/// formulate array of changed dynamic recorder object states
/// for storage with delta compression
private DynamicDeltaState[] RecordDynamicStates(
DynamicRecorder[] dynamics)
{
// how many states have changed?
int numChanged = 0;
for (int i = 0; i < dynamics.Length; i++)
{
dynamics[i].CheckForChanges();
if (dynamics[i].StateHasChanged())
{
numChanged++;
}
}
// record those changes
DynamicDeltaState[] deltas = new DynamicDeltaState[numChanged];
for (int i = 0, j = 0; i < dynamics.Length; i++)
{
if (dynamics[i].StateHasChanged())
{
DynamicState state = dynamics[i].LastState();
deltas[j++] =
new DynamicDeltaState(i, state.position, state.velocity);
}
}
return(deltas);
}
/// Apply this frame's information to these replayer objects
/// so that they match the frame
public void Apply(
DynamicReplayer[] dynamics, StaticReplayer[] statics)
{
// apply dynamic states from this frame
for (int i = 0; i < this.dynamics.Length; i++)
{
DynamicDeltaState state = this.dynamics[i];
dynamics[state.index].SetState(new DynamicState(
new Vector2(state.positionX, state.positionY),
new Vector2(state.velocityX, state.velocityY)
));
}
// apply static states from this frame
for (int i = 0; i < this.statics.Length; i++)
{
BooleanDeltaState state = this.statics[i];
statics[state.index].SetState(state.state);
}
}