GW BASIC TUTORIAL FULL
GW BASIC TUTORIAL FREE

GW BASIC TUTORIAL FREE

You are free to use any screen mode that you desire, however, most of the samples shown here will use screen mode 13H so I figured that it would be helpful that I would make you familiar with that mode. Trust me, it runs much faster than the SUB procedure above will. You can write some more sophisticated screen rendering routines using a lower level language that can run like blazes compared to BASIC.

GW BASIC TUTORIAL FULL

Try it out and you should get a screen full of random colored dots. This example can help clarify how the screen is laid out in memory, you can run this example using either the QBasic interpreter or the QuickBASIC compiler directly. That is, each pixel is equal to one byte and the bytes are laid out in the x grid just as the screen resolution itself. The main properties that are real desirable in screen mode 13H SCREEN 13 is the fact that the pixels are laid out sequentially in memory, byte by byte. The resolution is grainy compared to today's standards, but the biggest reason most programmer's choose it is because of it's ease of use in screen rendering. However, many programmer's of games seem to prefer the screen mode 13H. The graphics screen The graphics screen that you choose is for the most part of your own choice as I have said before, when using BASIC, the commands themselves are real simple. In those cases we will have to go to a lower machine level programming to get around these limitations. However, you may find that some of the graphics functions supplied with the language are not completely adequate. Using BASIC, there is not a whole lot of machine level detail that we need to go into, you can for the most part, use the graphics functions that are made available by the language itself and save yourself much of the trouble of 're-inventing' the wheel. Please sign my guestbook View my guestbook entries Understanding Graphics In order to write good games, or to write any program that takes advantage of the graphics system of a computer, we need at the very least a basic understanding of graphics. If this page looks like garbage then you need one of these browsers Please sign my programmer's page guestbook.

Gw basic tutorial