Diff: Ball/Ball.cpp

Revision:

8:d410856c6d04

Parent:

5:0b31909caf7f

Child:

9:bc34f2243e43

--- a/Ball/Ball.cpp	Wed Apr 17 11:13:54 2019 +0000
+++ b/Ball/Ball.cpp	Thu Apr 18 10:42:42 2019 +0000
@@ -38,22 +38,31 @@
     lcd.printString(buffer,40,0);      
 }
 
-void Ball::drawPower(N5110 &lcd, Gamepad &pad)
+void Ball::drawPower(N5110 &lcd, float mag)
 {     
-
-    _mag = pad.get_mag();
     lcd.drawRect(0,0,36,6,FILL_TRANSPARENT);
-    lcd.drawRect(0,0,36*_mag,6,FILL_BLACK);
+    lcd.drawRect(0,0,36*mag,6,FILL_BLACK);
 }
 
 
+void Ball::drawAim(N5110 &lcd, Vector2D joy_coord, float angle)
+{   
+    if(angle != -1.0f) {
+        lcd.drawLine(10,16,10+12*joy_coord.x,16+-12*joy_coord.y,1);
+    }
+
+}
+
 void Ball::move_ball(int frame_rate)
 {
-    _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  
+    _x_pos = _x_pos + _x_vel*10.0f/frame_rate; //move ball position at rate proportional to velocity in each direction  
     _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));
-  
+    _x_vel = _x_vel*(1.0f-(0.6f/frame_rate)); //ball slows down each loop caled by time between frames to ensure same movement at different frame rates
+    _y_vel = _y_vel*(1.0f-(0.6f/frame_rate));
+    if(_x_vel != 0 && _y_vel != 0 && abs(_x_vel) < 0.2f && abs(_y_vel) < 0.2f) { //to make ball come to complete stop once velocity is nearly 0
+        _x_vel = 0;
+        _y_vel = 0;
+    }  
 }
 
 Vector2D Ball::get_ball_pos()
@@ -62,13 +71,11 @@
     return pos;
 }
 
-void Ball::shoot_ball(Gamepad &pad)
-{    
-    _joystick = pad.get_mapped_coord();
-    
-    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
+void Ball::shoot_ball(Gamepad &pad, Vector2D _joy_coord)
+{        
+    if(pad.check_event(Gamepad::A_PRESSED) == true && abs(_x_vel) < TOL && abs(_y_vel) < TOL){ //if ball stationary and a pressed then shoot                                                                               
+        _x_vel = 6.0f * _joy_coord.x; //scale x velocity by joystick direction and magnitude
+        _y_vel = 6.0f * -_joy_coord.y; //scale y velocity by joystick direction and magnitude
         _shot_count ++; //increment shot count
     }
 
@@ -86,40 +93,56 @@
     _y_vel = y_vel;
 }
 
-void Ball::read_joy(Gamepad &pad)
+void Ball::check_wall_bounce(Course map[], int size) //uses information from course struct to check if ball bounces against any of the walls
 {
-                                    
-    _joystick = pad.get_mapped_coord(); //x and y coordinates from joystick assigned 
-
+    for(int i = 0; i < size; i ++) {
     
+        if(map[i].wall == LEFT) {
+            left_bounce(map[i].start,map[i].end);
+        }
+        else if(map[i].wall == RIGHT) {
+            right_bounce(map[i].start,map[i].end);        
+        }
+        else if(map[i].wall == TOP) {
+            top_bounce(map[i].start,map[i].end);
+        }
+        else if(map[i].wall == BOTTOM) {
+            bottom_bounce(map[i].start,map[i].end);
+        }
+    
+    }
 }
 
-void Ball::check_wall_bounce() //check before and after move_ball called
+void Ball::left_bounce(Coord start, Coord end) //top check for left wall collision
 {
-    if(_x_pos - 1 < 9 && _y_pos >= 26 && _y_pos <= 40 && _x_vel < 0){ // left wall (x=9 ,26<=y<=40)
-        _x_pos = 10;
-        _x_vel = -0.95f*_x_vel; //5% velocity lost on impact and bounce
+    if(_x_pos+_x_vel - 1 < start.x && _y_pos >= start.y && _y_pos <= end.y && _x_vel < 0){ // left wall (x=9 ,26<=y<=40)
+        _x_pos = start.x + 1;
+        _x_vel = -_x_vel; //5% velocity lost on impact and bounce
     }     
-    if(_x_pos + 1 > 74 && _y_pos <= 40 && _y_pos >= 9 && _x_vel > 0){ //right wall x + 1
-        _x_pos = 72;
-        _x_vel = -0.95f*_x_vel;
+}
+
+void Ball::right_bounce(Coord start, Coord end)
+{
+    if(_x_pos+_x_vel + 1 > start.x && _y_pos >= start.y && _y_pos <= end.y && _x_vel > 0){ //right wall x + 1
+        _x_pos = start.x - 1;
+        _x_vel = -_x_vel;
     }
-    if(_y_pos - 1 < 9 && _x_pos <= 74 && _x_pos >= 50 && _y_vel < 0){ //top wall y -1
-        _y_pos = 10;
-        _y_vel = -0.95f*_y_vel;
-    }
-    if(_y_pos + 1 > 40 && _x_pos >= 9 && _x_pos <= 74 && _y_vel > 0){ //bottom wall y  + 2
-        _y_pos = 39;
-        _y_vel = -0.95f*_y_vel;
+}
+
+void Ball::top_bounce(Coord start, Coord end)
+{
+    if(_y_pos+_y_vel - 1 < start.y && _x_pos >= start.x && _x_pos <= end.x && _y_vel < 0){ //top wall y -1
+        _y_pos = start.y + 1;
+        _y_vel = -_y_vel;
     }
-    if(_x_pos - 1 < 50 && _y_pos >= 9 && _y_pos <= 26 && _x_vel < 0){ // left wall x -1
-        _x_pos = 51;
-        _x_vel = -0.95f*_x_vel; //5% velocity lost on impact and bounce
-    }     
-    if(_y_pos - 1 < 26 && _x_pos <= 50 && _x_pos >= 9 && _y_vel < 0 ){ //top wall y -1
-        _y_pos = 27;
-        _y_vel = -0.95f*_y_vel;
-    }
+}
+
+void Ball::bottom_bounce(Coord start, Coord end)
+{
+    if(_y_pos+_y_vel + 1 > start.y && _x_pos >= start.x && _x_pos <= end.x && _y_vel > 0){ //bottom wall y  + 2
+        _y_pos = start.y - 1;
+        _y_vel = -_y_vel;
+    }  
 }
 //private methods