Learning FreeBASIC through videogames

Hello everybody! Let's enrich our first code drawing four colored squares. This is the result of our new code: An screen to play with 400 pixels of width and 300 pixels of height and four squares of 32x32 pixels one in each corner. The white square is painted or filled with same color. Let me explain the new keywords used: line  to draw a line between a point referenced with its coordinates (value in axis x,value in axis y) and an increment/decrement in pixels form this point -step(inc/dec in axis x,inc/dec in axis y) and two parameters separated by comma, the first is the color and the second is optional, if you used it you can put a b that means box or bf that means box filled. Try changing color values from 0 (black or transparent) to 15 (white) and experiment with the parameters. This is e nough by now, in t he next entry we will make great advance learning a change in the structure of the code because the famous game loop. Contact me for any question,...