A simple one-level platform game. Developed as part of ELEC2645 at University of Leeds, spring 2015.

Dependencies:   N5110 PinDetect PowerControl mbed

An ARM mbed LPC1768 microcontroller have been used to develop a handheld arcade game in the style of an old-school platformer. This project is entirely my own independent work in all stages of the development; including design, defining project specifications, breadboard prototyping, schematic and PCB layout using CAD, assembly, testing and software development. Due to this being part of the ELEC2645 Embedded Systems Project module at University of Leeds, spring 2015, limitations were given on the available hardware components. Credit is due to the authors of the dependent libraries (N5110, Pin Detect, PowerControl and mbed). I would also like to thank the author of Game Programming Patterns as well as the authors of SFML Game Development for providing me with useful sources for programming design patterns.

/media/uploads/Siriagus/game_assembled.jpg

Project aims

  • Implement simple gameplay:
    • A single, fixed (no scrolling) level.
    • Player can move left to right, jump and shoot.
    • Enemies will drop from the top of the screen.
    • The player gets points for shooting enemies.
    • The player dies when it gets hits by an enemy.
  • Implement a simple menu system.
  • Enable the user to adjust the brightness of the display.
  • Output sound to enhance the user experience.

Software

The program flow is controlled by a finite state machine. The implemented design was inspired by the State design pattern from the books Game Programming Patterns and SFML Game Development. The StateManager class is responsible for updating and rendering the current selected state. It also changes the state based on request from the current state. The framework built for the state machine used in this project makes it easy to add new screens. The different main states (indicated by the background colour) and how the user interaction is shown below: /media/uploads/Siriagus/arcadegameuserinteraction.png

Hardware

Schematic:

/media/uploads/Siriagus/schematic.png

Printed circuit board (PCB):

/media/uploads/Siriagus/pcb.png

Images

A seperate program was written to convert images (png) to text-representation of the maps. Enemies and numbers on the screen are also collected from a sprite-sheet created in the same manner.

/media/uploads/Siriagus/unileeds3.png /media/uploads/Siriagus/newmap2.png

Committer:
Siriagus
Date:
Tue Apr 28 12:46:37 2015 +0000
Revision:
1:0cfe2255092a
Simple Menu test - Uses PinDetect for debouncing.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Siriagus 1:0cfe2255092a 1 #include "MainMenu.h"
Siriagus 1:0cfe2255092a 2
Siriagus 1:0cfe2255092a 3 MainMenu::MainMenu(N5110 *lcd, PinName buttonA, PinName buttonB, PinName buttonC)
Siriagus 1:0cfe2255092a 4 {
Siriagus 1:0cfe2255092a 5 this->lcd = lcd;
Siriagus 1:0cfe2255092a 6
Siriagus 1:0cfe2255092a 7 btnA = new InterruptIn(buttonA);
Siriagus 1:0cfe2255092a 8 btnB = new InterruptIn(buttonB);
Siriagus 1:0cfe2255092a 9 btnC = new InterruptIn(buttonC);
Siriagus 1:0cfe2255092a 10
Siriagus 1:0cfe2255092a 11 choice = 0;
Siriagus 1:0cfe2255092a 12 }
Siriagus 1:0cfe2255092a 13
Siriagus 1:0cfe2255092a 14 MainMenu::~MainMenu()
Siriagus 1:0cfe2255092a 15 {
Siriagus 1:0cfe2255092a 16 delete btnA;
Siriagus 1:0cfe2255092a 17 delete btnB;
Siriagus 1:0cfe2255092a 18 delete btnC;
Siriagus 1:0cfe2255092a 19 }
Siriagus 1:0cfe2255092a 20
Siriagus 1:0cfe2255092a 21 void MainMenu::nextChoiceISR()
Siriagus 1:0cfe2255092a 22 {
Siriagus 1:0cfe2255092a 23 choice %= (choice + 1);
Siriagus 1:0cfe2255092a 24 }
Siriagus 1:0cfe2255092a 25
Siriagus 1:0cfe2255092a 26 void MainMenu::run()
Siriagus 1:0cfe2255092a 27 {
Siriagus 1:0cfe2255092a 28 // Update
Siriagus 1:0cfe2255092a 29 //Nothing is done by interrupts
Siriagus 1:0cfe2255092a 30
Siriagus 1:0cfe2255092a 31 // Render
Siriagus 1:0cfe2255092a 32 lcd->printString("Play", 0, 1);
Siriagus 1:0cfe2255092a 33 lcd->printString("Highscores", 0, 2);
Siriagus 1:0cfe2255092a 34 lcd->printString("Controls", 0, 3);
Siriagus 1:0cfe2255092a 35 wait(10);
Siriagus 1:0cfe2255092a 36
Siriagus 1:0cfe2255092a 37
Siriagus 1:0cfe2255092a 38 // Todo: Insert Sleep();
Siriagus 1:0cfe2255092a 39 }