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import std.stdio; | |
import core.stdc.limits; | |
import std.math; | |
uint WORLD; | |
uint LASTWORLD; | |
uint NEWWORLD; | |
uint ROW_L; | |
int offset( uint x, uint y ) { | |
uint offset_bit = (y*ROW_L)+x; | |
uint numeric_val = pow(2,offset_bit); | |
return numeric_val; | |
} | |
int pokeCell( int x, int y ) { | |
if ( | |
x >= 0 && | |
y >= 0 && | |
x < ROW_L && | |
y < ROW_L | |
) { | |
int bit = offset(x, y); | |
return ( WORLD & bit ) != 0; | |
} else { | |
return -1; | |
} | |
} | |
void setCell(uint x, uint y) { | |
uint bit = offset(x,y); | |
WORLD += bit; | |
} | |
void unsetCell(uint x, uint y) { | |
uint bit = offset(x,y); | |
WORLD -= bit; | |
} | |
uint getX( uint offset ) { | |
return ( offset % ROW_L ); | |
} | |
uint getY( uint offset ) { | |
return ( offset / ROW_L ); | |
} | |
uint getDelta() { | |
uint ret = (WORLD & LASTWORLD); | |
return (WORLD-ret); | |
} | |
uint getNextOffset( int MIDWORLD ) { | |
uint oldmidworld = MIDWORLD; | |
MIDWORLD = ((MIDWORLD) & (MIDWORLD-1)); | |
if ( MIDWORLD == 0 ) { | |
if ( oldmidworld != 0 ) | |
return oldmidworld; | |
else | |
return 0; | |
} else { | |
return oldmidworld^MIDWORLD; | |
} | |
} | |
void processNode( int x, int y ) { | |
// std::cout << x << ", " << y << std::endl; | |
int nCount = 0; | |
int bitflag = offset(x,y); | |
if ( pokeCell(x,y-1) == 1 ) | |
nCount++; | |
if ( pokeCell(x-1,y-1) == 1 ) | |
nCount++; | |
if ( pokeCell(x-1,y) == 1 ) | |
nCount++; | |
if ( pokeCell(x+1,y-1) == 1 ) | |
nCount++; | |
if ( pokeCell(x-1,y+1) == 1 ) | |
nCount++; | |
if ( pokeCell(x+1,y) == 1 ) | |
nCount++; | |
if ( pokeCell(x+1,y+1) == 1 ) | |
nCount++; | |
if ( pokeCell(x,y+1) == 1 ) | |
nCount++; | |
if ( nCount < 2 ) | |
if ( ( NEWWORLD & bitflag ) > 0 ) | |
NEWWORLD -= bitflag; | |
if ( nCount > 3 ) | |
if ( ( NEWWORLD & bitflag ) > 0 ) | |
NEWWORLD -= bitflag; | |
if ( nCount == 3 ) | |
if ( ( NEWWORLD & bitflag ) == 0 ) | |
NEWWORLD += bitflag; | |
} | |
void processNode( int x, int y, int flag ) { | |
processNode(x,y); | |
if ( flag ) { | |
processNode(x,y-1); | |
processNode(x-1,y-1); | |
processNode(x-1,y); | |
processNode(x+1,y-1); | |
processNode(x-1,y+1); | |
processNode(x+1,y); | |
processNode(x+1,y+1); | |
processNode(x,y+1); | |
} | |
} | |
void renderWorld() { | |
for ( int i = 0; i < ROW_L; ++i ) { | |
for ( int n = 0; n < ROW_L; ++n ) { | |
if ( pokeCell(i,n) ) { | |
write(" O"); | |
} else { | |
write(" X"); | |
} | |
} | |
writeln(); | |
} | |
writeln(); | |
} | |
void main( char[][] args ) { | |
WORLD = 0; | |
LASTWORLD = 0; | |
ROW_L = 7; | |
// std::cout << "Max Chunk XY: " << ROW_L << std::endl; | |
setCell(1,1); | |
setCell(1,2); | |
setCell(1,3); | |
int turn = 0; | |
int CAP = 100; | |
while ( WORLD != LASTWORLD | |
&& turn < CAP | |
) { | |
turn++; | |
renderWorld(); | |
writeln(WORLD); | |
NEWWORLD = WORLD; | |
uint delt = getDelta(); | |
uint next = getNextOffset(delt); | |
delt -= next; | |
while ( next != 0 ) { | |
uint x = getX(cast(uint)log2(next)); | |
uint y = getY(cast(uint)log2(next)); | |
processNode(x,y,1); | |
next = getNextOffset(delt); | |
delt -= next; | |
} | |
LASTWORLD = WORLD; | |
WORLD = NEWWORLD; | |
} | |
renderWorld(); | |
} |
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