Diff: SpaceEngine/SpaceEngine.cpp

Revision:

147:c008c0a32d23

Parent:

146:5014ef83d4e6

Child:

148:83e5a4dedffd

--- a/SpaceEngine/SpaceEngine.cpp	Thu May 09 10:35:00 2019 +0000
+++ b/SpaceEngine/SpaceEngine.cpp	Thu May 09 11:57:29 2019 +0000
@@ -8,42 +8,41 @@
 }
 
 
-//void function to initalise all the parameters of SpaceEngine Class.
 
 void SpaceEngine::init(int x_spaceship,int y_spaceship, int x_bullet, int y_bullet,int fired_bullet, int x_alien,int y_alien, int speed_alien, int speed_bullet, int speed_spaceship)
 {
 
-    _x_spaceship=x_spaceship;  // represents the x-cooridante of the spaceship.
-    _y_spaceship=y_spaceship;               //represents the y-cooridante of the spaceship.
-    _speed_spaceship=speed_spaceship;       // speed of the spaceship.
-    _x_bullet=x_bullet;                     //the x-cooridante of the bullet.
-    _y_bullet=y_bullet;                    //the y-cooridante of the bullet.
-    _fired_bullet= fired_bullet;           //spaceship fired the alien by relaseing the bullet.
-    _x_alien= x_alien;                     // x-cooridante of the alien.
-    _y_alien= y_alien;                     //y-cooridante of the alien.
-    _speed_alien= speed_alien;            // the speed of the alien.
-    _speed_bullet=speed_bullet;           // the speed of the bullet 
-    
-    _bullet.init(_x_bullet, _y_bullet, speed_bullet,fired_bullet);  //initalise bullet.
-    _alien.init (_x_alien, _y_alien,_speed_alien);                  //initalise alien
-    _spaceship.init( _x_spaceship, _y_spaceship, _speed_spaceship);  //initalise spaceship
-    _alien_killed = 0;                                              // set the killed alien at 0.
+    _x_spaceship=x_spaceship; //represents the x-cooridante of the spaceship.
+    _y_spaceship=y_spaceship; //represents the y-cooridante of the spaceship.
+    _speed_spaceship=speed_spaceship; // speed of the spaceship.
+    _x_bullet=x_bullet; //represents the x-cooridante of the spaceship. 
+    _y_bullet=y_bullet; //represents the y-cooridante of the spaceship.
+    _fired_bullet= fired_bullet;  // spaceship fired the alien by relaseing the bullet.
+    _x_alien= x_alien;  //represents the x-cooridante of the alien.
+    _y_alien= y_alien;  //represents the y-cooridante of the spaceship.
+    _speed_alien= speed_alien; // speed of the alien.
+    _speed_bullet=speed_bullet; // speed of the bullet.
+
+    _bullet.init(_x_bullet, _y_bullet, speed_bullet,fired_bullet); //initalise the object bullet.
+    _alien.init (_x_alien, _y_alien,_speed_alien);  //initalise the object  alien.
+    _spaceship.init( _x_spaceship, _y_spaceship, _speed_spaceship);  //initalise the object  spaceship.
+    _alien_killed = 0;  // set the killed alien at 0.
 }
+
 // void function for Gamepad library to read the position of the objects. 
 void SpaceEngine::read_input(Gamepad &pad)
 {
-   
+
     _d = pad.get_direction();
     _mag = pad.get_mag();
-
 }
-
 /**this function draw the objects on the screen 
 *by using the (N5110 &lcd) libraries
 * if statment to check if the alien is alive so the lcd can draw it on the screen
 * else if statment will check if the alien dead so it should disappear 
 *also it draws the spaceship 
 */
+
 void  SpaceEngine::draw(N5110 &lcd)
 {
     _bullet.draw(lcd);
@@ -51,8 +50,8 @@
     if (_alien.isAlive() == true) {
         _alien.draw(lcd);
     } else { // alien is dead
-        int y_pos = (rand() % 30) + 10; // random number 10 to 39. 
-        _alien.init(70,y_pos,1);       //initalise alien. 
+        int y_pos = (rand() % 30) + 10; // random number 10 to 39
+        _alien.init(70,y_pos,1);
         wait(0.2);
     }
 
@@ -63,10 +62,11 @@
     lcd.printString(kills,70,0);
 
 }
-    /* 
-    *this void function for reading the the positions of the inputs(objects)by(Gamepad &pad)libraries in class SpaceEngine to detect the collisions.
-    *this inculde if statment that shows when joystic's direction to the east the bullt will fired.
-    */
+
+/* 
+*this void function for reading the the positions of the inputs(objects)by(Gamepad &pad)libraries in class SpaceEngine to detect the collisions.
+*this inculde if statment that shows when joystic's direction to the east the bullt will fired.
+*/
 void SpaceEngine::update(Gamepad &pad)
 {
     _bullet.update(_d,_mag);
@@ -79,12 +79,20 @@
     _x_bullet = _bullet.get_pos_x();
     if(_d==E) {
         _fired_bullet=1;
-        }
- _bullet.set_pos(_spaceship.get_pos_x()+33, _spaceship.get_pos_y());    //set the position of the bullet where the x= x_spaceship+x_bullet but the y are same
+        
+ _bullet.set_pos(_spaceship.get_pos_x()+33, _spaceship.get_pos_y());
+ }
     }
-    
-    
-    
+
+
+   
+ /*void function that checks the collision between the objects 
+ *if statment is to detect if x-coordinate of the bullet is larger or equal 65 
+ *and less than or equal to the 68 and if y-cooridante of the bullet is larger 
+ *than y-corrdindate of the alien-5 and y_alien+15 is larger or equal y_bullet
+ *then the alien gets killed. 
+ */
+
 void SpaceEngine::check_space_collision(Gamepad &pad) {
 
         if(_x_bullet >= 65 && _x_bullet <= 68 && _y_bullet >= _y_alien-5 && _y_bullet <= _y_alien+15) {
@@ -92,4 +100,4 @@
             _alien_killed++;
         }
 
-    }
+    }
\ No newline at end of file