Gyruss: Routine at 9A49

9A49: Collision of ship with enemy

Used by the routine at ship_hit_sprite.

Input
A	enemy type
IX	Sprite data of other sprite
IY	Sprite data of ship

ship_hit_enemy

9A49

CP $0E

If < $0E

9A4B

JR C,ship_hit_enemy_1

Then set died flag and return

9A4D

CP $12

If >= $12

9A4F

JR NC,ship_hit_enemy_1

Then set died flag and return

9A51

LD HL,active_enemies

Decrement active enemies

9A54

DEC (HL)

...

9A55

CALL deallocate_sprite_from_map

Deallocate from map

9A58

LD (IX+$00),$04

Set sprite type to destroyed

9A5C

LD (IX+$03),$0F

Set animation counter

9A60

LD (IX+$04),$FF

Set loaded patten index to none

9A64

LD (IX+$06),$00

9A68

RST $30

Load sprite pattern

This entry point is used by the routine at ship_hit_mine.

ship_hit_enemy_0

9A69

LD HL,total_enemies

Decrement total enemies

9A6C

DEC (HL)

...

This entry point is used by the routine at ship_hit_sprite.

ship_hit_enemy_1

9A6D

LD HL,status_flags

Set died flag

9A70

SET 2,(HL)

...

9A72

JP handle_collisions_1

Jump back into collisions loop