// Calculate x-coordinates for actors
private void SpecifyPositions(List <int> actorsIndices, ActorScreenPositionType regionType)
{
float regionLeft = GetRegionLeft(regionType), regionRight = GetRegionRight(regionType);
float left = regionLeft, right = regionLeft;
int leftIndex = 0, rightIndex = 0;
for (int i = 0; i <= actorsIndices.Count; i++)
{
if (i == actorsIndices.Count)
{
rightIndex = actorsIndices.Count;
right = regionRight;
}
if (rightIndex > leftIndex)
{
float actorRegionWidth = (right - left) / (rightIndex - leftIndex);
// find positions for actors from leftIndex (including) to rightIndex (not including)
for (int j = leftIndex; j < rightIndex; j++)
{
_allActors[actorsIndices[j]].Position.x = left + actorRegionWidth * (j + 0.5f);
}
leftIndex = rightIndex + 1;
}
}
}
// Consider which actors are new and which must be removed
private void PrepareActors(List <ActorState> actorStates, out bool mustChangeArrangement)
{
_removedActorsIndices.Clear();
mustChangeArrangement = false;
foreach (var actorState in actorStates)
{
if (!Field.FieldExists(actorState.fields, ActorArrangementActionFieldName))
{
continue;
}
string actionTypeString = Field.LookupValue(actorState.fields, ActorArrangementActionFieldName);
ActorArrangementActionType actionType = (ActorArrangementActionType)Enum.Parse(typeof(ActorArrangementActionType), actionTypeString);
// Manage actor infos
switch (actionType)
{
case ActorArrangementActionType.None:
break;
case ActorArrangementActionType.ChangePosition:
if (!_actorIdToIndex.ContainsKey(actorState.ActorID))
{
AddActor(actorState.ActorID);
mustChangeArrangement = true;
}
Assert.IsTrue(_actorIdToIndex.ContainsKey(actorState.ActorID), "Arrangement with type 'changePosition' is applied to the absent actor");
ActorInfo actorInfo = _allActors[_actorIdToIndex[actorState.ActorID]];
Assert.IsTrue(Field.FieldExists(actorState.fields, PositionTypeFieldName), "Actor state doesn't have Position Type field when it's needed");
string positionTypeString = Field.LookupValue(actorState.fields, PositionTypeFieldName);
ActorScreenPositionType positionType = (ActorScreenPositionType)Enum.Parse(typeof(ActorScreenPositionType), positionTypeString);
if (actorInfo.PositionType != positionType)
{
mustChangeArrangement = true;
}
// Update actorInfo
actorInfo.PositionType = positionType;
break;
case ActorArrangementActionType.Leave:
DeleteActor(actorState.ActorID);
mustChangeArrangement = true;
break;
default:
Assert.IsTrue(false);
break;
}
}
}
// Right boundary of screen region
private float GetRegionRight(ActorScreenPositionType regionType)
{
switch (regionType)
{
case ActorScreenPositionType.Left:
return(GetCenterLeft());
case ActorScreenPositionType.Center:
return(GetCenterRight());
case ActorScreenPositionType.Right:
return(_boundaries.xMax);
default:
Assert.IsTrue(false);
return(0f);
}
}
// Get default x-coordinate for positionType
private float GetDefaultPosition(ActorScreenPositionType positionType)
{
switch (positionType)
{
case ActorScreenPositionType.Left:
return(_boundaries.xMin);
case ActorScreenPositionType.Center:
return((_boundaries.xMax + _boundaries.xMin) / 2);
case ActorScreenPositionType.Right:
return(_boundaries.xMax);
default:
Assert.IsTrue(false);
return(0f);
}
}
