
   }
 
   private var rotVel = when (val initRotVel = emitterParams.rotVel) {
     is ParamClasses.PairVec3f.Uniform -> initRotVel.randomize()
     is ParamClasses.PairVec3f.NonUniform -> initRotVel.randomize()
-    ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
+    is ParamClasses.PairVec3f.Constant -> initRotVel.value
+    is ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
   }
 
   private var vel = when (val initVel = emitterParams.initVel) {
     is ParamClasses.PairVec3f.Uniform -> initVel.randomize()
     is ParamClasses.PairVec3f.NonUniform -> initVel.randomize()
-    ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
+    is ParamClasses.PairVec3f.Constant -> initVel.value
+    is ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
   }
 
   private var scale = when (val initScale = emitterParams.initScale) {
     is ParamClasses.PairVec3f.Uniform -> initScale.randomize()
     is ParamClasses.PairVec3f.NonUniform -> initScale.randomize()
-    ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
+    is ParamClasses.PairVec3f.Constant -> initScale.value
+    is ParamClasses.PairVec3f.Null -> Vector3f(0.0f, 0.0f, 0.0f)
   }
 
   private var lifeTime = emitterParams.lifeTime.randomize()
@@ -138,29 +143,32 @@ class Particle(
     val newOriginOffset  = Vector3f(originOffset.mul(emitterParams.offsetCurve.lerpToVector3f(timeAliveClamped)))
     val newBrightness    = emitterParams.brightnessCurve.lerpToInt(timeAliveClamped)
 
-    val newScale: Vector3f
+    val TWVScale: Vector3f
+    //val TWVRot: Vector3f
     val newRot: Vector3f
 
     when (emitterParams.transformWithVel) {
       is ParamClasses.TransformWithVel.RotOnly -> {
-        newScale = calcScale(timeAliveClamped)
+        TWVScale = Vector3f(1.0f, 1.0f, 1.0f)
         newRot = (emitterParams.transformWithVel as ParamClasses.TransformWithVel.RotOnly).velToRot(vel)
       }
       is ParamClasses.TransformWithVel.ScaleAndRot -> {
-        newScale = Vector3f(scale).mul((emitterParams.transformWithVel as ParamClasses.TransformWithVel.ScaleAndRot).velToScale(vel))
+        TWVScale = (emitterParams.transformWithVel as ParamClasses.TransformWithVel.ScaleAndRot).velToScale(vel)
         newRot = (emitterParams.transformWithVel as ParamClasses.TransformWithVel.ScaleAndRot).velToRot(vel)
       }
       else -> {
-        newScale = calcScale(timeAliveClamped)
+        TWVScale = Vector3f(1.0f, 1.0f, 1.0f)
         newRot = calcRot(timeAliveClamped)
-        rot = newRot
       }
     }
 
+    val newScale = TWVScale.mul(calcScale(timeAliveClamped))
+    //val newRot = TWVRot.add(calcRot(timeAliveClamped))
+    rot = newRot
+
     vel = newVel
     pos = newPos
 
-
     for (forceField in emitterParams.forceFields.array) {
       if (forceField.shape is ForceFieldShape.Sphere) { vel.add(sphereSdfVel(forceField)) }
       else if (forceField.shape is ForceFieldShape.Cube) { vel.add(cubeSdfVel(forceField)) }
@@ -206,8 +214,8 @@ class Particle(
     val shape = forceField.shape
 
     val sdfVal = sdfCube(forceField.pos, shape.size, pos)
-    val velDir = if (sdfVal < 0) { shape.dir.mul(shape.force) }
-    else { Vector3f(0.0f, 0.0f, 0.0f) }
+    val velDir = if (sdfVal < 0) { shape.force }
+                 else { Vector3f(0.0f, 0.0f, 0.0f) }
 
     return velDir
   }
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleEmitter.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleEmitter.kt
index eed4a8b..cf5adf3 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleEmitter.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleEmitter.kt
@@ -11,10 +11,10 @@ import net.minecraft.util.math.Vec3d
 import org.joml.Vector2f
 
 class ParticleEmitter(
-  private var pos: Vec3d,
-  private var rot: Vector2f,
-  private val world: ServerWorld,
-  private val params: EmitterParams,
+  var pos: Vec3d,
+  var rot: Vector2f,
+  val world: ServerWorld,
+  val params: EmitterParams,
   private val debug: Boolean = false
 ) {
   private var allParticles: Array<Particle> = emptyArray()
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleIdRegister.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleIdRegister.kt
index e568efb..4c09f5b 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleIdRegister.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/ParticleIdRegister.kt
@@ -33,7 +33,7 @@ fun addToRegister(id: String, params: EmitterParams) : Pair<String, Boolean> {
 
   params.modelCurve.array = newModels.toTypedArray()
 
-  idRegister[id] = params
+  idRegister[newId] = params
   println("BPS - Registered Emitter ID \"$newId\".")
   return Pair(newId, true)
 }
diff --git a/src/main/kotlin/com/bytedice/bde_particles/particles/Shapes.kt b/src/main/kotlin/com/bytedice/bde_particles/particles/Shapes.kt
index 6ee669b..5fb760c 100644
--- a/src/main/kotlin/com/bytedice/bde_particles/particles/Shapes.kt
+++ b/src/main/kotlin/com/bytedice/bde_particles/particles/Shapes.kt
@@ -7,7 +7,7 @@ import org.joml.Vector3f
 import kotlin.math.*
 import kotlin.random.Random
 
-sealed class SpawningShape() {
+sealed class SpawningShape {
   class Circle(val radius: Float, val spawnOnEdge: Boolean) : SpawningShape() {
     fun randomWithin(): Vector3f {
       val randRadius = radius * sqrt(randomFloatBetween(0.0f, 1.0f))
@@ -121,9 +121,16 @@ sealed class ForceFieldShape {
     val radius: Float,
     val force: Pair<Float, Float>,
   ) : ForceFieldShape()
+
   data class Cube(
     val size: Vector3f,
-    val dir: Vector3f,
-    val force: Float
+    val force: Vector3f
   ) : ForceFieldShape()
+
+  fun deepCopy() : ForceFieldShape {
+    return when (this) {
+      is Sphere -> Sphere(this.radius, this.force)
+      is Cube   -> Cube(Vector3f(this.size), Vector3f(this.force))
+    }
+  }
 }
\ No newline at end of file