Routines
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57383: Handle Rock Fragments
Handler for the object types 81 to 83 (the pieces of a stalactite that has landed). The counter in byte 6 goes up on every call. The type goes up by one on every second call, and when it would go past 83 the piece moves four pixels to the left and is destroyed (see Destroy_Creature). The piece is removed if Sabreman is not in the room.
Input
IX Object record
Handle_Rock_Fragments 57383 CALL StoreEntity Save the state of the piece.
57386 LD A,(36636) Fetch the room x of Sabreman.
57389 CP (IX+2) Jump to Remove_Unseen_Weapon to remove the piece if it is in a different room x.
57392 JP NZ,Remove_Unseen_Weapon
57395 LD A,(36638) Fetch the room y of Sabreman.
57398 CP (IX+4) Jump to Remove_Unseen_Weapon to remove the piece if it is in a different room y.
57401 JP NZ,Remove_Unseen_Weapon
57404 INC (IX+6) Increase the counter.
57407 BIT 0,(IX+6) Jump to Update_Object_Sprite if the counter is odd.
57411 JP NZ,Update_Object_Sprite
57414 LD A,(IX+0) Fetch the type.
57417 INC A Add one.
57418 CP 84 Jump to Handle_Rock_Fragments_Explode if the type is past 83.
57420 JR NC,Handle_Rock_Fragments_Explode
57422 LD (IX+0),A Store the type.
57425 JP Update_Object_Sprite Jump to Update_Object_Sprite.
Handle_Rock_Fragments_Explode 57428 LD A,(IX+1) Fetch the x position.
57431 SUB 4 Subtract four.
57433 LD (IX+1),A Store the x position.
57436 JP Destroy_Creature Destroy the piece.
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