From ba50a90e200d189012289e56efa0865468ac4a08 Mon Sep 17 00:00:00 2001
From: Vortrex <3858226+VortrexFTW@users.noreply.github.com>
Date: Mon, 21 Mar 2022 23:55:35 -0500
Subject: [PATCH] Allow mouse wheel for chat history scroll

---
 scripts/client/chatbox.js | 15 +++++++++++++++
 scripts/client/event.js   | 20 ++++++++++++++++++++
 2 files changed, 35 insertions(+)

diff --git a/scripts/client/chatbox.js b/scripts/client/chatbox.js
index 28408a28..46813eee 100644
--- a/scripts/client/chatbox.js
+++ b/scripts/client/chatbox.js
@@ -107,4 +107,19 @@ function updateChatBox() {
 	}
 }
 
+// ===========================================================================
+
+function processMouseWheelForChatBox(up) {
+	// There isn't a way to detect whether chat input is active, but mouse cursor is forced shown when typing so ¯\_(ツ)_/¯
+	if(!gui.cursorEnabled) {
+		return false;
+	}
+
+	if(up) {
+		chatBoxScrollUp();
+	} else {
+		chatBoxScrollDown()
+	}
+}
+
 // ===========================================================================
\ No newline at end of file
diff --git a/scripts/client/event.js b/scripts/client/event.js
index 91d1e502..760d08b8 100644
--- a/scripts/client/event.js
+++ b/scripts/client/event.js
@@ -51,6 +51,8 @@ function addAllEventHandlers() {
 	addEventHandler("OnFocus", onFocus);
 
 	addEventHandler("OnCameraProcess", onCameraProcess);
+
+	addEventHandler("OnMouseWheel", onMouseWheel);
 }
 
 // ===========================================================================
@@ -231,4 +233,22 @@ function onChatOutput(event, messageText, colour) {
 	//receiveChatBoxMessageFromServer(messageText, colour);
 }
 
+// ===========================================================================
+
+function onMouseWheel(event, mouseId, deltaCoordinates, flipped) {
+	if(!flipped) {
+		if(deltaCoordinates.y > 0) {
+			processMouseWheelForChatBox(true);
+		} else {
+			processMouseWheelForChatBox(false);
+		}
+	} else {
+		if(deltaCoordinates.y > 0) {
+			processMouseWheelForChatBox(false);
+		} else {
+			processMouseWheelForChatBox(true);
+		}
+	}
+}
+
 // ===========================================================================
\ No newline at end of file