The Ultimate Master Forger

Zhaoxu Liu / slandarer
/
The Ultimate Master Forger
on 4 Nov 2026
3
41
16
2
9084
game.m
function g = game()
%game Your one-button game.
%
%   Build your game by filling in the three functions below:
%   initState, updateState, and renderFrame. See README.md for the
%   full contract, idioms, and a worked example.
%
%   Workflow:
%       >> minihackContest.validate   % check the contract and contest rules
%       >> minihackContest.play       % play locally at 30 fps
%       >> minihackContest.submit     % publish to the contest

g.init   = @initState;
g.update = @updateState;
g.render = @renderFrame;
end

function state = initState(ax)
state = struct();

state.X = 600;
state.V = 2;
state.AF = true;
state.AN = 0;
% Color palette
c1 = [146,116,99]./255;
c2 = [254,189,134]./255;
c3 = [254,220,168]./255;
c4 = [248,229,175]./255;
c5 = [48,61,76]./255;
c6 = [131,143,156]./255;
% Sword billet shape and alpha
state.swordBilletZ = ones([100, 300, 3]);
state.swordBilletA = ones([100, 300]);
state.swordBilletA([1:40, 60:100], 1:20) = 0;
% Mold shape and alpha
state.moldZ = ones([80, 100, 3]);
state.moldA0 = ones([80, 100]);
state.moldA0(60:80, [1:30, 70:100]) = 0;
[X, Y] = meshgrid(1:100, 1:80);
B1 = -20/99*X + 2000/99 > Y;
B3 = 40/9801*(X - 100).^2 + 10 > Y;
state.moldA1 = state.moldA0;
state.moldA1(B1) = 0;
state.moldA2 = state.moldA0;
state.moldA2(1:20, :) = 0;
state.moldA3 = state.moldA0;
state.moldA3(B3) = 0;
state.hitCount = 0;
state.sHitXL = [201, 101, 1];
state.hitXL = [];
state.mACell = {state.moldA1, state.moldA2, state.moldA3};
state.mA = state.moldA1;
% Draw sword billet to be processed
state.swordBilletHdl = gobjects(1, 5);
state.swordBilletHdl(1) = image(ax, 600 + [-150, 150], 200 + [-50, 50], state.swordBilletZ.*reshape(c3, [1, 1, 3]), 'AlphaData',state.swordBilletA);
state.swordBilletHdl(2) = image(ax, 600 + [-150, 150].*.98, 200 + [-50, 50].*.94, state.swordBilletZ.*reshape(c1, [1, 1, 3]), 'AlphaData',state.swordBilletA);
state.swordBilletHdl(3) = image(ax, 600 + [-150, 150].*.96, 200 + [-50, 50].*.88, state.swordBilletZ.*reshape(c2, [1, 1, 3]), 'AlphaData',state.swordBilletA);
state.swordBilletHdl(4) = image(ax, 600 + [-150, 150].*.94, 200 + [-50, 50].*.82, state.swordBilletZ.*reshape(c3, [1, 1, 3]), 'AlphaData',state.swordBilletA);
state.swordBilletHdl(5) = image(ax, 600 + [-150, 150].*.92, 200 + [-50, 50].*.76, state.swordBilletZ.*reshape(c4, [1, 1, 3]), 'AlphaData',state.swordBilletA);
% Draw example sword billet
sA = state.swordBilletA;
sA = hit(sA, state.sHitXL(1), state.moldA1);
sA = hit(sA, state.sHitXL(2), state.moldA2);
sA = hit(sA, state.sHitXL(3), state.moldA3);
state.sSwordBilletHdl = gobjects(1, 5);
state.sSwordBilletHdl(1) = image(ax, 180 + [-150, 150], 200 + [-50, 50], state.swordBilletZ.*reshape(c3, [1, 1, 3]), 'AlphaData',sA);
state.sSwordBilletHdl(2) = image(ax, 180 + [-150, 150].*.98, 200 + [-50, 50].*.94, state.swordBilletZ.*reshape(c1, [1, 1, 3]), 'AlphaData',sA);
state.sSwordBilletHdl(3) = image(ax, 180 + [-150, 150].*.96, 200 + [-50, 50].*.88, state.swordBilletZ.*reshape(c2, [1, 1, 3]), 'AlphaData',sA);
state.sSwordBilletHdl(4) = image(ax, 180 + [-150, 150].*.94, 200 + [-50, 50].*.82, state.swordBilletZ.*reshape(c3, [1, 1, 3]), 'AlphaData',sA);
state.sSwordBilletHdl(5) = image(ax, 180 + [-150, 150].*.92, 200 + [-50, 50].*.76, state.swordBilletZ.*reshape(c4, [1, 1, 3]), 'AlphaData',sA);
% Draw example molds
state.sMoldHdl1 = gobjects(1, 2);
state.sMoldHdl1(1) = image(ax, 460 + [-50, 50], 500 + [-40, 40], state.moldZ.*reshape(c5, [1, 1, 3]), 'AlphaData',state.moldA1);
state.sMoldHdl1(2) = image(ax, 460 + [-50, 50].*.92, 500 + [-40, 40].*.9, state.moldZ.*reshape(c6, [1, 1, 3]), 'AlphaData',state.moldA1);
state.sMoldHdl2 = gobjects(1, 2);
state.sMoldHdl2(1) = image(ax, 460 + 140 + [-50, 50], 500 + [-40, 40], state.moldZ.*reshape(c5, [1, 1, 3]), 'AlphaData',state.moldA2);
state.sMoldHdl2(2) = image(ax, 460 + 140 + [-50, 50].*.92, 500 + [-40, 40].*.9, state.moldZ.*reshape(c6, [1, 1, 3]), 'AlphaData',state.moldA2);
state.sMoldHdl3 = gobjects(1, 2);
state.sMoldHdl3(1) = image(ax, 460 + 280 + [-50, 50], 500 + [-40, 40], state.moldZ.*reshape(c5, [1, 1, 3]), 'AlphaData',state.moldA3);
state.sMoldHdl3(2) = image(ax, 460 + 280 + [-50, 50].*.92, 500 + [-40, 40].*.9, state.moldZ.*reshape(c6, [1, 1, 3]), 'AlphaData',state.moldA3);
% Draw lathe and molds
plot(ax, [420, 780], [200, 200] - 150, 'LineWidth',8, 'Color',c5, 'Marker','o', 'MarkerSize',4)
plot(ax, [420, 780], [200, 200] + 150, 'LineWidth',8, 'Color',c5, 'Marker','o', 'MarkerSize',4)
plot(ax, [420, 780], [200, 200] - 150, 'LineWidth',4, 'Color',c6)
plot(ax, [420, 780], [200, 200] + 150, 'LineWidth',4, 'Color',c6)
state.moldHdlU = gobjects(1, 2);
state.moldHdlU(1) = image(ax, 600 + [-50, 50], 300 + [-40, 40], state.moldZ.*reshape(c5, [1, 1, 3]), 'AlphaData',state.mA);
state.moldHdlU(2) = image(ax, 600 + [-50, 50].*.92, 300 + [-40, 40].*.9, state.moldZ.*reshape(c6, [1, 1, 3]), 'AlphaData',state.mA);
state.moldHdlD = gobjects(1, 2);
state.moldHdlD(1) = image(ax, 600 + [-50, 50], 100 + [-40, 40], state.moldZ.*reshape(c5, [1, 1, 3]), 'AlphaData',flipud(state.mA));
state.moldHdlD(2) = image(ax, 600 + [-50, 50].*.92, 100 + [-40, 40].*.9, state.moldZ.*reshape(c6, [1, 1, 3]), 'AlphaData',flipud(state.mA));
state.linkHdlU = plot(ax, state.X.*[1,1], [350, 320], 'LineWidth',8, 'Color',c5, 'Marker','o', 'MarkerSize',4, 'LineStyle','-');
state.linkHdlD = plot(ax, state.X.*[1,1], [50, 80], 'LineWidth',8, 'Color',c5, 'Marker','o', 'MarkerSize',4, 'LineStyle','-');
% Display score
text(ax, 20, 500, {'The Ultimate'; 'Master Forger'}, 'FontSize',35, 'FontWeight','bold', 'Color',c5)
state.scoreHdl = text(ax, 20, 420, 'Your score: ', 'FontSize',21, 'FontWeight','bold', 'Color',c5);
state.titleHdl = text(ax, 20, 360, ' ', 'FontSize',25, 'FontWeight','bold', 'Color',c5);
end

function state = updateState(state, ~, pressed)
    if state.AF && state.V == 0 
        if state.hitCount < 3
            state.V = 2; state.AN = 0;
            state.mA = state.mACell{state.hitCount + 1};
        else
            state.AN = 0;
            state.mA = zeros(80, 100);
            state.linkHdlU.Color = 'none';
            state.linkHdlD.Color = 'none';
            d = abs(state.sHitXL - state.hitXL);
            d = min(d, 50); 
            score = 30.*(50 - d)./40;  
            score(d <= 10) = 30;
            score(d >= 50) = 0;
            score = 10 + round(sum(score));
            state.scoreHdl.String = ['Your score: ', num2str(score)];
            titlesEN = {'Hearth Apprentice', 'Anvil Craftsman', ...
                'Quenching Master', 'Celestial Grandmaster Forger'};
            if score < 60
                idx = 1;
            elseif score < 80
                idx = 2;
            elseif score < 90
                idx = 3;
            else
                idx = 4;
            end
            state.titleHdl.String = titlesEN{idx};
        end
    end
    if pressed && state.AF
        state.V = 0; state.AF = false; state.hitCount = state.hitCount + 1;
        state.hitXL(state.hitCount) = round(state.X - 50 - 450);
        state.swordBilletA = hit(state.swordBilletA, state.hitXL(state.hitCount), state.mA);
        state.AN = 0;
    end
    if (~state.AF) && (state.AN < 5)
        state.AN = state.AN + 1;
        if state.AN >= 5
            state.AF = true;
        end
    end
    if state.X >= 760 || state.X <= 440
        state.V = -state.V;
    end
    state.X = state.X + state.V;
end

function renderFrame(~, state)
    state.moldHdlU(1).XData = state.X + [-50, 50];
    state.moldHdlU(2).XData = state.X + [-50, 50].*.92;
    state.moldHdlD(1).XData = state.X + [-50, 50];
    state.moldHdlD(2).XData = state.X + [-50, 50].*.92;
    state.linkHdlU.XData = state.X.*[1,1];
    state.linkHdlD.XData = state.X.*[1,1];
    state.moldHdlU(1).YData = 300 - 12*state.AN + [-40, 40];
    state.moldHdlU(2).YData = 300 - 12*state.AN + [-40, 40].*.9;
    state.moldHdlD(1).YData = 100 + 12*state.AN + [-40, 40];
    state.moldHdlD(2).YData = 100 + 12*state.AN + [-40, 40].*.9;
    state.linkHdlU.YData = [350, 320 - 12*state.AN];
    state.linkHdlD.YData = [50, 80 + 12*state.AN];
    if state.AN >= 5
        for i = 1:5
            state.swordBilletHdl(i).AlphaData = state.swordBilletA;
        end
    end
    state.moldHdlU(1).AlphaData = state.mA;
    state.moldHdlU(2).AlphaData = state.mA;
    state.moldHdlD(1).AlphaData = flipud(state.mA);
    state.moldHdlD(2).AlphaData = flipud(state.mA);
end

function A = hit(A, x, a)
a = a(1:50, :);
b = ((x:(x+99)) < 1) | ((x:(x+99)) > 300);
a(:, b) = [];
tAU = A(51:100, max(x, 1):min(x + 99, 300));
tAD = A(1:50, max(x, 1):min(x + 99, 300));
A(51:100, max(x, 1):min(x + 99, 300)) = 1 - ((1 - tAU) | a);
A(1:50, max(x, 1):min(x + 99, 300)) = 1 - ((1 - tAD) | flipud(a));
end
Play Game
Preview

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