Mar 28, 2021 at 8:38 PM
It technically isn't the player object that switches to a sprite of lying down, but instead, in these cutscenes, it knows roughly where the player will be, and so has an invisible entity ready in that position, and then when the time comes in the cutscene, it uses the "<HMC" (hide my character) command, and then changes that invisible entity into an NPC of type Quote, and then animates it to lie down. Open up room 060, "Teleporter" in CE or BL. Notice that right on top of the teleporter, there's another NPC with event #260, which is currently an empty entity. In the cutscene when the Droll jumps on top of Quote, here's the code that executes:How do you change the player sprite to the laying down sprite?
Something similar is done in the cutscene for Balrog pouncing on you in the Sand Zone, although that one is a little bit more elaborate.