Routines
Prev: 9AB8 Up: Map Next: 9AE9
9ABC: Spawn Flame
Used by the routine at UpdateCounters.
Called once every time all of the actors have been processed, after SpawnNastie. If the start-of-turn delay is over, the player is alive and the actor record at ImmortalData_SpareFlame is empty then a counter (FlameSpawnDelay) is counted down; when it reaches zero a flame (sprite ID 34) is started at a position chosen by PlaceFlame, unless that position is unsuitable.
Return unless the player is alive (the sprite ID of the player's actor is in the range 10-2F).
SpawnFlame 9ABC LD A,($9702) Fetch the sprite ID of the player's actor from ImmortalData.
9ABF SUB $10 Subtract 10 (the first Sabreman sprite ID).
9AC1 CP $20 Return if the player is not alive.
9AC3 RET NC
Return if the start-of-turn delay is still running.
9AC4 LD A,($96B5) Return if the start-of-turn delay in GameDelayTimer is not zero.
9AC7 AND A
9AC8 RET NZ
Return if the record is already in use.
9AC9 LD DE,$9762 Point DE at the flame's actor record at ImmortalData_SpareFlame.
9ACC LD A,(DE) Fetch the sprite ID of the flame's actor.
9ACD AND A Return if the flame is already in use.
9ACE RET NZ
Count down the delay before the next flame appears.
9ACF LD HL,$96B4 Point HL at the flame spawn delay at FlameSpawnDelay.
9AD2 LD A,(HL) Fetch the flame spawn delay.
9AD3 AND A Jump to SpawnFlame_Start if the flame spawn delay has run out.
9AD4 JR Z,SpawnFlame_Start
9AD6 DEC (HL) Decrease the flame spawn delay by one.
9AD7 RET NZ Return if the flame spawn delay is not zero yet.
The delay has run out so try to start a flame.
SpawnFlame_Start 9AD8 PUSH DE Point IX at the flame's actor record (using the stack).
9AD9 POP IX
9ADB CALL PlaceFlame Choose a position for the flame.
9ADE RET C Return if the position is unsuitable.
9ADF LD (IX+$00),$34 Set the sprite ID of the actor to 34 (flame).
9AE3 LD (IX+$05),$46 Set the colour of the flame to INK:YELLOW, PAPER:BLACK (BRIGHT).
9AE7 JR StartActor_Reset Jump to StartActor_Reset to start the flame.
Prev: 9AB8 Up: Map Next: 9AE9