ELEC2645 (2019/20) / Mbed 2 deprecated ELEC2645_Project_el18rg

Rosie Gillman

Dependencies:   mbed Gamepad2 ELEC2645_Project_el18rg

Dependents:   ELEC2645_Project_el18rg

https://os.mbed.com/media/uploads/el18rg/bug_splat_logo.png

Rosemary Gillman 201265952

Objective

The goal of the game is to splat the bug as fast as you can using the swatter.

Controls

1 - Joystick - left/right to control the swatter 2 - Start button - starts the game 3 - Reset - resets the game 4 - Volume pot - adjusts the volume https://os.mbed.com/media/uploads/el18rg/buttons.png

Instructions

  1. Turn the gamepad on
  2. Wait for start screen and press start
  3. Move the joystick to control the swatter
  4. Splat the bug as fast as you can
  5. Press reset to play again

Gameplay

Start Screen 1

  • Low pad tone plays for 0.5s
  • Pad lights flash (200ms on/200ms off)
  • Text saying "Bug Splat Leeds Edition" is displayed
  • After 5 flashes the screen changes to Start Screen 2

https://os.mbed.com/media/uploads/el18rg/intro_screen1.jpg

Start Screen 2

  • Pad lights stay on constantly
  • Text reads "Splat the bug as fast as you can! Press start"
  • When start is pressed the screen changes to Gamplay Screen

https://os.mbed.com/media/uploads/el18rg/intro_screen_2.jpg

Gameplay Screen

  • The timer begins
  • Bug appears in the top right corner
  • Swatter appears in the bottom left corner
  • The bug bounces (with random velocity/direction) off the sides
  • When the bug bounces off the wall a low pad tone is played each time for 0.1 seconds
  • Swatter is controlled left to right with the joystick
  • When the bug and swatter overlap the screen changes to the Ending Screen

https://os.mbed.com/media/uploads/el18rg/gameplay.jpg

Ending Screen

  • Low pad tone plays for 0.5s
  • The timer ends and its value is displayed
  • Text reads "SPLAT (time) secs"
  • Splats are drawn on the screen https://os.mbed.com/media/uploads/el18rg/end_screen.jpg

Engine/Engine.cpp@22:0b207694a5f7, 2020-05-29 (annotated)

Committer:
el18rg
Date:
Fri May 29 21:31:43 2020 +0000
Revision:
22:0b207694a5f7
Parent:
19:bdfab290446a 
Final check through

Who changed what in which revision?

UserRevisionLine numberNew contents of line
el18rg 2:b936aa854de2 1 #include "Engine.h"
el18rg 2:b936aa854de2 2 #include "mbed.h"
el18rg 2:b936aa854de2 3 #include "Gamepad.h"
el18rg 2:b936aa854de2 4 #include "N5110.h"
el18rg 16:33d8b58a1a65 5 #include <ctime>
el18rg 2:b936aa854de2 6
el18rg 15:4ed54ff548cf 7 Engine::Engine() {} //Constuctor
el18rg 15:4ed54ff548cf 8 Engine::~Engine() {} //Destructor
el18rg 2:b936aa854de2 9
el18rg 15:4ed54ff548cf 10 void Engine::init(int swatter_width,int swatter_height,int speed) //initalises the game
el18rg 2:b936aa854de2 11 {
el18rg 19:bdfab290446a 12 width = swatter_width; //set width
el18rg 19:bdfab290446a 13 height = swatter_height; //set hight
el18rg 19:bdfab290446a 14 _speed = speed; //sets the speed
el18rg 22:0b207694a5f7 15 x = 2; //set x
el18rg 19:bdfab290446a 16 _swatter.init(x,height,width); //initialise the swatter with parameters
el18rg 19:bdfab290446a 17 _bug.init(_speed); //initilise the bug with speed
el18rg 2:b936aa854de2 18 }
el18rg 2:b936aa854de2 19
el18rg 15:4ed54ff548cf 20 void Engine::read_input(Gamepad &pad) //reads the direction and magnitude inputs
el18rg 2:b936aa854de2 21 {
el18rg 19:bdfab290446a 22 _d = pad.get_direction(); //gets the direction
el18rg 19:bdfab290446a 23 _mag = pad.get_mag(); //gets the magnitude
el18rg 2:b936aa854de2 24 }
el18rg 2:b936aa854de2 25
el18rg 15:4ed54ff548cf 26 void Engine::draw(N5110 &lcd) //draws the bug and swatter
el18rg 2:b936aa854de2 27 {
el18rg 19:bdfab290446a 28 _bug.draw(lcd); //draws the bug
el18rg 19:bdfab290446a 29 _swatter.draw(lcd); //draws the swatter
el18rg 2:b936aa854de2 30 }
el18rg 2:b936aa854de2 31
el18rg 15:4ed54ff548cf 32 void Engine::update(N5110 & lcd, Gamepad & pad) //updates the game
el18rg 2:b936aa854de2 33 {
el18rg 19:bdfab290446a 34 _swatter.update(_d,_mag); //updates the swatter with direction/magnitude
el18rg 19:bdfab290446a 35 _bug.update(); //updates the bug
el18rg 19:bdfab290446a 36 check_side_collision(pad); //checks side/bug collision
el18rg 19:bdfab290446a 37 check_swatter_collisions(lcd, pad); //checks swatter/bug collision
el18rg 2:b936aa854de2 38 }
el18rg 15:4ed54ff548cf 39 void Engine::check_side_collision(Gamepad &pad) //checks if the bug collides with the sides and redirects it
el18rg 2:b936aa854de2 40 {
el18rg 19:bdfab290446a 41 Vector2D bug_pos = _bug.get_pos(); //get the bug position
el18rg 19:bdfab290446a 42 Vector2D bug_velocity = _bug.get_velocity(); //get the bug velocity
el18rg 19:bdfab290446a 43 if (bug_pos.y <= 1) { //if the bug touches the top y-axis
el18rg 19:bdfab290446a 44 bug_pos.y = 1; //put the bug back inside the boundaries
el18rg 19:bdfab290446a 45 bug_velocity.y = -bug_velocity.y; //reverse the y velocity
el18rg 19:bdfab290446a 46 bug_velocity.x = rand() % 5 + 0; //bounce on the x-axis at a 0-5 random velocity
el18rg 19:bdfab290446a 47 pad.tone(750.0,0.1); //play a medium pad tone
el18rg 19:bdfab290446a 48 } else if (bug_pos.y + 10 >= (HEIGHT-1) ) { //if the bug touches the bottom y-axis
el18rg 19:bdfab290446a 49 bug_pos.y = (HEIGHT-1) - 10; //put the bug back inside the boundaries
el18rg 19:bdfab290446a 50 bug_velocity.y = -bug_velocity.y ; //reverse the y velocity
el18rg 19:bdfab290446a 51 bug_velocity.x = rand() % 5 + 0; //bounce on the x-axis at a 0-5 random velocity
el18rg 19:bdfab290446a 52 pad.tone(750.0,0.1); //play a medium pad tone
el18rg 4:5cc1b81999a9 53 }
el18rg 19:bdfab290446a 54 if (bug_pos.x <= 1) { //if the bug touches the left x-axis
el18rg 19:bdfab290446a 55 bug_pos.x = 1; //put the bug back inside the boundaries
el18rg 19:bdfab290446a 56 bug_velocity.x = -bug_velocity.x; //reverse the x velocity
el18rg 19:bdfab290446a 57 bug_velocity.y = rand() % 5 + 0; //bounce on the y-axis at a 0-5 random velocity
el18rg 19:bdfab290446a 58 pad.tone(750.0,0.1); //play a medium pad tone
el18rg 19:bdfab290446a 59 } else if (bug_pos.x + 10 >= (WIDTH-1) ) { //if the bug touches the right x-axis
el18rg 19:bdfab290446a 60 bug_pos.x = (WIDTH-1) - 10; //put the bug back inside the boundaries
el18rg 19:bdfab290446a 61 bug_velocity.x = -bug_velocity.x ; //reverse the x velocity
el18rg 19:bdfab290446a 62 bug_velocity.y = rand() % 5 + 0; //bounce on the y-axis at a 0-5 random velocity
el18rg 19:bdfab290446a 63 pad.tone(750.0,0.1); //play a medium pad tone
el18rg 2:b936aa854de2 64 }
el18rg 2:b936aa854de2 65
el18rg 19:bdfab290446a 66 _bug.set_velocity(bug_velocity); //set the bug velocity
el18rg 19:bdfab290446a 67 _bug.set_pos(bug_pos); //set the bug position
el18rg 2:b936aa854de2 68 }
el18rg 15:4ed54ff548cf 69 void Engine::check_swatter_collisions(N5110 & lcd, Gamepad & pad) //checks if the swatter and bug have collided
el18rg 2:b936aa854de2 70 {
el18rg 19:bdfab290446a 71 Vector2D bug_pos = _bug.get_pos(); //get bug position
el18rg 19:bdfab290446a 72 Vector2D p_pos = _swatter.get_pos(); //get swatter position
el18rg 19:bdfab290446a 73 Vector2D bug_velocity = _bug.get_velocity(); //get bug velocity
el18rg 13:09bc615e6665 74
el18rg 19:bdfab290446a 75 if ((bug_pos.x <= (p_pos.x +5)) && (bug_pos.x +5 >= p_pos.x)) { //check for x-axis collision
el18rg 3:2f4a7787beb3 76 collisionX=true;
el18rg 11:93da75c1849d 77 } else {
el18rg 3:2f4a7787beb3 78 collisionX=false;
el18rg 3:2f4a7787beb3 79 }
el18rg 19:bdfab290446a 80 if ((bug_pos.y <= (p_pos.y+5)) && (bug_pos.y+5 >= p_pos.y )) { //check for y-axis collision
el18rg 3:2f4a7787beb3 81 collisionY=true;
el18rg 11:93da75c1849d 82 } else {
el18rg 3:2f4a7787beb3 83 collisionY=false;
el18rg 2:b936aa854de2 84 }
el18rg 19:bdfab290446a 85 if (collisionX && collisionY) { //if there's a x and y-axis collision
el18rg 19:bdfab290446a 86 ending(lcd, pad); //run ending
el18rg 11:93da75c1849d 87 }
el18rg 2:b936aa854de2 88 }
el18rg 15:4ed54ff548cf 89 void Engine::timer() //starts the timer off
el18rg 13:09bc615e6665 90 {
el18rg 13:09bc615e6665 91 start = clock();
el18rg 13:09bc615e6665 92 }
el18rg 15:4ed54ff548cf 93 void Engine::ending(N5110 & lcd, Gamepad & pad) //runs end of the game sequence
el18rg 7:b5ef03efe784 94 {
el18rg 19:bdfab290446a 95 lcd.clear(); //clear lcd
el18rg 19:bdfab290446a 96 pad.leds_on(); //leds on
el18rg 19:bdfab290446a 97 pad.tone(500.0,0.5); //play low pad tone
el18rg 19:bdfab290446a 98 duration = clock() - start; //find duration of timer
el18rg 19:bdfab290446a 99 final = ((float)duration/CLOCKS_PER_SEC)/2; //change duration into seconds (final)
el18rg 19:bdfab290446a 100 char buffer[1]; //create buffer
el18rg 19:bdfab290446a 101 sprintf(buffer,"%.2f",final); //write value to buffer
el18rg 19:bdfab290446a 102 for (double i = 0; i < 100000; i += 0.1) { //for loop to keep the game stopped
el18rg 19:bdfab290446a 103 lcd.refresh(); //refresh lcd
el18rg 19:bdfab290446a 104 lcd.printString(buffer,20,1); //print time
el18rg 19:bdfab290446a 105 lcd.printString("secs",35,2); //print text
el18rg 19:bdfab290446a 106 _splat.draw(lcd); //draw splats
el18rg 7:b5ef03efe784 107 }
el18rg 7:b5ef03efe784 108 }