A game about forced loneliness, made by TACStudios
tacstudios.tngl.sh
1using UnityEngine;
2using UnityEditor.EditorTools;
3using UnityEditor;
4
5[EditorTool("Light Placement Tool", typeof(Light))]
6class LightPlacementTool : EditorTool
7{
8 private const float k_DefaultZoom = 0.05f;
9 private bool initialPositionSet;
10
11 private static Vector3 initialPivot;
12 private static Quaternion initialRotation;
13
14 private static Vector3 originalPivot;
15 private static Quaternion originalRotation;
16
17 private static GameObject currentGameObject;
18 private float previousZoom;
19 private static SceneView.SceneViewState previousSceneViewState;
20 private static SceneView lastSceneView;
21
22 public override GUIContent toolbarIcon => EditorGUIUtility.TrIconContent(UnityEditor.Rendering.CoreEditorUtils.LoadIcon(@"Packages/com.unity.render-pipelines.core/Editor/Lighting/Icons/", "LightPlacement_Icon", ".png", false), "The Light Placement Tool temporarily changes the Scene Camera to look-through the currently selected Light. Use the Scene View Navigation controls to move it around the Scene.");
23
24 public override void OnActivated()
25 {
26 base.OnActivated();
27 if (lastSceneView == null)
28 {
29 lastSceneView = SceneView.lastActiveSceneView;
30 lastSceneView.orthographic = false;
31 previousSceneViewState = lastSceneView.sceneViewState;
32 lastSceneView.sceneViewState.alwaysRefresh = true;
33 }
34 TransitionCameraToLight();
35 Undo.undoRedoPerformed += OnUndoRedo;
36 }
37
38 public override void OnWillBeDeactivated()
39 {
40 base.OnWillBeDeactivated();
41 if (lastSceneView != null)
42 {
43 lastSceneView.sceneViewState = previousSceneViewState;
44 }
45 Undo.undoRedoPerformed -= OnUndoRedo;
46 ResetCamera();
47 }
48
49 public override void OnToolGUI(EditorWindow window)
50 {
51 base.OnToolGUI(window);
52 SceneView view = SceneView.lastActiveSceneView;
53
54 //View size getting smaller than 0.0001f causes the camera to get stuck
55 if (view.size <= 0)
56 view.FixNegativeSize();
57
58 if (lastSceneView != view)
59 return;
60
61 if (currentGameObject == null)
62 return;
63
64 if (!initialPositionSet)
65 {
66 SetInitialPosition(view);
67 return;
68 }
69
70 Event e = Event.current;
71
72 if (e.type == EventType.KeyDown && e.keyCode == KeyCode.Escape)
73 {
74 ToolManager.RestorePreviousTool();
75 e.Use();
76 view.Repaint();
77 return;
78 }
79
80 Undo.RecordObject(currentGameObject.transform, "Move Light");
81 Vector3 lookDir = (view.pivot - view.camera.transform.position).normalized;
82 currentGameObject.transform.SetPositionAndRotation(view.camera.transform.position + lookDir * k_DefaultZoom * 2f, view.camera.transform.rotation);
83 }
84
85 private void OnUndoRedo()
86 {
87 if (currentGameObject != null && lastSceneView != null)
88 {
89 lastSceneView.pivot = currentGameObject.transform.position;
90 lastSceneView.rotation = currentGameObject.transform.rotation;
91 }
92 }
93
94 private void TransitionCameraToLight()
95 {
96 initialPivot = SceneView.lastActiveSceneView.pivot;
97 initialRotation = SceneView.lastActiveSceneView.camera.transform.rotation;
98
99 var targetComponent = target as Light;
100 if (targetComponent != null)
101 {
102 currentGameObject = targetComponent.gameObject;
103 originalPivot = currentGameObject.transform.position;
104 originalRotation = currentGameObject.transform.rotation;
105 initialPositionSet = false;
106 }
107 }
108
109 private void SetInitialPosition(SceneView view)
110 {
111 previousZoom = view.size;
112 view.pivot = originalPivot;
113 view.rotation = originalRotation;
114 view.size = k_DefaultZoom;
115 view.Repaint();
116 initialPositionSet = true;
117 }
118
119 private void ResetCamera()
120 {
121 SceneView.lastActiveSceneView.pivot = initialPivot;
122 SceneView.lastActiveSceneView.rotation = initialRotation;
123 SceneView.lastActiveSceneView.size = previousZoom;
124 }
125}