Linyan Shi / Mbed 2 deprecated cn17lys

N5110

Dependencies:   mbed

Ball/Ball.cpp@0:90b7f20b3a8d, 2020-04-28 (annotated)

Committer:
aileen
Date:
Tue Apr 28 01:39:30 2020 +0000
Revision:
0:90b7f20b3a8d
N5110

Who changed what in which revision?

UserRevisionLine numberNew contents of line
aileen 0:90b7f20b3a8d 1 #include "Ball.h"
aileen 0:90b7f20b3a8d 2
aileen 0:90b7f20b3a8d 3 Ball::Ball()
aileen 0:90b7f20b3a8d 4 {
aileen 0:90b7f20b3a8d 5
aileen 0:90b7f20b3a8d 6 }
aileen 0:90b7f20b3a8d 7
aileen 0:90b7f20b3a8d 8 Ball::~Ball()
aileen 0:90b7f20b3a8d 9 {
aileen 0:90b7f20b3a8d 10
aileen 0:90b7f20b3a8d 11 }
aileen 0:90b7f20b3a8d 12
aileen 0:90b7f20b3a8d 13 void Ball::init(int size,int speed)
aileen 0:90b7f20b3a8d 14 {
aileen 0:90b7f20b3a8d 15 _size = size;
aileen 0:90b7f20b3a8d 16
aileen 0:90b7f20b3a8d 17 _x = WIDTH/2 - _size/2;
aileen 0:90b7f20b3a8d 18 _y = HEIGHT/2 - _size/2;
aileen 0:90b7f20b3a8d 19
aileen 0:90b7f20b3a8d 20 srand(time(NULL));
aileen 0:90b7f20b3a8d 21 int direction = rand() % 4; // randomise initial direction.
aileen 0:90b7f20b3a8d 22
aileen 0:90b7f20b3a8d 23 // 4 possibilities. Get random modulo and set velocities accordingly
aileen 0:90b7f20b3a8d 24 if (direction == 0) {
aileen 0:90b7f20b3a8d 25 _velocity.x = speed;
aileen 0:90b7f20b3a8d 26 _velocity.y = speed;
aileen 0:90b7f20b3a8d 27 } else if (direction == 1) {
aileen 0:90b7f20b3a8d 28 _velocity.x = speed;
aileen 0:90b7f20b3a8d 29 _velocity.y = -speed;
aileen 0:90b7f20b3a8d 30 } else if (direction == 2) {
aileen 0:90b7f20b3a8d 31 _velocity.x = speed;
aileen 0:90b7f20b3a8d 32 _velocity.y = speed;
aileen 0:90b7f20b3a8d 33 } else {
aileen 0:90b7f20b3a8d 34 _velocity.x = -speed;
aileen 0:90b7f20b3a8d 35 _velocity.y = -speed;
aileen 0:90b7f20b3a8d 36 }
aileen 0:90b7f20b3a8d 37 }
aileen 0:90b7f20b3a8d 38
aileen 0:90b7f20b3a8d 39 void Ball::draw(N5110 &lcd)
aileen 0:90b7f20b3a8d 40 {
aileen 0:90b7f20b3a8d 41 lcd.drawRect(_x,_y,_size,_size,FILL_BLACK);
aileen 0:90b7f20b3a8d 42 }
aileen 0:90b7f20b3a8d 43
aileen 0:90b7f20b3a8d 44 void Ball::update()
aileen 0:90b7f20b3a8d 45 {
aileen 0:90b7f20b3a8d 46 _x += _velocity.x;
aileen 0:90b7f20b3a8d 47 _y += _velocity.y;
aileen 0:90b7f20b3a8d 48 }
aileen 0:90b7f20b3a8d 49
aileen 0:90b7f20b3a8d 50 void Ball::set_velocity(Vector2D v)
aileen 0:90b7f20b3a8d 51 {
aileen 0:90b7f20b3a8d 52 _velocity.x = v.x;
aileen 0:90b7f20b3a8d 53 _velocity.y = v.y;
aileen 0:90b7f20b3a8d 54 }
aileen 0:90b7f20b3a8d 55
aileen 0:90b7f20b3a8d 56 Vector2D Ball::get_velocity()
aileen 0:90b7f20b3a8d 57 {
aileen 0:90b7f20b3a8d 58 Vector2D v = {_velocity.x,_velocity.y};
aileen 0:90b7f20b3a8d 59 return v;
aileen 0:90b7f20b3a8d 60 }
aileen 0:90b7f20b3a8d 61
aileen 0:90b7f20b3a8d 62 Vector2D Ball::get_pos()
aileen 0:90b7f20b3a8d 63 {
aileen 0:90b7f20b3a8d 64 Vector2D p = {_x,_y};
aileen 0:90b7f20b3a8d 65 return p;
aileen 0:90b7f20b3a8d 66 }
aileen 0:90b7f20b3a8d 67
aileen 0:90b7f20b3a8d 68 void Ball::set_pos(Vector2D p)
aileen 0:90b7f20b3a8d 69 {
aileen 0:90b7f20b3a8d 70 _x = p.x;
aileen 0:90b7f20b3a8d 71 _y = p.y;
aileen 0:90b7f20b3a8d 72 }