ELEC2645 (2019/20) / Mbed 2 deprecated ELEC2645_Project_el17sdl_v2

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Dependencies:   mbed

GameEngine/GameEngine.cpp@14:4356797fd16e, 2020-05-24 (annotated)

Committer:
sdlashmar
Date:
Sun May 24 15:27:53 2020 +0000
Revision:
14:4356797fd16e
Parent:
13:4fa0d5148216 
FINISHED VERSION BEFORE TRYING TO IMPLEMENT TAIL COLLISION FUNCTION

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sdlashmar 7:c67a5c6a874f 1 #include "GameEngine.h"
sdlashmar 7:c67a5c6a874f 2
sdlashmar 7:c67a5c6a874f 3 GameEngine::GameEngine()
sdlashmar 7:c67a5c6a874f 4 {
sdlashmar 7:c67a5c6a874f 5
sdlashmar 7:c67a5c6a874f 6 }
sdlashmar 7:c67a5c6a874f 7
sdlashmar 7:c67a5c6a874f 8 GameEngine::~GameEngine()
sdlashmar 7:c67a5c6a874f 9 {
sdlashmar 7:c67a5c6a874f 10
sdlashmar 7:c67a5c6a874f 11 }
sdlashmar 7:c67a5c6a874f 12
sdlashmar 7:c67a5c6a874f 13 void GameEngine::init(int head_size, int head_speed)
sdlashmar 7:c67a5c6a874f 14 {
sdlashmar 14:4356797fd16e 15 //initial random coordinates for mouse spawn
sdlashmar 10:3958fb08696d 16 srand(time(NULL));
sdlashmar 14:4356797fd16e 17 _mouse_x = rand() %80+4;
sdlashmar 14:4356797fd16e 18 _mouse_y = rand() %44+4;
sdlashmar 14:4356797fd16e 19 //initialise parameters
sdlashmar 9:f0213e632379 20 _game_over = false;
sdlashmar 7:c67a5c6a874f 21 _score = 0;
sdlashmar 8:1e4182ebb063 22 _mouse = 0;
sdlashmar 11:c4b740a970f8 23 _length = 0;
sdlashmar 7:c67a5c6a874f 24 _head_size = head_size;
sdlashmar 7:c67a5c6a874f 25 _head_speed = head_speed;
sdlashmar 14:4356797fd16e 26 //initialise the head
sdlashmar 7:c67a5c6a874f 27 head.init(_head_size, _head_speed);
sdlashmar 7:c67a5c6a874f 28
sdlashmar 7:c67a5c6a874f 29 }
sdlashmar 7:c67a5c6a874f 30
sdlashmar 7:c67a5c6a874f 31 void GameEngine::read_input(Gamepad& pad)
sdlashmar 7:c67a5c6a874f 32 {
sdlashmar 14:4356797fd16e 33 //read direction from joystick
sdlashmar 7:c67a5c6a874f 34 _d = pad.get_direction();
sdlashmar 7:c67a5c6a874f 35 }
sdlashmar 7:c67a5c6a874f 36
sdlashmar 7:c67a5c6a874f 37 void GameEngine::update(Gamepad &pad, N5110 &lcd)
sdlashmar 7:c67a5c6a874f 38 {
sdlashmar 7:c67a5c6a874f 39 head.change_direction(_d);
sdlashmar 14:4356797fd16e 40 //need to make sure the current head position is stored before updating as this then becomes the previous head position for updating the snake tail
sdlashmar 11:c4b740a970f8 41 Vector2D prevHead = head.get_pos();
sdlashmar 14:4356797fd16e 42 //tail updated before head
sdlashmar 11:c4b740a970f8 43 tail.update(prevHead, _length);
sdlashmar 7:c67a5c6a874f 44 head.update();
sdlashmar 7:c67a5c6a874f 45 check_mouse_eaten(pad);
sdlashmar 7:c67a5c6a874f 46 check_wall_collision(pad, lcd);
sdlashmar 7:c67a5c6a874f 47 }
sdlashmar 7:c67a5c6a874f 48
sdlashmar 7:c67a5c6a874f 49 void GameEngine::draw(N5110 &lcd)
sdlashmar 7:c67a5c6a874f 50 {
sdlashmar 7:c67a5c6a874f 51 lcd.drawRect(0, 0, WIDTH, HEIGHT, FILL_TRANSPARENT);
sdlashmar 7:c67a5c6a874f 52 head.draw(lcd);
sdlashmar 11:c4b740a970f8 53 tail.draw(lcd, _length);
sdlashmar 11:c4b740a970f8 54
sdlashmar 10:3958fb08696d 55 spawn_mouse(lcd);
sdlashmar 7:c67a5c6a874f 56 }
sdlashmar 7:c67a5c6a874f 57
sdlashmar 7:c67a5c6a874f 58 void GameEngine::spawn_mouse(N5110 &lcd)
sdlashmar 7:c67a5c6a874f 59 {
sdlashmar 14:4356797fd16e 60 // draw the mouse from given x and y coordinates
sdlashmar 14:4356797fd16e 61 lcd.drawRect(_mouse_x, _mouse_y, 2, 2, FILL_BLACK);
sdlashmar 7:c67a5c6a874f 62 }
sdlashmar 7:c67a5c6a874f 63
sdlashmar 7:c67a5c6a874f 64 void GameEngine::check_mouse_eaten(Gamepad &pad)
sdlashmar 7:c67a5c6a874f 65 {
sdlashmar 7:c67a5c6a874f 66 Vector2D headPos = head.get_pos();
sdlashmar 7:c67a5c6a874f 67 int headX = headPos.x;
sdlashmar 7:c67a5c6a874f 68 int headY = headPos.y;
sdlashmar 11:c4b740a970f8 69 //printf("head x = %i\n", headX);
sdlashmar 11:c4b740a970f8 70 //printf("head y = %i\n", headY);
sdlashmar 14:4356797fd16e 71 //check if the head position is the same as the mouse position, if it is score increases by ten and new mouse coordinates generated
sdlashmar 10:3958fb08696d 72 if((headX == _mouse_x || headX == _mouse_x+1 || headX == _mouse_x-1) && (headY == _mouse_y || (headY == _mouse_y+1 || headY == _mouse_y-1))) {
sdlashmar 7:c67a5c6a874f 73 _score = _score + 10;
sdlashmar 9:f0213e632379 74 _mouse = 0;
sdlashmar 7:c67a5c6a874f 75 pad.tone(750.0, 0.1);
sdlashmar 10:3958fb08696d 76 srand(time(NULL));
sdlashmar 14:4356797fd16e 77 _mouse_x = rand() %80+4;
sdlashmar 14:4356797fd16e 78 _mouse_y = rand() %44+4;
sdlashmar 11:c4b740a970f8 79 _length++;
sdlashmar 7:c67a5c6a874f 80 }
sdlashmar 7:c67a5c6a874f 81 }
sdlashmar 7:c67a5c6a874f 82
sdlashmar 7:c67a5c6a874f 83 void GameEngine::check_wall_collision(Gamepad &pad, N5110 &lcd)
sdlashmar 7:c67a5c6a874f 84 {
sdlashmar 7:c67a5c6a874f 85 Vector2D headPos = head.get_pos();
sdlashmar 7:c67a5c6a874f 86 int headX = headPos.x;
sdlashmar 7:c67a5c6a874f 87 int headY = headPos.y;
sdlashmar 14:4356797fd16e 88 // checks if the snake head has it the wall, if it has then the game over function is run
sdlashmar 8:1e4182ebb063 89 if (headX < 0+2 || headX > WIDTH-3) {
sdlashmar 9:f0213e632379 90 _game_over = true;
sdlashmar 7:c67a5c6a874f 91 game_over(lcd, pad);
sdlashmar 7:c67a5c6a874f 92 }
sdlashmar 8:1e4182ebb063 93 if (headY < 0+2 || headY > HEIGHT-3) {
sdlashmar 9:f0213e632379 94 _game_over = true;
sdlashmar 7:c67a5c6a874f 95 game_over(lcd, pad);
sdlashmar 7:c67a5c6a874f 96 }
sdlashmar 7:c67a5c6a874f 97 }
sdlashmar 7:c67a5c6a874f 98
sdlashmar 7:c67a5c6a874f 99 void GameEngine::game_over(N5110 &lcd, Gamepad &pad)
sdlashmar 7:c67a5c6a874f 100 {
sdlashmar 7:c67a5c6a874f 101 pad.tone(NOTE_E5, 0.1);
sdlashmar 9:f0213e632379 102 wait(0.1);
sdlashmar 7:c67a5c6a874f 103 pad.tone(NOTE_D5, 0.1);
sdlashmar 9:f0213e632379 104 wait(0.1);
sdlashmar 7:c67a5c6a874f 105 pad.tone(NOTE_C5, 0.1);
sdlashmar 9:f0213e632379 106 while(_game_over == true){
sdlashmar 9:f0213e632379 107 lcd.clear();
sdlashmar 12:cb3a81adf48b 108 lcd.printString(" GAME OVER! ", 0, 0);
sdlashmar 7:c67a5c6a874f 109 char buffer[14];
sdlashmar 7:c67a5c6a874f 110 sprintf(buffer, "%2d", _score);
sdlashmar 9:f0213e632379 111 lcd.printString(" You scored: ", 2, 2);
sdlashmar 9:f0213e632379 112 lcd.printString(buffer, 8, 4);
sdlashmar 9:f0213e632379 113 lcd.refresh();
sdlashmar 9:f0213e632379 114 };
sdlashmar 7:c67a5c6a874f 115 }
sdlashmar 7:c67a5c6a874f 116
sdlashmar 7:c67a5c6a874f 117
sdlashmar 7:c67a5c6a874f 118