/** Sets the current ball possessor */
void AMagicBattleSoccerBall::SetPossessor(AMagicBattleSoccerCharacter* Player)
{
if (Role < ROLE_Authority)
{
// Safety check. Only authority entities should drive the ball.
}
else
{
// We only allow a possession change if the ball is being unpossessed or the player is not one we're ignoring
if (nullptr == Player || (CanPossessBall(Player) && (PossessorToIgnore != Player)))
{
AMagicBattleSoccerCharacter *OldPossessor = Possessor;
// Assign the new possessor
Possessor = Player;
// Handle cases when the ball had a possessor in the previous frame
if (nullptr != OldPossessor)
{
// Assign the last possessor
LastPossessor = OldPossessor;
// Assign the possessor to ignore
PossessorToIgnore = OldPossessor;
}
// Toggle physics
UPrimitiveComponent *Root = Cast<UPrimitiveComponent>(GetRootComponent());
if (nullptr != Possessor)
{
Possessor->StopWeaponFire(Possessor->PrimaryWeapon);
Possessor->StopWeaponFire(Possessor->SecondaryWeapon);
Root->PutRigidBodyToSleep();
Root->SetSimulatePhysics(false);
Root->SetEnableGravity(false);
SetActorEnableCollision(false);
MoveWithPossessor();
}
else
{
Root->SetSimulatePhysics(true);
Root->SetEnableGravity(true);
SetActorEnableCollision(true);
Root->PutRigidBodyToSleep();
}
}
// Force the orientation to be replicated at the same time the possessor is replicated
UPrimitiveComponent *Root = Cast<UPrimitiveComponent>(GetRootComponent());
ServerPhysicsState.pos = GetActorLocation();
ServerPhysicsState.rot = GetActorRotation();
ServerPhysicsState.vel = Root->GetComponentVelocity();
ServerPhysicsState.timestamp = AMagicBattleSoccerPlayerController::GetLocalTime();
}
}
void AMagicBattleSoccerBall::Tick(float DeltaSeconds)
{
Super::Tick(DeltaSeconds);
if (nullptr != Possessor)
{
// If the ball is possessed by a player, then the ball should move as a function
// of the possessor
MoveWithPossessor();
}
else
{
// No possessor. The ball is freely moving.
if (Role < ROLE_Authority)
{
// Clients should update its local position based on where it is on the server
ClientSimulateFreeMovingBall();
}
else
{
// Update the charging value
if (GetVelocity().SizeSquared() > 1.f)
{
IsCharging = false;
}
// Servers should simulate the ball physics freely and replicate the orientation
UPrimitiveComponent *Root = Cast<UPrimitiveComponent>(GetRootComponent());
ServerPhysicsState.pos = GetActorLocation();
ServerPhysicsState.rot = GetActorRotation();
ServerPhysicsState.vel = Root->GetComponentVelocity();
ServerPhysicsState.timestamp = AMagicBattleSoccerPlayerController::GetLocalTime();
// Servers should also test the distance from the old possessor and reset it
if (nullptr != PossessorToIgnore)
{
if (!PossessorToIgnore->IsAlive())
{
PossessorToIgnore = nullptr;
}
else
{
FVector2D PossessorLoc(PossessorToIgnore->GetActorLocation());
FVector2D BallLoc(GetActorLocation());
float d = FVector2D::DistSquared(PossessorLoc, BallLoc);
if (d > 14000)
{
PossessorToIgnore = nullptr;
}
}
}
}
}
}
