C++ のパワーを引き出す Siv3D
難易度が高い C++ を、短く & たくさんの機能を使えるよう強化
# include
void Main() {
Size brickSize{ 40, 20 };
double speed = 480.0;
Vec2 ballVelocity{ 0, -speed };
Circle ball{ 400, 400, 8 };
Array bricks;
for (auto p : step(Size{ (Scene::Width() / brickSize.x), 5 }))
bricks << Rect{ (p.x * brickSize.x), (60 + p.y * brickSize.y), brickSize };
while (System::Update()) {
Rect paddle{ Arg::center(Cursor::Pos().x, 500), 60, 10 };
ball.moveBy(ballVelocity * Scene::DeltaTime());
for (auto it = bricks.begin(); it != bricks.end(); ++it)
if (it->intersects(ball)) {
(it->bottom().intersects(ball) || it->top().intersects(ball) ? ballVelocity.y : ballVelocity.x) *= -1;
bricks.erase(it);
break;
}
if (ball.y < 0 && ballVelocity.y < 0)
ballVelocity.y *= -1;
if ((ball.x < 0 && ballVelocity.x < 0) || (Scene::Width() < ball.x && 0 < ballVelocity.x))
ballVelocity.x *= -1;
if (0 < ballVelocity.y && paddle.intersects(ball))
ballVelocity = Vec2{ (ball.x - paddle.center().x) * 10, -ballVelocity.y }.setLength(speed);
for (const auto& brick : bricks)
brick.stretched(-1).draw(HSV{ brick.y - 40 });
ball.draw();
paddle.draw();
}
}
C++ で自力で作ると
500 行ぐらいかかる
Siv3D は 27 行
cpp
fullfull
aiyzel04
kaityo256
nakayama48
matleenalaakso
cbtlibrary
takayanagiken
signer
juliawrobel
ashitanoterakoya
bkeepers
tanoku
trallard
phodgson
destraynor
rocio
ammeep
danielanewman
geeforr
malarkey
shlominoach
productmarketing