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

Revisions of main.cpp

Revision Date Message Actions
17:d6a3b29cab31 2015-05-11 Added sound effects ++ File  Diff  Annotate
14:b4fed570abaf 2015-05-09 Added function for generating random seed from two unconnected AnalogIn pins. File  Diff  Annotate
13:7ab71c7c311b 2015-05-09 Expanded functionallity of drawImage - inverse, flipX, flipY. Collision test for all entities. Added simple enemy. File  Diff  Annotate
10:f2488a0ecab7 2015-05-08 Encapsluated PinDetect buttons in InputManager (made private) File  Diff  Annotate
8:9ac6a428fa26 2015-05-02 Added Splash/Title Screen + Prototyping player movement File  Diff  Annotate
7:678873947b29 2015-05-01 Fixed bug in State.h: Not setting fsm variable. State classes can now request the state to be changed. File  Diff  Annotate
6:edb48de563a9 2015-05-01 Implemented MainMenu in new finite state machine. Implemented internal fsm in MainMenu. File  Diff  Annotate
5:100d960fc6d5 2015-05-01 Mostly finished State and StateManager class. Some additional work must be done when adding new main states. File  Diff  Annotate
4:d6661b976359 2015-05-01 Started rewriting the main finite state machine - design in progress File  Diff  Annotate
3:4e3f342a135c 2015-04-28 More compact main menu FSM File  Diff  Annotate
2:0ae5ac8b0cac 2015-04-28 More work on the menu system File  Diff  Annotate
1:0cfe2255092a 2015-04-28 Simple Menu test - Uses PinDetect for debouncing. File  Diff  Annotate
0:1f92de30d43e 2015-04-26 Added Joystick support. File  Diff  Annotate