Diff: Game/Game.cpp

Revision:

6:a2c72def99f9

Parent:

4:17d5b53b8815

Child:

7:8d381315f72c

diff -r a919651ebf36 -r a2c72def99f9 Game/Game.cpp
--- a/Game/Game.cpp	Tue May 26 17:14:44 2020 +0000
+++ b/Game/Game.cpp	Tue May 26 18:14:03 2020 +0000
@@ -4,37 +4,37 @@
 #include "N5110.h"
 #include "Menu.h"
 
-
+/**Constructor*/
 Game::Game()
 {
     x = 4;
     y = 4;
-    for (int i = 0; i < 16; i++) {
-        fruitX[i] = 3 + i*5;
+    for (int i = 0; i < 16; i++) {      //this creates the possible x coordinates the fruit can have
+        fruitX[i] = 3 + i*5;            //in order to be always alligned with the snake and stay inside the field
     }
-    for (int i = 0; i < 9; i++) {
-        fruitY[i] = 3 + i*5;
+    for (int i = 0; i < 9; i++) {       //this creates the possible y coordinates the fruit can have
+        fruitY[i] = 3 + i*5;            //in order to be always alligned with the snake and stay inside the field
     }
-    score = 0;
+    score = 0;                          //initial score is 0
     a = 0;                              //used to select the direction based ont what button is pressed
     ntail = 0;                          //used to increase lenght of the tail
     k = 0;
-    rx = rand() % 16;
-    ry = rand() % 9;
-    fruitX1 = fruitX[rx]+1;
-    fruitY1 = fruitY[ry]+1;
-    x_pos.push_back(4);
-    y_pos.push_back(4);
+    rx = rand() % 16;                   //choses a random number between 1 and 16, assigning it to the corresponding value in the for loop (x axis)
+    ry = rand() % 9;                    //same as the previous line but between 1 and 9 for the y axis
+    fruitX1 = fruitX[rx]+1;             //this line and the following calculate the center
+    fruitY1 = fruitY[ry]+1;             // point of the fruit needed to register the overlap with the head
+    x_pos.push_back(4);                 //adds initial x coordinate to the movement vector
+    y_pos.push_back(4);                 //adds initial y coordinate to the movement vector
 }
 
 void Game::movement(Gamepad &pad)
 {
-    if (pad.Y_held() && !(a == 2)) {
-        a = 1;
-    }
-    if (pad.A_held() && !(a == 1)) {
-        a = 2;
-    }
+    if (pad.Y_held() && !(a == 2)) {    //registers what button is being pressed,
+        a = 1;                          //associating it to an integer value
+    }                                   //between 1 and 4
+    if (pad.A_held() && !(a == 1)) {    //the second condition in each loop
+        a = 2;                          //is needed to prevent the snake from
+    }                                   //going backwards on itself
     if (pad.X_held() && !(a == 4)) {
         a = 3;
     }
@@ -45,21 +45,17 @@
 
 void Game::updating_position()
 {
-        if (a == 1) {
-        x += -5;
-        //wait(0.25);
+    if (a == 1) {                   //reads the integer value stored in the prevoius function
+        x += -5;                        //and depending on its value decides which way the snake moves
     }
     if (a == 2) {
         x += 5;
-        //wait(0.25);
     }
     if (a == 3) {
         y += -5;
-        //wait(0.25);
     }
     if (a == 4) {
         y += 5;
-        //wait(0.25);
     }
 
     int prevX = x_pos[0];
@@ -68,15 +64,15 @@
     x_pos[0] = x;
     y_pos[0] = y;
 
-    if (!(ntail + 1 == x_pos.size())) {
-        x_pos.push_back(x_pos[ntail - 1]);
-        y_pos.push_back(y_pos[ntail - 1]);
+    if (!(ntail + 1 == x_pos.size())) {             //adds each new segment's coordinates to the
+        x_pos.push_back(x_pos[ntail - 1]);          //movement vector in order to give eache
+        y_pos.push_back(y_pos[ntail - 1]);          //section the same movement
     }
 
     if (x_pos.size() > 0) {
-        for (int i = 0; i < x_pos.size() - 1; i++) {
-            x_pos[x_pos.size() - i - 1] = x_pos[x_pos.size() - i - 2];
-            y_pos[y_pos.size() - i - 1] = y_pos[y_pos.size() - i - 2];
+        for (int i = 0; i < x_pos.size() - 1; i++) {                        //regulates the movement of the snake
+            x_pos[x_pos.size() - i - 1] = x_pos[x_pos.size() - i - 2];      //having each section move to the previous
+            y_pos[y_pos.size() - i - 1] = y_pos[y_pos.size() - i - 2];      //coordinates of the segment in front of it
         }
         x_pos[1] = prevX;
         y_pos[1] = prevY;
@@ -88,11 +84,11 @@
     if (x < 1 || x > WIDTH-2) {                                 //if you hit the side walls you die
         while (1) {
             gameover(lcd, pad);
-            if (pad.B_held()) {
-                return 2;
+            if (pad.B_held()) {                                 //if you press start you will go back to the menu
+                return 1;
             }
-            if (pad.start_held()) {
-                return 1;
+            if (pad.start_held()) {                             //if you press B, you will initiate a new game
+                return 2;
             }
         }
     }
@@ -101,22 +97,22 @@
         while (1) {
             gameover(lcd, pad);
             if (pad.B_held()) {
-                return 2;
+                return 1;
             }
             if (pad.start_held()) {
-                return 1;
+                return 2;
             }
         }
     }
-    for (int i = 1; i < x_pos.size(); i++) {                    //if you hit your tail you die
+    for (int i = 1; i < x_pos.size(); i++) {                    //if you hit any part of your tail you die
         if (x_pos[0] == x_pos[i] && y_pos[0] == y_pos[i]) {
             while (1) {
                 gameover(lcd, pad);
                 if (pad.B_held()) {
-                    return 2;
+                    return 1;
                 }
                 if (pad.start_held()) {
-                    return 1;
+                    return 2;
                 }
             }
         }
@@ -132,28 +128,26 @@
     lcd.drawCircle(x,y,2,FILL_TRANSPARENT);                 //initial snake design
     //printf("size of vector %d\n", x_pos.size());
     for (k = 1; k <= ntail; k++) {
-        lcd.drawCircle(x_pos[k],y_pos[k],2,FILL_TRANSPARENT);
+        lcd.drawCircle(x_pos[k],y_pos[k],2,FILL_TRANSPARENT);   //draws each new segment of the snake
         //printf("draw \n");
     }
-    //printf("/////////////// \n");
+    lcd.refresh();
     //printf("Fruit x coordinate: %d\n", fruitX1);
     //printf("Fruit y coordinate: %d\n", fruitY1);
     //printf("Snake x: %d\n", x);
     //printf("Snake y: %d\n", y);
     //printf("seg1 x: %d\n", x_pos[1]);
     //printf("seg1 y: %d\n", y_pos[1]);
-    lcd.refresh();
 }
 
 void Game::gameover(N5110 &lcd,Gamepad &pad)
 {
     lcd.clear();
-    //while (1) {
-    lcd.printString("GAME OVER",WIDTH/2-25,0);
+    lcd.printString("GAME OVER",WIDTH/2-25,0);          //display of the gameover screen
     sprintf (buffer, "Score: %d",score);
-    lcd.printString(buffer,WIDTH/2-26,2);
-    lcd.printString("TO PLAY AGAIN",3,4);
-    lcd.printString("PRESS B",17,5);
+    lcd.printString(buffer,WIDTH/2-26,2);               //displays your score
+    lcd.printString("PLAY AGAIN: B",0,4);               //if you want to play again press B
+    lcd.printString("MENU: START",17,5);                //if you want to access the main menu press start
     pad.leds_on();
     wait(0.1);
     pad.leds_off();
@@ -161,15 +155,6 @@
     pad.tone(500.0,1);
     lcd.refresh();
     wait(1/6);
-    // if ( _pad.B_held()) {
-    //break;
-    //}
-    //}
-    /*wait(1/6);
-    _lcd.clear();
-    //_menu.menu_screen();
-    _lcd.refresh();
-    wait(1/6);*/
 }
 
 void Game::point(N5110 &lcd,Gamepad &pad)
@@ -181,25 +166,23 @@
         //printf("seg1 y: %d\n", y_pos[1]);
         //printf("Fruit x coordinate: %d\n", fruitX1);
         //printf("Fruit y coordinate: %d\n", fruitY1);
-        score = score + 10;
+        score = score + 10;                         //adds 10 to the score each time you eat a fruit
         pad.tone(750.0,1);
-        rx = rand() % 16;                           //generates a new random coordinate for the food
-        ry = rand() % 9;
+        rx = rand() % 16;                           //generates a new random x coordinate for the food
+        ry = rand() % 9;                            //generates a new random x coordinate for the food
         //printf("rx: %d\n", rx);
         //printf("ry: %d\n", ry);
         fruitX1 = fruitX[rx]+1;
         fruitY1 = fruitY[ry]+1;
         for (int i = 0; i < x_pos.size(); i++) {
-            if (fruitX1 == x_pos[i] && fruitY1 == y_pos[i]) {
-                rx = rand() % 16;
-                ry = rand() % 9;
+            if (fruitX1 == x_pos[i] && fruitY1 == y_pos[i]) {       //if the random set of coordinates
+                rx = rand() % 16;                                   //corresponds to the position of one of the segments of the snake
+                ry = rand() % 9;                                    //it finds a new set of coordinates
                 fruitX1 = fruitX[rx]+1;
                 fruitY1 = fruitY[ry]+1;
             }
         }
-        ntail++;
-        lcd.drawRect(fruitX[rx],fruitY[ry],3,3,FILL_BLACK);
-        //_lcd.refresh();
-        //wait(1/6);
+        ntail++;                                                    //increases the lenght of the tail
+        lcd.drawRect(fruitX[rx],fruitY[ry],3,3,FILL_BLACK);         //draws the new fruit
     }
 }
\ No newline at end of file