public static void ApplyStates <StateType>(
List <StateType> oldStates, List <StateType> newStates,
Func <StateType, StateType, bool> doStatesHaveSameId,
Action <StateType> removeStateObject,
Action <StateType> addStateObject,
Action <StateType, StateType> updateStateObject
)
{
List <StateType> removedStates, addedStates, updatedStates;
ListExtensions.GetChanges(
oldStates, newStates, doStatesHaveSameId,
out removedStates, out addedStates, out updatedStates
);
// Despawn weapon objects.
foreach (var removedState in removedStates)
{
removeStateObject(removedState);
}
// Spawn weapon objects.
foreach (var addedState in addedStates)
{
addStateObject(addedState);
}
// Update existing weapon objects.
foreach (var updatedState in updatedStates)
{
var oldState = oldStates.First(os => doStatesHaveSameId(os, updatedState));
updateStateObject(oldState, updatedState);
}
}
