Diff: GameEngine.cpp

Revision:

2:ffbfd3f53ee2

Parent:

1:897160a1a3ae

--- a/GameEngine.cpp	Tue May 26 12:17:59 2020 +0000
+++ b/GameEngine.cpp	Sat May 30 06:12:09 2020 +0000
@@ -1,69 +1,73 @@
 #include "GameEngine.h"
-GameEngine::GameEngine()
+
+GameEngine::GameEngine()        //constructor
 {
 
 }
 
-GameEngine::~GameEngine()
+GameEngine::~GameEngine()      //deconstructor
 {
-
 }
 
-void GameEngine::init(int shx, int shy, int apx, int apy)
+
+void GameEngine::print_scores(N5110 &lcd, Snake &snake)
 {
-    _shx = shx;
-    _shy = shy;            //intial value in front of snake
-    _apx = apx;
-    _apy = apy;
+
+    int score = snake.get_score();                                  //gets score from snake class object
+
+    char buffer1[14];
+    sprintf(buffer1,"%2d",score);                                  //sprintf is used to print as the program is displaying a variable
+    lcd.printString(buffer1,0,48);
 }
 
 
 
-void GameEngine::set_Snakehead(Vector2D Snakehead)
-{
-    Snakehead.x = _shx;
-    Snakehead.y = _shy;
-}
 
-Vector2D GameEngine::get_Snakehead()
+void GameEngine::get_LEDs(Gamepad &pad, Snake &snake)       //controls LEDs based on snake position
 {
-    Vector2D Snakehead = {_shx, _shy};
-    return Snakehead;
-}
-
+    pad.leds_off();                                         //initialise leds
+    Vector2D Snakehead = snake.get_Snakehead();             //call values stored in _x0 and _y0 to identify the snakehead
+    int _x0 = Snakehead.x;
+    int _y0 = Snakehead.y;
+    //depending where the snakehead is on the screen, different LEDs will turn on indicating its postion
+    // top right led on
+    if (_x0 >= 42 && _y0 <= 16) {               //defines paramaters of the top right quadrant of the lcd rectangle and turns on and off the top right LED if the x and y values are in the top right quadrant
 
-Vector2D GameEngine::get_Applepos()
-{
-    Vector2D Applepos = {_apx, _apy};
-    return Applepos;
-}
+        pad.led(4, 1);                        //turn on top right led4
+        wait(0.2);                            //wait 0.2 seconds
+        pad.led(4, 0);                        //turn it off
+    }
+    // topleft led on
+    if (_x0 <= 42 && _y0 <= 16 ) {             //parameter for top left
 
-
-void GameEngine::set_Applepos(N5110 &lcd)
-{
-
-    int appleposx = rand()%84;             //is this generating new position or will it just stick to one random selection - need to make sure its in the loop
-    int appleposy = rand()%24;
-
+        pad.led(1, 1);                          //turns on top left led
+        wait(0.2);
+        pad.led(1, 0);
+    }
+    //bottom left                           //defines paramaters of the bottom left quadrant of the rectangle on the lcd display and turns on and off the bottom left LED
+    if (_x0 <=42 && _y0 >= 16 ) {
 
-    if(lcd.getPixel(appleposx, appleposy)) {      // this pixel is set } else {     // this pixel is clear }
-        appleposx = rand()%84;
-        appleposy = rand()%24;   //  making sure the apple doesnt spawn inside the snakes body or wall which would increase the score
+        pad.led(3,1);                       //turns on bottom left led
+        wait(0.2);
+        pad.led(3, 0);
+    }
+    //bottom right
+    if (_x0 >= 42 && _y0 >= 16) {          //there are some overlap on the symetrical x and y axis where conditions are true in both loops causing leds to coome on at the same time and alternately blink
+        // top right led on
+        pad.led(6, 1);
+        wait(0.2);
+        pad.led(6, 0);                      //turns of bottom right led
     } else {
-
-
-        _apx = appleposx;                 //i and j are fed into applepos.x/y -- those values are then fed into set_applepos which assigngs that value to _appleposx/y which then is fed into get_applepos where it is stored and returned
-        _apy = appleposy;      //alters value of private variable - this can then be accessed by get_Applepos
-
-        lcd.setPixel(_apx,_apy, true);
     }
 }
 
+void GameEngine::print_countdown(N5110 &lcd, Snake &snake)          //prints counter
+{
 
-//void GameEngine::clear_applepos(N5110 &lcd) {
-//   int length = _snake.get_Length();
-//   wait(length x fps);
-//   lcd.setPixel(Applepos.x, Applepos.y,0);
-// }
-//void Snakerender_apple()
-// lcd.setPixel(_apx,_apy, true);
+    int countdown = snake.get_countdown();                         //Accessing the value of the member variale _countdown
+
+    char buffer1[14];
+    sprintf(buffer1,"%2d",countdown);                              //printing value onto lcd in each loops. - counter is set to decrement by 1 each loop
+    lcd.printString(buffer1,0,4);  //
+// printf("  countdown= %d   ", countdown);
+}