oh i forgot to add! a neat trick to making multiple levels on the same stage is using two layers, then one is a looong keyframe (like ranging 10..20) which keeps the stage itself- then you keep many keyframes on a layer just below for each level. so clearing a level -> oh you’re on the next keyframe, hey look the layer dedicated to the stage remains the same so i don’t need to fiddle with backgrounds or buttons just copying everything i want from the previous keyframe and re-arrange it in this keyframe, like what is a next level anyway? i just place my (enemies, items, …) and i don’t need to be clever about how to move to the next level. i just click the enemy or item or door that i want to end that level by destroying/walking_over and in that doodle’s script i write
if (condition) { gotoNextFrame()’ }
anyways i can yap on about this for a long while. hope this helps though!!!