pong

player={}

player[1]={x=10,y=136-20,w=5,h=40,vel=3,score=0}
player[1].img = image.create(player[1].w,player[1].h,color.new(0,255,0))

player[2]={x=465,y=136-20,w=5,h=40,vel=3,score=0}
player[2].img = image.create(player[2].w,player[2].h,color.new(0,0,255))

ball={x=240,y=136,w=10,h=10,ang=(math.random()-0.5)*math.pi,v=5,dx=0,dy=0}
ball.img=image.create(ball.w,ball.h,color.new(255,0,0))

goal={}
goal[1]={x=0,y=116,w=5,h=40}
goal[2]={x=475,y=116,w=5,h=40}



function colision(Obj1,Obj2)
if Obj1.x + Obj1.w >= Obj2.x and
    Obj1.x <= Obj2.x + Obj2.w and
    Obj1.y + Obj1.h >= Obj2.y and
    Obj1.y <= Obj2.y + Obj2.h then
return true else return false
end
end

ball.img:center(ball.w/2,ball.h/2)


while true do
controls.read()



ball.dx, ball.dy = math.vector.cartesian(ball.v,ball.ang);
ball.x = ball.x + ball.dx;
ball.y = ball.y + ball.dy;
if (ball.y-ball.h/2<0 and ball.dy<0) or (ball.y+ball.h/2>272 and ball.dy>0) then ball.dy=-ball.dy;end
if (ball.x-ball.w/2<0 and ball.dx<0) or (ball.x+ball.w/2>480 and ball.dx>0) then ball.dx=-ball.dx;end
for i=1, #player do
    if colision(player[i],ball) then ball.dx = -ball.dx end
    player[i].img:blit(player[i].x,player[i].y)
    draw.rect(goal[i].x,goal[i].y,goal[i].w,goal[i].h,color.new(255,255,255))
    if colision(ball,goal[1]) then player[2].score=player[2].score+1 ball.ang,ball.x,ball.y = (math.random()-0.5)*math.pi,240,136  ball.v = 5 end
    if colision(ball,goal[2]) then player[1].score=player[1].score+1 ball.ang,ball.x,ball.y = (math.random()-0.5)*math.pi,240,136 ball.v = 5 end
end

ball.v, ball.ang = math.vector.polar(ball.dx,ball.dy);

ball.img:blit(ball.x,ball.y)
if controls.down() then player[1].y = math.min(player[1].y + player[1].vel,272-player[1].h)  end
if controls.up() then player[1].y = math.max(player[1].y - player[1].vel ,0) end
if controls.cross() then player[2].y = math.min(player[2].y + player[2].vel,272-player[2].h) end
if controls.triangle() then player[2].y = math.max(player[2].y - player[2].vel ,0) end


screen.print(5,5,"        Score: "..player[1].score.."                                                     Score: "..player[2].score)

ball.v=ball.v+0.01

if controls.select() then a() end
screen.flip()
end