F19: Alien Wars
Contents
Alien Wars
Abstract
Alien wars is a single player combat game, with increasing levels of difficulty. Each level has a has target number of enemy spaceships to be destroyed, before the ultimate villain ‘the alien king’ appears. Once the ultimate villain is killed the player proceeds to next level. The speed of the enemy spaceships approaching the player will increase with the increasing levels. The player can choose to either shoot the enemy spaceship using missiles or dodge it. The game ends when the player crashes with enemy spaceship.
Objectives & Introduction
This section includes the high level details of our project.
Team Members & Responsibilities
- Abhinandan Burli
- Developing enemy game algorithm
- Developing game characters on LED matrix display
- GPIO driver for LED matrix display
- Joel Samson
- Joystick interfacing - ADC driver
- Bluetooth Interfacing and developing UART driver for transmitter & receiver
- GPIO driver for LED matrix display
- Basangouda Patil
- Speaker and MP3 encoder interfacing - UART driver
- Developing game sounds
- GPIO driver for LED matrix display
Schedule
Week# | Date | Task | Status | Actual Completion Date |
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1 | 10/1/2019 |
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2 | 10/8/2019 |
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3 | 10/15/2019 |
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4 | 10/22/2019 |
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5 | 10/29/2019 |
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6 | 11/5/2019 |
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7 | 11/12/2019 |
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8 | 11/19/2019 |
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9 | 11/26/2019 |
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10 | 12/3/2019 |
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11 | 12/10/2019 |
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12 | 12/17/2019 |
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Parts List & Cost
Item# | Part Desciption | Vendor | Qty | Cost |
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1 | SJTwo Boards | From Preet | 3 | $150.00 |
2 | 32x64 RGB LED Matrix | Adafruit | 1 | $92.00 |
3 | Wiring Components and Cable | Amazon | 1 | $20 |
4 | HC05 Bluetooth module | Amazon | 2 | $35 |
5 | Adafruit Analog 2-axis thumb Joystick | Adafruit | 1 | $9 |
6 | MP3 music player (YX5300) | Amazon | 1 | $8 |
Design & Implementation
Hardware Design
Discuss your hardware design here. Show detailed schematics, and the interface here.
Hardware Interface
In this section, you can describe how your hardware communicates, such as which BUSes used. You can discuss your driver implementation here, such that the Software Design section is isolated to talk about high level workings rather than inner working of your project.
Software Design
Show your software design. For example, if you are designing an MP3 Player, show the tasks that you are using, and what they are doing at a high level. Do not show the details of the code. For example, do not show exact code, but you may show psuedocode and fragments of code. Keep in mind that you are showing DESIGN of your software, not the inner workings of it.
Implementation
This section includes implementation, but again, not the details, just the high level. For example, you can list the steps it takes to communicate over a sensor, or the steps needed to write a page of memory onto SPI Flash. You can include sub-sections for each of your component implementation.
Bluetooth master - slave configuration and driver implementation
The thumb joystick communicates with LPC408x controller via two ADC pins.
Thumb Joystick - SJTwo Board interface
The thumb joystick communicates with LPC408x controller via two ADC pins. The joystick provides two outputs: X-axis and Y-axis. The X-axis output (joystick) was connected to pin P0.25 (ADC2) and Y-axis output (joystick) to pin P0.26 (ADC3) of the micro controller. For player spaceship bullet firing the thumb joystick had a built-in button that was used. Based on the input readings a threshold level was defined. The corresponding enum was sent via Bluetooth to the receiver controller.
ADC initializing steps -
void adc__initialize_alien(void) { Turn ON ADC peripheral; make ADC operational; set ADC clock; Set Pin functions; select ADC channels; start burst mode; }
Threshold range for different joystick movements -
if (bullet_flag == true) { data = 9; bullet_flag = false; } else if (missile_flag == true) { data = 10; missile_flag = false; } else if ((value_x > 150 && value_x < 230) && (value_y > 150 && value_y < 230)) data = 0; // center else if ((value_x < 150) && (value_y > 150 && value_y < 230)) data = 3; // left else if ((value_x > 240) && (value_y > 150 && value_y < 230)) data = 4; // right else if ((value_x > 150 && value_x < 230) && (value_y < 150)) data = 1; // down else if ((value_x > 150 && value_x < 230) && (value_y > 240)) data = 2; // up else if ((value_x > 320) && (value_y > 320)) data = 5; // right up diagonal else if ((value_x > 310) && (value_y < 50)) data = 6; // right down diagonal else if ((value_x < 100) && (value_y > 290)) data = 7; // left up diagonal else if ((value_x < 50) && (value_y < 50)) data = 8; // left down diagonal
Testing & Technical Challenges
This section includes information about testing and the technical challenges we faced while developing this project
- Technical Challenges
- Flickering of data
- Bluetooth master - slave configuration
Conclusion
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Project Video
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Project Source Code
References
Acknowledgement
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References Used
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Appendix
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