Conway's Game Of Life

[richard]

i had a bit of a "google" for stagnant life pattern detection . the answer was obvious CRC
i resurrected my old code , added crc16 stored the last 8 crc's in a ring buffer. i then go on to check every new generation's
crc for existence in the buffer, more than two counts and i call it a repeat and begin a new pattern
works like a charm.

[HenrikOlsson]

The array transform routine, as posted above executes in 4.66ms on my test hardware (18F46K42 @64MHz).
It's a small improvement but I managed to reduce that to 4.28ms by changing it into two FOR/NEXT loops, one for odd, one for even rows.

    FOR Col = 0 To 30 Step 2
        InPtr = (TempW + Col)
        led[InPtr] = lednew[InPtr]
        OutPtr = InPtr
       
        IF led[InPtr] > 0 THEN
           NeoLed(OutPtr) = Led[InPtr]	
           alive = alive + 1
           dead = dead + InPtr
        ELSE
            NeoLED(OutPtr) = 0
        ENDIF
    NEXT
    
    FOR Col = 1 To 31 Step 2    ' Odd rows
        InPtr = (TempW + Col)
        led[InPtr] = lednew[InPtr]
        OutPtr = (TempW) + (31-Col)   'Reversed order
        
        IF led[InPtr] > 0 THEN
           NeoLed(OutPtr) = Led[InPtr]	
           alive = alive + 1
           dead = dead + InPtr
        ELSE
           NeoLED(OutPtr) = 0
        ENDIF
    NEXT

I must point out though that I don't have the arrays populated with anything so their values are always zero which obviously will have an effect.

[retepsnikrep]

Could I have a look at your Life CRC16 code please Richard?