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added cx16/life.p8 example (Conway's game of life)
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Original file line number | Diff line number | Diff line change |
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; conway's game of life. | ||
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%import math | ||
%import textio | ||
%import emudbg | ||
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main { | ||
const ubyte WIDTH = 80 | ||
const ubyte HEIGHT = 60-4 | ||
const uword STRIDE = $0002+WIDTH | ||
uword world1 = memory("world1", (WIDTH+2)*(HEIGHT+2), 0) | ||
uword world2 = memory("world2", (WIDTH+2)*(HEIGHT+2), 0) | ||
uword @requirezp active_world = world1 | ||
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sub start() { | ||
; cx16.set_screen_mode(3) | ||
txt.cls() | ||
txt.color(8) | ||
txt.plot(50,0) | ||
txt.print("prog8 - conway's game of life") | ||
sys.memset(world1, (WIDTH+2)*(HEIGHT+2), 0) | ||
sys.memset(world2, (WIDTH+2)*(HEIGHT+2), 0) | ||
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set_start_gen() | ||
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ubyte gen_add | ||
uword gen | ||
repeat { | ||
if gen_add==0 | ||
cbm.SETTIM(0,0,0) | ||
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next_gen() | ||
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gen++ | ||
txt.home() | ||
txt.color(5) | ||
txt.print(" gen ") | ||
txt.print_uw(gen) | ||
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gen_add++ | ||
if gen_add==10 { | ||
txt.print(" jiffies/10 gens: ") | ||
txt.print_uw(cbm.RDTIM16()) | ||
txt.print(" ") | ||
gen_add=0 | ||
} | ||
} | ||
} | ||
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sub set_start_gen() { | ||
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; some way to set a custom start generation: | ||
; str start_gen = " " + | ||
; " " + | ||
; " " + | ||
; " ** " + | ||
; " * * " + | ||
; " * " + | ||
; " * * " + | ||
; " ****** " + | ||
; " " + | ||
; " " + | ||
; " " + | ||
; " " + | ||
; " " + | ||
; " " + | ||
; " " + | ||
; " " | ||
; | ||
; for y in 0 to 15 { | ||
; for x in 0 to 15 { | ||
; if start_gen[y*16 + x]=='*' | ||
; active_world[offset + x] = 1 | ||
; } | ||
; offset += STRIDE | ||
; } | ||
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; randomize whole world | ||
uword offset = STRIDE+1 | ||
ubyte x | ||
ubyte y | ||
for y in 0 to HEIGHT-1 { | ||
for x in 0 to WIDTH-1 { | ||
if math.rnd() & 1 == 1 | ||
active_world[offset+x] = 1 | ||
} | ||
offset += STRIDE | ||
} | ||
} | ||
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sub next_gen() { | ||
uword @requirezp new_world | ||
if active_world == world1 | ||
new_world = world2 | ||
else | ||
new_world = world1 | ||
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const ubyte DXOFFSET = 0 | ||
const ubyte DYOFFSET = 2 | ||
uword voffset = STRIDE+1-DXOFFSET | ||
uword offset | ||
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ubyte x | ||
ubyte y | ||
for y in DYOFFSET to HEIGHT+DYOFFSET-1 { | ||
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cx16.vaddr_autoincr(1, $b000 + 256*y, 0, 2) ; allows us to use simple Vera data byte assigns later instead of setchr() calls | ||
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for x in DXOFFSET to WIDTH+DXOFFSET-1 { | ||
offset = voffset + x | ||
ubyte cell = active_world[offset] | ||
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; count the neighbors | ||
uword @requirezp ptr = active_world + offset - STRIDE - 1 | ||
ubyte neighbors = @(ptr) + @(ptr+1) + @(ptr+2) + | ||
@(ptr+STRIDE) + cell + @(ptr+STRIDE+2) + | ||
@(ptr+STRIDE*2) + @(ptr+STRIDE*2+1) + @(ptr+STRIDE*2+2) | ||
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; apply game of life rules | ||
if neighbors==3 | ||
cell=1 | ||
else if neighbors!=4 | ||
cell=0 | ||
new_world[offset] = cell | ||
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; draw new cell | ||
if cell==0 | ||
; txt.setchr(x, y, sc:' ') | ||
cx16.VERA_DATA0 = sc:' ' | ||
else | ||
; txt.setchr(x, y, sc:'●') | ||
cx16.VERA_DATA0 = sc:'●' | ||
} | ||
voffset += STRIDE | ||
} | ||
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active_world = new_world | ||
} | ||
} |
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