Routines
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52920: 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 52920 LD HL,52235 Increment the script command counter.
52923 INC (HL)
52924 CALL GetCurrentScriptState Get the current script state (command byte and position).
52927 CALL AdvanceScriptPointerByCommandSize Process the command byte and advance the script pointer.
52930 BIT 4,(IX+0) Jump to ProcessScriptCommandWithCounter_UpdatePosition if bit 4 is not set (no pointer to load).
52934 JR Z,ProcessScriptCommandWithCounter_UpdatePosition
52936 LD E,(HL) Load the script pointer from the command data (two bytes into DE).
52937 INC HL
52938 LD D,(HL)
52939 EX DE,HL
ProcessScriptCommandWithCounter_UpdatePosition 52940 LD (IY+1),L Update the character's script position pointer (IY+1/2).
52943 LD (IY+2),H
52946 PUSH IX Calculate how many bytes have been processed in the script (HL-IX).
52948 POP DE
52949 AND A
52950 SBC HL,DE
52952 JP Z,TerminateCharacterScript Jump to TerminateCharacterScript if the counter limit has been reached (HL equals A).
52955 JP ScriptInterpreter_0 Jump to ScriptInterpreter_0 (continue processing the next script command).
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