Fix AbstractMethodError when using NULL command source (#497)

arclight-common/src/main/java/io/izzel/arclight/common/mixin/core/commands/CommandSource1Mixin.java

@@ -0,0 +1,49 @@
+package io.izzel.arclight.common.mixin.core.commands;
+
+import io.izzel.arclight.common.bridge.core.command.ICommandSourceBridge;
+import net.minecraft.commands.CommandSourceStack;
+import org.bukkit.command.CommandSender;
+import org.bukkit.craftbukkit.v.command.ServerCommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.spongepowered.asm.mixin.Mixin;
+
+@Mixin(targets = "net/minecraft/commands/CommandSource$1")
+public class CommandSource1Mixin implements ICommandSourceBridge {
+
+
+    public CommandSender getBukkitSender(CommandSourceStack wrapper) {
+        return new ServerCommandSender() {
+            private final boolean isOp = wrapper.hasPermission(wrapper.getServer().getOperatorUserPermissionLevel());
+
+            @Override
+            public boolean isOp() {
+                return isOp;
+            }
+
+            @Override
+            public void setOp(boolean value) {
+            }
+
+            @Override
+            public void sendMessage(@NotNull String message) {
+
+            }
+
+            @Override
+            public void sendMessage(@NotNull String[] messages) {
+
+            }
+
+            @NotNull
+            @Override
+            public String getName() {
+                return "NULL";
+            }
+        };
+    }
+
+    @Override
+    public CommandSender bridge$getBukkitSender(CommandSourceStack wrapper) {
+        return getBukkitSender(wrapper);
+    }
+}

arclight-common/src/main/resources/mixins.arclight.core.json

@@ -19,6 +19,7 @@
     "advancements.AdvancementMixin",
     "commands.CommandsMixin",
     "commands.CommandSourceMixin",
+    "commands.CommandSource1Mixin",
     "commands.CommandSourceStackMixin",
     "commands.arguments.EntityArgumentMixin",
     "commands.arguments.blocks.BlockStateParserMixin",