in-world ui textboxes

ui/component/VNTextbox.gd

@@ -1,6 +1,10 @@
-class_name VNTextbox extends PanelContainer
+class_name ChatBox extends PanelContainer
 
 const VN_REVEAL_TIME = 0.01
+const _DEFAULT_ANCHOR_TOP = 1.0
+const _DEFAULT_ANCHOR_RIGHT = 1.0
+const _DEFAULT_ANCHOR_BOTTOM = 1.0
+const _DEFAULT_OFFSET_TOP = -58.0
 
 var label:AdvancedRichText;
 var parsedOutText = ""
@@ -12,6 +16,7 @@ var currentViewScrolled = true;
 var isSpeedupDown = false;
 
 var hasLetGoOfInteract:bool = true;
+var worldTarget:Node3D = null
 
 var isClosed:bool = false:
   get():
@@ -19,20 +24,63 @@ var isClosed:bool = false:
   set(value):
     self.visible = !value;
 
-signal textboxClosing
+signal chatboxClosing
 
 func _ready() -> void:
   label = $MarginContainer/Label
   isClosed = true
 
+func _setWorldLayout(hasTarget:bool) -> void:
+  if hasTarget:
+    anchor_left = 0.0
+    anchor_top = 0.0
+    anchor_right = 0.0
+    anchor_bottom = 0.0
+    offset_left = 0.0
+    offset_top = 0.0
+    offset_right = 0.0
+    offset_bottom = 0.0
+    custom_minimum_size = Vector2(90, 0)
+  else:
+    if label != null:
+      label.fit_content = false
+    anchor_left = 0.0
+    anchor_top = _DEFAULT_ANCHOR_TOP
+    anchor_right = _DEFAULT_ANCHOR_RIGHT
+    anchor_bottom = _DEFAULT_ANCHOR_BOTTOM
+    offset_left = 0.0
+    offset_top = _DEFAULT_OFFSET_TOP
+    offset_right = 0.0
+    offset_bottom = 0.0
+    custom_minimum_size = Vector2.ZERO
+
+func _updateWorldPosition() -> void:
+  if worldTarget == null:
+    return
+  var camera:Camera3D = get_viewport().get_camera_3d()
+  if camera == null:
+    return
+  var screenPos:Vector2 = camera.unproject_position(worldTarget.global_position + Vector3(0, 2.5, 0))
+  var viewportSize:Vector2 = get_viewport().get_visible_rect().size
+  position = screenPos - size * 0.5
+  position.x = clamp(position.x, 0.0, viewportSize.x - size.x)
+  position.y = clamp(position.y, 0.0, viewportSize.y - size.y)
+
 func _process(delta: float) -> void:
   if isClosed:
     return;
 
+  _updateWorldPosition()
+
+  # _recalcText always resets fit_content to false; re-apply so the
+  # PanelContainer can grow to its content height in world-space mode.
+  if worldTarget != null and !label.fit_content:
+    label.fit_content = true
+
   if label.getFinalText() == "":
     isClosed = true;
     return;
-  
+
   if Input.is_action_just_released("interact") && !hasLetGoOfInteract:
     hasLetGoOfInteract = true;
     return
@@ -51,7 +99,7 @@ func _process(delta: float) -> void:
     else:
       # On last page
       if Input.is_action_just_released("interact") && hasLetGoOfInteract:
-        textboxClosing.emit();
+        chatboxClosing.emit();
         isClosed = true;
       currentViewScrolled = true
     return;
@@ -73,15 +121,15 @@ func _process(delta: float) -> void:
     revealTimer = 0;
     label.visible_characters += 1;
 
-func setText(text:String) -> void:
-  # Prepare textbox for scrolling
+func setText(text:String, target:Node3D = null) -> void:
+  worldTarget = target
+  _setWorldLayout(worldTarget != null)
 
   # Resets scroll
   revealTimer = 0;
   currentViewScrolled = false;
   label.startLine = 0;
 
-  # I had a frame wait here before.
   label.text = text;
   label.visible_characters = 0;
 
@@ -90,7 +138,7 @@ func setText(text:String) -> void:
   isSpeedupDown = false
   isClosed = false;
 
-func setTextAndWait(text:String) -> void:
-  self.setText(text);
-  await self.textboxClosing
+func setTextAndWait(text:String, target:Node3D = null) -> void:
+  self.setText(text, target);
+  await self.chatboxClosing
   await get_tree().process_frame