Stop the Clock Challenge

Tomoaki Takagi
/
Stop the Clock Challenge

on 2 Nov 2026

game.m

function g = game()
    g.init   = @initState;
    g.update = @updateState;
    g.render = @renderFrame;
end

function state = initState(ax)
    state.mode = 0;
    state.time = 0;
    state.text = text(ax, 400, 300, {'Hit SPACE or', 'click to start'}, ...
        'HorizontalAlignment', 'center', 'FontSize', 100);
end

function state = updateState(state, ~, pressed)
    if ~pressed
        if state.mode == 1
            state.text.String = sprintf('%.2f', toc(state.time));
        end
        return
    end
    
    switch rem(state.mode, 3)
        case 0
            state.mode = 1;
            state.time = tic();
            state.text.String = sprintf('%.2f', 0);
        case 1
            state.mode = 2;
            state.text.String = sprintf('%.2f', toc(state.time));
        case 2
            state.mode = 3;
            state.text.String = {'Hit SPACE or', 'click to start'};
    end
end

function renderFrame(~, ~)
    % nothing to do here, we update the text in updateState
end

Play Game

Preview

Play Game opens this in MATLAB Drive. Click Run this app there to play.