Resource pack API

api/src/main/java/com/velocitypowered/api/event/player/PlayerResourcePackStatusEvent.java

@@ -0,0 +1,49 @@
+package com.velocitypowered.api.event.player;
+
+import com.google.common.base.Preconditions;
+import com.velocitypowered.api.proxy.Player;
+
+public class PlayerResourcePackStatusEvent {
+  private final Player player;
+  private final Status result;
+
+  public PlayerResourcePackStatusEvent(Player player, Status result) {
+    this.player = Preconditions.checkNotNull(player, "player");
+    this.result = Preconditions.checkNotNull(result, "result");
+  }
+
+  public Player getPlayer() {
+    return player;
+  }
+
+  public Status getResult() {
+    return result;
+  }
+
+  @Override
+  public String toString() {
+    return "PlayerResourcePackStatusEvent{"
+        + "player=" + player
+        + ", result=" + result
+        + '}';
+  }
+
+  public enum Status {
+    /**
+     * The resource pack was applied successfully.
+     */
+    SUCCESSFUL,
+    /**
+     * The player declined to download the resource pack.
+     */
+    DECLINED,
+    /**
+     * The player could not download the resource pack.
+     */
+    FAILED_DOWNLOAD,
+    /**
+     * The player has accepted the resource pack and is now downloading it.
+     */
+    ACCEPTED
+  }
+}

api/src/main/java/com/velocitypowered/api/proxy/Player.java

@@ -151,4 +151,20 @@ public interface Player extends CommandSource, InboundConnection, ChannelMessage
    * @param input the chat input to send
    */
   void spoofChatInput(String input);
+
+  /**
+   * Sends the specified resource pack from {@code url} to the user. If at all possible, send the
+   * resource pack using {@link #sendResourcePack(String, byte[])}.
+   *
+   * @param url the URL for the resource pack
+   */
+  void sendResourcePack(String url);
+
+  /**
+   * Sends the specified resource pack from {@code url} to the user.
+   *
+   * @param url the URL for the resource pack
+   * @param hash the SHA-1 hash value for the resource pack
+   */
+  void sendResourcePack(String url, byte[] hash);
 }