Posts Tagged ‘DAC’

How to Build an Arcade Obstacle Avoidance Game Using FPGA

Tuesday, September 6th, 2016

Image result for obstacle avoidance game

Hello FPGA innovators! Remember the arcade obstacle avoidance game where blocks of pixels fall on you and you steer clear of them moving left or right? Today’s project attempts to re engineer the same game using a VGA and FPGA. Here, a pseudo random code is used to generate obstacles that fall down and buttons on the FPGA are used to move the cursor so that none of the obstacles hit it.

The only hardware required to execute this project is an FPGA board (you might need to adapt yours if different from the author’s), a computer monitor and connection cables. This is because the FPGA board has inbuilt push buttons that can be used to move the cursor of the game, and also has the necessary DACs and VGA interfaces required to run the game.

The coding done by the author is in VHDL and everything starting from a functional flowchart to running the bit file for FPGA has been described from steps 1 to 9. Since the buttons on the FPGA has a bouncing issue, a separate debouncer code needs to be run which is available on step 2. Details regarding the VGA, coding for random obstacles and checking for collisions and updating the game are given from steps 3 to 7.

Though the authors put in 50+ hours of effort and made a great attempt, the game still could be done in a lot more simpler ways. The main code is available in the introduction to spare other followers from putting in more additional effort, but starting from choosing a different FPGA board to running through basics of other games implemented using VGA and FPGA can end up delivering something better with a lot less effort.

Give it a try and have fun!