added snack generator and implemented teh snake-snack collision checker

include/Controller.h

@@ -8,6 +8,7 @@
 class Controller{
 private:
     Snake *snake; //the figure the controler controls
+    Point snack;
     graphics_input inpt;
 public:
     Controller(Snake* _snake);

include/Graphics.h

@@ -11,9 +11,9 @@ typedef int graphics_input; //the type of the graphics input
 
 
 #define GAME_TOP_WALL_Y 1
-#define GAME_BOTTOM_WALL_Y LINES+1
-#define GAME_LEFT_WALL_X -1
-#define GAME_RIGHT_WALL_X COLS+1
+#define GAME_BOTTOM_WALL_Y (LINES - 4)
+#define GAME_LEFT_WALL_X 1
+#define GAME_RIGHT_WALL_X (COLS - 2)
 
 void initializeGraphics(void);
 void endGraphics(void);

include/Snack.h

@@ -4,3 +4,6 @@
 
 #define SNACK '*'
 
+//snack methods
+void generateSnack(Point &snack);
+unsigned int getSnackScore(void);

src/Controller.cpp

@@ -4,13 +4,15 @@
 using namespace std;
 
 Controller::Controller()
-:inpt{0}
+: snack{SNACK} ,inpt{0}
 {
     snake = new Snake();
+    generateSnack(snack);
 }
 
 Controller::Controller(Snake *_snake)
-: snake{_snake}, inpt{0} {
+: snake{_snake}, snack{SNACK}, inpt{0}
+{
 
     assert(this->snake != NULL);
 }
@@ -18,6 +20,13 @@ Controller::Controller(Snake *_snake)
 Controller::~Controller(){}
 
 int Controller::act(void){
+
+    if (snake->hasBitSnack(this->snack.getY(), this->snack.getX()) == true)
+    {
+        generateSnack(this->snack);
+        this->snake->incSize();
+    }
+
     switch (this->inpt)
     {
     case UP:
@@ -36,8 +45,9 @@ int Controller::act(void){
         snake->move();
     break;
     }
+
     refreshScreen();
-    
+
     if(snake->isBitten()) 
         return DEFEAT;
     if (snake->hasCrashedWall())

src/Graphics.cpp

@@ -1,8 +1,11 @@
 #include "Graphics.h"
 #include <chrono>
 #include <thread>
+#include <time.h>
+#include <cstdlib>
+
 ///Utillities for the graphics
-unsigned int sleepTime = 50000000;
+unsigned int sleepTime = 40000000;
 static WINDOW *_box = NULL;
 
 static void createBox(void){
@@ -17,6 +20,8 @@ static void destroyBox(void){
 }
 //Initialization function
 void initializeGraphics(void){
+    srand((unsigned int) time(NULL));
+
     initscr(); //initialize curses
     cbreak(); //set line buffering to false
     noecho(); //set input echo to false

src/Snack.cpp

@@ -0,0 +1,22 @@
+#include "Snack.h"
+#include <cstdlib>
+
+using namespace std;
+
+
+const unsigned int snackScore = 10;
+
+void generateSnack(Point &snack){
+
+    int x, y;
+    
+    x = (rand() + 1) % GAME_RIGHT_WALL_X;
+    y = (rand() + 1) % GAME_BOTTOM_WALL_Y;
+    
+    snack.setPoint(y, x);
+
+    printChar(y, x, snack.getImg());
+}
+unsigned int getSnackScore(void){
+    return snackScore;
+}

src/SnakeImpl.cpp

@@ -6,7 +6,7 @@ Snake::Snake(int headY, int headX)
 :direction{LEFT}
 {
     snake.push_back(Point{headY, headX, '>'}); //add the head of the snake
-    for(int i=1; i<=7; i++)
+    for(int i=1; i<=3; i++)
         snake.push_back(Point{headY, headX+i, BODY});
     this->printSnake();
 }
@@ -28,7 +28,8 @@ bool Snake::isBitten(void){
 }
 
 bool Snake::hasBitSnack(int snackY, int snackX){
-    return readChar(snackY, snackX) == SNACK;
+    return snake.begin()->getY() == snackY 
+           && snake.begin()->getX() == snackX;
 }
 
 bool Snake::hasCrashedWall(void){