James Cummins / Mbed 2 deprecated el17jnc

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Dependencies:   mbed

BrickBreaker_Engine/BrickBreakerEngine.cpp@38:a85bc227b907, 2019-05-09 (annotated)

Committer:
JamesCummins
Date:
Thu May 09 01:09:18 2019 +0000
Revision:
38:a85bc227b907
Parent:
35:138ad0faa42b 
Doxygen documentation written out and in line commenting completed. Game working and finished. Tests.h still to write out

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JamesCummins 20:4a39a1a2be51 1 #include "BrickBreakerEngine.h"
JamesCummins 20:4a39a1a2be51 2
JamesCummins 20:4a39a1a2be51 3 //Constructor
JamesCummins 20:4a39a1a2be51 4 BrickBreakerEngine::BrickBreakerEngine(){
JamesCummins 20:4a39a1a2be51 5 }
JamesCummins 20:4a39a1a2be51 6
JamesCummins 20:4a39a1a2be51 7 //Destructor
JamesCummins 20:4a39a1a2be51 8 BrickBreakerEngine::~BrickBreakerEngine(){
JamesCummins 20:4a39a1a2be51 9 }
JamesCummins 20:4a39a1a2be51 10
JamesCummins 20:4a39a1a2be51 11 //Initialiser
JamesCummins 23:61fa82f76808 12 void BrickBreakerEngine::init(int radius, Ball &ball){
JamesCummins 20:4a39a1a2be51 13 _ball_radius = radius;
JamesCummins 23:61fa82f76808 14 ball.init(_ball_radius);
JamesCummins 38:a85bc227b907 15 srand(time(NULL)); //first square will be the same each time
JamesCummins 38:a85bc227b907 16 _square_coord.x = 2 + rand()%80; //but is randomly generated by random noise thereafter
JamesCummins 20:4a39a1a2be51 17 _square_coord.y = 8 + rand()%36;
JamesCummins 20:4a39a1a2be51 18 }
JamesCummins 20:4a39a1a2be51 19
JamesCummins 20:4a39a1a2be51 20 /////////////Brickbreaker functionality/////////////////////
JamesCummins 20:4a39a1a2be51 21
JamesCummins 38:a85bc227b907 22 void BrickBreakerEngine::brickbreaker_draw(N5110 &lcd, Ball &ball){
JamesCummins 38:a85bc227b907 23 ball.draw(lcd); //draw ball
JamesCummins 38:a85bc227b907 24 lcd.drawRect(_square_coord.x, _square_coord.y, 5, 5, FILL_BLACK); //draw randomly generated square
JamesCummins 38:a85bc227b907 25 print_score(lcd); //draw score in corner
JamesCummins 38:a85bc227b907 26 }
JamesCummins 38:a85bc227b907 27
JamesCummins 25:b52aa23df120 28 void BrickBreakerEngine::set_score(int score){
JamesCummins 38:a85bc227b907 29 _score = score; //used to initialise score upon restart
JamesCummins 25:b52aa23df120 30 }
JamesCummins 25:b52aa23df120 31
JamesCummins 20:4a39a1a2be51 32 void BrickBreakerEngine::generate_rand_square(AnalogIn &randnoise){
JamesCummins 38:a85bc227b907 33 int rand = randnoise.read_u16(); //noise on unconnected ADC channel expanded to 16 bit int
JamesCummins 38:a85bc227b907 34 Vector2D square_coords = {rand % 80, 8 + rand % 36}; //offset by 8 so it doesn't overlap the score
JamesCummins 38:a85bc227b907 35 _square_coord = square_coords; //update the square coordinates for rendering
JamesCummins 20:4a39a1a2be51 36 }
JamesCummins 20:4a39a1a2be51 37
JamesCummins 23:61fa82f76808 38 void BrickBreakerEngine::check_square_collision(AnalogIn &randnoise, Ball &ball){
JamesCummins 23:61fa82f76808 39 int radius = ball.get_radius();
JamesCummins 23:61fa82f76808 40 Vector2D position = ball.get_position();
JamesCummins 38:a85bc227b907 41 if (abs(position.x - (_square_coord.x + 2)) <= (radius + 2) and //adding 2 to square coords gives the centre of the square
JamesCummins 38:a85bc227b907 42 abs(position.y - (_square_coord.y + 2)) <= (radius + 2)) { // <= radius+2 checks that edges aren't touching rather than centres of each
JamesCummins 38:a85bc227b907 43 _score++; //increment score if collision
JamesCummins 38:a85bc227b907 44 generate_rand_square(randnoise); //generate new square
JamesCummins 20:4a39a1a2be51 45 }
JamesCummins 20:4a39a1a2be51 46 }
JamesCummins 20:4a39a1a2be51 47
JamesCummins 20:4a39a1a2be51 48 void BrickBreakerEngine::print_score(N5110 &lcd){
JamesCummins 20:4a39a1a2be51 49 char buffer[2];
JamesCummins 20:4a39a1a2be51 50 int score = _score;
JamesCummins 38:a85bc227b907 51 sprintf(buffer, "%d", score); //use sprintf so that a variable (rather than a constant) can be use in printString.
JamesCummins 38:a85bc227b907 52 lcd.printString(buffer, 72, 0); //print in top right corner of the screen
JamesCummins 20:4a39a1a2be51 53 }
JamesCummins 25:b52aa23df120 54
JamesCummins 26:0dc10374546f 55 void BrickBreakerEngine::read_high_scores(){
JamesCummins 38:a85bc227b907 56 FILE *fp; //open file stream
JamesCummins 38:a85bc227b907 57 fp = fopen("/sd/bbhighscores.txt", "r"); //open file for brickbreak high scores
JamesCummins 34:7e03391cb8a6 58
JamesCummins 34:7e03391cb8a6 59 if(fp == NULL){
JamesCummins 38:a85bc227b907 60 printf("Error: Could not open file"); //check successfully opened
JamesCummins 34:7e03391cb8a6 61 } else {
JamesCummins 34:7e03391cb8a6 62 int i = 0;
JamesCummins 38:a85bc227b907 63 rewind(fp); //return to start of file
JamesCummins 34:7e03391cb8a6 64
JamesCummins 38:a85bc227b907 65 while(fscanf(fp, "%d,%f", &_index_array[i], &_array_of_values[i]) != EOF){ //read into respective arrays while iterating through line by line
JamesCummins 38:a85bc227b907 66 i++; //increment which line of array to write into
JamesCummins 34:7e03391cb8a6 67 }
JamesCummins 38:a85bc227b907 68 fclose(fp); //close file stream
JamesCummins 26:0dc10374546f 69 }
JamesCummins 26:0dc10374546f 70 }
JamesCummins 26:0dc10374546f 71
JamesCummins 26:0dc10374546f 72 void BrickBreakerEngine::check_high_score(){
JamesCummins 26:0dc10374546f 73 read_high_scores();
JamesCummins 38:a85bc227b907 74 for(int i = 4; i >= 0; i--){ //quick algorithm to keep moving the current score
JamesCummins 38:a85bc227b907 75 if(_array_of_values[i] < _score){ //up the leaderboard until it reaches a score greater than itself
JamesCummins 35:138ad0faa42b 76 _array_of_values[i+1] = _array_of_values[i];
JamesCummins 38:a85bc227b907 77 _array_of_values[i] = _score; //note: requires the file to be initialised with dummy scores in descending order
JamesCummins 34:7e03391cb8a6 78 }
JamesCummins 38:a85bc227b907 79 } //produces updated array with the current score integrated into high scores if its a top 5 score
JamesCummins 26:0dc10374546f 80 }
JamesCummins 26:0dc10374546f 81
JamesCummins 26:0dc10374546f 82 void BrickBreakerEngine::write_high_scores(){
JamesCummins 26:0dc10374546f 83 check_high_score();
JamesCummins 38:a85bc227b907 84 FILE *fp; //open file stream
JamesCummins 38:a85bc227b907 85 fp = fopen("/sd/bbhighscores.txt", "w"); //open brickbreaker high score file ready for writing
JamesCummins 34:7e03391cb8a6 86 if(fp == NULL){
JamesCummins 38:a85bc227b907 87 printf("Error: Could not open file"); //check open
JamesCummins 34:7e03391cb8a6 88 } else {
JamesCummins 38:a85bc227b907 89 for(int i = 0; i < 5; i++){
JamesCummins 38:a85bc227b907 90 fprintf(fp, "%d, %f\n", _index_array[i], _array_of_values[i]); //send first 5 values of index and value array to SD card
JamesCummins 34:7e03391cb8a6 91 }
JamesCummins 38:a85bc227b907 92 fclose(fp); //close file stream
JamesCummins 26:0dc10374546f 93 }
JamesCummins 32:eff573ad8e42 94 }
JamesCummins 32:eff573ad8e42 95
JamesCummins 32:eff573ad8e42 96 void BrickBreakerEngine::time_warning(Gamepad &gamepad, int frame, int fps){
JamesCummins 38:a85bc227b907 97 gamepad.leds_on(); //initially set all LEDs on
JamesCummins 32:eff573ad8e42 98 int game_length = 45 * fps;
JamesCummins 38:a85bc227b907 99 if(frame > 0.17 * game_length){ //when 1/6th of game played, turn first LED off
JamesCummins 32:eff573ad8e42 100 gamepad.led(6, 0);
JamesCummins 32:eff573ad8e42 101 }
JamesCummins 38:a85bc227b907 102 if(frame > 0.33 * game_length){ //when 1/3rd of game played, turn second LED off
JamesCummins 32:eff573ad8e42 103 gamepad.led(5, 0);
JamesCummins 32:eff573ad8e42 104 }
JamesCummins 38:a85bc227b907 105 if(frame > 0.5 * game_length){ //1/2 played, turn 3rd LED off
JamesCummins 32:eff573ad8e42 106 gamepad.led(4, 0);
JamesCummins 32:eff573ad8e42 107 }
JamesCummins 38:a85bc227b907 108 if(frame > 0.67 * game_length){ //2/3 played, turn 4th off
JamesCummins 32:eff573ad8e42 109 gamepad.led(3, 0);
JamesCummins 32:eff573ad8e42 110 }
JamesCummins 38:a85bc227b907 111 if(frame > 0.83 * game_length){ //5/6th played, turn 5th off
JamesCummins 32:eff573ad8e42 112 gamepad.led(2, 0);
JamesCummins 32:eff573ad8e42 113 }
JamesCummins 38:a85bc227b907 114 if(frame > 0.97 * game_length){ //turn final one off just before the game ends
JamesCummins 32:eff573ad8e42 115 gamepad.led(1, 0);
JamesCummins 32:eff573ad8e42 116 }
JamesCummins 32:eff573ad8e42 117 }
JamesCummins 32:eff573ad8e42 118
JamesCummins 32:eff573ad8e42 119 void BrickBreakerEngine::end(Gamepad &gamepad, N5110 &lcd){
JamesCummins 38:a85bc227b907 120 while(!(gamepad.check_event(gamepad.A_PRESSED))){ //check when user wants to advance
JamesCummins 32:eff573ad8e42 121 lcd.clear();
JamesCummins 32:eff573ad8e42 122 char buffer[2];
JamesCummins 38:a85bc227b907 123 sprintf(buffer, "%d", _score); //read the final score into buffer
JamesCummins 32:eff573ad8e42 124 lcd.printString("Time up!", 18, 1);
JamesCummins 38:a85bc227b907 125 lcd.printString("You scored:", 9, 3); //display time up message
JamesCummins 38:a85bc227b907 126 lcd.printString(buffer, 36, 4); //display final score
JamesCummins 38:a85bc227b907 127 lcd.printString("(A = back)", 24, 5); //check for advance message
JamesCummins 32:eff573ad8e42 128 lcd.refresh();
JamesCummins 38:a85bc227b907 129 wait(0.2); //longer duration between frames to reduce button bounce impact
JamesCummins 32:eff573ad8e42 130 }
JamesCummins 35:138ad0faa42b 131 }