We already had a main loop for our game, but it didn’t to anything:D.
Here we’ll modify it to make it work with our board and our userInterface.
We keep the usual SFML headers, and we add our custom classes:
We create the window and we add a frame rate limit. By The Way if you don’t want to use anti aliasing replace the appropriate lines of code :
We already have a fully working game. But… we can’t play it yet!! We have to decide how the game should work with the player… Well, I’ve already decided it for you 😀
When the player clicks a column, it will try to add a token.
If the column has no more empty spaces, the player should retry in another column.
When a player has won, or the board is full. A click on the screen will restart the game. You can play again 😉
To do these, we’ll have a class that will interact with the players.
We include board.h because we’re using the board within the userInterface class:
In this post we’re creating the necessary code to display the game’s board. It should be very easy to understand, so if you have any problems or suggestions please make a comment.
The main loop :
// Create main window, using the best available resolution
"Your first SFML game: 4 in a row!");
// Reduce CPU usage by limiting the times a frame
// is drawn per second
// This is the main loop
// It will loop until you exit the program
// Here we process the events list
// Close window : exit
if (Event.Type == sf::Event::Closed)
// Clear the screen with a color
// Here you will draw all stuff in the frame buffer
// Render the frame on screen
If you compile this code, it will create a black window. This is the base of our code.
Have you ever thought about creating you’re own super classic mario game, or you’re own zelda series? Well, you’re dream has come true… with SFML you’re about to create you’re first game!! To make it easy I’ve chosen to recreate the well-known game Connect Four. Ready??… Go!!
Before starting the game development be sure to have :
Let the coding start!!
There are two main ways of creating this type of games (board games).
- By drawing directly to the screen the components of the game (circles, lines, rectangles, etc).
- or, By using textures (images) and placing them on screen.
For the sake of this example, we’re using the first approach. We’ll be drawing a background color with circles. Three kinds of circles will make the whole : empty spaces, red tokens and yellow tokens. The outline of a winner combination (4 in a row) will be highlighted.
In the end, we’ll have a game like this:
Here you’ll find the Windows executable.
And here the complete sources, including a Code::Blocks Project.
The sourcecode is released under the zlib/png license.
To be continued…
SFML is a recent open source multimedia library developed by Laurent Gomila which is a SDL direct replacement. SFML is multiplatform ready. It provides easy acces to graphics, input devices, sound, network and lots of stuff that will do your programming tasks much eaisier and fun to code.
SFML is targeted mainly to game developers, but any kind of multimedia software can easily be done with this library.
What kind of stuff can SFML do? Visit this forum to find out cool creations, games and projects. You’ll be impressed.