comefrombottom

# include <Siv3D.hpp>

void dragVec2(Vec2& v, bool& dragging, double r = 5) {
	if (v.asCircle(r).leftClicked())dragging = true;
	if (MouseL.up()) {
		if (KeySpace.pressed()) {
			constexpr Point step{ 10,10 };
			v = Floor(v / step + Vec2{0.5, 0.5})* step;
		}
		dragging = false;