/// <summary>
/// Resolve and add all bindings and actions from the given map.
/// </summary>
/// <param name="map"></param>
/// <exception cref="Exception"></exception>
public void AddActionMap(InputActionMap map)
{
Debug.Assert(map != null);
Debug.Assert(map.m_MapIndex == InputActionMapState.kInvalidIndex);
// Keep track of indices for this map.
var bindingStartIndex = totalBindingCount;
var controlStartIndex = totalControlCount;
var interactionStartIndex = totalInteractionCount;
var processorStartIndex = totalProcessorCount;
var compositeStartIndex = totalCompositeCount;
var actionStartIndex = totalActionCount;
// Allocate binding states.
var bindingsInThisMap = map.m_Bindings;
var bindingCountInThisMap = bindingsInThisMap != null ? bindingsInThisMap.Length : 0;
totalBindingCount += bindingCountInThisMap;
ArrayHelpers.GrowBy(ref bindingStates, totalBindingCount);
////TODO: make sure composite objects get all the bindings they need
////TODO: handle case where we have bindings resolving to the same control
//// (not so clear cut what to do there; each binding may have a different interaction setup, for example)
var currentCompositeIndex = InputActionMapState.kInvalidIndex;
var actionsInThisMap = map.m_Actions;
var actionCountInThisMap = actionsInThisMap != null ? actionsInThisMap.Length : 0;
for (var n = 0; n < bindingCountInThisMap; ++n)
{
var unresolvedBinding = bindingsInThisMap[n];
// Skip binding if it is disabled (path is empty string).
var path = unresolvedBinding.effectivePath;
if (unresolvedBinding.path == "")
{
continue;
}
// Try to find action.
var actionIndex = InputActionMapState.kInvalidIndex;
var actionName = unresolvedBinding.action;
if (!string.IsNullOrEmpty(actionName))
{
actionIndex = map.TryGetActionIndex(actionName);
}
else if (map.m_SingletonAction != null)
{
// Special-case for singleton actions that don't have names.
actionIndex = 0;
}
// Instantiate processors.
var firstProcessorIndex = 0;
var numProcessors = 0;
var processors = unresolvedBinding.effectiveProcessors;
if (!string.IsNullOrEmpty(processors))
{
firstProcessorIndex = ResolveProcessors(processors);
if (processors != null)
{
numProcessors = totalProcessorCount - firstProcessorIndex;
}
}
////TODO: allow specifying parameters for composite on its path (same way as parameters work for interactions)
// If it's the start of a composite chain, create the composite.
if (unresolvedBinding.isComposite)
{
////REVIEW: what to do about interactions on composites?
// Instantiate. For composites, the path is the name of the composite.
var composite = InstantiateBindingComposite(unresolvedBinding.path);
currentCompositeIndex =
ArrayHelpers.AppendWithCapacity(ref composites, ref totalCompositeCount, composite);
bindingStates[bindingStartIndex + n] = new InputActionMapState.BindingState
{
actionIndex = actionIndex,
compositeIndex = currentCompositeIndex,
processorStartIndex = firstProcessorIndex,
processorCount = numProcessors,
mapIndex = totalMapCount,
};
// The composite binding entry itself does not resolve to any controls.
// It creates a composite binding object which is then populated from
// subsequent bindings.
continue;
}
// If we've reached the end of a composite chain, finish
// off the current composite.
if (!unresolvedBinding.isPartOfComposite && currentCompositeIndex != InputActionMapState.kInvalidIndex)
{
currentCompositeIndex = InputActionMapState.kInvalidIndex;
}
// Look up controls.
var firstControlIndex = totalControlCount;
if (controls == null)
{
controls = new InputControl[10];
}
var resolvedControls = new ArrayOrListWrapper <InputControl>(controls, totalControlCount);
var numControls = InputSystem.GetControls(path, ref resolvedControls);
controls = resolvedControls.array;
totalControlCount = resolvedControls.count;
// Instantiate interactions.
var firstInteractionIndex = 0;
var numInteractions = 0;
var interactions = unresolvedBinding.effectiveInteractions;
if (!string.IsNullOrEmpty(interactions))
{
firstInteractionIndex = ResolveInteractions(interactions);
if (interactionStates != null)
{
numInteractions = totalInteractionCount - firstInteractionIndex;
}
}
// Add entry for resolved binding.
bindingStates[bindingStartIndex + n] = new InputActionMapState.BindingState
{
controlStartIndex = firstControlIndex,
controlCount = numControls,
interactionStartIndex = firstInteractionIndex,
interactionCount = numInteractions,
processorStartIndex = firstProcessorIndex,
processorCount = numProcessors,
isPartOfComposite = unresolvedBinding.isPartOfComposite,
actionIndex = actionIndex,
compositeIndex = currentCompositeIndex,
mapIndex = totalMapCount,
};
// If the binding is part of a composite, pass the resolve controls
// on to the composite.
if (unresolvedBinding.isPartOfComposite && currentCompositeIndex != InputActionMapState.kInvalidIndex && numControls != 0)
{
////REVIEW: what should we do when a single binding in a composite resolves to multiple controls?
//// if the composite has more than one bindable control, it's not readily apparent how we would group them
if (numControls > 1)
{
throw new NotImplementedException("Handling case where single binding in composite resolves to multiple controls");
}
// Make sure the binding is named. The name determines what in the composite
// to bind to.
if (string.IsNullOrEmpty(unresolvedBinding.name))
{
throw new Exception(string.Format(
"Binding that is part of composite '{0}' is missing a name",
composites[currentCompositeIndex]));
}
// Install the control on the binding.
BindControlInComposite(composites[currentCompositeIndex], unresolvedBinding.name,
controls[firstControlIndex]);
}
}
// Set up control to binding index mapping.
var controlCountInThisMap = totalControlCount - controlStartIndex;
ArrayHelpers.GrowBy(ref controlIndexToBindingIndex, controlCountInThisMap);
for (var i = 0; i < bindingCountInThisMap; ++i)
{
var numControls = bindingStates[bindingStartIndex + i].controlCount;
var startIndex = bindingStates[bindingStartIndex + i].controlStartIndex;
for (var n = 0; n < numControls; ++n)
{
controlIndexToBindingIndex[startIndex + n] = i;
}
}
// Store indices for map.
var numMaps = totalMapCount;
var mapIndex = ArrayHelpers.AppendWithCapacity(ref maps, ref numMaps, map);
ArrayHelpers.AppendWithCapacity(ref mapIndices, ref totalMapCount, new InputActionMapState.ActionMapIndices
{
actionStartIndex = actionStartIndex,
actionCount = actionCountInThisMap,
controlStartIndex = controlStartIndex,
controlCount = controlCountInThisMap,
bindingStartIndex = bindingStartIndex,
bindingCount = bindingCountInThisMap,
interactionStartIndex = interactionStartIndex,
interactionCount = totalInteractionCount - interactionStartIndex,
processorStartIndex = processorStartIndex,
processorCount = totalProcessorCount - processorStartIndex,
compositeStartIndex = compositeStartIndex,
compositeCount = totalCompositeCount - compositeStartIndex,
});
map.m_MapIndex = mapIndex;
// Allocate action states.
if (actionCountInThisMap > 0)
{
// Assign action indices.
var actions = map.m_Actions;
for (var i = 0; i < actionCountInThisMap; ++i)
{
actions[i].m_ActionIndex = totalActionCount + i;
}
ArrayHelpers.GrowBy(ref actionStates, actionCountInThisMap);
totalActionCount += actionCountInThisMap;
for (var i = 0; i < actionCountInThisMap; ++i)
{
actionStates[i].mapIndex = mapIndex;
}
}
}