diff --git a/lib/tree/activateable.ts b/lib/tree/activateable.ts
new file mode 100644
index 0000000..d88b771
--- /dev/null
+++ b/lib/tree/activateable.ts
@@ -0,0 +1,63 @@
+import {BlueshellState} from '../nodes/BlueshellState';
+import {Base as Action} from '../nodes/Base';
+import {ResultCode, resultCodes} from '../utils/resultCodes';
+
+function activationCheck<E>(storage: any) {
+	return storage.lastResult !== resultCodes.RUNNING;
+}
+
+function reactivationCheck<E>(storage: any, e: E) {
+	return (<any>e).type === 'reactivate' || storage.lastResult !== resultCodes.RUNNING;
+}
+
+class Activatable<S extends BlueshellState, E> extends Action<S, E> {
+	constructor(
+		name: string,
+		private readonly onActivateFn: RunningFn<S, E>,
+		private readonly onRunningFn: RunningFn<S, E>,
+		private readonly activationCheck: (storage: any, e: E) => boolean,
+	) {
+		super(name);
+	}
+
+	onEvent(state: S, event: E): ResultCode {
+		const storage = this.getNodeStorage(state);
+
+		if (storage.lastResult !== resultCodes.ERROR) {
+			if (this.activationCheck) {
+				return this.onActivateFn(state, event);
+			} else {
+				return this.onRunningFn(state, event);
+			}
+		} else {
+			return resultCodes.ERROR;
+		}
+	}
+}
+
+export type ActivateFn<S extends BlueshellState, E> = (state: S, event: E) => ResultCode
+export type RunningFn<S extends BlueshellState, E> = (state: S, event: E) => ResultCode
+
+export function activatable<S extends BlueshellState, E>(
+	name: string,
+	onActivateFn: ActivateFn<S, E>,
+	onRunningFn: RunningFn<S, E>,
+): Action<S, E> {
+	return new Activatable<S, E>(
+		name,
+		onActivateFn,
+		onRunningFn,
+		activationCheck);
+}
+
+export function reactivatable<S extends BlueshellState, E>(
+	name: string,
+	onActivateFn: ActivateFn<S, E>,
+	onRunningFn: RunningFn<S, E>,
+): Action<S, E> {
+	return new Activatable(
+		name,
+		onActivateFn,
+		onRunningFn,
+		reactivationCheck);
+}
diff --git a/lib/tree/after.ts b/lib/tree/after.ts
new file mode 100644
index 0000000..5f2d637
--- /dev/null
+++ b/lib/tree/after.ts
@@ -0,0 +1,28 @@
+import {BlueshellState} from '../nodes/BlueshellState';
+import {Decorator} from '../nodes/Decorator';
+import {DecoratorFn} from './decoratorFunction';
+import {Base as Action} from '../nodes/Base';
+import {ResultCode} from '../utils/resultCodes';
+
+
+class After<S extends BlueshellState, E> extends Decorator<S, E> {
+	constructor(
+		name: string,
+		action: Action<S, E>,
+		private readonly after: DecoratorFn,
+	) {
+		super(name, action);
+	}
+	_afterEvent(res: ResultCode, s: S, e: E) {
+		this.after(s, e);
+
+		return super._afterEvent(res, s, e);
+	}
+}
+
+export function after<S extends BlueshellState, E>(
+	action: Action<S, E>,
+	afterFn: DecoratorFn,
+): Action<S, E> {
+	return new After(`before-$action.name`, action, afterFn);
+}
diff --git a/lib/tree/before.ts b/lib/tree/before.ts
new file mode 100644
index 0000000..0af6b8d
--- /dev/null
+++ b/lib/tree/before.ts
@@ -0,0 +1,27 @@
+import {BlueshellState} from '../nodes/BlueshellState';
+import {Decorator} from '../nodes/Decorator';
+import {DecoratorFn} from './decoratorFunction';
+import {Base as Action} from '../nodes/Base';
+
+
+class Before<S extends BlueshellState, E> extends Decorator<S, E> {
+	constructor(
+		name: string,
+		action: Action<S, E>,
+		private readonly before: DecoratorFn,
+	) {
+		super(name, action);
+	}
+	_beforeEvent(s: S, e: E) {
+		this.before(s, e);
+
+		return super._beforeEvent(s, e);
+	}
+}
+
+export function before<S extends BlueshellState, E>(
+	action: Action<S, E>,
+	beforeFn: DecoratorFn,
+): Action<S, E> {
+	return new Before(`before-$action.name`, action, beforeFn);
+}
diff --git a/lib/tree/decoratorFunction.ts b/lib/tree/decoratorFunction.ts
new file mode 100644
index 0000000..f7e96ff
--- /dev/null
+++ b/lib/tree/decoratorFunction.ts
@@ -0,0 +1,3 @@
+export interface DecoratorFn {
+	<S, E>(state: S, event: E): void;
+}
diff --git a/test/tree/complexTree.alt.spec.ts b/test/tree/complexTree.alt.spec.ts
new file mode 100644
index 0000000..deffb59
--- /dev/null
+++ b/test/tree/complexTree.alt.spec.ts
@@ -0,0 +1,130 @@
+import {activatable, RunningFn} from '../../lib/tree/activateable';
+import {resultCodes, ResultCode} from '../../lib/utils/resultCodes';
+import {BlueshellState} from '../../lib/nodes/BlueshellState';
+
+export type isCompletionEventFn<S extends BlueshellState, E> = (state: S, event: E) => boolean;
+export type onCompleteFn<S extends BlueshellState, E> = (state: S, event: E) => void;
+export type onIncompleteFn<S extends BlueshellState, E> = (state: S, event: E) => void;
+
+function mkRunningFn<S extends BlueshellState, E>(
+	isCompletionEvent: isCompletionEventFn<S, E>,
+	onComplete: onCompleteFn<S, E>,
+	onIncomplete: onIncompleteFn<S, E>,
+): RunningFn<S, E> {
+	// log.debug(`${this.name}: runningEvent`);
+
+	return (state: S, event: E) => {
+		if (isCompletionEvent(state, event)) {
+			// console.log(`${this.name}: Event type '${event.type}' matches done condition`);
+			onComplete(state, event);
+			return resultCodes.SUCCESS;
+		} else {
+			onIncomplete(state, event);
+			return resultCodes.RUNNING;
+		}
+	}
+
+}
+
+interface TypedEvent {
+	type: string
+};
+
+interface ActionData {
+
+}
+
+interface CommandActionData<S extends BlueshellState, E extends TypedEvent> {
+	name: string,
+	running?: RunningFn<S, E>,
+}
+
+
+// commandAction
+function commandAction<S extends BlueshellState, E extends TypedEvent>(
+	actionData: CommandActionData<S, E>,
+) {
+	const setCommands = function(mfp: S, event: E) {
+		// const makeResult = this.makeCommand(mfp, event);
+		// let cmds = Array.isArray(makeResult) ? makeResult : [makeResult];
+
+		// if (mfp.debug && app.serviceConfig.enableVisualDebug) {
+		// 	cmds = cmds.concat(DebugCommand.debug(mfp.id, mfp.debug));
+		// }
+		// mfp.outgoingCommands = cmds;
+	};
+
+	return activatable<S, E>(
+		actionData.name,
+		(s: S, event: E) => {
+			console.log(`${this.name}: Activate`);
+			setCommands(s, event);
+
+			return resultCodes.RUNNING;
+		},
+		// not works
+		actionData.running || () => resultCodes.SUCCESS,
+		// works
+		// actionData.running ? actionData.running : () => resultCodes.SUCCESS,
+	)
+}
+
+
+interface SimpleActionData<S extends BlueshellState, E extends TypedEvent> implements ActionData {
+	name: string,
+	doneEventType: string,
+	onComplete?: onCompleteFn<S, E>,
+	onIncomplete?: onIncompleteFn<S, E>,
+}
+
+// simpleAction
+function simpleAction<S extends BlueshellState, E extends TypedEvent>(
+	actionData: SimpleActionData<S, E>,
+) {
+	return commandAction<S, E>({
+		name,
+		running: mkRunningFn(
+			(s: S, event: E) => event.type === actionData.doneEventType,
+			actionData.onComplete || actionData.onComplete,
+			actionData.onIncomplete || actionData.onIncomplete,
+		)
+	});
+}
+
+
+class ButtonEvent implements TypedEvent {
+	type: 'button'
+	isAction: boolean
+};
+
+// buttonAction
+function buttonAction<S extends BlueshellState, E extends TypedEvent>(
+) {
+	return simpleAction<S, E>({
+		name,
+		'button',
+		(state: S, event: E) => {
+			return super.isCompletionEvent(event) &&
+			(event instanceof ButtonEvent) &&
+			event.isAction;
+		}
+	});
+}
+
+describe('complexTree', function() {
+	it('should build a complex tree', function() {
+		const bootup = activatable(
+			'bootup',
+			() => resultCodes.RUNNING,
+			() => resultCodes.SUCCESS,
+		);
+
+		const waitForClick =
+
+		const fullTree = latchedSequence([
+			bootup,
+		]);
+
+		fullTree.handleEvent();
+	});
+});
diff --git a/test/tree/complexTree.spec.ts b/test/tree/complexTree.spec.ts
new file mode 100644
index 0000000..bd47564
--- /dev/null
+++ b/test/tree/complexTree.spec.ts
@@ -0,0 +1,116 @@
+import {activatable, RunningFn} from '../../lib/tree/activateable';
+import {resultCodes, ResultCode} from '../../lib/utils/resultCodes';
+import {BlueshellState} from '../../lib/nodes/BlueshellState';
+
+// commandAction
+function commandAction<S extends BlueshellState, E>(
+	name: string,
+	running: RunningFn<S, E> = () => resultCodes.SUCCESS,
+) {
+	const setCommands = function(mfp: S, event: E) {
+		// const makeResult = this.makeCommand(mfp, event);
+		// let cmds = Array.isArray(makeResult) ? makeResult : [makeResult];
+
+		// if (mfp.debug && app.serviceConfig.enableVisualDebug) {
+		// 	cmds = cmds.concat(DebugCommand.debug(mfp.id, mfp.debug));
+		// }
+		// mfp.outgoingCommands = cmds;
+	};
+
+	return activatable<S, E>(
+		name,
+		(s: S, event: E) => {
+			console.log(`${this.name}: Activate`);
+			setCommands(s, event);
+
+			return resultCodes.RUNNING;
+		},
+		running
+	)
+}
+
+export type isCompletionEventFn<S extends BlueshellState, E> = (state: S, event: E) => boolean;
+export type onCompleteFn<S extends BlueshellState, E> = (state: S, event: E) => void;
+export type onIncompleteFn<S extends BlueshellState, E> = (state: S, event: E) => void;
+
+function running<S extends BlueshellState, E>(
+	isCompletionEvent: isCompletionEventFn<S, E>,
+	onComplete: onCompleteFn<S, E>,
+	onIncomplete: onIncompleteFn<S, E>,
+): RunningFn<S, E> {
+	// log.debug(`${this.name}: runningEvent`);
+
+	return (state: S, event: E) => {
+		if (isCompletionEvent(state, event)) {
+			// console.log(`${this.name}: Event type '${event.type}' matches done condition`);
+			onComplete(state, event);
+			return resultCodes.SUCCESS;
+		} else {
+			onIncomplete(state, event);
+			return resultCodes.RUNNING;
+		}
+	}
+
+}
+
+interface TypedEvent {
+	type: string
+};
+
+// simpleAction
+function simpleAction<S extends BlueshellState, E extends TypedEvent>(
+	name: string,
+	doneEventType: string,
+	onComplete: onCompleteFn<S, E> = () => {},
+	onIncomplete: onIncompleteFn<S, E> = () => {},
+) {
+	return commandAction<S, E>(
+		name,
+		running(
+			(s: S, event: E) => event.type === doneEventType,
+			onComplete,
+			onIncomplete,
+		)
+	);
+}
+
+class ButtonEvent implements TypedEvent {
+	type: 'button'
+	isAction: boolean
+};
+
+// buttonAction
+function buttonAction<S extends BlueshellState, E extends TypedEvent>(
+	name: string,
+	doneEventType: string,
+	onComplete: onCompleteFn<S, E> = () => {},
+	onIncomplete: onIncompleteFn<S, E> = () => {},
+) {
+	return simpleAction<S, E>(
+		name,
+		'button',
+		(state: S, event: E) => {
+			return super.isCompletionEvent(event) &&
+			(event instanceof ButtonEvent) &&
+			event.isAction;
+		}
+	);
+}
+
+describe('complexTree', function() {
+	it('should build a complex tree', function() {
+		const bootup = activatable(
+			'bootup',
+			() => resultCodes.RUNNING,
+			() => resultCodes.SUCCESS,
+		);
+
+		const waitForClick =
+
+		const fullTree = latchedSequence([
+			bootup,
+		]);
+
+		fullTree.handleEvent();
+	});
+});