ALGERIAN COSMIC JET

Said BOUREZG
/
ALGERIAN COSMIC JET
on 2 Nov 2026
2
20
5
0
7338
game.m
function g = game()
%game ALGERIAN COSMIC JET - tap to flip between climb and dive.
g.init   = @initState;
g.update = @updateState;
g.render = @renderFrame;
end

function state = initState(ax)
ax.YDir  = 'normal';
ax.Color = [0.02 0.03 0.08];
ax.YLim  = [-11 11];
ax.XLim  = [-5 24.33];
h = {'HitTest','off','PickableParts','none'};
state.ax = ax;
state.NP = 30;
state.NA = 60;
state.speed  = 14.5;
state.target = 520;
state.best   = 0;
state.geoG = [1.15 -0.85 -0.45 -0.85 1.15; 0 0.55 0 0 0];
state.geoW = [1.15 -0.85 -0.45 -0.85 1.15; 0 0 0 -0.55 0];
state.sx = rand(1,60)*40 - 10;
state.sy = (rand(1,60) - 0.5)*20;

g.st = line(ax, state.sx, state.sy, 'LineStyle','none', 'Marker','.', ...
    'MarkerSize',7, 'Color',[0.8 0.85 1], h{:});
line(ax, [-100 2000], [ 9.8  9.8], 'Color',[0.2 0.4 0.7], 'LineStyle','--', h{:});
line(ax, [-100 2000], [-9.8 -9.8], 'Color',[0.2 0.4 0.7], 'LineStyle','--', h{:});

for k = 1:state.NP
    g.ha(k) = rectangle(ax, 'Position',[0 0 1 1], 'Curvature',[1 1], ...
        'FaceColor','none', 'EdgeColor',[1 0.25 0.15], 'Visible','off', h{:});
    g.pl(k) = rectangle(ax, 'Position',[0 0 1 1], 'Curvature',[1 1], ...
        'FaceColor',[0.85 0.12 0.1], 'EdgeColor',[1 0.45 0.3], ...
        'LineWidth',1.2, 'Visible','off', h{:});
end

g.gr = patch(ax, 'XData',state.geoG(1,:), 'YData',state.geoG(2,:), ...
    'FaceColor',[0 0.48 0.22], 'EdgeColor',[0.9 0.9 0.9], h{:});
g.wh = patch(ax, 'XData',state.geoW(1,:), 'YData',state.geoW(2,:), ...
    'FaceColor',[1 1 1], 'EdgeColor',[0.9 0.9 0.9], h{:});
g.em = line(ax, 0, 0, 'LineStyle','none', 'Marker','p', 'MarkerSize',9, ...
    'MarkerFaceColor',[0.95 0.1 0.15], 'MarkerEdgeColor',[0.95 0.1 0.15], h{:});

col = [0 0.5 0.25; 1 1 1; 0.95 0.15 0.15; 1 0.8 0.1];
for c = 1:4
    g.pa(c) = line(ax, NaN, NaN, 'LineStyle','none', 'Marker','o', ...
        'MarkerSize',5, 'MarkerFaceColor',col(c,:), 'MarkerEdgeColor','none', h{:});
end

g.bb = line(ax, [0 1], [10.4 10.4], 'Color',[0.15 0.2 0.3], 'LineWidth',6, h{:});
g.bf = line(ax, [0 0], [10.4 10.4], 'Color',[0 0.9 0.4], 'LineWidth',6, h{:});
g.tp = text(ax, 0, 10.4, '', 'Color','w', 'FontSize',11, 'FontWeight','bold', ...
    'HorizontalAlignment','left', h{:});
g.msg = text(ax, 0, 0, '', 'Color',[1 0.85 0.2], 'FontSize',15, ...
    'FontWeight','bold', 'HorizontalAlignment','center', h{:});

state.g = g;
state = newRound(state);
end

function state = newRound(state)
n = state.NP;
na = state.NA;
state.mode = 0;
state.lock = 0;
state.px = 0;
state.py = 0;
state.ang = 0;
state.dir = 1;
state.prog = 0;
state.cam = 5;
state.planX = 24 + (0:n-1)*16.5 + (rand(1,n) - 0.5)*4;
state.planY = (rand(1,n) - 0.5)*12.5;
state.planR = 1 + rand(1,n)*1.5;
state.pX = zeros(1,na);
state.pY = zeros(1,na);
state.pVx = zeros(1,na);
state.pVy = zeros(1,na);
state.life = zeros(1,na);
end

function state = updateState(state, dt, pressed)
state.lock = max(0, state.lock - dt);

if state.mode == 1
    if pressed
        state.dir = -state.dir;
    end
    state.ang = state.ang + (state.dir*pi/4 - state.ang)*min(1, 24*dt);
    state.px = state.px + state.speed*cos(state.ang)*dt;
    state.py = state.py + state.speed*sin(state.ang)*dt;

    d = sqrt((state.px - state.planX).^2 + (state.py - state.planY).^2);
    if any(d <= state.planR + 0.45) || abs(state.py) >= 9.8
        state.mode = 2;
        state.lock = 0.6;
        na = state.NA;
        a = rand(1,na)*2*pi;
        s = 2 + rand(1,na)*11;
        state.pVx = cos(a).*s;
        state.pVy = sin(a).*s;
        state.pX = state.px*ones(1,na);
        state.pY = state.py*ones(1,na);
        state.life = 0.5 + rand(1,na)*0.45;
        state.best = max(state.best, state.prog);
        return
    end

    state.prog = min(100, floor(state.px/state.target*100));
    if state.prog >= 100
        state.mode = 3;
        state.lock = 0.6;
        state.best = 100;
    end

    state.cam = state.px + 5;
    old = state.sx < state.cam - 11;
    m = nnz(old);
    state.sx(old) = state.cam + 19 + rand(1,m)*4;
    state.sy(old) = (rand(1,m) - 0.5)*20;
else
    state.pX = state.pX + state.pVx*dt;
    state.pY = state.pY + state.pVy*dt;
    state.life = state.life - dt;
    if pressed && state.lock <= 0
        if state.mode == 0
            state.mode = 1;
        else
            b = state.best;
            state = newRound(state);
            state.best = b;
            state.mode = 1;
        end
    end
end
end

function renderFrame(~, state)
g = state.g;
cam = state.cam;
state.ax.XLim = [cam - 10, cam + 19.33];
set(g.st, 'XData', state.sx, 'YData', state.sy);

vis = abs(state.planX - cam - 4.67) < 17;
for k = find(vis)
    r = state.planR(k);
    x = state.planX(k);
    y = state.planY(k);
    g.pl(k).Position = [x - r, y - r, 2*r, 2*r];
    g.ha(k).Position = [x - 1.3*r, y - 1.3*r, 2.6*r, 2.6*r];
    g.pl(k).Visible = 'on';
    g.ha(k).Visible = 'on';
end
if any(~vis)
    set(g.pl(~vis), 'Visible', 'off');
    set(g.ha(~vis), 'Visible', 'off');
end

c = cos(state.ang);
s = sin(state.ang);
R = [c -s; s c];
rg = R*state.geoG;
rw = R*state.geoW;
onoff = {'off', 'on'};
v = onoff{(state.mode ~= 2) + 1};
set(g.gr, 'XData', rg(1,:) + state.px, 'YData', rg(2,:) + state.py, 'Visible', v);
set(g.wh, 'XData', rw(1,:) + state.px, 'YData', rw(2,:) + state.py, 'Visible', v);
set(g.em, 'XData', state.px, 'YData', state.py, 'Visible', v);

for k = 1:4
    idx = k:4:state.NA;
    x = state.pX(idx);
    y = state.pY(idx);
    dead = state.life(idx) <= 0;
    x(dead) = NaN;
    y(dead) = NaN;
    set(g.pa(k), 'XData', x, 'YData', y);
end

left = cam - 8;
set(g.bb, 'XData', [left, left + 18]);
set(g.bf, 'XData', [left, left + 18*state.prog/100]);
g.tp.Position = [cam + 10.5, 10.4, 0];
g.tp.String = sprintf('%d%%  BEST %d%%', state.prog, max(state.best, state.prog));

g.msg.Position = [cam + 4.67, 0, 0];
if state.mode == 0
    g.msg.String = sprintf(['ALGERIAN COSMIC JET\n\n' ...
        'TAP / SPACE: switch climb / dive\n\n' ...
        'Dodge the red planets, reach 100%%\n\nTap to launch']);
    g.msg.Color = [0.3 0.9 1];
elseif state.mode == 2
    g.msg.String = sprintf('CRASHED INTO A RED PLANET!\n\nPROGRESS: %d%%\n\nTap to retry', state.prog);
    g.msg.Color = [1 0.3 0.3];
elseif state.mode == 3
    g.msg.String = sprintf('MISSION ACCOMPLISHED!\n\nSector cleared at 100%%\n\nTap to relaunch');
    g.msg.Color = [0.2 1 0.5];
else
    g.msg.String = '';
end
end
Play Game
Preview

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