callbacks... events, even.

source/funkin/scripting/events/CancellableEvent.hx

@@ -0,0 +1,30 @@
+package funkin.scripting.events;
+
+import funkin.scripting.ScriptPack;
+
+@:allow(ScriptPack)
+class CancellableEvent {
+    @:dox(hide) public var cancelled:Bool = false;
+    @:dox(hide) private var __continueCalls:Bool = false;
+
+    /**
+     * Additional data if used in scripts
+     */
+    public var data:Dynamic = {};
+
+    /**
+     * Prevents default action from occuring.
+     */
+    public function cancel() {
+        cancelled = true;
+    }
+
+    /**
+     * Creates a new cancellable event.
+     * This allows scripts to call `cancel()` to cancel the event.
+     * @param continueCalls Whenever the `ScriptPack` should continue calling functions from other scripts after a script cancelled the event.
+     */
+    public function new(continueCalls:Bool) {
+        __continueCalls = continueCalls;
+    }
+}