Routines
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46347: Graphic layout routine: (245) Decrease timer value, and if zero, reset and write random graphic index from list into next instruction
Decrease timer value (1st parameter). If now zero, then reset timer to value in 2nd parameter, then load one of the n (3rd parameter) following values chosen at random into the graphic index field of the next instruction.
Used by the routine at 46218.
Input
IX Address of first parameter in current graphic layout data instruction
Output
B Do-not-recalculate-display-buffer-address flag (0)
IX Address of next graphic layout data instruction to process
46347 LD B,0 Prepare to recalculate display buffer address
46349 DEC (IX+0) Decrease timer value
46352 JR NZ,46370 If timer is not zero, then advance IX to start of next instruction and process
46354 CALL 46385 Reset timer to maximum, advance IX to start of next instruction and set value here (graphic index) to random value from sequence of data following previous instruction
46357 LD (IX+0),E
46360 JP 46003 Read / process data at address in IX
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