James Heavey / Mbed 2 deprecated 2665-Breakout-Game

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Dependencies:   mbed

Ball/Ball.cpp@0:92b180c8d407, 2021-01-05 (annotated)

Committer:
jamesheavey
Date:
Tue Jan 05 01:14:11 2021 +0000
Revision:
0:92b180c8d407
test

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jamesheavey 0:92b180c8d407 1 #include "Ball.h"
jamesheavey 0:92b180c8d407 2
jamesheavey 0:92b180c8d407 3 Ball::Ball()
jamesheavey 0:92b180c8d407 4 {
jamesheavey 0:92b180c8d407 5
jamesheavey 0:92b180c8d407 6 }
jamesheavey 0:92b180c8d407 7
jamesheavey 0:92b180c8d407 8 Ball::~Ball()
jamesheavey 0:92b180c8d407 9 {
jamesheavey 0:92b180c8d407 10
jamesheavey 0:92b180c8d407 11 }
jamesheavey 0:92b180c8d407 12
jamesheavey 0:92b180c8d407 13 void Ball::init(int size,int speed, int x)
jamesheavey 0:92b180c8d407 14 {
jamesheavey 0:92b180c8d407 15 _size = size; // size of the ball
jamesheavey 0:92b180c8d407 16
jamesheavey 0:92b180c8d407 17 _x = x; // init position of the ball will be at the centre of the paddle
jamesheavey 0:92b180c8d407 18 _y = HEIGHT - _size/2 - 3; // fixed y init position, just above the paddle
jamesheavey 0:92b180c8d407 19
jamesheavey 0:92b180c8d407 20 srand(time(NULL));
jamesheavey 0:92b180c8d407 21 int direction = rand() % 2; // randomise initial direction.
jamesheavey 0:92b180c8d407 22
jamesheavey 0:92b180c8d407 23 // 2 directions, both directed upwards (N) from the paddle
jamesheavey 0:92b180c8d407 24 if (direction == 0) {
jamesheavey 0:92b180c8d407 25 _velocity.x = speed; // direction = E
jamesheavey 0:92b180c8d407 26 _velocity.y = -speed; // direction = N
jamesheavey 0:92b180c8d407 27 } else {
jamesheavey 0:92b180c8d407 28 _velocity.x = -speed; // direction = W
jamesheavey 0:92b180c8d407 29 _velocity.y = -speed; // direction = N
jamesheavey 0:92b180c8d407 30 }
jamesheavey 0:92b180c8d407 31 }
jamesheavey 0:92b180c8d407 32
jamesheavey 0:92b180c8d407 33
jamesheavey 0:92b180c8d407 34 void Ball::draw(N5110 &lcd) // draw the ball at the specified location
jamesheavey 0:92b180c8d407 35 {
jamesheavey 0:92b180c8d407 36 lcd.drawRect(_x,_y,_size,_size,FILL_BLACK);
jamesheavey 0:92b180c8d407 37 }
jamesheavey 0:92b180c8d407 38
jamesheavey 0:92b180c8d407 39
jamesheavey 0:92b180c8d407 40 void Ball::update() // update the ball's position, based on its current velocity
jamesheavey 0:92b180c8d407 41 {
jamesheavey 0:92b180c8d407 42 _x += _velocity.x;
jamesheavey 0:92b180c8d407 43 _y += _velocity.y;
jamesheavey 0:92b180c8d407 44 }
jamesheavey 0:92b180c8d407 45
jamesheavey 0:92b180c8d407 46
jamesheavey 0:92b180c8d407 47 void Ball::set_velocity(Vector2D v) // set the velocity in its x/y directions (used for collision velocity correction)
jamesheavey 0:92b180c8d407 48 {
jamesheavey 0:92b180c8d407 49 _velocity.x = v.x;
jamesheavey 0:92b180c8d407 50 _velocity.y = v.y;
jamesheavey 0:92b180c8d407 51 }
jamesheavey 0:92b180c8d407 52
jamesheavey 0:92b180c8d407 53
jamesheavey 0:92b180c8d407 54 Vector2D Ball::get_velocity() // retrieve the ball's current velocities
jamesheavey 0:92b180c8d407 55 {
jamesheavey 0:92b180c8d407 56 Vector2D v = {_velocity.x,_velocity.y};
jamesheavey 0:92b180c8d407 57 return v;
jamesheavey 0:92b180c8d407 58 }
jamesheavey 0:92b180c8d407 59
jamesheavey 0:92b180c8d407 60
jamesheavey 0:92b180c8d407 61 Vector2D Ball::get_pos() // retrieve the ball's current coordinates
jamesheavey 0:92b180c8d407 62 {
jamesheavey 0:92b180c8d407 63 Vector2D p = {_x,_y};
jamesheavey 0:92b180c8d407 64 return p;
jamesheavey 0:92b180c8d407 65 }
jamesheavey 0:92b180c8d407 66
jamesheavey 0:92b180c8d407 67
jamesheavey 0:92b180c8d407 68 void Ball::set_pos(Vector2D p) // set the ball's coordinates (used for collision velocity correction)
jamesheavey 0:92b180c8d407 69 {
jamesheavey 0:92b180c8d407 70 _x = p.x;
jamesheavey 0:92b180c8d407 71 _y = p.y;
jamesheavey 0:92b180c8d407 72 }