我运行使用了
这是一个弹出窗口:
我的控制台上打印的错误信息如下:
Assertion failed : area > 1.19209 2896e-07F, path_to_unbuild_box2d\box2d_v2.3.0\box2d\box2d\collision\shapes\b2 polygonshape.cpp, line 422
当我点击“重试”时,错误发生在这里:
Box2D
的程序时出现了一个奇怪的错误,这真是出乎意料,因为它在一个与我的项目无关的文件中(未构建的文件夹没有链接到我的项目)。我为我的项目获取了VS12
的Box2D
副本,并为我的项目构建了它,并按照这里的教程https://www.youtube.com/watch?v=kEClRFKyGkw&list=PLSPw4ASQYyymu3PfG9gxywSPghnSMiOAW&index=53设置了项目。
这是我的代码:
void Box::init(b2World* world, const glm::vec2& position, const glm::vec2& dimensions)
{
m_dimensions = dimensions;
b2BodyDef boxDef;
boxDef.type = b2_dynamicBody;
boxDef.position.Set(position.x, position.y);
m_body = world->CreateBody(&boxDef);
b2PolygonShape boxShape;
boxShape.SetAsBox(position.x / 2.0f, position.y / 2.0f);
b2FixtureDef fixtureDef;
fixtureDef.shape = &boxShape;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
m_fixture = m_body->CreateFixture(&fixtureDef);
}
在我调用了 init()
的地方:
b2Vec2 gravity(0.0f, -9.8f);
m_world = std::make_unique<b2World>(gravity);
b2BodyDef groundBodyDef;
groundBodyDef.position.Set(0.0f, -10.0f);
b2Body* groundBody = m_world->CreateBody(&groundBodyDef);
b2PolygonShape groundShape;
groundShape.SetAsBox(50.0f, 10.0f);
groundBody->CreateFixture(&groundShape, 0.0f);
Box newBox;
newBox.init(m_world.get(), glm::vec2(0.0f, 14.0f), glm::vec2(15.0f, 15.0f));
m_boxes.push_back(newBox);
这是一个弹出窗口:
![Debug Error](https://istack.dev59.com/X9brb.webp)
Assertion failed : area > 1.19209 2896e-07F, path_to_unbuild_box2d\box2d_v2.3.0\box2d\box2d\collision\shapes\b2 polygonshape.cpp, line 422
当我点击“重试”时,错误发生在这里:
line 336 b2Fixture.h
。inline void b2Fixture::GetMassData(b2MassData* massData) const
{
m_shape->ComputeMass(massData, m_density);
}
问题1已修复
boxShape.SetAsBox(dimensions.x / 2.0f, dimensions.y / 2.0f); ///Instead of position.
position.x=0
和position.y=14
的值是否无效? - Anish Silwaldimension
。 - Anish Silwal