Separate ScriptHost from CarpetScriptHost
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package carpet.script;
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import carpet.CarpetServer;
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import carpet.script.bundled.ModuleInterface;
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import carpet.script.exception.ExpressionException;
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import carpet.script.exception.InvalidCallbackException;
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import carpet.script.value.FunctionValue;
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import carpet.script.value.NumericValue;
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import carpet.script.value.StringValue;
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import carpet.script.value.Value;
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import carpet.settings.CarpetSettings;
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import com.mojang.brigadier.exceptions.CommandSyntaxException;
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import net.minecraft.entity.Entity;
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import net.minecraft.entity.EntityType;
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import net.minecraft.nbt.Tag;
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import net.minecraft.server.command.ServerCommandSource;
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import net.minecraft.server.network.ServerPlayerEntity;
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import net.minecraft.server.world.ServerWorld;
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import net.minecraft.util.math.BlockPos;
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import java.math.BigInteger;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Locale;
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import static java.lang.Math.max;
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public class CarpetScriptHost extends ScriptHost
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{
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private CarpetScriptServer scriptServer;
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private Tag globalState;
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private int saveTimeout;
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CarpetScriptHost(CarpetScriptServer server, String name, ModuleInterface code, boolean perUser, ScriptHost parent)
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{
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super(name, code, perUser, parent);
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this.saveTimeout = 0;
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this.scriptServer = server;
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if (parent == null && name != null)
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globalState = loadState();
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}
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@Override
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protected ScriptHost duplicate()
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{
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return new CarpetScriptHost(scriptServer, this.getName(), myCode, false, this);
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}
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@Override
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public void addUserDefinedFunction(String funName, FunctionValue function)
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{
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super.addUserDefinedFunction(funName, function);
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// mcarpet
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if (funName.startsWith("__on_"))
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{
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// this is nasty, we have the host and function, yet we add it via names, but hey - works for now
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String event = funName.replaceFirst("__on_","");
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if (CarpetEventServer.Event.byName.containsKey(event))
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scriptServer.events.addEventDirectly(event, this, function);
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}
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}
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public CarpetScriptHost retrieveForExecution(ServerCommandSource source)
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{
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if (!perUser)
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return this;
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try
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{
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ServerPlayerEntity player = source.getPlayer();
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return (CarpetScriptHost) retrieveForExecution(player.getName().getString());
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}
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catch (CommandSyntaxException e)
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{
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return (CarpetScriptHost) retrieveForExecution((String)null);
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}
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}
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public String call(ServerCommandSource source, String call, List<Integer> coords, String arg)
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{
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if (CarpetServer.scriptServer.stopAll)
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return "SCARPET PAUSED";
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FunctionValue function = globalFunctions.get(call);
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if (function == null)
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return "UNDEFINED";
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List<LazyValue> argv = new ArrayList<>();
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if (coords != null)
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for (Integer i: coords)
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argv.add( (c, t) -> new NumericValue(i));
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String sign = "";
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for (Tokenizer.Token tok : Tokenizer.simplepass(arg))
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{
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switch (tok.type)
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{
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case VARIABLE:
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if (globalVariables.containsKey(tok.surface.toLowerCase(Locale.ROOT)))
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{
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argv.add(globalVariables.get(tok.surface.toLowerCase(Locale.ROOT)));
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break;
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}
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case STRINGPARAM:
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argv.add((c, t) -> new StringValue(tok.surface));
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sign = "";
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break;
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case LITERAL:
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try
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{
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String finalSign = sign;
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argv.add((c, t) ->new NumericValue(finalSign+tok.surface));
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sign = "";
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}
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catch (NumberFormatException exception)
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{
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return "Fail: "+sign+tok.surface+" seems like a number but it is not a number. Use quotes to ensure its a string";
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}
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break;
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case HEX_LITERAL:
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try
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{
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String finalSign = sign;
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argv.add((c, t) -> new NumericValue(new BigInteger(finalSign+tok.surface.substring(2), 16).doubleValue()));
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sign = "";
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}
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catch (NumberFormatException exception)
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{
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return "Fail: "+sign+tok.surface+" seems like a number but it is not a number. Use quotes to ensure its a string";
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}
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break;
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case OPERATOR:
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case UNARY_OPERATOR:
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if ((tok.surface.equals("-") || tok.surface.equals("-u")) && sign.isEmpty())
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{
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sign = "-";
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}
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else
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{
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return "Fail: operators, like " + tok.surface + " are not allowed in invoke";
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}
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break;
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case FUNCTION:
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return "Fail: passing functions like "+tok.surface+"() to invoke is not allowed";
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case OPEN_PAREN:
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case COMMA:
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case CLOSE_PAREN:
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case MARKER:
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return "Fail: "+tok.surface+" is not allowed in invoke";
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}
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}
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List<String> args = function.getArguments();
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if (argv.size() != args.size())
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{
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String error = "Fail: stored function "+call+" takes "+args.size()+" arguments, not "+argv.size()+ ":\n";
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for (int i = 0; i < max(argv.size(), args.size()); i++)
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{
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error += (i<args.size()?args.get(i):"??")+" => "+(i<argv.size()?argv.get(i).evalValue(null).getString():"??")+"\n";
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}
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return error;
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}
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try
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{
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// TODO: this is just for now - invoke would be able to invoke other hosts scripts
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Context context = new CarpetContext(this, source, BlockPos.ORIGIN);
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return Expression.evalValue(
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() -> function.lazyEval(context, Context.VOID, function.getExpression(), function.getToken(), argv),
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context,
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Context.VOID
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).getString();
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}
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catch (ExpressionException e)
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{
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return e.getMessage();
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}
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}
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public Value callUDF(BlockPos pos, ServerCommandSource source, FunctionValue fun, List<LazyValue> argv) throws InvalidCallbackException
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{
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if (CarpetServer.scriptServer.stopAll)
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return Value.NULL;
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if (argv.size() != fun.getArguments().size())
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{
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throw new InvalidCallbackException();
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}
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try
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{
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// TODO: this is just for now - invoke would be able to invoke other hosts scripts
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Context context = new CarpetContext(this, source, pos);
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return Expression.evalValue(
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() -> fun.lazyEval(context, Context.VOID, fun.getExpression(), fun.getToken(), argv),
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context,
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Context.VOID);
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}
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catch (ExpressionException e)
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{
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CarpetSettings.LOG.error("Callback failed: "+e.getMessage());
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}
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return Value.NULL;
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}
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@Override
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public void onClose()
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{
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super.onClose();
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if (this.saveTimeout > 0)
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dumpState();
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String markerName = ExpressionInspector.MARKER_STRING+"_"+((getName()==null)?"":getName());
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for (ServerWorld world : CarpetServer.minecraft_server.getWorlds())
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{
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for (Entity e : world.getEntities(EntityType.ARMOR_STAND, (as) -> as.getScoreboardTags().contains(markerName)))
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{
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e.remove();
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}
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}
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}
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private void dumpState()
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{
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myCode.saveData(null, globalState);
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}
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private Tag loadState()
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{
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return myCode.getData(null);
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}
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public Tag getGlobalState(String file)
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{
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if (getName() == null || myCode.isInternal()) return null;
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if (file != null)
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myCode.getData(file);
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if (parent == null)
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return globalState;
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return ((CarpetScriptHost)parent).globalState;
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}
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public void setGlobalState(Tag tag, String file)
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{
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if (getName() == null || myCode.isInternal()) return;
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if (file!= null)
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{
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myCode.saveData(file, tag);
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return;
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}
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CarpetScriptHost responsibleHost = (parent != null)?(CarpetScriptHost) parent:this;
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responsibleHost.globalState = tag;
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if (responsibleHost.saveTimeout == 0)
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{
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responsibleHost.dumpState();
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responsibleHost.saveTimeout = 200;
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}
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}
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public void tick()
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{
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if (this.saveTimeout > 0)
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{
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this.saveTimeout --;
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if (this.saveTimeout == 0)
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{
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dumpState();
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}
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}
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}
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}
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