diff --git a/Cannon.gd b/Cannon.gd
new file mode 100644
index 0000000..56a55e5
--- /dev/null
+++ b/Cannon.gd
@@ -0,0 +1,31 @@
+extends Module
+
+class_name Cannon
+
+enum STATE {INACTIVE, RELOADING, SHOOTING}
+
+#------------Methods-------------#
+func _ready():
+	var root = get_tree().root.get_child(0)
+	root.shooting.connect(_on_signal_shooting)
+	maxStashValue = 1
+	currentStashValue = 0
+	currentState = STATE.INACTIVE
+#TODO: FINISH
+func interact():
+	if currentState == STATE.INACTIVE:
+		#TODO: RELOADING
+		if currentStashValue < maxStashValue:
+			currentState = STATE.RELOADING
+			++currentStashValue
+		return
+		
+	return
+
+func _on_signal_shooting():
+	if currentStashValue >= 1 and currentState == STATE.INACTIVE:
+		currentState = STATE.SHOOTING
+		--currentStashValue
+		#TODO: SHOOTING
+		currentState = STATE.INACTIVE
+	return
diff --git a/Engine.gd b/Engine.gd
new file mode 100644
index 0000000..760d79e
--- /dev/null
+++ b/Engine.gd
@@ -0,0 +1,26 @@
+extends Module
+class_name TrainEngine
+
+
+enum STATE {RUNNING, DEAD}
+
+#------------Methods-------------#
+func _ready():
+	var root = get_tree().root.get_child(0)
+	maxStashValue = 100
+	currentStashValue = 100
+	currentState = STATE.RUNNING
+#TODO: FINISH
+func interact():
+	if currentState == STATE.RUNNING:
+		if currentStashValue < maxStashValue:
+			currentStashValue += 10 
+			if currentStashValue > maxStashValue:
+				currentStashValue = maxStashValue
+				
+		return
+	#TODO: Repair Train
+	currentState = STATE.RUNNING
+	
+
+
diff --git a/Module.gd b/Module.gd
new file mode 100644
index 0000000..ca86d7d
--- /dev/null
+++ b/Module.gd
@@ -0,0 +1,47 @@
+extends Node
+
+class_name Module
+#-----------Parameters----------------'
+var currentStashValue  = 0 : set = _set_currentStashValue, get = _get_currentStashValue
+
+var maxStashValue  = 0 : set = _set_maxStashValue, get = _get_maxStashValue
+
+var currentState = null : set = _set_state, get = _get_state
+
+var level = 0 : set = _set_level, get = _get_level
+
+
+
+
+enum MODULE_TYPE {CANNON, STEERING, ENGINE, STORAGE}
+
+
+
+#------------Methods-------------#
+
+
+func interact():
+	pass
+
+
+func _ready():
+	var root = get_tree().root.get_child(0)
+	
+
+#-----------Setter and Getter---------------#
+func _set_currentStashValue(newValue):
+	currentStashValue = newValue
+func _get_currentStashValue():
+	return currentStashValue
+func _set_maxStashValue(newValue):
+	currentStashValue = newValue
+func _get_maxStashValue():
+	return currentStashValue
+func _set_level(newValue):
+	level = newValue
+func _get_level():
+	return level
+func _set_state(newValue):
+	currentState = newValue
+func _get_state():
+	return currentState
diff --git a/Module.tscn b/Module.tscn
new file mode 100644
index 0000000..ac2c192
--- /dev/null
+++ b/Module.tscn
@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://b87b68ghm4dkk"]
+
+[ext_resource type="Script" path="res://Module.gd" id="1_42v8k"]
+
+[node name="Node" type="Node"]
+script = ExtResource("1_42v8k")
diff --git a/Storage.gd b/Storage.gd
new file mode 100644
index 0000000..840cc53
--- /dev/null
+++ b/Storage.gd
@@ -0,0 +1,23 @@
+extends Module
+
+class_name Storage
+
+enum TYPE {AMMO, GUNPOWDER, FUEL}
+
+@export var currentType: TYPE
+
+#------------Methods-------------#
+func _ready():
+	var root = get_tree().root.get_child(0)
+	root.shooting.connect(_on_signal_storing)
+	maxStashValue = 5
+	currentStashValue = 0
+func interact():
+	if currentStashValue >= 1:
+		--currentStashValue
+	return
+func _on_signal_storing():
+	if currentStashValue < maxStashValue:
+			++currentStashValue
+	return
+	
diff --git a/cannon.tscn b/cannon.tscn
new file mode 100644
index 0000000..4c528ea
--- /dev/null
+++ b/cannon.tscn
@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://d2g0of2prwwj4"]
+
+[ext_resource type="Script" path="res://Cannon.gd" id="1_mopo1"]
+
+[node name="Cannon" type="Node"]
+script = ExtResource("1_mopo1")
diff --git a/project.godot b/project.godot
index 40c705b..401df3a 100644
--- a/project.godot
+++ b/project.godot
@@ -8,6 +8,34 @@
 
 config_version=5
 
+_global_script_classes=[{
+"base": "Module",
+"class": &"Cannon",
+"language": &"GDScript",
+"path": "res://Cannon.gd"
+}, {
+"base": "Node",
+"class": &"Module",
+"language": &"GDScript",
+"path": "res://Module.gd"
+}, {
+"base": "Module",
+"class": &"Storage",
+"language": &"GDScript",
+"path": "res://Storage.gd"
+}, {
+"base": "Module",
+"class": &"TrainEngine",
+"language": &"GDScript",
+"path": "res://Engine.gd"
+}]
+_global_script_class_icons={
+"Cannon": "",
+"Module": "",
+"Storage": "",
+"TrainEngine": ""
+}
+
 [application]
 
 config/name="Semester Game Jam 2022"