Bump modlauncher to 3.2.x. Add a sender modid and document IMC. Closes #5746

Signed-off-by: cpw <cpw+github@weeksfamily.ca>

src/main/java/net/minecraftforge/fml/InterModComms.java

@@ -36,42 +36,99 @@ public class InterModComms
     public static final class IMCMessage {
         private final String modId;
         private final String method;
+        private final String senderModId;
         private final Supplier<?> thing;
 
-        IMCMessage(String modId, String method, Supplier<?> thing)
+        IMCMessage(String senderModId, String modId, String method, Supplier<?> thing)
         {
+            this.senderModId = senderModId;
             this.modId = modId;
             this.method = method;
             this.thing = thing;
         }
 
+        /**
+         * @return The modid of the sender. This is supplied by the caller, or by the active mod container context.
+         * Consider it unreliable.
+         */
+        public final String getSenderModId() {
+            return this.senderModId;
+        }
+
+        /**
+         * @return The modid being sent to.
+         */
         public final String getModId() {
             return this.modId;
         }
 
+        /**
+         * @return The method being sent to.
+         */
         public final String getMethod() {
             return this.method;
         }
 
+        /**
+         * @param <T> The type of the message.
+         * @return A {@link Supplier} of the message.
+         */
         @SuppressWarnings("unchecked")
         public final <T> Supplier<T> getMessageSupplier() {
             return (Supplier<T>)this.thing;
         }
     }
+
     private static ConcurrentMap<String, ConcurrentLinkedQueue<IMCMessage>> containerQueues = new ConcurrentHashMap<>();
 
+    /**
+     * Send IMC to remote. Sender will default to the active modcontainer, or minecraft if not.
+     *
+     * @param modId the mod id to send to
+     * @param method the method name to send
+     * @param thing the thing associated with the method name
+     * @return true if the message was enqueued for sending (the target modid is loaded)
+     */
     public static boolean sendTo(final String modId, final String method, final Supplier<?> thing) {
         if (!ModList.get().isLoaded(modId)) return false;
-        containerQueues.computeIfAbsent(modId, k->new ConcurrentLinkedQueue<>()).add(new IMCMessage(modId, method, thing));
+        containerQueues.computeIfAbsent(modId, k->new ConcurrentLinkedQueue<>()).add(new IMCMessage(ModLoadingContext.get().getActiveContainer().getModId(), modId, method, thing));
         return true;
     }
 
+    /**
+     * Send IMC to remote.
+     *
+     * @param senderModId the mod id you are sending from
+     * @param modId the mod id to send to
+     * @param method the method name to send
+     * @param thing the thing associated with the method name
+     * @return true if the message was enqueued for sending (the target modid is loaded)
+     */
+    public static boolean sendTo(final String senderModId, final String modId, final String method, final Supplier<?> thing) {
+        if (!ModList.get().isLoaded(modId)) return false;
+        containerQueues.computeIfAbsent(modId, k->new ConcurrentLinkedQueue<>()).add(new IMCMessage(senderModId, modId, method, thing));
+        return true;
+    }
+
+    /**
+     * Retrieve pending messages for your modid. Use the predicate to filter the method name.
+     *
+     * @param modId the modid you are querying for
+     * @param methodMatcher a predicate for the method you are interested in
+     * @return All messages passing the supplied method predicate
+     */
     public static Stream<IMCMessage> getMessages(final String modId, final Predicate<String> methodMatcher) {
         ConcurrentLinkedQueue<IMCMessage> queue = containerQueues.get(modId);
         if (queue == null) return Stream.empty();
         return StreamSupport.stream(new QueueFilteringSpliterator(queue, methodMatcher), false);
     }
 
+    /**
+     * Retrieve all message for your modid.
+     *
+     * @param modId the modid you are querying for
+     * @return All messages
+     */
     public static Stream<IMCMessage> getMessages(final String modId) {
         return getMessages(modId, s->Boolean.TRUE);
     }