171 lines
6.5 KiB
GDScript
171 lines
6.5 KiB
GDScript
extends Spatial
|
|
|
|
# The size of the quad mesh itself.
|
|
var quad_mesh_size
|
|
# Used for checking if the mouse is inside the Area
|
|
var is_mouse_inside = false
|
|
# Used for checking if the mouse was pressed inside the Area
|
|
var is_mouse_held = false
|
|
# The last non-empty mouse position. Used when dragging outside of the box.
|
|
var last_mouse_pos3D = null
|
|
# The last processed input touch/mouse event. To calculate relative movement.
|
|
var last_mouse_pos2D = null
|
|
|
|
onready var node_viewport = $Viewport
|
|
onready var node_quad = $Quad
|
|
onready var node_area = $Quad/Area
|
|
|
|
func _ready():
|
|
node_area.connect("mouse_entered", self, "_mouse_entered_area")
|
|
|
|
# If the material is NOT set to use billboard settings, then avoid running billboard specific code
|
|
if node_quad.get_surface_material(0).params_billboard_mode == 0:
|
|
set_process(false)
|
|
|
|
|
|
func _process(_delta):
|
|
# NOTE: Remove this function if you don't plan on using billboard settings.
|
|
rotate_area_to_billboard()
|
|
|
|
|
|
func _mouse_entered_area():
|
|
is_mouse_inside = true
|
|
|
|
|
|
func _unhandled_input(event):
|
|
# Check if the event is a non-mouse/non-touch event
|
|
var is_mouse_event = false
|
|
for mouse_event in [InputEventMouseButton, InputEventMouseMotion, InputEventScreenDrag, InputEventScreenTouch]:
|
|
if event is mouse_event:
|
|
is_mouse_event = true
|
|
break
|
|
|
|
# If the event is a mouse/touch event and/or the mouse is either held or inside the area, then
|
|
# we need to do some additional processing in the handle_mouse function before passing the event to the viewport.
|
|
# If the event is not a mouse/touch event, then we can just pass the event directly to the viewport.
|
|
if is_mouse_event and (is_mouse_inside or is_mouse_held):
|
|
handle_mouse(event)
|
|
elif not is_mouse_event:
|
|
node_viewport.input(event)
|
|
|
|
|
|
# Handle mouse events inside Area. (Area.input_event had many issues with dragging)
|
|
func handle_mouse(event):
|
|
# Get mesh size to detect edges and make conversions. This code only support PlaneMesh and QuadMesh.
|
|
quad_mesh_size = node_quad.mesh.size
|
|
|
|
# Detect mouse being held to mantain event while outside of bounds. Avoid orphan clicks
|
|
if event is InputEventMouseButton or event is InputEventScreenTouch:
|
|
is_mouse_held = event.pressed
|
|
|
|
# Find mouse position in Area
|
|
var mouse_pos3D = find_mouse(event.global_position)
|
|
|
|
# Check if the mouse is outside of bounds, use last position to avoid errors
|
|
# NOTE: mouse_exited signal was unrealiable in this situation
|
|
is_mouse_inside = mouse_pos3D != null
|
|
if is_mouse_inside:
|
|
# Convert click_pos from world coordinate space to a coordinate space relative to the Area node.
|
|
# NOTE: affine_inverse accounts for the Area node's scale, rotation, and translation in the scene!
|
|
mouse_pos3D = node_area.global_transform.affine_inverse() * mouse_pos3D
|
|
last_mouse_pos3D = mouse_pos3D
|
|
else:
|
|
mouse_pos3D = last_mouse_pos3D
|
|
if mouse_pos3D == null:
|
|
mouse_pos3D = Vector3.ZERO
|
|
|
|
# TODO: adapt to bilboard mode or avoid completely
|
|
|
|
# convert the relative event position from 3D to 2D
|
|
var mouse_pos2D = Vector2(mouse_pos3D.x, -mouse_pos3D.y)
|
|
|
|
# Right now the event position's range is the following: (-quad_size/2) -> (quad_size/2)
|
|
# We need to convert it into the following range: 0 -> quad_size
|
|
mouse_pos2D.x += quad_mesh_size.x / 2
|
|
mouse_pos2D.y += quad_mesh_size.y / 2
|
|
# Then we need to convert it into the following range: 0 -> 1
|
|
mouse_pos2D.x = mouse_pos2D.x / quad_mesh_size.x
|
|
mouse_pos2D.y = mouse_pos2D.y / quad_mesh_size.y
|
|
|
|
# Finally, we convert the position to the following range: 0 -> viewport.size
|
|
mouse_pos2D.x = mouse_pos2D.x * node_viewport.size.x
|
|
mouse_pos2D.y = mouse_pos2D.y * node_viewport.size.y
|
|
# We need to do these conversions so the event's position is in the viewport's coordinate system.
|
|
|
|
# Set the event's position and global position.
|
|
event.position = mouse_pos2D
|
|
event.global_position = mouse_pos2D
|
|
|
|
# If the event is a mouse motion event...
|
|
if event is InputEventMouseMotion:
|
|
# If there is not a stored previous position, then we'll assume there is no relative motion.
|
|
if last_mouse_pos2D == null:
|
|
event.relative = Vector2(0, 0)
|
|
# If there is a stored previous position, then we'll calculate the relative position by subtracting
|
|
# the previous position from the new position. This will give us the distance the event traveled from prev_pos
|
|
else:
|
|
event.relative = mouse_pos2D - last_mouse_pos2D
|
|
# Update last_mouse_pos2D with the position we just calculated.
|
|
last_mouse_pos2D = mouse_pos2D
|
|
|
|
# Finally, send the processed input event to the viewport.
|
|
node_viewport.input(event)
|
|
|
|
|
|
func find_mouse(global_position):
|
|
var camera = get_viewport().get_camera()
|
|
|
|
# From camera center to the mouse position in the Area
|
|
var from = camera.project_ray_origin(global_position)
|
|
var dist = find_further_distance_to(camera.transform.origin)
|
|
var to = from + camera.project_ray_normal(global_position) * dist
|
|
|
|
|
|
# Manually raycasts the are to find the mouse position
|
|
var result = get_world().direct_space_state.intersect_ray(from, to, [], node_area.collision_layer,false,true) #for 3.1 changes
|
|
|
|
if result.size() > 0:
|
|
return result.position
|
|
else:
|
|
return null
|
|
|
|
|
|
func find_further_distance_to(origin):
|
|
# Find edges of collision and change to global positions
|
|
var edges = []
|
|
edges.append(node_area.to_global(Vector3(quad_mesh_size.x / 2, quad_mesh_size.y / 2, 0)))
|
|
edges.append(node_area.to_global(Vector3(quad_mesh_size.x / 2, -quad_mesh_size.y / 2, 0)))
|
|
edges.append(node_area.to_global(Vector3(-quad_mesh_size.x / 2, quad_mesh_size.y / 2, 0)))
|
|
edges.append(node_area.to_global(Vector3(-quad_mesh_size.x / 2, -quad_mesh_size.y / 2, 0)))
|
|
|
|
# Get the furthest distance between the camera and collision to avoid raycasting too far or too short
|
|
var far_dist = 0
|
|
var temp_dist
|
|
for edge in edges:
|
|
temp_dist = origin.distance_to(edge)
|
|
if temp_dist > far_dist:
|
|
far_dist = temp_dist
|
|
|
|
return far_dist
|
|
|
|
|
|
func rotate_area_to_billboard():
|
|
var billboard_mode = node_quad.get_surface_material(0).params_billboard_mode
|
|
|
|
# Try to match the area with the material's billboard setting, if enabled
|
|
if billboard_mode > 0:
|
|
# Get the camera
|
|
var camera = get_viewport().get_camera()
|
|
# Look in the same direction as the camera
|
|
var look = camera.to_global(Vector3(0, 0, -100)) - camera.global_transform.origin
|
|
look = node_area.translation + look
|
|
|
|
# Y-Billboard: Lock Y rotation, but gives bad results if the camera is tilted.
|
|
if billboard_mode == 2:
|
|
look = Vector3(look.x, 0, look.z)
|
|
|
|
node_area.look_at(look, Vector3.UP)
|
|
|
|
# Rotate in the Z axis to compensate camera tilt
|
|
node_area.rotate_object_local(Vector3.BACK, camera.rotation.z)
|