x=3--changable variables
y=-3200
fc=1

w=128--fixed/unchangable variables
h=128
l=0

cls()

function updatelayer()
    line(0,l,128,l,fc+7) --uses fc to fill the backround
    line(y+33,l,0,l,x-3) --outlines the grass
    line(y,l,0,l,x) --makes a grassland area

    x=x--you can change these updates, but the equations have to start with the variable being updated (x(equation))
    y=y+32
    fc=fc*1.01

    l+=1--update the layer being drawn on, you cant change this equation
end

repeat
    updatelayer()
until l==128