Crashy Car

Inspired by Flappy Bird, Crashy Car is a top-down game in C++ and Qt 5.15.2 for the BeagleBone Black (BBB) using an LCD touchscreen where the player plays as a car driving on a desert highway at high speeds, trying to avoid potholes and cacti while getting the highest score possible. The goal of the game is to accumulate as many points as possible and avoid crashing into obstacles.

Obstacles appear along the top of the screen, and the rate at which they appear increases as the game progresses. The car (player) remains fixed along the vertical axis and the background is also static. Roadlines and obstacles will “move” downward at the same rate making it look like the car is moving forward. Once the obstacles reach the bottom of the screen, they will disappear. The player will be able to steer the car to avoid these obstacles by tilting the accelerometer left or right. If the car hits an obstacle, the game is over and the score is compared to the current high score. If it is greater, it will display a new high score message, otherwise it will display the old high score and the current score.

Requirements:

• Qt 5.15.2
• qmake toolchain for target
• BeagleBone Black
• 4.3” LCD touchscreen and cape for BeagleBone by element14
• Adafruit I2C LSM9DS0 accelerometer breakout board

File Organization

• /crashy-car
  • crashy_car.pro (project file)
  • resources.qrc
  • /source
    • contains all the source files the project
  • /resources
    • contains all the images used in the project

How to Build and Install

• Connect cape to BeagleBone
• On the accelerometer breakout board, connect the pins to the GPIO headers on the cape as follows: SDA to header pin 20, SCL to header pin 19, VIN to header pin 4 and GND to header pin 2.
• Download the repo to a directory of your choosing.
• Run qmake in the same directory as crashy_car.pro to generate a Makefile.
• Run make
• Move the resulting executable crashy-car to the BeagleBone
• Make sure the executable has execution privileges and use ./crashy-car to run the game.

How to play

• Hold the accelerometer by the two holes in the top like a game pad. This means the writing will be upside down, but this is the most comfortable way to hold it while getting the best performance and avoiding the wiring.
• Touch the start button near the bottom of the screen.
• Steer the accelerometer left or right like a steering wheel to move the car left or right.
• If you crash, touch the restart button to start again.