void RigidBody2D::SetMass(float mass, bool recomputeMoment)
{
if (m_mass > 0.f)
{
if (mass > 0.f)
{
m_world->RegisterPostStep(this, [mass, recomputeMoment](Nz::RigidBody2D* body)
{
cpBodySetMass(body->GetHandle(), mass);
if (recomputeMoment)
cpBodySetMoment(body->GetHandle(), body->GetGeom()->ComputeMomentOfInertia(mass));
});
}
else
m_world->RegisterPostStep(this, [](Nz::RigidBody2D* body) { cpBodySetType(body->GetHandle(), (body->IsStatic()) ? CP_BODY_TYPE_STATIC : CP_BODY_TYPE_KINEMATIC); } );
}
else if (mass > 0.f)
{
m_world->RegisterPostStep(this, [mass, recomputeMoment](Nz::RigidBody2D* body)
{
if (cpBodyGetType(body->GetHandle()) != CP_BODY_TYPE_DYNAMIC)
{
cpBodySetType(body->GetHandle(), CP_BODY_TYPE_DYNAMIC);
cpBodySetMass(body->GetHandle(), mass);
if (recomputeMoment)
cpBodySetMoment(body->GetHandle(), body->GetGeom()->ComputeMomentOfInertia(mass));
}
});
}
m_mass = mass;
}
cpSpace*
cpSpaceInit(cpSpace *space)
{
#ifndef NDEBUG
static cpBool done = cpFalse;
if(!done){
printf("Initializing cpSpace - Chipmunk v%s (Debug Enabled)\n", cpVersionString);
printf("Compile with -DNDEBUG defined to disable debug mode and runtime assertion checks\n");
done = cpTrue;
}
#endif
space->iterations = 10;
space->gravity = cpvzero;
space->damping = 1.0f;
space->collisionSlop = 0.1f;
space->collisionBias = cpfpow(1.0f - 0.1f, 60.0f);
space->collisionPersistence = 3;
space->locked = 0;
space->stamp = 0;
space->shapeIDCounter = 0;
space->staticShapes = cpBBTreeNew((cpSpatialIndexBBFunc)cpShapeGetBB, NULL);
space->dynamicShapes = cpBBTreeNew((cpSpatialIndexBBFunc)cpShapeGetBB, space->staticShapes);
cpBBTreeSetVelocityFunc(space->dynamicShapes, (cpBBTreeVelocityFunc)ShapeVelocityFunc);
space->allocatedBuffers = cpArrayNew(0);
space->dynamicBodies = cpArrayNew(0);
space->staticBodies = cpArrayNew(0);
space->sleepingComponents = cpArrayNew(0);
space->rousedBodies = cpArrayNew(0);
space->sleepTimeThreshold = INFINITY;
space->idleSpeedThreshold = 0.0f;
space->arbiters = cpArrayNew(0);
space->pooledArbiters = cpArrayNew(0);
space->contactBuffersHead = NULL;
space->cachedArbiters = cpHashSetNew(0, (cpHashSetEqlFunc)arbiterSetEql);
space->constraints = cpArrayNew(0);
space->usesWildcards = cpFalse;
space->defaultHandler = cpCollisionHandlerDoNothing;
space->collisionHandlers = cpHashSetNew(0, (cpHashSetEqlFunc)handlerSetEql);
space->postStepCallbacks = cpArrayNew(0);
space->skipPostStep = cpFalse;
cpBody *staticBody = cpBodyInit(&space->_staticBody, 0.0f, 0.0f);
cpBodySetType(staticBody, CP_BODY_TYPE_STATIC);
cpSpaceSetStaticBody(space, staticBody);
return space;
}
void RigidBody2D::SetStatic(bool setStaticBody)
{
m_isStatic = setStaticBody;
m_world->RegisterPostStep(this, [](Nz::RigidBody2D* body)
{
if (body->IsStatic())
{
cpBodySetType(body->GetHandle(), CP_BODY_TYPE_STATIC);
cpSpaceReindexShapesForBody(body->GetWorld()->GetHandle(), body->GetHandle());
}
else if (cpBodyGetMass(body->GetHandle()) > 0.f)
cpBodySetType(body->GetHandle(), CP_BODY_TYPE_KINEMATIC);
else
cpBodySetType(body->GetHandle(), CP_BODY_TYPE_DYNAMIC);
});
}
void PhysicsBody::setDynamic(bool dynamic)
{
if (dynamic != _dynamic)
{
_dynamic = dynamic;
if (dynamic)
{
cpBodySetType(_cpBody, CP_BODY_TYPE_DYNAMIC);
internalBodySetMass(_cpBody, _mass);
cpBodySetMoment(_cpBody, _moment);
}
else
{
cpBodySetType(_cpBody, CP_BODY_TYPE_KINEMATIC);
}
}
}
cpBody* RigidBody2D::Create(float mass, float moment)
{
cpBody* handle = cpBodyNew(mass, moment);
cpBodySetUserData(handle, this);
if (mass <= 0.f)
cpBodySetType(handle, CP_BODY_TYPE_KINEMATIC);
cpSpaceAddBody(m_world->GetHandle(), handle);
return handle;
}
void menu_init(Entity *ent) {
cpBodySetType(entity_body(ent), CP_BODY_TYPE_KINEMATIC);
MenuEntityData *data = entity_data(ent);
ALLEGRO_PATH *path = game_asset_path("logo.png");
data->logo = al_load_bitmap(al_path_cstr(path, ALLEGRO_NATIVE_PATH_SEP));
al_destroy_path(path);
textbox_init(&data->server, 64);
textbox_init(&data->port, 8);
data->server.text_flags = TEXT_HALIGN_LEFT;
data->server.caret_width = 0.1;
data->server.font_size = MENU_FONT_SIZE;
data->server.focus = true;
data->port.text_flags = TEXT_HALIGN_LEFT;
data->port.caret_width = 0.1;
data->port.font_size = MENU_FONT_SIZE;
game.camera_position = cpvzero;
}