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www.mikescher.com/www/data/programs/desc/BefunUtils/03_Examples/09_Game of Life.markdown

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2014-07-16 19:10:02 +02:00
###Conway's Game of Life
A simulation of [Conway's Game of Life](http://en.wikipedia.org/wiki/Conway%27s_Game_of_Life)
```textfunge
program GameOfLife : display[40, 40]
const
char FIELD_UNSET := ' ';
char FIELD_SET := 'O';
char FIELD_PREBORN := 'o';
char FIELD_PREDEAD := 'Q';
begin
Init();
Run();
end
void Init()
var
int x, y;
begin
for (x = 0; x < DISPLAY_WIDTH; x++)
do
for (y = 0; y < DISPLAY_HEIGHT; y++)
do
if (display[x, y] != FIELD_UNSET) then
display[x, y] = FIELD_SET;
else
display[x, y] = FIELD_UNSET;
end
end
end
end
void Run()
var
int i := 0;
begin
for(;;i++) do
Tick();
OUTF "Tick Nr " , i , "\r\n";
end
end
void Tick()
var
int x, y;
int nc;
begin
for (x = 0; x < DISPLAY_WIDTH; x++) do
for (y = 0; y < DISPLAY_HEIGHT; y++) do
nc = GetNeighborCount(x, y);
if (display[x, y] == FIELD_SET) then
if (nc < 2) then // Underpopulation
display[x, y] = FIELD_PREDEAD;
elsif (nc > 3) then // Overcrowding
display[x, y] = FIELD_PREDEAD;
end
else
if (nc == 3) then // It lives !
display[x, y] = FIELD_PREBORN;
end
end
end
end
for (x = 0; x < DISPLAY_WIDTH; x++) do
for (y = 0; y < DISPLAY_HEIGHT; y++) do
if (display[x, y] == FIELD_PREBORN) then
display[x, y] = FIELD_SET;
elsif (display[x, y] == FIELD_PREDEAD) then
display[x, y] = FIELD_UNSET;
end
end
end
end
int GetNeighborCount(int x, int y)
var
int r;
begin
r = 0;
r += (int)(display[x - 1, y - 1] == FIELD_SET || display[x - 1, y - 1] == FIELD_PREDEAD);
r += (int)(display[x + 0, y - 1] == FIELD_SET || display[x + 0, y - 1] == FIELD_PREDEAD);
r += (int)(display[x + 1, y - 1] == FIELD_SET || display[x + 1, y - 1] == FIELD_PREDEAD);
r += (int)(display[x - 1, y + 0] == FIELD_SET || display[x - 1, y + 0] == FIELD_PREDEAD);
r += (int)(display[x + 1, y + 0] == FIELD_SET || display[x + 1, y + 0] == FIELD_PREDEAD);
r += (int)(display[x - 1, y + 1] == FIELD_SET || display[x - 1, y + 1] == FIELD_PREDEAD);
r += (int)(display[x + 0, y + 1] == FIELD_SET || display[x + 0, y + 1] == FIELD_PREDEAD);
r += (int)(display[x + 1, y + 1] == FIELD_SET || display[x + 1, y + 1] == FIELD_PREDEAD);
return r;
end
end
```
> **Note:** This programs needs the options `Safe Boolean Convert` and `Prevent Display Overflow` enabled
> **Note:** *This and other examples are included in the BefunGen download*