75 lines
1.5 KiB
Odin
75 lines
1.5 KiB
Odin
package main
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import "core:fmt"
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import "core:strings"
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import "core:time"
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WIDTH :: 128
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HEIGHT :: 128
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AREA :: WIDTH * HEIGHT
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main :: proc() {
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board : [AREA]bool = ---
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// board[0] = true
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// board[1] = true
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// board[WIDTH] = true
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// for x in 4..<14 {
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// board[x + WIDTH*8] = true
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// }
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fmt.print("\e[2J") // clear screen
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for {
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fmt.print("\e[u") // reset cursor
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print_board(&board)
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update_board(&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(state: ^[AREA]bool) {
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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: c = '█'
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case top && !bot: c = '▀'
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case !top && bot: c = '▄'
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case: 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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fmt.println()
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}
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update_board :: proc(state: ^[AREA]bool) {
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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]{
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count += 1
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}
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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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