Initial command implementation

Author: mbax

src/main/java/org/kitteh/vanish/Vanish.java

@@ -23,12 +23,26 @@
  */
 package org.kitteh.vanish;
 
+import com.google.inject.Inject;
+import org.spongepowered.api.Game;
+import org.spongepowered.api.command.spec.CommandSpec;
+import org.spongepowered.api.event.Listener;
+import org.spongepowered.api.event.game.state.GameInitializationEvent;
 import org.spongepowered.api.plugin.Plugin;
 
 /**
  * Spiritual successor to VanishNoPacket, for Sponge.
  */
 @Plugin(id = "Vanish", name = "Vanish", version = "4.0.0-SNAPSHOT")
 public class Vanish {
-    // TODO: Write plugin.
+    public static final String PERMISSION_VANISH = "vanish.vanish";
+
+    @Inject
+    private Game game;
+
+    @Listener
+    public void onGameInit(GameInitializationEvent event) {
+        CommandSpec vanishCommandSpec = CommandSpec.builder().permission(PERMISSION_VANISH).executor(new VanishCommand()).build();
+        this.game.getCommandManager().register(this, vanishCommandSpec, "vanish", "v");
+    }
 }

src/main/java/org/kitteh/vanish/VanishCommand.java

@@ -0,0 +1,55 @@
+/*
+ * * Copyright (C) 2016 Matt Baxter http://kitteh.org
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.kitteh.vanish;
+
+import org.spongepowered.api.command.CommandException;
+import org.spongepowered.api.command.CommandResult;
+import org.spongepowered.api.command.CommandSource;
+import org.spongepowered.api.command.args.CommandContext;
+import org.spongepowered.api.command.spec.CommandExecutor;
+import org.spongepowered.api.data.key.Keys;
+import org.spongepowered.api.entity.living.player.Player;
+import org.spongepowered.api.text.Text;
+import org.spongepowered.api.text.format.TextColors;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Vanish!
+ */
+class VanishCommand implements CommandExecutor {
+    @Nonnull
+    @Override
+    public CommandResult execute(@Nonnull CommandSource commandSource, @Nonnull CommandContext commandContext) throws CommandException {
+        if (!(commandSource instanceof Player)) {
+            commandSource.sendMessage(Text.of(TextColors.RED, "Vanish currently can only be used by players"));
+            return CommandResult.empty();
+        }
+        Player player = (Player) commandSource;
+        boolean wasVisible = player.get(Keys.INVISIBLE).orElse(false);
+        player.offer(Keys.INVISIBLE, !wasVisible);
+        player.sendMessage(Text.of(TextColors.AQUA, "You are now " + (wasVisible ? "" : "in") + "visible"));
+        return CommandResult.success();
+    }
+}