69 lines
1.4 KiB
Odin
69 lines
1.4 KiB
Odin
package main
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import "core:fmt"
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import "core:math/rand"
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import "core:strings"
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import "core:time"
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WIDTH :: 64
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HEIGHT :: 64
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AREA :: WIDTH * HEIGHT
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state: [AREA]bool
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main :: proc() {
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fmt.print("\e[2J") // clear screen
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for i in 0 ..< AREA do state[i] = bool(rand.uint32() & 1)
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for {
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print_board()
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update_board()
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time.sleep(time.Millisecond * 50)
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}
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}
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print_board :: proc() {
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fmt.print("\e[u") // reset cursor
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for y := 0; y < HEIGHT; y += 2 {
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line := strings.builder_make()
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defer strings.builder_destroy(&line)
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for x in 0 ..< WIDTH {
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top := state[x + y * WIDTH]
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bot := state[x + (y + 1) * WIDTH]
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c: rune
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switch {
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case top && bot:
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c = '█'
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case top && !bot:
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c = '▀'
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case !top && bot:
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c = '▄'
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case:
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c = ' '
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}
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strings.write_rune(&line, c)
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}
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fmt.println(strings.to_string(line))
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}
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}
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update_board :: proc() {
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new_state: [AREA]bool = ---
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for x in 0 ..< WIDTH {
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for y in 0 ..< HEIGHT {
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count := 0
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for dx in -1 ..= 1 {
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px := (x + dx + WIDTH) % WIDTH
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for dy in -1 ..= 1 {
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py := (y + dy + HEIGHT) % HEIGHT
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if state[px + py * WIDTH] do count += 1
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}
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}
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cell := state[x + y * WIDTH]
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new_cell := (count == 3 && !cell) || (cell && count < 5 && count > 2)
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new_state[x + y * WIDTH] = new_cell
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}
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}
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for i in 0 ..< AREA {
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state[i] = new_state[i]
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}
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}
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