/// <summary>
/// Checks the current gamestate and checks if the animation layer should be triggered.
/// Note will also have the side-effect of updating _previousTriggerValue so this should not be called
/// more than once per frame.
/// </summary>
private void CheckTriggers(IGameState gamestate)
{
if (Properties.TriggerMode == AnimationTriggerMode.AlwaysOn)
{
// Should return true if it has not already been played OR it is allowed to repeat indefinately
// Should also not try to get a value from the state
if (Properties.AnimationRepeat == 0)
{
StartAnimation(); // Always true if infinite repeats
}
else if (!_alwaysOnHasPlayed)
{
_alwaysOnHasPlayed = true; // True if it has not been played
StartAnimation();
}
// Handling for key-based triggers
}
else if (Properties.TriggerMode == AnimationTriggerMode.WhileKeyHeld)
{
// If we are in "while held down" mode, check to see if any of the keys pressed do not currently
// have an animation with them as the assigned key. If not, create trigger it
foreach (var key in _pressedKeys.Where(k => !runningAnimations.Any(a => a.assignedKey == k)))
{
StartAnimation(key);
}
// Handling for numeric value change based triggers
}
else if (IsTriggerNumericValueBased(Properties.TriggerMode))
{
// Check to see if a gamestate value change should trigger the animation
double resolvedTriggerValue = GameStateUtils.TryGetDoubleFromState(gamestate, Properties.TriggerPath);
switch (Properties.TriggerMode)
{
case AnimationTriggerMode.OnChange:
if (resolvedTriggerValue != _previousTriggerDoubleValue)
{
StartAnimation();
}
break;
case AnimationTriggerMode.OnHigh:
if (resolvedTriggerValue > _previousTriggerDoubleValue)
{
StartAnimation();
}
break;
case AnimationTriggerMode.OnLow:
if (resolvedTriggerValue < _previousTriggerDoubleValue)
{
StartAnimation();
}
break;
}
_previousTriggerDoubleValue = resolvedTriggerValue;
// Handling for boolean value based triggers
}
else
{
bool resolvedTriggerValue = GameStateUtils.TryGetBoolFromState(gamestate, Properties.TriggerPath);
switch (Properties.TriggerMode)
{
case AnimationTriggerMode.OnTrue:
if (resolvedTriggerValue && !_previousTriggerBoolValue)
{
StartAnimation();
}
break;
case AnimationTriggerMode.OnFalse:
if (!resolvedTriggerValue && _previousTriggerBoolValue)
{
StartAnimation();
}
break;
case AnimationTriggerMode.WhileTrue:
if (resolvedTriggerValue && runningAnimations.Count == 0)
{
StartAnimation();
}
break;
}
_previousTriggerBoolValue = resolvedTriggerValue;
}
}
/// <summary>Parses the numbers, compares the result, and returns the result.</summary> public double Evaluate(IGameState gameState) => GameStateUtils.TryGetDoubleFromState(gameState, VariablePath);
