4
Ball.cpp
- Committer:
- eencae
- Date:
- 2017-03-01
- Revision:
- 1:201ef6494656
- Parent:
- 0:a695d2b64167
- Child:
- 2:3c92f5ae0502
File content as of revision 1:201ef6494656:
#include "Ball.h" Ball::Ball() { } Ball::~Ball() { } void Ball::init(int radius,int speed,int seed) { _radius = radius; _x = WIDTH/2 - _radius/2; _y = HEIGHT/2 - _radius/2; srand(seed); int direction = rand() % 4; // randomise initial direction. // 4 possibilities. Get random modulo and set velocities accordingly if (direction == 0) { _velocity.x = speed; _velocity.y = speed; } else if (direction == 1) { _velocity.x = speed; _velocity.y = -speed; } else if (direction == 2) { _velocity.x = -speed; _velocity.y = speed; } else { _velocity.x = -speed; _velocity.y = -speed; } } void Ball::draw(N5110 &lcd) { lcd.drawRect(_x,_y,_radius,_radius,1); } void Ball::update() { _x += _velocity.x; _y += _velocity.y; } void Ball::set_velocity(Vector2D v) { _velocity.x = v.x; _velocity.y = v.y; } Vector2D Ball::get_velocity() { Vector2D v = {_velocity.x,_velocity.y}; return v; } Vector2D Ball::get_pos() { Vector2D p = {_x,_y}; return p; } void Ball::set_pos(Vector2D p) { _x = p.x; _y = p.y; } int Ball::get_radius() { return _radius; } // Private Methods