ELEC2645 (2017/18) / Mbed OS el16ajm

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main.cpp@12:d3eef5ea3f43, 2018-05-07 (annotated)

Committer:
Andrew_M
Date:
Mon May 07 18:06:50 2018 +0000
Revision:
12:d3eef5ea3f43
Parent:
11:b25874e7efe4
Child:
13:81573be8fac6
Functional level select system with 3 different levels, sprite added to main menu for decoration. Minor reorganising within classes was needed, mainly game engine

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 0:66e5b37c127e 11 #include "mbed.h"
Andrew_M 1:a14415de3ad5 12 #include "Gamepad.h"
Andrew_M 1:a14415de3ad5 13 #include "N5110.h"
Andrew_M 1:a14415de3ad5 14 #include "Engine.h"
Andrew_M 9:fe86ddbf7799 15 #include "Menu.h"
Andrew_M 0:66e5b37c127e 16
Andrew_M 1:a14415de3ad5 17 /////////////// structs /////////////////
Andrew_M 1:a14415de3ad5 18 struct UserInput {
Andrew_M 1:a14415de3ad5 19 Direction d;
Andrew_M 1:a14415de3ad5 20 };
Andrew_M 1:a14415de3ad5 21
Andrew_M 1:a14415de3ad5 22 /////////////// objects ///////////////
Andrew_M 1:a14415de3ad5 23 N5110 lcd(PTC9,PTC0,PTC7,PTD2,PTD1,PTC11);
Andrew_M 1:a14415de3ad5 24 Gamepad pad;
Andrew_M 1:a14415de3ad5 25 Engine gameEngine;
Andrew_M 9:fe86ddbf7799 26 Menu mainMenu;
Andrew_M 0:66e5b37c127e 27
Andrew_M 1:a14415de3ad5 28 ///////////// prototypes ///////////////
Andrew_M 1:a14415de3ad5 29 void init();
Andrew_M 1:a14415de3ad5 30 void update_game(UserInput input);
Andrew_M 9:fe86ddbf7799 31 void renderGame();
Andrew_M 9:fe86ddbf7799 32 void renderMenu();
Andrew_M 1:a14415de3ad5 33 void welcome();
Andrew_M 10:279d3775d52c 34 void transition();
Andrew_M 12:d3eef5ea3f43 35 void reset();
Andrew_M 11:b25874e7efe4 36 float setDif();
Andrew_M 1:a14415de3ad5 37
Andrew_M 1:a14415de3ad5 38 ///////////// functions ////////////////
Andrew_M 1:a14415de3ad5 39 int main()
Andrew_M 10:279d3775d52c 40 {
Andrew_M 1:a14415de3ad5 41 init();
Andrew_M 1:a14415de3ad5 42 welcome();
Andrew_M 8:9d01fd4a63ad 43
Andrew_M 10:279d3775d52c 44 transition();
Andrew_M 11:b25874e7efe4 45
Andrew_M 2:9ca5e1c221c3 46 // game loop - read input, update the game state and render the display
Andrew_M 2:9ca5e1c221c3 47 while (1) {
Andrew_M 10:279d3775d52c 48 if (!mainMenu.started()) { //menu logic and rendering
Andrew_M 10:279d3775d52c 49 mainMenu.read_input(pad);
Andrew_M 10:279d3775d52c 50 mainMenu.update();
Andrew_M 12:d3eef5ea3f43 51 gameEngine.setLvl(mainMenu.getLvl());
Andrew_M 10:279d3775d52c 52 renderMenu();
Andrew_M 12:d3eef5ea3f43 53 } else if (gameEngine.getGameOver()) { //resets the game once a game over state has been reached
Andrew_M 12:d3eef5ea3f43 54 gameEngine.gameOverScreen(lcd);
Andrew_M 12:d3eef5ea3f43 55 reset();
Andrew_M 10:279d3775d52c 56 } else { //game logic and rendering
Andrew_M 9:fe86ddbf7799 57 gameEngine.read_input(pad);
Andrew_M 9:fe86ddbf7799 58 gameEngine.update(pad);
Andrew_M 9:fe86ddbf7799 59 renderGame();
Andrew_M 9:fe86ddbf7799 60 }
Andrew_M 2:9ca5e1c221c3 61 }
Andrew_M 1:a14415de3ad5 62 }
Andrew_M 1:a14415de3ad5 63
Andrew_M 1:a14415de3ad5 64 void welcome()
Andrew_M 1:a14415de3ad5 65 {
Andrew_M 8:9d01fd4a63ad 66 lcd.printString(" Snake! ",0,1);
Andrew_M 1:a14415de3ad5 67 lcd.printString(" Press Start ",0,4);
Andrew_M 1:a14415de3ad5 68 lcd.refresh();
Andrew_M 8:9d01fd4a63ad 69
Andrew_M 8:9d01fd4a63ad 70 // wait flashing LEDs until start button is pressed
Andrew_M 1:a14415de3ad5 71 while ( pad.check_event(Gamepad::START_PRESSED) == false) {
Andrew_M 1:a14415de3ad5 72 pad.leds_on();
Andrew_M 1:a14415de3ad5 73 wait(0.1);
Andrew_M 1:a14415de3ad5 74 pad.leds_off();
Andrew_M 1:a14415de3ad5 75 wait(0.1);
Andrew_M 0:66e5b37c127e 76 }
Andrew_M 9:fe86ddbf7799 77
Andrew_M 0:66e5b37c127e 78 }
Andrew_M 0:66e5b37c127e 79
Andrew_M 1:a14415de3ad5 80 void init()
Andrew_M 1:a14415de3ad5 81 {
Andrew_M 8:9d01fd4a63ad 82 // need to initialise LCD and Gamepad
Andrew_M 3:6253a2d374fa 83 gameEngine.init();
Andrew_M 1:a14415de3ad5 84 lcd.init();
Andrew_M 8:9d01fd4a63ad 85 pad.init();
Andrew_M 9:fe86ddbf7799 86 mainMenu.init();
Andrew_M 1:a14415de3ad5 87
Andrew_M 1:a14415de3ad5 88 }
Andrew_M 2:9ca5e1c221c3 89
Andrew_M 12:d3eef5ea3f43 90 void reset()
Andrew_M 12:d3eef5ea3f43 91 {
Andrew_M 12:d3eef5ea3f43 92 mainMenu.init();
Andrew_M 12:d3eef5ea3f43 93 gameEngine.init();
Andrew_M 12:d3eef5ea3f43 94 }
Andrew_M 12:d3eef5ea3f43 95
Andrew_M 9:fe86ddbf7799 96 void renderGame()
Andrew_M 2:9ca5e1c221c3 97 {
Andrew_M 2:9ca5e1c221c3 98 // clear screen, re-draw and refresh
Andrew_M 8:9d01fd4a63ad 99 lcd.clear();
Andrew_M 2:9ca5e1c221c3 100 gameEngine.draw(lcd);
Andrew_M 2:9ca5e1c221c3 101 lcd.refresh();
Andrew_M 11:b25874e7efe4 102 wait(setDif());
Andrew_M 2:9ca5e1c221c3 103 }
Andrew_M 8:9d01fd4a63ad 104
Andrew_M 9:fe86ddbf7799 105 void renderMenu()
Andrew_M 9:fe86ddbf7799 106 {
Andrew_M 9:fe86ddbf7799 107 // clear screen, re-draw and refresh
Andrew_M 9:fe86ddbf7799 108 lcd.clear();
Andrew_M 9:fe86ddbf7799 109 mainMenu.draw(lcd);
Andrew_M 9:fe86ddbf7799 110 lcd.refresh();
Andrew_M 9:fe86ddbf7799 111 wait(1.0f/8);
Andrew_M 9:fe86ddbf7799 112 }
Andrew_M 9:fe86ddbf7799 113
Andrew_M 10:279d3775d52c 114 void transition()
Andrew_M 11:b25874e7efe4 115 {
Andrew_M 11:b25874e7efe4 116 //transition animation between modes to stop 'ghosting' of inputs
Andrew_M 10:279d3775d52c 117 for (int i = 0; i <= 11; i++) {
Andrew_M 10:279d3775d52c 118 for (int j = 0; j <= 21; j++) {
Andrew_M 10:279d3775d52c 119 lcd.drawRect(j*4,i*4,4,4,FILL_BLACK);
Andrew_M 10:279d3775d52c 120 wait(0.005);
Andrew_M 10:279d3775d52c 121 lcd.refresh();
Andrew_M 10:279d3775d52c 122 }
Andrew_M 10:279d3775d52c 123 }
Andrew_M 10:279d3775d52c 124
Andrew_M 10:279d3775d52c 125 }
Andrew_M 10:279d3775d52c 126
Andrew_M 11:b25874e7efe4 127 float setDif()
Andrew_M 11:b25874e7efe4 128 {
Andrew_M 11:b25874e7efe4 129 int _dif = mainMenu.getDif();
Andrew_M 11:b25874e7efe4 130
Andrew_M 11:b25874e7efe4 131 if (_dif == 1) {
Andrew_M 11:b25874e7efe4 132 return 1.0f/4;
Andrew_M 11:b25874e7efe4 133 } else if (_dif == 2) {
Andrew_M 11:b25874e7efe4 134 return 1.0f/8;
Andrew_M 11:b25874e7efe4 135 } else if (_dif == 3) {
Andrew_M 11:b25874e7efe4 136 return 1.0f/12;
Andrew_M 12:d3eef5ea3f43 137 } else if (_dif == 4) {
Andrew_M 11:b25874e7efe4 138 int _delta = gameEngine.getScore();
Andrew_M 11:b25874e7efe4 139 if (_delta < 38) {
Andrew_M 11:b25874e7efe4 140 return ((1.0f/(_delta/2)) + 6);
Andrew_M 11:b25874e7efe4 141 } else {
Andrew_M 11:b25874e7efe4 142 return (1.0f/25);
Andrew_M 11:b25874e7efe4 143 }
Andrew_M 11:b25874e7efe4 144 }
Andrew_M 11:b25874e7efe4 145 return 1.0f;
Andrew_M 11:b25874e7efe4 146 }