// Create a horizontal box fixture attached to the ground body.
b2Fixture* BodyContactTests::CreateGroundBox()
{
b2Assert(m_groundBody);
b2PolygonShape shape;
shape.SetAsBox(10.0f * m_particleDiameter, m_particleDiameter);
return m_groundBody->CreateFixture(&shape, 0.0f);
}
void createWorld (b2World& world) {
m_stepCount = 0;
m_angularVelocity = 0;
{
b2BodyDef bd;
bd.position.Set(0, 0);
b2Body * body = world.CreateBody(&bd);
b2PolygonShape * shape = new b2PolygonShape();
shape->SetAsEdge(b2Vec2(-10, 0), b2Vec2(10, 0));
body->CreateFixture(shape, 0);
shape->SetAsBox(0.2f, 1.0f, b2Vec2(0.5f, 1.0f), 0);
body->CreateFixture(shape, 0);
delete shape;
}
{
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position.Set(0, 20);
b2PolygonShape * shape = new b2PolygonShape();
shape->SetAsBox(2, 0.1f);
m_body = world.CreateBody(&bd);
m_body->CreateFixture(shape, 1);
m_angularVelocity = 33.468121f;
m_body->SetLinearVelocity(b2Vec2(0, -100));
m_body->SetAngularVelocity(m_angularVelocity);
delete shape;
}
}
bool keyDown (int keyCode) {
if (keyCode == gdx_cpp::Input::Keys::COMMA) {
if (m_bullet != NULL) {
world->DestroyBody(m_bullet);
m_bullet = NULL;
}
{
b2CircleShape * shape = new b2CircleShape();
shape->m_radius = 0.25f;
b2FixtureDef fd;
fd.shape = shape;
fd.density = 20.0f;
fd.restitution = 0.05f;
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.bullet = true;
bd.position.Set(-31, 5);
m_bullet = world->CreateBody(&bd);
m_bullet->CreateFixture(&fd);
m_bullet->SetLinearVelocity(b2Vec2(400, 0));
}
}
return false;
}
Value CreateFixture(b2Body &body, b2Shape &shape)
{
auto fixture = body.CreateFixture(&shape, 1.0f);
auto r = new Renderable("color");
fixture->SetUserData(r);
return Value((int)fixtures->Add(fixture));
}
Pelota(b2World* _world ,RenderWindow *_wnd){
//guardamos puntero a ventana para dibujar luego
wnd=_wnd;
_image= new Image();
_image->LoadFromFile("pelota.jpg");
//cargamos el sprite
_sprite= new Sprite(*_image);
//definimos el body y lo creamos
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set(100.0f, 0.0f);
_body = _world->CreateBody(&bodyDef);
//creamos su figura de colisión
//en este caso suponemos que la figura de
//colision es una caja cuadrada
b2PolygonShape dynamicBox;
dynamicBox.SetAsBox(20.0f, 20.0f);
//creamos el fixture, le seteamos
//la figura de colision
//y agregamos el fixture al body
b2FixtureDef fixtureDef;
fixtureDef.shape = &dynamicBox;
fixtureDef.density = 10.0f;
fixtureDef.friction = 0.3f;
fixtureDef.restitution=1.0f;
_body->CreateFixture(&fixtureDef);
}
//constructor
Car(b2World* world){
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
w_body = world->CreateBody(&bodyDef);
b2PolygonShape polygonShape;
polygonShape.SetAsBox(0.5f, 1.25f);
b2Fixture* fixture = w_body->CreateFixture(&polygonShape, 1);//shape, density
fixture->SetUserData(new CarTireFUD());
w_body->SetUserData(this);
currentTraction = 1;
}
// Create a valley (similar to the Anti-Pointy test in the Testbed) and
// attach to the ground body.
void BodyContactTests::CreateValley()
{
b2Assert(m_groundBody);
float32 i;
const float32 step = 1.0f;
for (i = -10.0f; i < 10.0f; i+=step)
{
b2PolygonShape shape;
const b2Vec2 vertices[] = {
b2Vec2(i, -10.0f),
b2Vec2(i+step, -10.0f),
b2Vec2(0.0f, 15.0f)
};
shape.Set(vertices, B2_ARRAY_SIZE(vertices));
m_groundBody->CreateFixture(&shape, 0.0f);
}
for (i = -10.0f; i < 35.0f; i+=step)
{
b2PolygonShape shape;
const b2Vec2 vertices[] = {
b2Vec2(-10.0f, i),
b2Vec2(-10.0f, i+step),
b2Vec2(0.0f, 15.0f)
};
shape.Set(vertices, B2_ARRAY_SIZE(vertices));
m_groundBody->CreateFixture(&shape, 0.0f);
const b2Vec2 vertices2[] = {
b2Vec2(10.0f, i),
b2Vec2(10.0f, i+step),
b2Vec2(0.0f, 15.0f)
};
shape.Set(vertices2, B2_ARRAY_SIZE(vertices2));
m_groundBody->CreateFixture(&shape, 0.0f);
}
}
Ball(b2World* world, float radius) {
m_body = NULL;
m_radius = radius;
b2BodyDef myBodyDef;
myBodyDef.type = b2_dynamicBody;
myBodyDef.position.Set(0, 20);
m_body = world->CreateBody(&myBodyDef);
m_contacting = false;
//add circle fixture
b2CircleShape circleShape;
circleShape.m_p.Set(0, 0);
circleShape.m_radius = m_radius; //use class variable
b2FixtureDef myFixtureDef;
myFixtureDef.shape = &circleShape;
myFixtureDef.density = 1;
m_body->CreateFixture(&myFixtureDef);
m_body->SetUserData( this );
}
block(float w,float h,float x,float y,int a, b2World* m_world,int s_d=0, float friction =1.0f,float density=1.0f)
{
b2PolygonShape shape;
shape.SetAsBox(w, h);
bd.angle = a; //set the starting angle
bd.position.Set(x, y);
if(s_d==1)bd.type = b2_dynamicBody;
if(s_d==0)bd.type = b2_staticBody;
body = m_world->CreateBody(&bd);
b2FixtureDef *fd = new b2FixtureDef;
fd->density = density;
fd->shape = new b2PolygonShape;
fd->shape = &shape;
fd->friction = friction;
fd->restitution = 0.0f;
body->CreateFixture(fd);
}
b2Fixture * operator()(const CollisionPolygonDef & aDef) const
{
b2Fixture *fixture = mBody->CreateFixture(&aDef.mFixture);
fixture->SetUserData(mBody->GetUserData());
return fixture;
}
Value CreateFixture(VM &vm, b2Body &body, b2Shape &shape) {
auto fixture = body.CreateFixture(&shape, 1.0f);
auto po = new PhysicsObject(Renderable("color"), fixture);
fixture->SetUserData(po);
return Value(vm.NewResource(po, &physics_type));
}
