Add BeforeRender event

runelite-api/src/main/java/net/runelite/api/events/BeforeRender.java

@@ -0,0 +1,32 @@
+/*
+ * Copyright (c) 2018 Abex
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package net.runelite.api.events;
+
+/**
+ * Posted at the start of every frame
+ */
+public class BeforeRender
+{
+}

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

@@ -46,6 +46,7 @@ import net.runelite.api.MainBufferProvider;
 import net.runelite.api.RenderOverview;
 import net.runelite.api.Renderable;
 import net.runelite.api.WorldMapManager;
+import net.runelite.api.events.BeforeRender;
 import net.runelite.api.events.GameTick;
 import net.runelite.api.hooks.Callbacks;
 import net.runelite.api.hooks.DrawCallbacks;
@@ -81,6 +82,7 @@ public class Hooks implements Callbacks
 	private static final OverlayRenderer renderer = injector.getInstance(OverlayRenderer.class);
 
 	private static final GameTick GAME_TICK = new GameTick();
+	private static final BeforeRender BEFORE_RENDER = new BeforeRender();
 
 	@Inject
 	private EventBus eventBus;
@@ -149,6 +151,8 @@ public class Hooks implements Callbacks
 			client.setTickCount(tick + 1);
 		}
 
+		eventBus.post(BEFORE_RENDER);
+
 		clientThread.invoke();
 
 		long now = System.currentTimeMillis();