mirror of
https://github.com/AquariaOSE/Aquaria.git
synced 2024-12-27 07:06:00 +00:00
111 lines
2.6 KiB
Lua
111 lines
2.6 KiB
Lua
-- life.lua
|
|
-- original by Dave Bollinger <DBollinger@compuserve.com> posted to lua-l
|
|
-- modified to use ANSI terminal escape sequences
|
|
-- modified to use for instead of while
|
|
|
|
local write=io.write
|
|
|
|
ALIVE="¥" DEAD="þ"
|
|
ALIVE="O" DEAD="-"
|
|
|
|
function delay() -- NOTE: SYSTEM-DEPENDENT, adjust as necessary
|
|
for i=1,10000 do end
|
|
-- local i=os.clock()+1 while(os.clock()<i) do end
|
|
end
|
|
|
|
function ARRAY2D(w,h)
|
|
local t = {w=w,h=h}
|
|
for y=1,h do
|
|
t[y] = {}
|
|
for x=1,w do
|
|
t[y][x]=0
|
|
end
|
|
end
|
|
return t
|
|
end
|
|
|
|
_CELLS = {}
|
|
|
|
-- give birth to a "shape" within the cell array
|
|
function _CELLS:spawn(shape,left,top)
|
|
for y=0,shape.h-1 do
|
|
for x=0,shape.w-1 do
|
|
self[top+y][left+x] = shape[y*shape.w+x+1]
|
|
end
|
|
end
|
|
end
|
|
|
|
-- run the CA and produce the next generation
|
|
function _CELLS:evolve(next)
|
|
local ym1,y,yp1,yi=self.h-1,self.h,1,self.h
|
|
while yi > 0 do
|
|
local xm1,x,xp1,xi=self.w-1,self.w,1,self.w
|
|
while xi > 0 do
|
|
local sum = self[ym1][xm1] + self[ym1][x] + self[ym1][xp1] +
|
|
self[y][xm1] + self[y][xp1] +
|
|
self[yp1][xm1] + self[yp1][x] + self[yp1][xp1]
|
|
next[y][x] = ((sum==2) and self[y][x]) or ((sum==3) and 1) or 0
|
|
xm1,x,xp1,xi = x,xp1,xp1+1,xi-1
|
|
end
|
|
ym1,y,yp1,yi = y,yp1,yp1+1,yi-1
|
|
end
|
|
end
|
|
|
|
-- output the array to screen
|
|
function _CELLS:draw()
|
|
local out="" -- accumulate to reduce flicker
|
|
for y=1,self.h do
|
|
for x=1,self.w do
|
|
out=out..(((self[y][x]>0) and ALIVE) or DEAD)
|
|
end
|
|
out=out.."\n"
|
|
end
|
|
write(out)
|
|
end
|
|
|
|
-- constructor
|
|
function CELLS(w,h)
|
|
local c = ARRAY2D(w,h)
|
|
c.spawn = _CELLS.spawn
|
|
c.evolve = _CELLS.evolve
|
|
c.draw = _CELLS.draw
|
|
return c
|
|
end
|
|
|
|
--
|
|
-- shapes suitable for use with spawn() above
|
|
--
|
|
HEART = { 1,0,1,1,0,1,1,1,1; w=3,h=3 }
|
|
GLIDER = { 0,0,1,1,0,1,0,1,1; w=3,h=3 }
|
|
EXPLODE = { 0,1,0,1,1,1,1,0,1,0,1,0; w=3,h=4 }
|
|
FISH = { 0,1,1,1,1,1,0,0,0,1,0,0,0,0,1,1,0,0,1,0; w=5,h=4 }
|
|
BUTTERFLY = { 1,0,0,0,1,0,1,1,1,0,1,0,0,0,1,1,0,1,0,1,1,0,0,0,1; w=5,h=5 }
|
|
|
|
-- the main routine
|
|
function LIFE(w,h)
|
|
-- create two arrays
|
|
local thisgen = CELLS(w,h)
|
|
local nextgen = CELLS(w,h)
|
|
|
|
-- create some life
|
|
-- about 1000 generations of fun, then a glider steady-state
|
|
thisgen:spawn(GLIDER,5,4)
|
|
thisgen:spawn(EXPLODE,25,10)
|
|
thisgen:spawn(FISH,4,12)
|
|
|
|
-- run until break
|
|
local gen=1
|
|
write("\027[2J") -- ANSI clear screen
|
|
while 1 do
|
|
thisgen:evolve(nextgen)
|
|
thisgen,nextgen = nextgen,thisgen
|
|
write("\027[H") -- ANSI home cursor
|
|
thisgen:draw()
|
|
write("Life - generation ",gen,"\n")
|
|
gen=gen+1
|
|
if gen>2000 then break end
|
|
--delay() -- no delay
|
|
end
|
|
end
|
|
|
|
LIFE(40,20)
|