public static void DrawTransitions(AnimationPlayer animationPlayer, PersistedInt selectedLayer, PersistedInt selectedStateIdx,
PersistedInt selectedToStateIdx, string[] stateNamesInLayer)
{
var layer = animationPlayer.layers[selectedLayer];
if (layer.states.Count == 0)
{
EditorGUILayout.LabelField("No states, can't define transitions");
return;
}
var selectedState = layer.states[selectedStateIdx];
var selectedToState = layer.states[selectedToStateIdx];
var selectedTransition = layer.transitions.Find(t => t.FromState == selectedState && t.ToState == selectedToState);
var fromStateName = selectedState.Name;
var toStateName = selectedToState.Name;
if (selectedTransition != null)
{
EditorGUILayout.LabelField($"Selected transition: From \"{fromStateName}\" to \"{toStateName}\"");
EditorUtilities.RecordUndo(animationPlayer, $"Edit of transition from {fromStateName} to {toStateName}");
EditorUtilities.DrawIndented(() =>
{
selectedTransition.transitionData = DrawTransitionData(selectedTransition.transitionData);
GUILayout.Space(20f);
EditorGUILayout.BeginHorizontal();
GUILayout.FlexibleSpace();
if (EditorUtilities.AreYouSureButton("Clear transition", "Are you sure?",
"Clear_Transition_" + fromStateName + "_" + toStateName,
1f, GUILayout.Width(150f)))
{
EditorUtilities.RecordUndo(animationPlayer, $"Clear transition from {fromStateName} to {toStateName}");
layer.transitions.Remove(selectedTransition);
}
EditorGUILayout.EndHorizontal();
});
}
EditorUtilities.Splitter();
var transitionsFromState = layer.transitions.Where(t => t.FromState == selectedState).ToList();
if (transitionsFromState.Count == 0)
{
EditorGUILayout.LabelField($"No defined transitions from {fromStateName}");
}
else
{
EditorGUILayout.LabelField($"Transitions from {fromStateName}:");
EditorGUILayout.Space();
EditorUtilities.DrawHorizontal(() =>
{
GUILayout.FlexibleSpace();
EditorUtilities.DrawVertical(() =>
{
EditorUtilities.DrawIndented(() =>
{
foreach (var transition in transitionsFromState)
{
EditorGUI.BeginDisabledGroup(transition == selectedTransition);
if (GUILayout.Button(transition.ToState.Name, GUILayout.MinWidth(100f)))
{
selectedToStateIdx.SetTo(layer.states.IndexOf(transition.ToState));
}
EditorGUI.EndDisabledGroup();
}
});
});
});
}
EditorGUILayout.Space();
EditorUtilities.DrawHorizontal(() =>
{
GUILayout.FlexibleSpace();
if (GUILayout.Button("Create new transition"))
{
GenericMenu menu = new GenericMenu();
foreach (var state in stateNamesInLayer)
{
menu.AddItem(new GUIContent($"Transition from {fromStateName} to {state}"), false, () =>
{
EditorUtilities.RecordUndo(animationPlayer, $"Adding transition from {fromStateName} to {toStateName}");
var newState = new StateTransition
{
FromState = selectedState,
ToState = layer.states.Find(s => s.Name == state),
transitionData = TransitionData.Linear(.2f)
};
layer.transitions.Add(newState);
selectedToStateIdx.SetTo(layer.states.FindIndex(s => s.Name == state));
});
}
menu.ShowAsContext();
}
});
}