feat: rework commands and fix bugs

packs/BP/scripts/commands/PrevLayerCommand.js

@@ -1,7 +1,6 @@
-import { CustomCommandParamType, CustomCommandStatus, system } from '@minecraft/server';
+import { CommandPermissionLevel, CustomCommandParamType, CustomCommandStatus, system } from '@minecraft/server';
 import { Command } from '../classes/Commands/Command';
-import { findInstance } from '../classes/Commands/lib/findInstance';
-import { commandError } from '../classes/Commands/lib/commandError';
+import { structureCollection } from '../classes/Structure/StructureCollection';
 
 export class PrevLayerCommand extends Command {
     constructor() {
@@ -11,25 +10,16 @@ export class PrevLayerCommand extends Command {
             mandatoryParameters: [
                 { name: 'instanceName', type: CustomCommandParamType.String }
             ],
+            permissionLevel: CommandPermissionLevel.Any,
             callback: (source, instanceName) => this.run(source, instanceName)
         });
     }
 
     run(source, instanceName) {
-        try {
-            const instance = findInstance(source, instanceName);
-            if (!instance) return { status: CustomCommandStatus.Failure };
-            system.run(() => {
-                instance.decreaseLayer();
-                source.sendMessage({
-                    rawtext: [{ translate: 'construct.commands.prevlayer.success',
-                                with: [instanceName, String(instance.getLayer())] }]
-                });
-            });
-            return { status: CustomCommandStatus.Success };
-        } catch (err) {
-            return commandError(source, err);
-        }
+        const instance = structureCollection.get(instanceName);
+        instance.decreaseLayer();
+        source.sendMessage({ translate: 'construct.commands.prevlayer.success', with: [instanceName, String(instance.getLayer())] });
+        return { status: CustomCommandStatus.Success };
     }
 }