Diff: Ball/Ball.cpp

Revision:

4:035448357749

Parent:

3:a8960004d261

Child:

5:0b31909caf7f

--- a/Ball/Ball.cpp	Fri Mar 29 18:45:40 2019 +0000
+++ b/Ball/Ball.cpp	Mon Apr 08 15:10:28 2019 +0000
@@ -20,8 +20,9 @@
 {
     _x_pos = x;
     _y_pos = y;
-    _x_vel = 0;
-    _y_vel = 0;
+    _x_vel = 0.0f;
+    _y_vel = 0.0f;
+    _shot_count = 0;
 
 }
 
@@ -30,72 +31,101 @@
     lcd.drawRect(_x_pos,_y_pos,3,3,FILL_BLACK); //draws ball 
 }
 
-void Ball::draw_aim(N5110 &lcd)
+void Ball::draw_aim(N5110 &lcd, Gamepad &pad)
 {
-    lcd.drawLine((_x_pos+1.0f),(_y_pos+1.0f),(_x_pos+1.0f)-(_joy.x*16.0f),(_y_pos+1.0f)-(-_joy.y*16.0f),2); //draws ball 
+    read_joy(pad);
+    lcd.drawLine((_x_pos+1.0f),(_y_pos+1.0f),(_x_pos+1.0f)+(_joystick.x*16.0f),(_y_pos+1.0f)-(_joystick.y*16.0f),1); //draws ball 
+}
+
+void Ball::draw_course(N5110 &lcd) 
+{
+    lcd.drawRect(0,16,83,32,FILL_TRANSPARENT);    
 }
 
-void Ball::draw_screen(N5110 &lcd) 
-{
-    lcd.drawRect(16,8,51,31,FILL_TRANSPARENT);    
+void Ball::draw_screen(N5110 &lcd, Gamepad &pad) {
+    
+    draw_course(lcd);
+    draw_ball(lcd);
+    draw_aim(lcd, pad);
+    print_shot_count(lcd); 
 }
 
-void Ball::move_ball()
+void Ball::move_ball(int frame_rate, N5110 &lcd)
 {
-    _x_pos = _x_pos + _x_vel;     
-    _y_pos = _y_pos + _y_vel;   
-    _x_vel = _x_vel*0.9f; //ball slows down 10% each loop 
-    _y_vel = _y_vel*0.9f; 
-    check_hit_wall();
+    check_bounce(lcd);
+    _x_pos = _x_pos + _x_vel*10.0f/frame_rate; //frame_rate used to scale ball movement so that it is the same for any fps  
+    _y_pos = _y_pos + _y_vel*10.0f/frame_rate;   
+    _x_vel = _x_vel*(1.0f-(0.8f/frame_rate)); //ball slows down 10% each loop (scaled by time between frames)
+    _y_vel = _y_vel*(1.0f-(0.8f/frame_rate));
+    check_bounce(lcd);
   
 }
 
+Vector2D Ball::get_ball_pos()
+{   
+    Vector2D pos = {_x_pos, _y_pos};
+    return pos;
+}
+
 void Ball::shoot_ball(Gamepad &pad)
 {
-    if(pad.check_event(Gamepad::A_PRESSED) == true && _x_vel < 0.1f && _y_vel < 0.1f){ //if ball stationary and a pressed then shoot
     
-    _x_vel = 8.0f * _joy.x; //scale x velocity by joystick direction and magnitude
-    _y_vel = 8.0f * -_joy.y; //scale y velocity by joystick direction and magnitude
+    if(pad.check_event(Gamepad::A_PRESSED) == true && abs(_x_vel) < 0.05f && abs(_y_vel) < 0.05f){ //if ball stationary and a pressed then shoot
+    _x_vel = 8.0f * _joystick.x; //scale x velocity by joystick direction and magnitude
+    _y_vel = 8.0f * -_joystick.y; //scale y velocity by joystick direction and magnitude
+    _shot_count ++; //increment shot count
+    
     }
 
 }
 
+int Ball::get_shot_count()
+{
+    int shot_count = _shot_count;
+    return shot_count;
+}
+
+void Ball::print_shot_count(N5110 &lcd) 
+{
+    char buffer[14];
+    sprintf(buffer,"Shot Count = %i",_shot_count);
+    lcd.printString(buffer,0,0);      
+}
+
 void Ball::set_vel(float x_vel, float y_vel) 
 {
     _x_vel = x_vel;
     _y_vel = y_vel;
 }
 
-void Ball::check_hit_wall() 
+void Ball::check_bounce(N5110 &lcd) 
 {
     
-    if(_x_pos <= 16) { 
-        _x_pos = 17;
+    if(_x_pos - 1 < 0 ) { //
+        _x_pos = 1;
         _x_vel = -_x_vel;
     } 
-    
-    else if(_x_pos >= (WIDTH - 18)) {
-        _x_pos = (WIDTH - 20);
-        _x_vel = -_x_vel;
-    }
-    else if(_y_pos <= 8) { 
-        _y_pos = 9;
-        _y_vel = -_y_vel;
-    } 
-    
-    else if(_y_pos >= (HEIGHT - 11)) {
-        _y_pos = (HEIGHT - 13);
+    else if(_y_pos + 3 > 48) {
+        _y_pos = 45;
         _y_vel = -_y_vel;
     }
+    else if(_x_pos + 3 > 83 ) { 
+        _x_pos = 80;
+        _x_vel = -_x_vel;
+    } 
+    else if(_y_pos - 1 < 16) {
+        _y_pos = 17;
+        _y_vel = -_y_vel;
+    }
+    
+    
 }
 
 void Ball::read_joy(Gamepad &pad)
 {
                                     
-    _coords = pad.get_mapped_coord();
-    _joy.mag = pad.get_mag();
-    _joy.x = _coords.x;
-    _joy.y = _coords.y;
+    _joystick = pad.get_mapped_coord(); //x and y coordinates from joystick assigned 
+
     
 }
 //private methods