SaverLoader base

metroidvania/SaverLoader.gd

@@ -0,0 +1,36 @@
+extends Node
+
+const save_path = "user://savegame.save"
+
+func save_game():
+	var save_game = File.new()
+	save_game.open(save_path, File.WRITE)
+	var persistingNodes = get_tree().get_nodes_in_group("Persists")
+	for node in persistingNodes:
+		var nodeData = node.save()
+		save_game.store_line(to_json(nodeData))
+	save_game.close()
+	
+func load_game():
+	var save_game = File.new()
+
+	if not save_game.file_exists(save_path):
+		return
+	
+	var persistingNodes = get_tree().get_nodes_in_group("Persists")
+	for node in persistingNodes:
+		node.queue_free()
+		
+	save_game.open(save_path, File.READ)
+	while not save_game.eof_reached():
+		var current_line = parse_json(save_game.get_line())
+		if current_line != null:
+			var newNode = load(current_line["filename"]).instance()
+			get_node(current_line["parent"]).add_child(newNode, true)
+			newNode.position = Vector2(current_line["position_x"], current_line["position_y"])
+			for property in current_line.keys():
+				if property != "filename" and property != "parent" and property != "position_x" and property != "position_y":
+					newNode.set(property, current_line[property])
+
+	save_game.close()
+	

metroidvania/Scenes/Player/Player.gd

@@ -87,7 +87,7 @@ func _physics_process(delta):
 		
 	if Input.is_action_pressed("fire_missile") and fireBulletTimer.time_left == 0 and PlayerStats.missiles > 0 and PlayerStats.missiles_unlocked:
 		fire_missile()
-
+		
 func fire_bullet():
 	var bullet = Utils.instance_scene_on_main(PlayerBullet, muzzle.global_position)
 	bullet.velocity = Vector2.RIGHT.rotated(playerGun.rotation) * bullet_speed
@@ -233,6 +233,15 @@ func wall_detach(delta, wall_axis):
 	if wall_axis == 0 or is_on_floor():
 		state = MOVE
 
+func save():
+	var data = {
+		"filename": get_filename(),
+		"parent": get_parent().get_path(),
+		"position_x": position.x,
+		"position_y": position.y
+	}
+	return data
+
 func _on_Hurtbox_hit(damage):
 	if not invincible:
 		PlayerStats.health -= damage

metroidvania/Scenes/Player/Player.tscn

@@ -122,7 +122,9 @@ tracks/1/keys = {
 } ]
 }
 
-[node name="Player" type="KinematicBody2D"]
+[node name="Player" type="KinematicBody2D" groups=[
+"Persists",
+]]
 collision_mask = 2
 script = ExtResource( 2 )
 

metroidvania/project.godot

@@ -41,6 +41,7 @@ config/icon="res://icon.png"
 Utils="*res://Utils.gd"
 ResourceLoader="*res://ResourceLoader.gd"
 Events="*res://Events.gd"
+SaverLoader="*res://SaverLoader.gd"
 
 [display]