cameramode, and draw commands

src/main/java/carpet/commands/CameraModeCommand.java

@@ -0,0 +1,66 @@
+package carpet.commands;
+
+import carpet.CarpetSettings;
+import com.mojang.brigadier.CommandDispatcher;
+import com.mojang.brigadier.builder.LiteralArgumentBuilder;
+import com.mojang.brigadier.exceptions.CommandSyntaxException;
+import net.minecraft.server.command.ServerCommandSource;
+import net.minecraft.command.arguments.EntityArgumentType;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.entity.effect.StatusEffects;
+import net.minecraft.entity.effect.StatusEffectInstance;
+import net.minecraft.world.GameMode;
+
+import static net.minecraft.server.command.CommandManager.argument;
+import static net.minecraft.server.command.CommandManager.literal;
+
+public class CameraModeCommand
+{
+    public static void register(CommandDispatcher<ServerCommandSource> dispatcher)
+    {
+        LiteralArgumentBuilder<ServerCommandSource> camera = literal("c").
+                requires((player) -> CarpetSettings.getBool("commandCameramode")).
+                executes((c) -> cameraMode(c.getSource(), c.getSource().getPlayer())).
+                then(argument("player", EntityArgumentType.player()).
+                        executes( (c) -> cameraMode(c.getSource(), EntityArgumentType.getPlayer(c, "player"))));
+
+        LiteralArgumentBuilder<ServerCommandSource> survival = literal("s").
+                requires((player) -> CarpetSettings.getBool("commandCameramode")).
+                executes((c) -> survivalMode(
+                        c.getSource(),
+                        c.getSource().getPlayer())).
+                then(argument("player", EntityArgumentType.player()).
+                        executes( (c) -> survivalMode(c.getSource(), EntityArgumentType.getPlayer(c, "player"))));
+
+        dispatcher.register(camera);
+        dispatcher.register(survival);
+    }
+    private static boolean iCanHasPermissions(ServerCommandSource source, PlayerEntity player)
+    {
+        try
+        {
+            return source.hasPermissionLevel(2) || source.getPlayer() == player;
+        }
+        catch (CommandSyntaxException e)
+        {
+            return true; // shoudn't happen because server has all permissions anyways
+        }
+    }
+    private static int cameraMode(ServerCommandSource source, PlayerEntity player)
+    {
+        if (!(iCanHasPermissions(source, player))) return 0;
+        player.setGameMode(GameMode.SPECTATOR);
+        player.addPotionEffect(new StatusEffectInstance(StatusEffects.NIGHT_VISION, 999999, 0, false, false));
+        player.addPotionEffect(new StatusEffectInstance(StatusEffects.CONDUIT_POWER, 999999, 0, false, false));
+        return 1;
+    }
+    private static int survivalMode(ServerCommandSource source, PlayerEntity player)
+    {
+        if (!(iCanHasPermissions(source, player))) return 0;
+        player.setGameMode(GameMode.SURVIVAL);
+        player.removePotionEffect(StatusEffects.NIGHT_VISION);
+        player.removePotionEffect(StatusEffects.CONDUIT_POWER);
+        return 1;
+    }
+
+}