private int m_TargetId = 0; // id of the last modified state (for triggering enable / disable callbacks)
/// <summary>
/// manages a list of states and corresponding presets for a
/// component. loads the presets into memory on startup, and
/// allows applying them from memory to the component.
/// states are enabled in a layered manner, that is: the
/// default state is always alive, and any enabled states are
/// applied on top of it in the order of which they were enabled.
///
/// this class doesn't store any preset data between sessions.
/// it is merely used to manipulate the component using a list
/// of states that is sent along at startup. it is very silent
/// and forgiving; it won't complain if a state isn't found
/// (since providing a certain state should not be considered
/// mandatory for a component, and states can be set recursively).
/// it will also ignore empty presets
/// </summary>
public vp_AIStateManager(vp_AIComponent component, List <vp_AIState> states)
{
m_States = states;
m_Component = component;
// create default state and add it to the list
m_Component.RefreshDefaultState();
// refresh the initial state, needed for being able to save
// partial presets in the editor
#if UNITY_EDITOR
m_Component.RefreshInitialState();
#endif
// load states and initialize the state id dictionary
m_StateIds = new Dictionary <string, int>(System.StringComparer.CurrentCulture);
foreach (vp_AIState s in m_States)
{
s.StateManager = this;
// store the name and list index of each state in a dictionary for
// fast lookup. IMPORTANT: the state list (m_States) must never be
// modified at runtime (i.e. have states reordered, added, renamed
// or removed) or the dictionary (m_StateIds) will be out of date
if (!m_StateIds.ContainsKey(s.Name))
{
m_StateIds.Add(s.Name, m_States.IndexOf(s));
}
else
{
Debug.LogWarning("Warning: " + m_Component.GetType() + " on '" + m_Component.name + "' has more than one state named: '" + s.Name + "'. Only the topmost one will be used.");
m_States[m_DefaultId].StatesToBlock.Add(m_States.IndexOf(s));
}
// load up the preset of each user assigned state and
if (s.Preset == null)
{
s.Preset = new vp_AIComponentPreset();
}
if (s.TextAsset != null)
{
s.Preset.LoadFromTextAsset(s.TextAsset);
}
}
// the default state of a component is always the last one in the list
m_DefaultId = m_States.Count - 1;
}
/// <summary>
/// draws a field allowing the user to create, reorganize,
/// name, assign presets to and delete states on a component
/// </summary>
public static bool StateFoldout(bool foldout, vp_AIComponent component, List <vp_AIState> stateList, vp_AIComponentPersister persister = null)
{
bool before = foldout;
foldout = EditorGUILayout.Foldout(foldout,
(foldout && !Application.isPlaying) ? "State Preset" : "States"
);
if (foldout != before)
{
m_ShowBlockListFor = null;
component.RefreshDefaultState();
}
if (foldout)
{
if (m_ShowBlockListFor != null)
{
if (!stateList.Contains(m_ShowBlockListFor))
{
foldout = false;
}
}
}
if (foldout)
{
for (int v = 0; v < stateList.Count; v++)
{
vp_AIState s = stateList[v];
if (!Application.isPlaying)
{
vp_AIPresetEditorGUIUtility.StateField(s, stateList, component);
if ((m_ShowBlockListFor != null) && m_ShowBlockListFor == s)
{
StateBlockList(component, s);
}
}
else
{
vp_AIPresetEditorGUIUtility.RunTimeStateField(component, s, stateList);
}
}
GUILayout.BeginHorizontal();
if (!Application.isPlaying)
{
if (GUILayout.Button("Add State", GUILayout.MinWidth(90), GUILayout.MaxWidth(90)))
{
m_ShowBlockListFor = null;
string newStateName = "Untitled";
int n = 1;
while (GetStateId(component, newStateName) != -1)
{
n++;
newStateName = newStateName.Substring(0, 8) + (n < 10?"0":"") + n.ToString();
}
stateList.Add(new vp_AIState(component.GetType().Name, newStateName, ""));
component.RefreshDefaultState();
EditorUtility.SetDirty(component);
}
}
else
{
GUI.color = Color.clear;
GUILayout.Button("", GUILayout.MinWidth(36), GUILayout.MaxWidth(36));
GUI.color = Color.white;
}
if (!Application.isPlaying)
{
GUILayout.EndHorizontal();
}
if (persister != null)
{
vp_AIPresetEditorGUIUtility.PersistToggle(persister);
}
if (Application.isPlaying)
{
GUILayout.EndHorizontal();
}
vp_EditorGUIUtility.Separator();
}
return(foldout);
}