koobas.hobune.stream
Mask field in the editor
How do i make a mask selection popup like the layer selection popup you get in the inspector for any LayerMask, except for my own mask object.
EnumPopup is almost right but does not allow multiple selection.
var mask : LayerMask;
No I meant my own mask type. Layer$$anonymous$$ask will give me the layer options. I want my own custom options.
In that case I guess you'd have to write your own function for that.
That's disappointing as the functionality is already written for the layermask selection... oh well I guess I'll do this at some point.
I've written some code for this, unfortunately I cannot use the √ character to indicate a selected layer, I have to use [X] instead which looks a bit ugly. But it works. It does even support the Everything and Nothing selections (that's the 'showSpecial' flag).
public static LayerMask LayerMaskField (string label, LayerMask selected) {
return LayerMaskField (label,selected,true);
}
public static LayerMask LayerMaskField (string label, LayerMask selected, bool showSpecial) {
List<string> layers = new List<string>();
List<int> layerNumbers = new List<int>();
string selectedLayers = "";
for (int i=0;i<32;i++) {
string layerName = LayerMask.LayerToName (i);
if (layerName != "") {
if (selected == (selected | (1 << i))) {
if (selectedLayers == "") {
selectedLayers = layerName;
} else {
selectedLayers = "Mixed";
}
}
}
}
EventType lastEvent = Event.current.type;
if (Event.current.type != EventType.MouseDown && Event.current.type != EventType.ExecuteCommand) {
if (selected.value == 0) {
layers.Add ("Nothing");
} else if (selected.value == -1) {
layers.Add ("Everything");
} else {
layers.Add (selectedLayers);
}
layerNumbers.Add (-1);
}
if (showSpecial) {
layers.Add ((selected.value == 0 ? "[X] " : " ") + "Nothing");
layerNumbers.Add (-2);
layers.Add ((selected.value == -1 ? "[X] " : " ") + "Everything");
layerNumbers.Add (-3);
}
for (int i=0;i<32;i++) {
string layerName = LayerMask.LayerToName (i);
if (layerName != "") {
if (selected == (selected | (1 << i))) {
layers.Add ("[X] "+layerName);
} else {
layers.Add (" "+layerName);
}
layerNumbers.Add (i);
}
}
bool preChange = GUI.changed;
GUI.changed = false;
int newSelected = 0;
if (Event.current.type == EventType.MouseDown) {
newSelected = -1;
}
newSelected = EditorGUILayout.Popup (label,newSelected,layers.ToArray(),EditorStyles.layerMaskField);
if (GUI.changed && newSelected >= 0) {
//newSelected -= 1;
Debug.Log (lastEvent +" "+newSelected + " "+layerNumbers[newSelected]);
if (showSpecial && newSelected == 0) {
selected = 0;
} else if (showSpecial && newSelected == 1) {
selected = -1;
} else {
if (selected == (selected | (1 << layerNumbers[newSelected]))) {
selected &= ~(1 << layerNumbers[newSelected]);
//Debug.Log ("Set Layer "+LayerMask.LayerToName (LayerNumbers[newSelected]) + " To False "+selected.value);
} else {
//Debug.Log ("Set Layer "+LayerMask.LayerToName (LayerNumbers[newSelected]) + " To True "+selected.value);
selected = selected | (1 << layerNumbers[newSelected]);
}
}
} else {
GUI.changed = preChange;
}
return selected;
}
Awesome, thank you I'll give it a try. Only I wanted this popup for any enum mask type. I'll see if I can modify this to do what I need. Thanks.
I don't know if this will be of use to you, but please check my answer below. This might be a new feature of Unity which wasn't available previously.
You can also create custom popup menus: http://unity3d.com/support/documentation/ScriptReference/Generic$$anonymous$$enu.html
Unfortunately I cannot give you a "+" yet, but I really wanted to thank you for this solution!
This can now be done without any custom editor classes with the [Flags] attribute:
using System;
[System.Flags]
public enum MyEnum
{
Nothing = 0,
Val1 = 1,
Val2 = 2,
Val3 = 4,
Val4 = 8
Everything = 0b1111
}
And your class/struct:
[System.Serializable]
public struct MyStruct
{
public MyEnum myValue;
}
Result:
I didn't include it as Flags is not ambiguous in the context, but you're right—much better to be explicit, especially on an answers page. I've updated the answer to use System.Flags. Thanks!
What about the EditorGUILayout.EnumMaskField? http://unity3d.com/support/documentation/ScriptReference/EditorGUILayout.EnumMaskField.html
Another option might be EditorGUILayout.MaskField if you want to define custom strings: http://unity3d.com/support/documentation/ScriptReference/EditorGUILayout.MaskField.html
Note: Specifying null seems to insert horizontal splitter (at expense of a flag)
I believe this is what your looking for: http://wiki.unity3d.com/index.php/EnumFlagPropertyDrawer
Turn your enum into a multi flag selection variable ;)
