HUE SENSE

ziqi
/
HUE SENSE
on 5 Nov 2026
4
37
8
0
5440
game.m
function g = game()
% HUE SENSE: one-button color difference game for the Mini Hack.
g.init = @initGame;
g.update = @updateGame;
g.render = @renderGame;
end

function s = initGame(ax)
ax.XLim = [0 800]; ax.YLim = [0 600]; ax.YDir = 'reverse';
ax.Color = [0.97 0.94 0.91];
s.ax = ax; s.level = 1; s.score = 0; s.t = 0; s.cursorT = 0;
s.mode = 0; s.message = 'PRESS TO START';
s.palette = [219 219 255;254 207 153;255 164 48;153 153 153; ...
    204 204 204;201 153 203;230 204 231]/255;
rectangle(ax,'Position',[0 0 800 600],'FaceColor',ax.Color, ...
    'EdgeColor','none','HitTest','off','PickableParts','none');
rectangle(ax,'Position',[28 25 744 550],'Curvature',0.03, ...
    'FaceColor',[1 0.985 0.96],'EdgeColor',[0.87 0.81 0.80], ...
    'LineWidth',1.5,'HitTest','off','PickableParts','none');
text(ax,65,75,'HUE SENSE','Color',[0.34 0.31 0.38],'FontSize',27, ...
    'FontWeight','bold','FontName','Arial','HitTest','off');
text(ax,65,105,'ONE-BUTTON COLOR CHALLENGE','Color',[0.42 0.65 0.58], ...
    'FontSize',11,'FontWeight','bold','FontName','Arial','HitTest','off');
s.levelText = text(ax,735,75,'LEVEL 01','Color',[0.77 0.55 0.31], ...
    'FontSize',17,'FontWeight','bold','FontName','Arial', ...
    'HorizontalAlignment','right','HitTest','off');
s.gridText = text(ax,735,105,'2 x 2 GRID','Color',[0.57 0.53 0.59], ...
    'FontSize',11,'FontName','Arial','HorizontalAlignment','right','HitTest','off');
s.msg = text(ax,400,530,s.message,'Color',[0.77 0.55 0.31], ...
    'FontSize',17,'FontWeight','bold','FontName','Arial', ...
    'HorizontalAlignment','center','HitTest','off');
text(ax,400,558,'Press when the moving outline reaches the different tile', ...
    'Color',[0.57 0.53 0.59],'FontSize',11,'FontName','Arial', ...
    'HorizontalAlignment','center','HitTest','off');
s.board = [80 145 640 350]; s.tiles = gobjects(10000,1);
s.tileCount = 0; s.cursor = gobjects(0);
s = makeBoard(s);
end

function s = makeBoard(s)
n = min(100,s.level+1); s.n = n; s.target = randi(n*n);
gap = min(0.45,0.75-0.003*n);
side = min((s.board(3)-(n+1)*gap)/n,(s.board(4)-(n+1)*gap)/n);
gridSide = n*side+(n-1)*gap;
ox = s.board(1)+(s.board(3)-gridSide)/2;
oy = s.board(2)+(s.board(4)-gridSide)/2;
base = s.palette(mod(s.level-1,size(s.palette,1))+1,:);
delta = max(0.055,0.15-0.00095*(n-2));
alt = base+delta*(1-base);
for k = 1:n*n
    r = floor((k-1)/n); c = mod(k-1,n); col = base;
    if k == s.target, col = alt; end
    x = ox+c*(side+gap); y = oy+gridSide-side-r*(side+gap);
    if k > s.tileCount
        s.tiles(k) = rectangle(s.ax,'Position',[x y side side], ...
            'FaceColor',col,'EdgeColor',col,'LineWidth',0.2, ...
            'HitTest','off','PickableParts','none');
    else
        set(s.tiles(k),'Position',[x y side side],'FaceColor',col, ...
            'EdgeColor',col,'Visible','on');
    end
end
for k = n*n+1:s.tileCount, set(s.tiles(k),'Visible','off'); end
s.tileCount = max(s.tileCount,n*n);
s.ox = ox; s.oy = oy; s.side = side; s.gap = gap;
s.cursorIndex = 1; s.cursorT = 0;
if ~isempty(s.cursor), set(s.cursor,'Visible','off'); end
% Make a fresh outline after the tiles so it is always drawn on top.
s.cursor = rectangle(s.ax,'Position',tilePosition(s,1), ...
    'FaceColor','none','EdgeColor',[0.28 0.20 0.34], ...
    'LineWidth',3,'HitTest','off','PickableParts','none');
set(s.levelText,'String',sprintf('LEVEL %02d',s.level));
set(s.gridText,'String',sprintf('%d x %d GRID',n,n));
end

function p = tilePosition(s,k)
r = floor((k-1)/s.n); c = mod(k-1,s.n);
p = [s.ox+c*(s.side+s.gap), ...
    s.oy+s.n*s.side+(s.n-1)*s.gap-s.side-r*(s.side+s.gap), ...
    s.side s.side];
end

function s = updateGame(s,dt,pressed)
if s.mode == 2
    if pressed
        s.level = 1; s.score = 0; s.mode = 1; s.message = 'FIND THE ODD COLOR';
        s = makeBoard(s);
    end
    return
end
if s.mode == 0
    if pressed
        s.mode = 1; s.message = 'FIND THE ODD COLOR';
    end
    return
end
s.cursorT = s.cursorT+dt;
stepTime = max(0.10,0.42-0.0025*s.n);
while s.cursorT >= stepTime
    s.cursorT = s.cursorT-stepTime;
    s.cursorIndex = mod(s.cursorIndex,s.n*s.n)+1;
end
if pressed
    if s.cursorIndex == s.target
        s.score = s.score+1;
        if s.level == 99
            s.level = 100; s.mode = 2; s.message = 'YOU WIN!  LEVEL 100';
        else
            s.level = s.level+1; s.message = 'CORRECT!  NEXT LEVEL';
            s = makeBoard(s);
        end
    else
        s.mode = 2; s.message = sprintf('GAME OVER  |  LEVEL %d',s.level);
    end
end
end

function renderGame(~,s)
set(s.msg,'String',s.message);
if s.mode == 0, set(s.msg,'String','PRESS TO START'); end
set(s.cursor,'Position',tilePosition(s,s.cursorIndex),'Visible','on');
end
Play Game
Preview

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