Diff: Ball/Ball.cpp

Revision:

0:92b180c8d407

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Ball/Ball.cpp	Tue Jan 05 01:14:11 2021 +0000
@@ -0,0 +1,72 @@
+#include "Ball.h"
+
+Ball::Ball()
+{
+
+}
+
+Ball::~Ball()
+{
+
+}
+
+void Ball::init(int size,int speed, int x)
+{
+    _size = size; // size of the ball
+
+    _x = x;   // init position of the ball will be at the centre of the paddle
+    _y = HEIGHT - _size/2 - 3; // fixed y init position, just above the paddle
+
+    srand(time(NULL));
+    int direction = rand() % 2; // randomise initial direction.
+
+    // 2 directions, both directed upwards (N) from the paddle
+    if (direction == 0) {
+        _velocity.x = speed; // direction = E
+        _velocity.y = -speed; // direction = N
+    } else {
+        _velocity.x = -speed; // direction = W
+        _velocity.y = -speed; // direction = N
+    }
+}
+
+
+void Ball::draw(N5110 &lcd)  // draw the ball at the specified location
+{
+    lcd.drawRect(_x,_y,_size,_size,FILL_BLACK);
+}
+
+
+void Ball::update()  // update the ball's position, based on its current velocity
+{
+    _x += _velocity.x;
+    _y += _velocity.y;
+}
+
+
+void Ball::set_velocity(Vector2D v) // set the velocity in its x/y directions (used for collision velocity correction)
+{
+    _velocity.x = v.x;
+    _velocity.y = v.y;
+}
+
+
+Vector2D Ball::get_velocity() // retrieve the ball's current velocities
+{
+    Vector2D v = {_velocity.x,_velocity.y};
+    return v;
+}
+
+
+Vector2D Ball::get_pos() // retrieve the ball's current coordinates
+{
+    Vector2D p = {_x,_y};
+    return p;
+}
+
+
+void Ball::set_pos(Vector2D p)  // set the ball's coordinates (used for collision velocity correction)
+{
+    _x = p.x;
+    _y = p.y;
+}
\ No newline at end of file