void Chip8CPU::Reset()
{
// Get the current time to use as seed for RNG and as
// init for DT and ST decrement.
const auto now = Chip8Helper::GetNowDuration();
InitializeRegisters();
lastStepTime_ = now;
ResetTimerDecrement();
assert(InitializeDefaultSprites());
// Seed the CPU random number generator with current time.
rnd_ = std::mt19937(static_cast<unsigned int>(now.count()));
display_.Reset(CHIP8_DISPLAY_WIDTH, CHIP8_DISPLAY_HEIGHT);
isInHiresMode_ = false;
if (beeper_ != nullptr)
{
// Make sure the beeper isn't already beeping.
beeper_->SetBeeping(false);
}
isWaitingForInput_ = false;
lastOp_ = 0;
}
b2Contact* b2Contact::Create(b2Fixture* fixtureA, int32 indexA, b2Fixture* fixtureB, int32 indexB, b2BlockAllocator* allocator)
{
if (s_initialized == false)
{
InitializeRegisters();
s_initialized = true;
}
b2Shape::Type type1 = fixtureA->GetType();
b2Shape::Type type2 = fixtureB->GetType();
b2Assert(0 <= type1 && type1 < b2Shape::e_typeCount);
b2Assert(0 <= type2 && type2 < b2Shape::e_typeCount);
b2ContactCreateFcn* createFcn = s_registers[type1][type2].createFcn;
if (createFcn)
{
if (s_registers[type1][type2].primary)
{
return createFcn(fixtureA, indexA, fixtureB, indexB, allocator);
}
else
{
return createFcn(fixtureB, indexB, fixtureA, indexA, allocator);
}
}
else
{
return NULL;
}
}
