allow fullscreen button, also correct goober x-axis movement to 0.5 units exactly

Author: HarmonyHoney

src/game/game.gd

@@ -37,6 +37,13 @@ func _ready():
 	audio.play()
 	audio.finished.connect(audio.play)
 
+func _input(event):
+	if event.is_action_pressed("ui_fullscreen"):
+		var win_full = DisplayServer.window_get_mode() == DisplayServer.WINDOW_MODE_FULLSCREEN
+		DisplayServer.mouse_set_mode(DisplayServer.MOUSE_MODE_VISIBLE if win_full else DisplayServer.MOUSE_MODE_HIDDEN)
+		DisplayServer.window_set_mode(DisplayServer.WINDOW_MODE_WINDOWED if win_full else DisplayServer.WINDOW_MODE_FULLSCREEN)
+
+
 func _process(delta):
 	map_clock.x += delta
 	# title screen is the first level, and "game complete" screen is the last level:

src/game/goober.gd

@@ -6,7 +6,7 @@ class_name Goober
 
 var game
 var spd := 30.0
-var vel := Vector2(spd, 1)
+var vel := Vector2(spd, 0)
 var flip_clock := 1.0
 
 func _enter_tree():
@@ -27,7 +27,9 @@ func _physics_process(delta):
 	if !raycast.is_colliding():
 		flip()
 
-	velocity = vel
+	
+	move_and_collide(Vector2(0, 1))
+	velocity = Vector2(vel.x, 0)
 	move_and_slide()
 	if velocity.x == 0:
 		flip()