Make sure to check action x y before use

Fixes #84

Author: britzl

.gitignore

@@ -8,3 +8,4 @@ build
 .cproject
 builtins
 .internal
+/.editor_settings

gooey/internal/core.lua

@@ -7,6 +7,7 @@ local EMPTY = hash("")
 local long_press_start = 0
 
 local function handle_action(component, action_id, action)
+	if not action.x or not action.y then return end
 	action.id = action.id or -1
 	component.long_pressed_time = component.long_pressed_time or 1.5
 	if not component.touch_id or component.touch_id == action.id then

gooey/internal/list.lua

@@ -121,6 +121,7 @@ end
 
 
 local function handle_input(list, action_id, action, click_fn)
+	if not action.x or not action.y then return end
 	local over_stencil = gui.pick_node(list.stencil, action.x, action.y)
 	list.over = over_stencil
 

gooey/internal/scrollbar.lua

@@ -62,7 +62,7 @@ function M.vertical(handle_id, bounds_id, action_id, action, fn, refresh_fn)
 	scrollbar.bounds_size = bounds_size
 	scrollbar.handle_size = handle_size
 
-	if action then
+	if action and action.x and action.y then
 		local action_pos = vmath.vector3(action.x, action.y, 0)
 
 		core.clickable(scrollbar, action_id, action)
@@ -104,7 +104,7 @@ function M.horizontal(handle_id, bounds_id, action_id, action, fn, refresh_fn)
 	scrollbar.bounds_size = bounds_size
 	scrollbar.handle_size = handle_size
 
-	if action then
+	if action and action.x and action.y then
 		local action_pos = vmath.vector3(action.x, action.y, 0)
 
 		core.clickable(scrollbar, action_id, action)