The (one) ball starts at the top-center of the screen

[richelbilderbeek]

Depends on:

• A game has a screen size #26

The (one) ball starts at the top-center of the screen

[richelbilderbeek]

Test pseudocode:

// Create a game
// Get the ball position
// Get the (intended) screen width
// The ball center position must be at coordinat (width / 2, 0)

[richelbilderbeek]

True test code:

const game g;
const auto screen_size{get_screen_size(g)};
const auto ball_coordinat{get_ball_center_coordinat(g)};
const auto screen_width{get_width(screen_size)};
const auto half_screen_width{screen_width / 2.0};
const auto ball_center_x{get_x(ball_coordinat)};
const auto ball_center_y{get_y(ball_coordinat)};

// Don't: never compare floating point values
// assert(ball_center_x == half_screen_width);
// assert(ball_center_y == 0.0);
// Do: add some room for rounding errors
assert(is_more_or_less_equal(ball_center_x, half_screen_width));
assert(is_more_or_less_equal(ball_center_y, 0.0));