Download or view ConwaysLife.frink in plain text format
start = now[]
// Generate a random 10x10 grid with "1" being on and "0" being off
instructions = ["1000100110","0001100010","1000111101","1001111110","0000110011","1111000001","0100001110","1011101001","1001011000","1101110111"]
// Create dictionary of starting positions.
rowCounter = 0
display = new dict
for instructionStr = instructions
{
rowCounter = rowCounter + 1
columnCounter = 0
for instruction = charList[instructionStr]
{
columnCounter = columnCounter + 1
arr = [rowCounter,columnCounter]
if instruction == "1"
display@arr = 1
else
display@arr = 0
}
}
// Create toggle dictionary to track changes. It starts off with everything off.
// the keys are [x,y] coordinates and the values are 0 and 1
toggle = new dict
multifor point = [new range[1,10],new range[1,10]]
toggle@point = 0
// Animate the game of life
a = new Animation[3/s]
// Loop through 10 changes to the grid. The starting points will tick down to
// two stable unchanging shapes in 10 steps.
for i = 1 to 12 // 12 steps so animation will pause on final state.
{
// Graphics item for this frame of the animation.
g = new graphics
g.backgroundColor[1,1,1]
// Add in a transparent shape to prevent the image from jiggle to automatic scaling.
g.color[0,0,0,0] // Transparent black
g.fillRectSides[-1, -1, 12, 12] // Set minimum size
g.clipRectSides[-1, -1, 12, 12] // Set maximum size
g.color[0,0,0] // Color back to default black
multifor tval = [new range[1,10],new range[1,10]]
{
[x1,y1] = tval
// This is programmed with a hard edge. Points beyond the border aren't considered.
xmax = min[x1+1,10]
xmin = max[x1-1,1]
ymax = min[y1+1,10]
ymin = max[y1-1,1]
// Range will be 8 surrounding cells or cells up to border.
pointsum = 0
status = 0
// Process each surrounded point
multifor point = [xmin to xmax, ymin to ymax]
{
[x2,y2] = point
if x2 == x1 && y2 == y1
status = display@point
else // Calculate the total of surrounding points
pointsum = pointsum + display@point
}
// Animate if the point is on.
if status == 1
g.fillEllipseCenter[x1,y1,1,1]
toggle@tval = status // This will be overwritten if needed by neighbor check conditions below.
// Check if off point has 3 on point neighbors
if status == 0 && pointsum == 3
toggle@tval = 1
// Check if on point has between 2 and 3 on point neighbors
if status == 1 && (pointsum < 2 || pointsum > 3)
toggle@tval = 0
}
// Add the current frame to the animation
a.add[g]
// Replace the current display with the toggle values.
for [key, val] = toggle
display@key = val
}
// Write the animation file
a.write["ConwaysLife.gif",400,400]
end = now[]
println["Program run time: " + ((end - start)*1.0 -> "seconds")]
Download or view ConwaysLife.frink in plain text format
This is a program written in the programming language Frink.
For more information, view the Frink
Documentation or see More Sample Frink Programs.
Alan Eliasen was born 19979 days, 14 hours, 46 minutes ago.