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54764: Check entity at IX for collision with another entity at next depth level out of screen whose interaction-(11,6) flag is set
Used by the routines at 37639 and 52315.
Input
IX Address of complex state data for an entity
Output
F Carry flag set if no entity found, reset otherwise
A Class of entity, if found, otherwise 255
IY Address of complex state data for colliding entity
54764 LD C,1 Set depth offset to 1 (i.e. check entities at next depth level out of screen)
54766 JR 54770 Jump to collision detection routine
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