Routines
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CEB8: Process Script Command With Counter
Used by the routines at HandleCommandType_0E_0C_0B_0A, HandlePopStack, HandleDisplayRoomDescription, ClearRoomDisplayParameters and HandleSimpleAction.
Processes a character script command, tracking how many commands have been executed. If the counter limit is reached, the script is terminated.
Input
A Counter value (maximum number of commands to process)
ProcessScriptCommandWithCounter CEB8 LD HL,$CC0B Increment the script command counter.
CEBB INC (HL)
CEBC CALL GetCurrentScriptState Get the current script state (command byte and position).
CEBF CALL AdvanceScriptPointerByCommandSize Process the command byte and advance the script pointer.
CEC2 BIT 4,(IX+$00) Jump to ProcessScriptCommandWithCounter_UpdatePosition if bit 4 is not set (no pointer to load).
CEC6 JR Z,ProcessScriptCommandWithCounter_UpdatePosition
CEC8 LD E,(HL) Load the script pointer from the command data (two bytes into DE).
CEC9 INC HL
CECA LD D,(HL)
CECB EX DE,HL
ProcessScriptCommandWithCounter_UpdatePosition CECC LD (IY+$01),L Update the character's script position pointer (IY+01/02).
CECF LD (IY+$02),H
CED2 PUSH IX Calculate how many bytes have been processed in the script (HL-IX).
CED4 POP DE
CED5 AND A
CED6 SBC HL,DE
CED8 JP Z,TerminateCharacterScript Jump to TerminateCharacterScript if the counter limit has been reached (HL equals A).
CEDB JP ScriptInterpreter_0 Jump to ScriptInterpreter_0 (continue processing the next script command).
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