Routines
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BFBF: Script Routine: (29) Task-two entity action
Lift the task-two entity when its matching game-event bit is set.
Input
IX Address of complex state data for an entity
ScriptRoutine_TaskTwoRiseOnEvent BFBF LD A,($72B3) Load A with the game event flags (GameEventFlags).
BFC2 BIT 1,A Is bit 01 of game event flags set? If not, jump to ScriptRoutine_TaskTwoRiseOnEvent_RunStartScript.
BFC4 JR Z,ScriptRoutine_TaskTwoRiseOnEvent_RunStartScript
BFC6 LD A,(IX+$05) Load A with the current entity's y-coordinate.
BFC9 INC A Advance the current entity's y-coordinate by one.
BFCA CP $27 Is the current entity's y-coordinate equal to 27? If so, jump to Update_TaskTwo_ClearTrapFlags.
BFCC JP Z,Update_TaskTwo_ClearTrapFlags
BFCF CP $1B Is the current entity's y-coordinate equal to 1B? If not, jump to ScriptRoutine_TaskTwoRiseOnEvent_IncY.
BFD1 JR NZ,ScriptRoutine_TaskTwoRiseOnEvent_IncY
BFD3 LD A,($72B3) Load A with the game event flags (GameEventFlags).
BFD6 SET 4,A Set bit 04 of game event flags.
BFD8 LD ($72B3),A Set the game event flags (GameEventFlags).
Keep lowering the rising helper one row, then continue the script.
ScriptRoutine_TaskTwoRiseOnEvent_IncY BFDB INC (IX+$05) Move this entity one character down.
BFDE INC (IX+$06)
BFE1 JP AdvanceScriptInstruction Jump to AdvanceScriptInstruction to run the next script instruction.
Trap closed: restart the rise routine from script BirdScript_RiseLoop.
ScriptRoutine_TaskTwoRiseOnEvent_RunStartScript BFE4 LD HL,$BE79 Point HL at bird script data BirdScript_RiseLoop.
BFE7 JP ScriptInstruction Jump to ScriptInstruction to execute the script instruction at HL.
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