Add an onSendChatMessage event

src/main/java/baritone/bot/GameEventHandler.java

@@ -1,6 +1,7 @@
 package baritone.bot;
 
 import baritone.bot.event.IGameEventListener;
+import baritone.bot.event.events.ChatEvent;
 import net.minecraft.client.settings.KeyBinding;
 import org.lwjgl.input.Keyboard;
 
@@ -13,9 +14,7 @@ public final class GameEventHandler implements IGameEventListener {
     GameEventHandler() {}
 
     @Override
-    public final void onTick() {
-    	baritone.Baritone.onTick();
-    }
+    public final void onTick() {}
 
     @Override
     public void onProcessKeyBinds() {
@@ -33,4 +32,7 @@ public final class GameEventHandler implements IGameEventListener {
             }
         }
     }
-}
+
+    @Override
+    public void onSendChatMessage(ChatEvent event) {}
+}

src/main/java/baritone/bot/event/AbstractGameEventListener.java

@@ -0,0 +1,28 @@
+package baritone.bot.event;
+
+import baritone.bot.event.events.ChatEvent;
+
+/**
+ * An implementation of {@link IGameEventListener} that has all methods
+ * overriden with empty bodies, allowing inheritors of this class to choose
+ * which events they would like to listen in on.
+ *
+ * Has no implementors at the moment, but will likely be used with the
+ * manager/behavior system is ported over to the new system.
+ *
+ * @see IGameEventListener
+ *
+ * @author Brady
+ * @since 8/1/2018 6:29 PM
+ */
+public interface AbstractGameEventListener extends IGameEventListener {
+
+    @Override
+    default void onTick() {}
+
+    @Override
+    default void onProcessKeyBinds() {}
+
+    @Override
+    default void onSendChatMessage(ChatEvent event) {}
+}

src/main/java/baritone/bot/event/IGameEventListener.java

@@ -1,6 +1,8 @@
 package baritone.bot.event;
 
+import baritone.bot.event.events.ChatEvent;
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.entity.EntityPlayerSP;
 
 /**
  * @author Brady
@@ -17,4 +19,9 @@ public interface IGameEventListener {
      * Run once per game tick from {@link Minecraft#processKeyBinds()}
      */
     void onProcessKeyBinds();
+
+    /**
+     * Runs whenever the client player sends a message to the server {@link EntityPlayerSP#sendChatMessage(String)}
+     */
+    void onSendChatMessage(ChatEvent event);
 }

src/main/java/baritone/bot/event/events/ChatEvent.java

@@ -0,0 +1,26 @@
+package baritone.bot.event.events;
+
+import baritone.bot.event.events.type.Cancellable;
+
+/**
+ * @author Brady
+ * @since 8/1/2018 6:39 PM
+ */
+public final class ChatEvent extends Cancellable {
+
+    /**
+     * The message being sent
+     */
+    private final String message;
+
+    public ChatEvent(String message) {
+        this.message = message;
+    }
+
+    /**
+     * @return The message being sent
+     */
+    public final String getMessage() {
+        return this.message;
+    }
+}

src/main/java/baritone/bot/event/events/type/Cancellable.java

@@ -0,0 +1,27 @@
+package baritone.bot.event.events.type;
+
+/**
+ * @author Brady
+ * @since 8/1/2018 6:41 PM
+ */
+public class Cancellable {
+
+    /**
+     * Whether or not this event has been cancelled
+     */
+    private boolean cancelled;
+
+    /**
+     * Cancels this event
+     */
+    public final void cancel() {
+        this.cancelled = true;
+    }
+
+    /**
+     * @return Whether or not this event has been cancelled
+     */
+    public final boolean isCancelled() {
+        return this.cancelled;
+    }
+}

src/main/java/baritone/launch/mixins/MixinEntityPlayerSP.java

@@ -1,14 +1,13 @@
 package baritone.launch.mixins;
 
-import baritone.util.ChatCommand;
+import baritone.bot.Baritone;
+import baritone.bot.event.events.ChatEvent;
 import net.minecraft.client.entity.EntityPlayerSP;
 import org.spongepowered.asm.mixin.Mixin;
 import org.spongepowered.asm.mixin.injection.At;
 import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
-import java.lang.reflect.InvocationTargetException;
-
 /**
  * @author Brady
  * @since 8/1/2018 5:06 PM
@@ -22,11 +21,9 @@ public class MixinEntityPlayerSP {
             cancellable = true
     )
     private void sendChatMessage(String msg, CallbackInfo ci) {
-        try {
-            if (ChatCommand.message(msg))
-                ci.cancel();
-        } catch (IllegalAccessException | InvocationTargetException e) {
-            e.printStackTrace();
-        }
+        ChatEvent event = new ChatEvent(msg);
+        Baritone.INSTANCE.getGameEventHandler().onSendChatMessage(event);
+        if (event.isCancelled())
+            ci.cancel();
     }
 }