;ENEMY DELETION PROTOTYPE
;OmegaDragnet9

;This has some issues and requires a bit of setup.
;Might be worthwhile to save on roomstates. 

lorom

;Event PLM not included. The PLM that is included only serves to provide a PLM argument
;by which the Room ASM can detect if a certain event has been triggered.
;Otherwise you'd be left with a hardcoded event OR be stuck with only the Room Index (which does work well enough.)


!A7Freespace = $A7FF8A

org $8FFCC0
;Room ASM

;LDA $079D
LDA $1C21
JSL $808233
BCC END
JSL BankA7

END:
RTS



org !A7Freespace  
BankA7:
JSR $A943	;Sets Enemy Properties as dead
RTL

;So what I gather of thise routine in Bank $A7, the reason all the enemies seemingly vanish at once
;is because it is summoned by the Room ASM once a frame and appears to be running down a list of the enemy index.
;I don't believe it's actually deleting them all at one time. 

;----------------------------------------------------


org $84FEC0
;This goes in the room. It's only purpose is to have a PLM argument and store that to a value in RAM
;The Room ASM takes that value in RAM, and determines the event to trigger the deletion of all the room's enemies. 

DW Setup
DW InstList 

Setup:

PHY
LDA $1DC7,y		;PLM variable (event # to set)
AND #$00FF
STA $1C21
PLY
RTS

RTS

InstList:
DW $86B4

;KNOWN BUGS

;If you have a fast door transition you can see enemies for half a second.
;Additionally, if you do not set the enemies to process offscreen, the graphics will remain for about a frame where
;they would normally spawn in game.