1 files changed, 21 insertions, 0 deletions
diff --git a/godot/scenes/environment/Ladder.gd b/godot/scenes/environment/Ladder.gd
new file mode 100644
index 0000000..af31c3f
--- /dev/null
+++ b/godot/scenes/environment/Ladder.gd
@@ -0,0 +1,21 @@
+extends Spatial
+
+onready var top = $Top
+onready var bottom = $Bottom
+
+func _ready():
+	if !OS.is_debug_build():
+		$DebugVisMesh.visible = false
+
+#point at which a player should enter the ladder given their current location
+func get_nearest_point_to_route(point_global: Vector3) -> Vector3:
+	var t : Vector3 = top.global_transform.origin
+	var b : Vector3 = bottom.global_transform.origin
+	return b + clamp(get_climb_scalar(point_global), 0.0, 1.0)*(t-b)
+
+#ladder climb "progress"
+func get_climb_scalar(point_global: Vector3) -> float:
+	var t : Vector3 = top.global_transform.origin
+	var b : Vector3 = bottom.global_transform.origin
+	#(T−B)⋅(P-B) / (T−B)⋅(T−B)
+	return (t-b).dot(point_global-b) / (t-b).dot(t-b)