Allow pressing "B" to begin running automata

[life-pd.git] / source / main.lua

local pd <const> = playdate
local gfx <const> = playdate.graphics

local WIDTH <const> = 12
local HEIGHT <const> = 7

local rects = {}
for i=1, WIDTH do
    rects[i] = {}
      for j=1, HEIGHT do
          r = pd.geometry.rect.new(32 * (i-1), 32 * (j-1), 32, 32)
          rects[i][j] = { rect = r, live = false }
      end
end

local x = 1
local y = 1

local running = false


function playdate.update()
    if not running then
        -- automata state setup
        for i,row in ipairs(rects) do
            for j,r in ipairs(row) do
                if r.live then
                    gfx.setColor(gfx.kColorBlack)
                else
                    gfx.setColor(gfx.kColorWhite)
                end

                gfx.fillRect(r.rect)
                gfx.setColor(gfx.kColorBlack)
                gfx.drawRect(r.rect)

            end
        end

        if playdate.buttonJustPressed("right") then
            x = math.min(WIDTH, x + 1)
        elseif playdate.buttonJustPressed("left") then
            x = math.max(1, x - 1)
        elseif playdate.buttonJustPressed("up") then
            y = math.max(1, y - 1)
        elseif playdate.buttonJustPressed("down") then
            y = math.min(HEIGHT, y + 1)
        elseif playdate.buttonJustPressed("a") then
            rects[x][y].live = not rects[x][y].live
        elseif playdate.buttonJustPressed("b") then
            running = true
        end
    else
        -- running
    end
end