ELEC2645 (2017/18) / Mbed OS el16ajm

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main.cpp@16:4d329ce7b156, 2018-05-08 (annotated)

Committer:
Andrew_M
Date:
Tue May 08 14:41:56 2018 +0000
Revision:
16:4d329ce7b156
Parent:
15:130900e5c268 
Added testing functions, found and fixed an error in the food placement (double Y cor not X and Y)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Andrew_M 0:66e5b37c127e 1 /*
Andrew_M 0:66e5b37c127e 2 ELEC2645 Embedded Systems Project
Andrew_M 0:66e5b37c127e 3 School of Electronic & Electrical Engineering
Andrew_M 0:66e5b37c127e 4 University of Leeds
Andrew_M 2:9ca5e1c221c3 5 Name: Andrew Moore
Andrew_M 2:9ca5e1c221c3 6 Username: el16ajm
Andrew_M 2:9ca5e1c221c3 7 Student ID Number: 201042893
Andrew_M 8:9d01fd4a63ad 8 Date:
Andrew_M 0:66e5b37c127e 9 */
Andrew_M 0:66e5b37c127e 10
Andrew_M 14:a57a40ff9430 11 /** The Main class
Andrew_M 14:a57a40ff9430 12 * @brief Sends and recives data from the Menu and Engine classes, alters the refresh rate and calls all drawing from other classes
Andrew_M 14:a57a40ff9430 13 * @author Andrew J. Moore
Andrew_M 14:a57a40ff9430 14 * @date May, 2018
Andrew_M 14:a57a40ff9430 15 */
Andrew_M 14:a57a40ff9430 16
Andrew_M 0:66e5b37c127e 17 #include "mbed.h"
Andrew_M 1:a14415de3ad5 18 #include "Gamepad.h"
Andrew_M 1:a14415de3ad5 19 #include "N5110.h"
Andrew_M 1:a14415de3ad5 20 #include "Engine.h"
Andrew_M 9:fe86ddbf7799 21 #include "Menu.h"
Andrew_M 0:66e5b37c127e 22
Andrew_M 1:a14415de3ad5 23 /////////////// structs /////////////////
Andrew_M 1:a14415de3ad5 24 struct UserInput {
Andrew_M 1:a14415de3ad5 25 Direction d;
Andrew_M 1:a14415de3ad5 26 };
Andrew_M 1:a14415de3ad5 27
Andrew_M 1:a14415de3ad5 28 /////////////// objects ///////////////
Andrew_M 1:a14415de3ad5 29 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);
Andrew_M 1:a14415de3ad5 30 Gamepad pad;
Andrew_M 1:a14415de3ad5 31 Engine gameEngine;
Andrew_M 9:fe86ddbf7799 32 Menu mainMenu;
Andrew_M 0:66e5b37c127e 33
Andrew_M 1:a14415de3ad5 34 ///////////// prototypes ///////////////
Andrew_M 14:a57a40ff9430 35 /** Initialization function */
Andrew_M 1:a14415de3ad5 36 void init();
Andrew_M 14:a57a40ff9430 37
Andrew_M 14:a57a40ff9430 38 /** Initialization function */
Andrew_M 1:a14415de3ad5 39 void update_game(UserInput input);
Andrew_M 14:a57a40ff9430 40
Andrew_M 14:a57a40ff9430 41 /** Draws the game onto the LCD */
Andrew_M 9:fe86ddbf7799 42 void renderGame();
Andrew_M 14:a57a40ff9430 43
Andrew_M 14:a57a40ff9430 44 /** Draws the menu onto the LCD */
Andrew_M 9:fe86ddbf7799 45 void renderMenu();
Andrew_M 14:a57a40ff9430 46
Andrew_M 14:a57a40ff9430 47 /** Draws the welcome screen onto the LCD */
Andrew_M 1:a14415de3ad5 48 void welcome();
Andrew_M 14:a57a40ff9430 49
Andrew_M 14:a57a40ff9430 50 /** Draws the transition screen onto the LCD */
Andrew_M 10:279d3775d52c 51 void transition();
Andrew_M 14:a57a40ff9430 52
Andrew_M 14:a57a40ff9430 53 /** Resets game and menu logic once a game over state has been reached */
Andrew_M 12:d3eef5ea3f43 54 void reset();
Andrew_M 14:a57a40ff9430 55
Andrew_M 14:a57a40ff9430 56 /** Sets the difficulty/refresh rate */
Andrew_M 11:b25874e7efe4 57 float setDif();
Andrew_M 1:a14415de3ad5 58
Andrew_M 1:a14415de3ad5 59 ///////////// functions ////////////////
Andrew_M 1:a14415de3ad5 60 int main()
Andrew_M 10:279d3775d52c 61 {
Andrew_M 16:4d329ce7b156 62 printf("Loaded\n");
Andrew_M 1:a14415de3ad5 63 init();
Andrew_M 1:a14415de3ad5 64 welcome();
Andrew_M 8:9d01fd4a63ad 65
Andrew_M 10:279d3775d52c 66 transition();
Andrew_M 11:b25874e7efe4 67
Andrew_M 2:9ca5e1c221c3 68 // game loop - read input, update the game state and render the display
Andrew_M 2:9ca5e1c221c3 69 while (1) {
Andrew_M 10:279d3775d52c 70 if (!mainMenu.started()) { //menu logic and rendering
Andrew_M 10:279d3775d52c 71 mainMenu.read_input(pad);
Andrew_M 10:279d3775d52c 72 mainMenu.update();
Andrew_M 12:d3eef5ea3f43 73 gameEngine.setLvl(mainMenu.getLvl());
Andrew_M 10:279d3775d52c 74 renderMenu();
Andrew_M 12:d3eef5ea3f43 75 } else if (gameEngine.getGameOver()) { //resets the game once a game over state has been reached
Andrew_M 12:d3eef5ea3f43 76 gameEngine.gameOverScreen(lcd);
Andrew_M 12:d3eef5ea3f43 77 reset();
Andrew_M 10:279d3775d52c 78 } else { //game logic and rendering
Andrew_M 9:fe86ddbf7799 79 gameEngine.read_input(pad);
Andrew_M 9:fe86ddbf7799 80 gameEngine.update(pad);
Andrew_M 9:fe86ddbf7799 81 renderGame();
Andrew_M 9:fe86ddbf7799 82 }
Andrew_M 2:9ca5e1c221c3 83 }
Andrew_M 1:a14415de3ad5 84 }
Andrew_M 1:a14415de3ad5 85
Andrew_M 1:a14415de3ad5 86 void welcome()
Andrew_M 1:a14415de3ad5 87 {
Andrew_M 16:4d329ce7b156 88 printf("Welcome Screen\n");
Andrew_M 16:4d329ce7b156 89
Andrew_M 8:9d01fd4a63ad 90 lcd.printString(" Snake! ",0,1);
Andrew_M 1:a14415de3ad5 91 lcd.printString(" Press Start ",0,4);
Andrew_M 1:a14415de3ad5 92 lcd.refresh();
Andrew_M 8:9d01fd4a63ad 93
Andrew_M 8:9d01fd4a63ad 94 // wait flashing LEDs until start button is pressed
Andrew_M 1:a14415de3ad5 95 while ( pad.check_event(Gamepad::START_PRESSED) == false) {
Andrew_M 1:a14415de3ad5 96 pad.leds_on();
Andrew_M 1:a14415de3ad5 97 wait(0.1);
Andrew_M 1:a14415de3ad5 98 pad.leds_off();
Andrew_M 1:a14415de3ad5 99 wait(0.1);
Andrew_M 0:66e5b37c127e 100 }
Andrew_M 15:130900e5c268 101 wait(0.1);
Andrew_M 9:fe86ddbf7799 102
Andrew_M 0:66e5b37c127e 103 }
Andrew_M 0:66e5b37c127e 104
Andrew_M 1:a14415de3ad5 105 void init()
Andrew_M 1:a14415de3ad5 106 {
Andrew_M 8:9d01fd4a63ad 107 // need to initialise LCD and Gamepad
Andrew_M 3:6253a2d374fa 108 gameEngine.init();
Andrew_M 1:a14415de3ad5 109 lcd.init();
Andrew_M 8:9d01fd4a63ad 110 pad.init();
Andrew_M 9:fe86ddbf7799 111 mainMenu.init();
Andrew_M 16:4d329ce7b156 112
Andrew_M 16:4d329ce7b156 113 printf("Initialised\n");
Andrew_M 1:a14415de3ad5 114
Andrew_M 1:a14415de3ad5 115 }
Andrew_M 2:9ca5e1c221c3 116
Andrew_M 12:d3eef5ea3f43 117 void reset()
Andrew_M 12:d3eef5ea3f43 118 {
Andrew_M 15:130900e5c268 119 mainMenu.init(); //resets both the mainMenu and gameEngine
Andrew_M 15:130900e5c268 120 gameEngine.init(); //the gameEngine will reset the food and the snake in the process
Andrew_M 16:4d329ce7b156 121
Andrew_M 16:4d329ce7b156 122 printf("Reset\n");
Andrew_M 12:d3eef5ea3f43 123 }
Andrew_M 12:d3eef5ea3f43 124
Andrew_M 9:fe86ddbf7799 125 void renderGame()
Andrew_M 2:9ca5e1c221c3 126 {
Andrew_M 2:9ca5e1c221c3 127 // clear screen, re-draw and refresh
Andrew_M 8:9d01fd4a63ad 128 lcd.clear();
Andrew_M 2:9ca5e1c221c3 129 gameEngine.draw(lcd);
Andrew_M 2:9ca5e1c221c3 130 lcd.refresh();
Andrew_M 15:130900e5c268 131 wait(setDif()); //adaptive fps depending on difficulty
Andrew_M 16:4d329ce7b156 132
Andrew_M 16:4d329ce7b156 133 printf("Game Rending\n");
Andrew_M 2:9ca5e1c221c3 134 }
Andrew_M 8:9d01fd4a63ad 135
Andrew_M 9:fe86ddbf7799 136 void renderMenu()
Andrew_M 9:fe86ddbf7799 137 {
Andrew_M 9:fe86ddbf7799 138 // clear screen, re-draw and refresh
Andrew_M 9:fe86ddbf7799 139 lcd.clear();
Andrew_M 9:fe86ddbf7799 140 mainMenu.draw(lcd);
Andrew_M 9:fe86ddbf7799 141 lcd.refresh();
Andrew_M 15:130900e5c268 142 wait(1.0f/8); //fixed at 8 fps
Andrew_M 16:4d329ce7b156 143
Andrew_M 16:4d329ce7b156 144 printf("Menu Rending\n");
Andrew_M 9:fe86ddbf7799 145 }
Andrew_M 9:fe86ddbf7799 146
Andrew_M 10:279d3775d52c 147 void transition()
Andrew_M 11:b25874e7efe4 148 {
Andrew_M 15:130900e5c268 149 //transition animation between modes to reduce 'ghosting' of inputs
Andrew_M 15:130900e5c268 150
Andrew_M 16:4d329ce7b156 151 printf("Transisitoning\n");
Andrew_M 16:4d329ce7b156 152
Andrew_M 15:130900e5c268 153 for (int i = 0; i <= 11; i++) { //max values for i and j were chosen as the screen is 84x44 and the sqaures being drawn are 4x4
Andrew_M 10:279d3775d52c 154 for (int j = 0; j <= 21; j++) {
Andrew_M 15:130900e5c268 155 lcd.drawRect(j*4,i*4,4,4,FILL_BLACK); //covers the entire screen in 4x4 squares
Andrew_M 15:130900e5c268 156 wait(0.005); //waits a small amount of time to allow the screen to keep up
Andrew_M 10:279d3775d52c 157 lcd.refresh();
Andrew_M 10:279d3775d52c 158 }
Andrew_M 10:279d3775d52c 159 }
Andrew_M 10:279d3775d52c 160
Andrew_M 10:279d3775d52c 161 }
Andrew_M 10:279d3775d52c 162
Andrew_M 11:b25874e7efe4 163 float setDif()
Andrew_M 11:b25874e7efe4 164 {
Andrew_M 11:b25874e7efe4 165 int _dif = mainMenu.getDif();
Andrew_M 11:b25874e7efe4 166
Andrew_M 15:130900e5c268 167 if (_dif == 1) { //Low difficulty
Andrew_M 11:b25874e7efe4 168 return 1.0f/4;
Andrew_M 15:130900e5c268 169 } else if (_dif == 2) { //Medium difficulty
Andrew_M 11:b25874e7efe4 170 return 1.0f/8;
Andrew_M 15:130900e5c268 171 } else if (_dif == 3) { //Hard difficulty
Andrew_M 11:b25874e7efe4 172 return 1.0f/12;
Andrew_M 15:130900e5c268 173 } else { //Adaptive difficulty
Andrew_M 13:81573be8fac6 174 float _delta = gameEngine.getScore();
Andrew_M 16:4d329ce7b156 175
Andrew_M 16:4d329ce7b156 176 printf("Delta %4.2f\n", _delta);
Andrew_M 16:4d329ce7b156 177
Andrew_M 15:130900e5c268 178 if (_delta < 25) { //Limits FPS to 25
Andrew_M 15:130900e5c268 179 return ((1.0f/(_delta + 1))); //changes the fps depending on score
Andrew_M 11:b25874e7efe4 180 } else {
Andrew_M 11:b25874e7efe4 181 return (1.0f/25);
Andrew_M 11:b25874e7efe4 182 }
Andrew_M 11:b25874e7efe4 183 }
Andrew_M 11:b25874e7efe4 184 }