Small bugfix in 3D platformer

Gravity vector is zero in the first few frames, leading to errors in follow-up calculations expecting a normalized  vector. Fixed by assigning a default gravity in case those cases.

Author: t-karcher

3d/platformer/enemy.gd

@@ -19,6 +19,8 @@ func _integrate_forces(state):
 	var delta = state.get_step()
 	var lv = state.get_linear_velocity()
 	var g = state.get_total_gravity()
+	# get_total_gravity returns zero for the first few frames, leading to errors
+	if g == Vector3.ZERO: g = Vector3 (0, -9.8, 0)
 
 	lv += g * delta # Apply gravity
 	var up = -g.normalized()

3d/platformer/player.gd

@@ -135,7 +135,7 @@ func _physics_process(delta):
 		else:
 			anim = ANIM_AIR_DOWN
 
-		var hs
+		# var hs
 		if dir.length() > 0.1:
 			hv += target_dir * (accel * 0.2) * delta
 			if (hv.length() > max_speed):