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8792: Spawn Special Enemy
Used by the routines at UpdateEnemySpawning and UpdateEnemies.
Starts one of the special enemies, but only in the middle zones of the planet (zones 03 to 09).
SpawnSpecialEnemy 8792 LD A,($CE58) Fetch the map zone from CE58.
8795 CP $0A Return if it is 0A or higher...
8797 RET NC
8798 CP $03 ...or lower than 03.
879A RET C
879B LD A,$02 Look for a free slot among two slots.
879D LD IX,$9A1C
87A1 CALL FindFreeSlot Search for a free enemy slot.
87A4 RET NZ Return if there is not one.
87A5 LD A,$01 Select the second type of enemy.
87A7 LD ($89D2),A
87AA LD B,$03 With 03 in B, jump to SpawnEnemy_ChooseSide to start the enemy.
87AC JP SpawnEnemy_ChooseSide
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