Diff: main.cpp

Revision:

2:9c075a0a6d4e

Parent:

1:5fcb94bb03db

--- a/main.cpp	Thu Oct 17 04:32:58 2013 +0000
+++ b/main.cpp	Thu Oct 17 22:09:22 2013 +0000
@@ -1,30 +1,40 @@
+/*
+*   5x5 LED Snake Game
+*   Author: Daniel Hamilton
+*   ECE 4180 Lab 3
+*
+*/
+
 #include "mbed.h"
 #include "ledCube.h"
 #include "snake.h"
 #include "main.h"
 
-snake mySnake(snakeStartRow,snakeStartCol);
-food myFood(foodStartRow, foodStartCol);
-ledCube cube;
-AnalogIn joyVer(p19);
-AnalogIn joyHor(p18);
-DigitalIn select(p17);
+snake mySnake(snakeStartRow,snakeStartCol); // Snake represents the coordinates making up the snake
+food myFood(foodStartRow, foodStartCol); // food pellet the snake is trying to eat
+ledCube cube;                           // Currently a square, but represents and controls the physical LEDs
+AnalogIn joyVer(p19);                   // vertical analog joystick input pin
+AnalogIn joyHor(p18);                   // Horizontal analog joystick input pin
+DigitalIn select(p17);                  // Pushbutton on the joystick (currently unused)
 
 int main()
 {
     printf("Start\n");
-    int snakeUpdateCounter = 0;
-    cube.turnOnLed(snakeStartRow, snakeStartCol, 0);
-    updateFoodLed();
+    int snakeUpdateCounter = 0; // keeps track of when we should move Snake
+    cube.turnOnLed(snakeStartRow, snakeStartCol, 0); // Starts the snake at Row 0 Col 0
+    updateFoodLed();                                 // Lights up the food LED
     printf("Setup Complete\n");
+    bool gameover = false;                           // Is set to true when the game is over and keeps the LEDs blinking
 
     while(1) {
         // Update snake position if we are greater than the set movement speed
         if(snakeUpdateCounter++ >= mySnake.movementSpeed) {
             snakeUpdateCounter = 0;
-            if(mySnake.moveSnake(cube)) {
+            if(mySnake.moveSnake(&cube) || gameover) {
+                gameover = true;
                 cube.blink();
             }
+            // See if the snake is on the Food's LED
             if(checkForSnakeEating()) {
                 myFood.moveFood(rand() % 5, rand() % 5);
                 updateFoodLed();
@@ -36,16 +46,23 @@
     
 }
 
+// Return true if the snake is on a food, false otherwise
 bool checkForSnakeEating()
 {
     return mySnake.isEating(myFood.currRow, myFood.currCol);
 }
 
+// Update the food's loction
 void updateFoodLed()
 {
     cube.turnOnLed(myFood.currRow, myFood.currCol, 0);
+    printf("FOOD: Row: %d Col: %d\n", myFood.currRow, myFood.currCol);
+    if(mySnake.movementSpeed > 0){
+        mySnake.movementSpeed--;
+    }
 }
 
+// Updates the direction the snake is traveling based on the analog controller's input
 void updateDirectionInput(){
    float verValue, horValue;
     int pushed;
@@ -55,18 +72,18 @@
         pushed = select;
         if(horValue < .4){
             mySnake.movementDirection = Left;
-            printf("Left\n");
+            //printf("Left\n");
         }
         else if(horValue > .6){
             mySnake.movementDirection = Right;
-            printf("Right\n");
+            //printf("Right\n");
         }
         if(verValue < .4){
             mySnake.movementDirection = Down;
-            printf("Down\n");
+            //printf("Down\n");
         }
         else if(verValue > .6){
             mySnake.movementDirection = Up;
-            printf("Up\n");
+            //printf("Up\n");
         }
 }
\ No newline at end of file