move standalone projects into own directory

projects/_standalone/nat-godot-playground/addons/haxe/scripts/tab.gd

@@ -0,0 +1,67 @@
+tool
+extends Control
+
+onready var button := $VBoxContainer/Button
+onready var text_log := $VBoxContainer/TextLog
+
+var base:Control
+var icon := 0
+var icons := []
+var mutex := Mutex.new()
+var output := []
+var time := 0.0
+var thread:Thread = null
+
+func setup(base:Control) -> void:
+	self.base = base
+	
+	for i in range(8):
+		icons.append(base.get_icon("Progress%s"%(i + 1), "EditorIcons"))
+	
+func _ready() -> void:
+	button.connect("button_down", self, "build_haxe_project")
+
+func build_haxe_project() -> void:
+	if thread != null:
+		return
+	
+	thread = Thread.new()
+	
+	button.icon = icons[0]
+	button.text = "Building Haxe Project ..."
+	icon = 0
+	text_log.text = ""
+	time = 0.0
+	output = []
+	
+	thread.start(self, "run_thread")
+
+func _process(delta:float) -> void:
+	if thread != null:
+		update_log()
+		time += delta
+		if time > 0.1:
+			time = 0
+			icon = (icon + 1) % 8
+			button.icon = icons[icon]
+
+func run_thread(userdata) -> void:
+	var ret := OS.execute("haxe", ["build.hxml"], true, output, true)
+	update_log()
+	button.icon = base.get_icon("StatusSuccess" if ret == 0 else "StatusError", "EditorIcons")
+	button.text = "Build Haxe Project"
+	call_deferred("end_thread")
+
+func end_thread() -> void:
+	thread.wait_to_finish()
+	thread = null
+
+func update_log() -> void:
+	mutex.lock()
+	text_log.text = PoolStringArray(output).join("\n")
+	mutex.unlock()
+
+func _exit_tree():
+	if thread != null:
+		thread.wait_to_finish()
+		thread = null