Jeffery Hurley / Mbed OS Asteroids

Simple starter skeleton for asteroids video game.

Dependencies:   PinDetect

main.cpp@5:454ff3197a74, 2021-04-01 (annotated)

Committer:
jhurley31
Date:
Thu Apr 01 20:09:47 2021 +0000
Revision:
5:454ff3197a74
Parent:
3:98aa3db6a48f 
Updating OS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jhurley31 0:0c450cb95a1e 1 #include "mbed.h"
jhurley31 2:30020ddfccf6 2 #include <stdio.h>
jhurley31 3:98aa3db6a48f 3 #include <ctime>
jhurley31 3:98aa3db6a48f 4 #include <cstdlib>
jhurley31 0:0c450cb95a1e 5 #include "Speaker.h"
jhurley31 0:0c450cb95a1e 6 #include "PinDetect.h"
jhurley31 1:a6872783beca 7 #include "uLCD_4DGL.h"
jhurley31 3:98aa3db6a48f 8 #include "CommandShip.h"
jhurley31 3:98aa3db6a48f 9 #include "Asteroid.h"
jhurley31 3:98aa3db6a48f 10
jhurley31 3:98aa3db6a48f 11
jhurley31 3:98aa3db6a48f 12 using namespace std;
jhurley31 3:98aa3db6a48f 13 #define GAME_PAUSED 0
jhurley31 3:98aa3db6a48f 14 #define GAME_RUNNING 1
jhurley31 3:98aa3db6a48f 15 #define GAME_OVER 2
jhurley31 3:98aa3db6a48f 16
jhurley31 3:98aa3db6a48f 17 #define NUM_ASTEROIDS 8
jhurley31 3:98aa3db6a48f 18
jhurley31 1:a6872783beca 19 ////////////////////////////////////////
jhurley31 1:a6872783beca 20 // Setup instance of LCD display
jhurley31 2:30020ddfccf6 21 uLCD_4DGL guLCD(p28, p27, p29); // serial tx, serial rx, reset pin;
jhurley31 1:a6872783beca 22 ////////////////////////////////////////
jhurley31 1:a6872783beca 23 // Setup instances of push button pins
jhurley31 2:30020ddfccf6 24 PinDetect gPB_left(p16);
jhurley31 2:30020ddfccf6 25 PinDetect gPB_right(p17);
jhurley31 3:98aa3db6a48f 26 PinDetect gPB_fire(p18);
jhurley31 3:98aa3db6a48f 27 // Create Ship and Asteriods
jhurley31 3:98aa3db6a48f 28 CommandShip gShip;
jhurley31 3:98aa3db6a48f 29 Asteroid gAsteroids[NUM_ASTEROIDS];
jhurley31 2:30020ddfccf6 30
jhurley31 3:98aa3db6a48f 31 // Variable indicates if game is paused or running
jhurley31 3:98aa3db6a48f 32 int gGameState = GAME_PAUSED;
jhurley31 3:98aa3db6a48f 33 // Declare and initialize the speaker
jhurley31 2:30020ddfccf6 34 Speaker gSpeakerOut(p21);
jhurley31 2:30020ddfccf6 35
jhurley31 3:98aa3db6a48f 36 // declare the gTimeStep
jhurley31 2:30020ddfccf6 37
jhurley31 3:98aa3db6a48f 38 double gTimeStep = 0.03;
jhurley31 3:98aa3db6a48f 39 int gNumLives = 3;
jhurley31 3:98aa3db6a48f 40
jhurley31 3:98aa3db6a48f 41 double gOriginX = 63.0;
jhurley31 3:98aa3db6a48f 42 double gOriginY = 63.0;
jhurley31 1:a6872783beca 43 //////////////////////////////////////////////////////////////////////
jhurley31 1:a6872783beca 44 // Interrupt routine
jhurley31 1:a6872783beca 45 // used to output next analog sample whenever a timer interrupt occurs
jhurley31 1:a6872783beca 46 void Sample_timer_interrupt(void)
jhurley31 1:a6872783beca 47 {
jhurley31 3:98aa3db6a48f 48 // Call speaker function to play next value
jhurley31 2:30020ddfccf6 49 gSpeakerOut.PlayNextValue();
jhurley31 1:a6872783beca 50 }
jhurley31 0:0c450cb95a1e 51 //---------------------------------------------------------------------------------------------------
jhurley31 0:0c450cb95a1e 52 // Callback routine is interrupt activated by a debounced pb_left hit
jhurley31 0:0c450cb95a1e 53 void pb_left_hit_callback (void)
jhurley31 0:0c450cb95a1e 54 {
jhurley31 3:98aa3db6a48f 55 // Update game state and tell ship to rotate to the left
jhurley31 3:98aa3db6a48f 56 if (gGameState == GAME_RUNNING)
jhurley31 3:98aa3db6a48f 57 {
jhurley31 3:98aa3db6a48f 58 gShip.rotateLeft();
jhurley31 3:98aa3db6a48f 59 }
jhurley31 3:98aa3db6a48f 60
jhurley31 3:98aa3db6a48f 61 gGameState = GAME_RUNNING;
jhurley31 3:98aa3db6a48f 62
jhurley31 0:0c450cb95a1e 63 }
jhurley31 0:0c450cb95a1e 64 //---------------------------------------------------------------------------------------------------
jhurley31 0:0c450cb95a1e 65 // Callback routine is interrupt activated by a debounced pb_right hit
jhurley31 0:0c450cb95a1e 66 void pb_right_hit_callback (void)
jhurley31 0:0c450cb95a1e 67 {
jhurley31 3:98aa3db6a48f 68 // Update game state and tell ship to rotate to the left
jhurley31 3:98aa3db6a48f 69 if (gGameState == GAME_RUNNING)
jhurley31 3:98aa3db6a48f 70 {
jhurley31 3:98aa3db6a48f 71
jhurley31 3:98aa3db6a48f 72 gShip.rotateRight();
jhurley31 3:98aa3db6a48f 73 }
jhurley31 3:98aa3db6a48f 74
jhurley31 3:98aa3db6a48f 75 gGameState = GAME_RUNNING;
jhurley31 3:98aa3db6a48f 76
jhurley31 1:a6872783beca 77 }
jhurley31 1:a6872783beca 78 //---------------------------------------------------------------------------------------------------
jhurley31 3:98aa3db6a48f 79 // Callback routine is interrupt activated by a debounced pb_fire hit
jhurley31 3:98aa3db6a48f 80 void pb_fire_hit_callback (void)
jhurley31 1:a6872783beca 81 {
jhurley31 3:98aa3db6a48f 82 // Update game state and tell ship to fire
jhurley31 3:98aa3db6a48f 83 if (gGameState == GAME_RUNNING)
jhurley31 3:98aa3db6a48f 84 {
jhurley31 3:98aa3db6a48f 85 gShip.fire();
jhurley31 3:98aa3db6a48f 86 }
jhurley31 3:98aa3db6a48f 87 gGameState = GAME_RUNNING;
jhurley31 0:0c450cb95a1e 88 }
jhurley31 3:98aa3db6a48f 89
jhurley31 0:0c450cb95a1e 90 //---------------------------------------------------------------------------------------------------
jhurley31 3:98aa3db6a48f 91
jhurley31 0:0c450cb95a1e 92 int main()
jhurley31 0:0c450cb95a1e 93 {
jhurley31 3:98aa3db6a48f 94
jhurley31 3:98aa3db6a48f 95 srand(static_cast<unsigned int>(time(0)));
jhurley31 3:98aa3db6a48f 96
jhurley31 2:30020ddfccf6 97 // Setup push buttons
jhurley31 2:30020ddfccf6 98 gPB_left.mode(PullUp);
jhurley31 2:30020ddfccf6 99 gPB_right.mode(PullUp);
jhurley31 3:98aa3db6a48f 100 gPB_fire.mode(PullUp);
jhurley31 1:a6872783beca 101 // Delay for initial pullup to take effect
jhurley31 1:a6872783beca 102 wait(.01);
jhurley31 1:a6872783beca 103 // Setup Interrupt callback functions for a pb hit
jhurley31 2:30020ddfccf6 104 gPB_left.attach_deasserted(&pb_left_hit_callback);
jhurley31 2:30020ddfccf6 105 gPB_right.attach_deasserted(&pb_right_hit_callback);
jhurley31 3:98aa3db6a48f 106 gPB_fire.attach_deasserted(&pb_fire_hit_callback);
jhurley31 3:98aa3db6a48f 107
jhurley31 1:a6872783beca 108 // Setup speaker
jhurley31 3:98aa3db6a48f 109 //gSpeakerOut.period(1.0/200000.0);
jhurley31 3:98aa3db6a48f 110 gSpeakerOut.period(1.0/100000.0);
jhurley31 2:30020ddfccf6 111 // set up a timer to be used for sample rate interrupts
jhurley31 2:30020ddfccf6 112 Ticker Sample_Period;
jhurley31 2:30020ddfccf6 113 Sample_Period.attach(&Sample_timer_interrupt, 1.0/(20000.0));
jhurley31 1:a6872783beca 114
jhurley31 1:a6872783beca 115 //Setup LCD display
jhurley31 3:98aa3db6a48f 116 guLCD.display_control(LANDSCAPE);
jhurley31 2:30020ddfccf6 117 guLCD.background_color(BLACK);
jhurley31 2:30020ddfccf6 118 guLCD.cls();
jhurley31 2:30020ddfccf6 119 guLCD.baudrate(BAUD_3000000); //jack up baud rate to max for fast display
jhurley31 1:a6872783beca 120 wait(1.0);
jhurley31 2:30020ddfccf6 121
jhurley31 1:a6872783beca 122 // Start sampling pb inputs using interrupts
jhurley31 2:30020ddfccf6 123 gPB_left.setSampleFrequency();
jhurley31 2:30020ddfccf6 124 gPB_right.setSampleFrequency();
jhurley31 3:98aa3db6a48f 125 gPB_fire.setSampleFrequency();
jhurley31 3:98aa3db6a48f 126
jhurley31 2:30020ddfccf6 127 //////////////////////////////////////
jhurley31 2:30020ddfccf6 128 // Everything should be ready to start playing the game.
jhurley31 1:a6872783beca 129 while(1)
jhurley31 1:a6872783beca 130 {
jhurley31 3:98aa3db6a48f 131 guLCD.cls();
jhurley31 2:30020ddfccf6 132 // Ask the user if they would like to play a game.
jhurley31 3:98aa3db6a48f 133 guLCD.printf("Would you like to play a game?\n\n Press Any Key to Start");
jhurley31 2:30020ddfccf6 134
jhurley31 3:98aa3db6a48f 135 wait(.01);
jhurley31 2:30020ddfccf6 136 // Wait for a button to be pressed
jhurley31 3:98aa3db6a48f 137 gGameState = GAME_PAUSED;
jhurley31 3:98aa3db6a48f 138
jhurley31 2:30020ddfccf6 139 while (gGameState == GAME_PAUSED)
jhurley31 2:30020ddfccf6 140 {
jhurley31 3:98aa3db6a48f 141
jhurley31 3:98aa3db6a48f 142 wait(0.1);
jhurley31 3:98aa3db6a48f 143 }
jhurley31 3:98aa3db6a48f 144
jhurley31 3:98aa3db6a48f 145 guLCD.cls();
jhurley31 3:98aa3db6a48f 146
jhurley31 3:98aa3db6a48f 147 // Start up new game
jhurley31 3:98aa3db6a48f 148 gSpeakerOut.SwitchSound(Speaker::BEATS1);
jhurley31 3:98aa3db6a48f 149 // Create Initial Asteriods
jhurley31 3:98aa3db6a48f 150
jhurley31 3:98aa3db6a48f 151 // Start Game loop
jhurley31 3:98aa3db6a48f 152
jhurley31 3:98aa3db6a48f 153 while (gNumLives > 0)
jhurley31 3:98aa3db6a48f 154 {
jhurley31 3:98aa3db6a48f 155 // Move the ship and the asteriods
jhurley31 3:98aa3db6a48f 156 gShip.move();
jhurley31 3:98aa3db6a48f 157
jhurley31 3:98aa3db6a48f 158 for (int ii = 0 ; ii < NUM_ASTEROIDS ; ++ii)
jhurley31 2:30020ddfccf6 159 {
jhurley31 3:98aa3db6a48f 160 if (gAsteroids[ii].isValid())
jhurley31 3:98aa3db6a48f 161 {
jhurley31 3:98aa3db6a48f 162 gAsteroids[ii].move();
jhurley31 3:98aa3db6a48f 163 }
jhurley31 2:30020ddfccf6 164 }
jhurley31 3:98aa3db6a48f 165
jhurley31 3:98aa3db6a48f 166 // Check if all asteriods are invalid and exit game if that is the case
jhurley31 3:98aa3db6a48f 167 wait(gTimeStep);
jhurley31 2:30020ddfccf6 168 }
jhurley31 2:30020ddfccf6 169
jhurley31 2:30020ddfccf6 170 gGameState = GAME_PAUSED;
jhurley31 1:a6872783beca 171 }
jhurley31 2:30020ddfccf6 172
jhurley31 3:98aa3db6a48f 173 } //end main
jhurley31 3:98aa3db6a48f 174