api: add on tick callback

runelite-api/src/main/java/net/runelite/api/hooks/Callbacks.java

@@ -53,9 +53,14 @@ public interface Callbacks
 	void postDeferred(Object event);
 
 	/**
-	 * Called each client cycle.
+	 * Called each tick
 	 */
-	void clientMainLoop();
+	void tick();
+
+	/**
+	 * Called each frame
+	 */
+	void frame();
 
 	/**
 	 * Called after receiving update NPCs packet from server.

runelite-client/src/main/java/net/runelite/client/callback/Hooks.java

@@ -176,7 +176,7 @@ public class Hooks implements Callbacks
 	}
 
 	@Override
-	public void clientMainLoop()
+	public void tick()
 	{
 		if (shouldProcessGameTick)
 		{
@@ -190,8 +190,6 @@ public class Hooks implements Callbacks
 			client.setTickCount(tick + 1);
 		}
 
-		eventBus.post(BEFORE_RENDER);
-
 		clientThread.invoke();
 
 		long now = System.nanoTime();
@@ -221,6 +219,12 @@ public class Hooks implements Callbacks
 		}
 	}
 
+	@Override
+	public void frame()
+	{
+		eventBus.post(BEFORE_RENDER);
+	}
+
 	/**
 	 * When the world map opens it loads about ~100mb of data into memory, which
 	 * represents about half of the total memory allocated by the client.