river-raid: Routine at 6E9C

6E9C: Create explosion fragment at coordinates

Called when an enemy is destroyed or the player collides. Sets up explosion state and adds an explosion entry to the explosions set at exploding_fragments.

Sets CONTROLS_BIT_EXPLODING to trigger explosion sound
Clears CONTROLS_BIT_FIRE_SOUND to stop the fire sound during explosion
Resets explosion_counter (explosion counter) to EXPLOSION_SOUND_TICKS
Falls through to add_object_to_set to add explosion to set

Input
BC	Fragment coordinates: B=Y offset, C=X position
D	Initial explosion frame index (0 = start at frame 1)

spawn_explosion_fragment

6E9C

LD HL,$6BB0

Set CONTROLS_BIT_EXPLODING in state_controls.

6E9F

SET 5,(HL)

6EA1

RES 0,(HL)

Clear CONTROLS_BIT_FIRE_SOUND.

6EA3

LD A,$18

Reset explosion counter.

6EA5

LD ($6C7A),A

6EA8

LD HL,$5F2E

Point HL to explosions set at exploding_fragments, fall through to add_object_to_set.