我正在尝试使用 LibGDX 和 Box2D 编写一些突破性游戏。但有一点我不明白。必须有两 block 砖 block 只与边缘接触。但在模拟器上我只看到两 block 嵌套的砖 block 。
这是 createBox 方法的代码:
private void createBox(float posX, float posY, float boxW, float boxH) {
BodyDef bodyDef = new BodyDef();
bodyDef.type = BodyDef.BodyType.StaticBody;
bodyDef.position.set(posX, posY);
Body body = world.createBody(bodyDef);
PolygonShape shape = new PolygonShape();
shape.setAsBox(boxW, boxH);
FixtureDef fixtureDef = new FixtureDef();
fixtureDef.shape = shape;
fixtureDef.density = 1f;
Fixture fixture = body.createFixture(fixtureDef);
shape.dispose();
}
编辑:乘以代码。
createBox(CONS_HOLDER.BRICKS_LEFT_MARGIN + (i * CONS_HOLDER.BRICK_WIDTH * 2 ),
CONS_HOLDER.BRICK_TOP_SCREEN_MARGIN + (j * CONS_HOLDER.BRICK_HEIGHT * 2 ) + CONS_HOLDER.BRICKS_TOP_MARGIN,
CONS_HOLDER.BRICK_WIDTH / 2,
CONS_HOLDER.BRICK_HEIGHT / 2);
最佳答案
setAsBox(float, float)
的文档指出参数是half-width
和half-height
。您应该将盒子的尺寸分成两半以获得正确的尺寸。
private void createBox(float posX, float posY, float boxW, float boxH) {
BodyDef bodyDef = new BodyDef();
bodyDef.type = BodyDef.BodyType.StaticBody;
bodyDef.position.set(posX, posY);
Body body = world.createBody(bodyDef);
PolygonShape shape = new PolygonShape();
shape.setAsBox(boxW / 2.f, boxH / 2.f);
FixtureDef fixtureDef = new FixtureDef();
fixtureDef.shape = shape;
fixtureDef.density = 1f;
Fixture fixture = body.createFixture(fixtureDef);
shape.dispose();
}
关于java - LibGDX + Box2D : Object Positioning,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/39368345/