void Player::buildPlayerBox2DBody(b2World* world) {
CCPoint position = CCPointZero;
//body definition
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.fixedRotation = true;
b2Vec2 worldPosition = ViewPort::getInstance()->screenToWorldCoordinate(position);
bodyDef.position.Set(worldPosition.x, worldPosition.y);
//shape definition for main fixture
b2PolygonShape dynamicBox = _profile->spriteBox2DShape();
//fixture definition
b2FixtureDef fixtureDef;
fixtureDef.shape = &dynamicBox;
fixtureDef.density = 1;
fixtureDef.friction = 0.0f; // So the player will be able to slide next to obstacles
fixtureDef.restitution = 0.0f; // So the player will not bounce again from the ground
fixtureDef.filter.groupIndex = -1; //negative so the different players will not collide
//create dynamic body
b2Body *body = world->CreateBody(&bodyDef);
//add main fixture
body->CreateFixture(&fixtureDef);
setB2Body(body);
setPTMRatio(ViewPort::getInstance()->getPTMRatio());
setPosition(position);
}
void Box2DTestLayer::addNewSpriteAtPosition(Point p)
{
CCLOG("Add sprite %0.2f x %02.f",p.x,p.y);
// Define the dynamic body.
//Set up a 1m squared box in the physics world
b2BodyDef bodyDef;
bodyDef.type = b2_dynamicBody;
bodyDef.position.Set(p.x/PTM_RATIO, p.y/PTM_RATIO);
b2Body *body = world->CreateBody(&bodyDef);
// Define another box shape for our dynamic body.
b2PolygonShape dynamicBox;
dynamicBox.SetAsBox(.5f, .5f);//These are mid points for our 1m box
// Define the dynamic body fixture.
b2FixtureDef fixtureDef;
fixtureDef.shape = &dynamicBox;
fixtureDef.density = 1.0f;
fixtureDef.friction = 0.3f;
body->CreateFixture(&fixtureDef);
auto parent = this->getChildByTag(kTagParentNode);
//We have a 64x64 sprite sheet with 4 different 32x32 images. The following code is
//just kdRandomly picking one of the images
int idx = (CCRANDOM_0_1() > .5 ? 0:1);
int idy = (CCRANDOM_0_1() > .5 ? 0:1);
auto sprite = PhysicsSprite::createWithTexture(_spriteTexture,Rect(32 * idx,32 * idy,32,32));
parent->addChild(sprite);
sprite->setB2Body(body);
sprite->setPTMRatio(PTM_RATIO);
sprite->setPosition( Point( p.x, p.y) );
}
void ColliderDetector::setActive(bool active)
{
if (m_bActive == active)
{
return;
}
m_bActive = active;
if (m_pB2Body)
{
if (active)
{
setB2Body(m_pB2Body);
}
else
{
for(auto object : *m_pColliderBodyList)
{
ColliderBody *colliderBody = (ColliderBody *)object;
b2Fixture *fixture = colliderBody->getB2Fixture();
m_pB2Body->DestroyFixture(fixture);
colliderBody->setB2Fixture(nullptr);
}
}
}
else if (m_pCPBody)
{
if (m_bActive)
{
for(auto object : *m_pColliderBodyList)
{
ColliderBody *colliderBody = (ColliderBody *)object;
cpShape *shape = colliderBody->getShape();
if(shape->space == nullptr)
{
cpSpaceAddShape(m_pCPBody->space, shape);
}
}
}
else
{
for(auto object : *m_pColliderBodyList)
{
ColliderBody *colliderBody = (ColliderBody *)object;
cpShape *shape = colliderBody->getShape();
if (shape->space != nullptr)
{
cpSpaceRemoveShape(m_pCPBody->space, shape);
}
}
}
}
}
inline virtual void registerWithWorld(std::shared_ptr<gecom::WorldProxy> world) {
B2PhysicsComponent::registerWithWorld(world);
b2BodyDef def;
def.type = b2_dynamicBody;
def.fixedRotation = true;
def.position.Set(getParent()->getPosition().x(), getParent()->getPosition().y());
def.linearDamping = 0.6f;
setB2Body(world->createBody(def, shared_from_this()));
auto bbb = std::make_shared<b2PolygonShape>();
bbb->SetAsBox(m_half_width, m_half_height);
auto fix = std::make_shared<b2FixtureDef>();
fix->shape = bbb.get();
fix->density = 130;
fix->friction = 0.99f;
world->createFixture(getBodyID(), fix, bbb);
}
StarPhysicsNode::StarPhysicsNode(const char* f, CCPoint p, AroundMeLayer* layer)
: PhysicsNode(layer) {
m_image = QString(f);
b2BodyDef bd;
bd.type = b2_dynamicBody;
bd.position.Set(p.x / PTM_RATIO, p.y / PTM_RATIO);
bd.userData = this;
b2Body *body = m_world->CreateBody(&bd);
b2Vec2 vertices[3];
{
b2PolygonShape triangle;
vertices[0] = b2Vec2(-3.0f, 0.78f);
vertices[1] = b2Vec2(-1.98f, -0.84f);
vertices[2] = b2Vec2(-1.2f, 1.56f);
triangle.Set(vertices, 3);
b2FixtureDef fixtureDef;
fixtureDef.shape = ▵
fixtureDef.density = 1.0f;
fixtureDef.restitution = 0.5;
fixtureDef.friction = 0.3f;
fixtureDef.filter.categoryBits = CHEERIOS;
body->CreateFixture(&fixtureDef);
}
{
b2PolygonShape triangle;
vertices[0] = b2Vec2(-1.2f, 1.56f);
vertices[1] = b2Vec2(1.2f, 1.56f);
vertices[2] = b2Vec2(0.0f, 3.0f);
triangle.Set(vertices, 3);
b2FixtureDef fixtureDef;
fixtureDef.shape = ▵
fixtureDef.density = 1.0f;
fixtureDef.restitution = 0.5;
fixtureDef.friction = 0.3f;
fixtureDef.filter.categoryBits = CHEERIOS;
body->CreateFixture(&fixtureDef);
}
{
b2PolygonShape triangle;
vertices[0] = b2Vec2(1.2f, 1.56f);
vertices[1] = b2Vec2(1.98f, -0.84f);
vertices[2] = b2Vec2(3.0f, 0.78f);
triangle.Set(vertices, 3);
b2FixtureDef fixtureDef;
fixtureDef.shape = ▵
fixtureDef.density = 1.0f;
fixtureDef.restitution = 0.5;
fixtureDef.friction = 0.3f;
fixtureDef.filter.categoryBits = CHEERIOS;
body->CreateFixture(&fixtureDef);
}
{
b2PolygonShape triangle;
vertices[0] = b2Vec2(1.98f, -0.84f);
vertices[1] = b2Vec2(0.0f, -2.22f);
vertices[2] = b2Vec2(1.8f, -3.0f);
triangle.Set(vertices, 3);
b2FixtureDef fixtureDef;
fixtureDef.shape = ▵
fixtureDef.density = 1.0f;
fixtureDef.restitution = 0.5;
fixtureDef.friction = 0.3f;
fixtureDef.filter.categoryBits = CHEERIOS;
body->CreateFixture(&fixtureDef);
}
{
b2PolygonShape triangle;
vertices[0] = b2Vec2(0.0f, -2.22f);
vertices[1] = b2Vec2(-1.98f, -0.84f);
vertices[2] = b2Vec2(-1.8f, -3.0f);
triangle.Set(vertices, 3);
b2FixtureDef fixtureDef;
fixtureDef.shape = ▵
fixtureDef.density = 1.0f;
fixtureDef.restitution = 0.5;
fixtureDef.friction = 0.3f;
fixtureDef.filter.categoryBits = CHEERIOS;
body->CreateFixture(&fixtureDef);
}
{
b2Vec2 vertices[5];
b2PolygonShape pentagon;
vertices[0] = b2Vec2(-1.98f, -0.84f);
vertices[1] = b2Vec2(0.0f, -2.22f);
vertices[2] = b2Vec2(1.98f, -0.84f);
vertices[3] = b2Vec2(1.2f, 1.56f);
vertices[4] = b2Vec2(-1.2f, 1.56f);
pentagon.Set(vertices, 5);
b2FixtureDef fixtureDef;
fixtureDef.shape = &pentagon;
fixtureDef.density = 1.0f;
fixtureDef.restitution = 0.5;
fixtureDef.friction = 0.3f;
fixtureDef.filter.categoryBits = CHEERIOS;
body->CreateFixture(&fixtureDef);
}
setContentSize(CCSize(WORLD_TO_SCREEN(3*2), WORLD_TO_SCREEN(3*2)));
setScale(WORLD_TO_SCREEN(3) / 100);
setPosition(ccp(p.x, p.y));
setB2Body(body);
m_sprite = CCSprite::create(f);
addChild(m_sprite);
}
