ladder kiiiiind of works

scripts/ladder.gd

@@ -0,0 +1,24 @@
+extends Node3D
+
+var is_climbing = false
+
+# Called when the node enters the scene tree for the first time.
+func _ready():
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta):
+	pass
+
+
+func _on_area_3d_body_entered(body):
+	if body.is_in_group("player"):
+		is_climbing = true
+		body.lader_collide(is_climbing)
+
+ 
+func _on_area_3d_body_exited(body):
+	if body.is_in_group("player"):
+		is_climbing = false
+		body.lader_collide(is_climbing)

scripts/player.gd

@@ -4,6 +4,7 @@ extends CharacterBody3D
 var speed
 var double_jump = true
 var gravity = 9.8
+var default_gravity = gravity
 var mouse_input : Vector2
 
 var rng = RandomNumberGenerator.new()
@@ -277,6 +278,15 @@ func _on_pick_up_detection_body_entered(body):
 			level_control.gun_spawn(weapon_id)
 		
 
+func lader_collide(is_climbing):
+	
+	if is_climbing == true:
+		if Input.is_action_pressed("move_up"):
+			velocity.y += 5
+		gravity = 0.0
+	else:
+		gravity = default_gravity
+
 func _on_pick_up_magnet_body_entered(body):
 	if body.is_in_group("pickup") and body.is_in_group("magnet"):
 		body.player = self