GRAVITY FLIP RUNNER

KARUPPASAMYPANDIYAN M
/
GRAVITY FLIP RUNNER
on 7 Nov 2026
1
6
4
0
9999
game.m
function g=game
g.init=@IS;g.update=@US;g.render=@RF;
function s=IS(ax)
ax.XLim=[0 800];ax.YLim=[0 600];ax.Color=[.02 .03 .06];ax.YDir='normal';ax.XTick=[];ax.YTick=[];s.bs=0;n={'HitTest','off','PickableParts','none'};hn=[{'HorizontalAlignment','center'},n];s=RG(s);[k,j]=ndgrid(0:15,0:3);k=k(:);j=j(:);a=j*17+k+1;b=mod(j+1,4)*17+k+1;s.tj=j+1;s.tn=OP(ax,n,68,[a b b+1 a+1],[.03 .05 .08],.5);f=(1:28)'+[0 14 28 42]+42*((1:28)'>14);s.o1=OP(ax,n,112,f,[1 .7 .2],1.5);s.pk=SC(ax,n,1);sk=[.85 .62 .48];sh=[.95 .5 .15];CL=[.03 .04 .06;.12 .13 .2;sh;sh;sk;sk;.2 .12 .07;repmat([sk;.16 .18 .26;sk;.95 .95 1;sh;sk;sk],2,1)];rc=kron(CL*.55,ones(17,1));rc(17:17:end,:)=min(CL*1.35,1);s.rn=patch(ax,'Vertices',zeros(357,2),'Faces',FA(0:20),'FaceVertexCData',rc,'FaceColor','interp','EdgeColor','none',n{:});s.au=SC(ax,n,.3);s.o2=OP(ax,n,112,f,[1 .7 .2],1.5);s.hud=TX(ax,15,575,'',[.3 1 .8],12,n{:});s.ti=TX(ax,400,480,'GRAVITY FLIP RUNNER',[.3 1 .75],28,hn{:});s.ins=TX(ax,400,320,sprintf('HOW TO PLAY\n\nTAP ANYWHERE TO START\nTAP TO FLIP FLOOR / CEILING\nAVOID THE RED BLOCKS\nGOLD ORB = POINTS\nCYAN ORB = SHIELD'),[.85 .93 1],13,hn{:});s.ov=TX(ax,400,275,'',[1 .4 .4],22,hn{:});
function h=SC(ax,n,a)
h=scatter(ax,NaN,NaN,1,[1 1 1],'filled','MarkerFaceAlpha',a,n{:});
function ST(h,x,y,z,c)
set(h,'XData',x,'YData',y,'SizeData',z,'CData',c);
function f=FA(o)
[a,b]=ndgrid(1:16,o);b=17*b(:);a=a(:);f=[b+17 b+a b+mod(a,16)+1];
function h=OP(ax,n,v,f,c,w)
h=patch(ax,'Vertices',zeros(v,2),'Faces',f,'FaceVertexCData',zeros(size(f,1),3),'FaceColor','flat','EdgeColor',c,'LineWidth',w,n{:});
function h=TX(ax,x,y,t,c,f,varargin)
h=text(ax,x,y,t,'Color',c,'FontSize',f,'FontWeight','bold',varargin{:});
function [x,y]=PR(x,y,z)
x=400+420*x./z;y=275+420*y./z;
function s=RG(s)
[s.z,s.ty,s.sd,s.y]=deal(zeros(14,1));[s.sc,s.cn,s.sh,s.ds,s.vy,s.th,s.ph,s.go,s.ot]=deal(0);s.ry=-2.3;s.gd=-1;s.tm=1;s.mn=1;s.v=7;
function s=US(s,dt,p)
if s.go,s.ot=s.ot+dt;if p&&s.ot>.8,s=RG(s);end,return,end
v=7;if ~s.mn,v=12*(1+min(s.ds/1200,1.3));end
s.v=v;s.ph=s.ph+dt*(8+.18*v);s.ds=s.ds+v*dt;if s.mn,s.mn=~p;return,end
s.z=s.z-v*dt;s.sc=s.sc+.5*v*dt;if p,s.gd=-s.gd;s.vy=0;end
s.vy=s.vy+65*s.gd*dt;s.ry=s.ry+s.vy*dt;if abs(s.ry)>2.3,s.ry=2.3*sign(s.ry);s.vy=0;end
s.th=s.th+(pi*(s.gd>0)-s.th)*min(1,10*dt);d=s.z-6;h=s.ty==1&d<.4&d>-2&s.sd*s.ry>-.1;if any(h),if s.sh,s.sh=0;s.ty(h)=0;else,s.go=1;s.ot=0;s.bs=max(s.bs,floor(s.sc));end,end
q=s.ty>1&abs(d)<.9&abs(s.y-s.ry)<1.6;c=nnz(q&s.ty==2);s.cn=s.cn+c;s.sc=s.sc+10*c;s.sh=s.sh|any(q&s.ty==3);s.ty(q)=0;s.ty(s.z<.9)=0;s.tm=s.tm-dt;if s.tm<0
    s.tm=.75+rand*.8;r=rand;e=sign(rand-.5);n=1;t=1;y=0;if r>=.9,t=3;y=e*2.3;elseif r>=.6,t=2;n=3;y=e*2.3*(rand<.7);end
    i=find(s.ty==0,n);s.ty(i)=t;s.sd(i)=e;s.y(i)=y;s.z(i)=60+3*(0:numel(i)-1)';end
function RF(~,s)
TN(s);OB(s,s.z>=6,s.o1);OB(s,s.z<6,s.o2);PK(s);RN(s);s.hud.String=sprintf('SCORE: %d | BEST: %d | COINS: %d',floor(s.sc),s.bs,s.cn);o={'off','on'};set([s.ins s.ti],'Visible',o{s.mn+1});s.ov.Visible=o{s.go+1};s.ov.String=sprintf('GAME OVER\nSCORE: %d   BEST: %d\n\nTAP to continue',floor(s.sc),s.bs);
function TN(s)
o=mod(s.ds,4);z=max((0:16)'*4-o+1,.8);j=s.tj;[X,Y]=PR([-5 5 5 -5],[-3.2 -3.2 3.2 3.2],z);B=[.3 .34 .42;.2 .24 .32;.24 .27 .34;.2 .24 .32];c=B(j,:)*(.85+.4*cos(s.ds/130));s.tn.Vertices=[X(:) Y(:)];s.tn.FaceVertexCData=c;
function OB(s,m,h)
z=s.z;z(s.ty~=1|~m)=NaN;[z,o]=sort(z,'descend');d=s.sd(o);a=[-2.3 2.3 2.3 -2.3];[X,Y]=PR(a,[3.2 3.2 .8 .8].*d,z);[U,W]=PR(a,.8*d,z+[0 0 1.6 1.6]);C=kron([.85 .22 .12;.5 .12 .08],ones(14,1));h.Vertices=[X(:) Y(:);U(:) W(:)];h.FaceVertexCData=C;
function PK(s)
z=s.z;z(s.ty<2)=NaN;[x,y]=PR(0,s.y,z);d=546./z;sz=(.75*d).^2;sz(isnan(sz))=1;T=[1 .8 .1;.2 .75 1];c=T(max(s.ty,2)-1,:);ST(s.pk,x,y,sz,c);
function RN(s)
p=s.ph;th=s.th;g=min(max(abs(s.ry)-1.3,0),1);h=1-g;q=min(max((s.v-7)/30,0),1);[px,py]=PR(0,s.ry,6);A=(1+.35*q)*(.45+.55*g);lam=.13+.13*q;u=mod(p+[0 pi],2*pi);ua=u-2*pi*(u>4.5);cu=cos(u-5.8);hp=.18+.25*h+.42*A*cu;kn=.22+.35*h+.55*g*WV(u,.9,.25)+1.5*(.6+.4*g)*(1+.2*q)*WV(u,4.2,.4);ts=hp-kn;ws=SM((ua+1)/.9).*(1-SM((ua-2.2)/.8));nw=1-ws;al=ws.*(.12*(1-SM(ua/.5))-.75*SM((ua-1)/1.4))+nw.*(ts+.1);rc=.42*cos(hp)+.41*cos(ts)+.045-min(-.07*sin(al)-.025*cos(al),.15*sin(al)-.035*cos(al));pz=sum(ws.*rc)/max(sum(ws),.1)+(.05+.03*q)*WV(2*p-5.74,0,.25);gy=.1*A*cu(2);o0=[0 0 g*(pz-.9)];C=@(z)BT([0 0 z],0,lam,o0);N0=C(.5);Hd=@(y,z)BT([0 y z],0,.3*lam,N0);HJ=BT([-.105 0 0;.105 0 0],gy,0,o0);SJ=BT([-.215 0 .46;.215 0 .46],-1.3*gy,lam,o0);Sg=zeros(21,7);bi=zeros(21,1);bi([1 5:7 9 16])=[1e9 .08 .02 -.02 -.01 -.01];Sg(2,:)=[BT([-.1 0 .06],gy,0,o0) BT([.1 0 .06],gy,0,o0) .115];Sg(3,:)=[C(.1) C(.3) .13];Sg(4,:)=[C(.36) C(.46) .17];Sg(5,:)=[Hd(0,-.03) Hd(.01,.15) .05];Sg(6,:)=[Hd(.02,.13) Hd(.02,.25) .088];Sg(7,:)=[Hd(-.005,.135) Hd(-.005,.25) .091];for i=1:2
    e=2*i-3;r=7*i-7;H0=HJ(i,:);S0=SJ(i,:);Kn=H0+[e*.012*nw(i) .42*sin(hp(i)) -.42*cos(hp(i))];An=[H0(1)+e*(-.02+.045*nw(i)) Kn(2)+.41*sin(ts(i)) Kn(3)-.41*cos(ts(i))];d=al(i);M=[cos(d) sin(d);-sin(d) cos(d)];he=[An(1) An(2:3)+[-.07 -.025]*M];to=[An(1)+e*.01 An(2:3)+[.15 -.035]*M];cp=-cu(i);sa=.05+(.55+.35*q)*(.5+.5*g)*cp;b=sa+1.4+.3*cp+.5*h;El=S0+[e*(.035+.28*h) .3*sin(sa) -.3*cos(sa)];Wr=El+[e*(.01-.035*(cp+1)-.1*h) .27*sin(b) -.27*cos(b)];Ha=Wr+[0 .09*sin(b+.3) -.09*cos(b+.3)];Sg(8+r:14+r,:)=[H0 Kn .072;H0+[0 0 .02] H0+.55*(Kn-H0) .097;Kn An .052;he to .045;S0 El .058;El Wr .045;Wr Ha .043];end
[x1,y1,d1]=PJ(Sg(:,1:3),th,px,py);[x2,y2,d2]=PJ(Sg(:,4:6),th,px,py);[~,y0]=PR(0,sign(s.ry)*3.2,6);R=[x1 y1 x2 y2 70*Sg(:,7)];R(1,:)=[px-28 y0 px+28 y0 4.9];[~,o]=sort((d1+d2)/2+bi,'descend');R=R';c=(R(1:2,:)+R(3:4,:))/2;d=R(3:4,:)-R(1:2,:);m=atan2(d(2,:),d(1,:));w=R(5,:);a=hypot(d(1,:),d(2,:))/2+.6*w;P=@(x)sign(x).*abs(x).^.8;t=(0:15)'*pi/8;ex=a.*P(cos(t));ey=w.*P(sin(t));X=[c(1,:)+ex.*cos(m)-ey.*sin(m);c(1,:)-.3*w];Y=[c(2,:)+ex.*sin(m)+ey.*cos(m);c(2,:)+.3*w];s.rn.Vertices=[X(:) Y(:)];s.rn.Faces=FA(o-1);if ~s.sh,px=NaN;end
ST(s.au,px,py,18632.25,[.3 .8 1]);
function w=BT(v,a,l,o)
w=v*[cos(a) sin(a) 0;-sin(a) cos(a) 0;0 0 1]*[1 0 0;0 cos(l) -sin(l);0 sin(l) cos(l)]+o;
function [x,y,d]=PJ(v,t,px,py)
W=v*[cos(t) 0 sin(t);0 1 0;-sin(t) 0 cos(t)]*[.8253 -.07879 -.55911;.564642 .11516 .817260528;0 .990215996 -.139543115];x=px+70*W(:,1);y=py+70*W(:,2);d=W(:,3);
function y=WV(u,c,w)
y=exp((cos(u-c)-1)/w);
function y=SM(x)
x=min(max(x,0),1);y=x.*x.*(3-2*x);
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Preview

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