Published July 27, 2017 © GPL3+

Space Invaders

A classic arcade game built using two TI microcontrollers.

IntermediateShowcase (no instructions)7 hours1,412

Things used in this project

Hardware components

Texas Instruments TM4C Microcontroller

Breadboard (generic)

SparkFun Pushbutton switch 12mm

Sitronix ST7735R 18-bit color 1.8" TFT LCD display

Resistor 10k ohm

Resistor 1k ohm

Jumper wires (generic)

3.5 MM AUDIO JACK

Low Profile Slide Potentiometer

Software apps and online services

Arm KEIl IDE

Story

Background

Space Invaders was programmed in C. The game was built for an embedded systems course at the University of Texas at Austin. It utilizes concepts like structs, interrupts, synchronization, digital to analog conversion, analog to digital conversion, and UART communication. The game includes sound and a multi-player mode. In single player, the player must defeat the enemy sprites in three distinctive waves before they lose all their lives.

This project

The design for the game was done in a modular fashion. Some of the most important units include collision detection, interrupt processing, sprite movement, and sprite generation. The game includes a score and lives display.

A brief glimpse at gameplay

Collision Detection

for(l = 0; l<150; l++){
  for(m = 0; m<num_aliens; m++){
	  if(((Missile1[l].y -13) <  Enemy1[m].y)){
		 if(((Missile1[l].y-13) > (Enemy1[m].y -10))){
		  if((Missile1[l].x) > Enemy1[m].x & Missile1[l].x < (Enemy1[m].x + 16)){
			 if(Missile1[l].x != -1 & Missile1[l].y != -1 & Enemy1[m].x != -1 & Enemy1[m].y != -1){
				  DisableInterrupts();
					Missile1[l].x = -1;
					Missile1[l].y = -1;
					Enemy1[m].x = -1;
					Enemy1[m].y = -1;
				  player1.score++;
					ST7735_FillScreen(0x0000); 
					EnableInterrupts();
				  Timer1_Init(&Sound_Killed, 7256);
					}
				}
			}
		}
	}
}

Credits

Rohan Balaji

0 projects • 5 followers

Student at The University of Texas at Austin

Contact

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Space Invaders

Things used in this project

Hardware components

Software apps and online services

Story

Background

This project

Code

Collision Detection

Github Repo for Main C Code

Credits

Rohan Balaji

Comments

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Space Invaders

Space Invaders

Things used in this project

Hardware components

Software apps and online services

Story

Background

This project

Code

Collision Detection

Github Repo for Main C Code

Credits

Rohan Balaji

Comments

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