main menu server start option

1 files changed, 84 insertions, 0 deletions

diff --git a/client/server.gd b/client/server.gd
new file mode 100644
index 00000000..c935b645
--- /dev/null
+++ b/client/server.gd
@@ -0,0 +1,84 @@
+class_name GameServer
+extends Node
+
+var thread = null
+var pid = null
+
+var state = State.TESTING
+enum State {
+	TESTING,
+	UNAVAILABLE,
+	STOPPED,
+	STARTING,
+	RUNNING,
+}
+
+var sem = Semaphore.new()
+var thread_result = null;
+
+func _ready():
+	state = State.TESTING
+	thread = Thread.new()
+	thread.start(_test_server)
+
+
+func start():
+	if state != State.STOPPED: 
+		push_error("server cant be started")
+		return
+	state = State.STARTING
+	thread = Thread.new()
+	thread.start(_server_exec)
+
+func stop():
+	if state != State.RUNNING:
+		push_error("server cant be stopped")
+		return
+	OS.kill(pid)
+
+func _test_server():
+	var output = []
+	thread_result = OS.execute("undercooked-server", ["version"], output, true, false)
+	sem.post()
+
+func _server_exec():
+	thread_result = OS.create_process("undercooked-server", [], false)
+	if thread_result >= 0:
+		var ok = false
+		while not ok:
+			var conn = StreamPeerTCP.new()
+			if conn.connect_to_host("127.0.0.1", 27032) == OK:
+				while conn.poll() == OK:
+					if conn.get_status() == StreamPeerTCP.STATUS_ERROR: break
+					elif conn.get_status() == StreamPeerTCP.STATUS_CONNECTED: ok = true; break
+					OS.delay_msec(10)
+			OS.delay_msec(500 if not ok else 50)
+	sem.post()
+
+func _process(_delta):
+	match state:
+		State.TESTING:
+			if sem.try_wait():
+				print("Server: Test result=", thread_result)
+				if thread_result == 0: state = State.STOPPED
+				else: state = State.UNAVAILABLE
+				thread.wait_to_finish()
+				thread = null
+		State.STARTING:
+			if sem.try_wait():
+				if thread_result >= 0: 
+					state = State.RUNNING
+					pid = thread_result
+					print("Server: Started pid=", thread_result)
+				else: state = State.STOPPED
+				thread.wait_to_finish()
+				thread = null
+		State.RUNNING:
+			if not OS.is_process_running(pid):
+				print("Server: Stopped")
+				state = State.STOPPED
+				pid = null
+
+func _exit_tree():
+	if thread != null: thread.wait_to_finish()
+	if pid != null: OS.kill(pid)