Added Dart Physics

2026-06-20 16:19:33 -05:00
parent feab4d7e4f
commit a77cea1b3d
15 changed files with 296 additions and 1 deletions
@@ -1,3 +1,23 @@
 [gd_scene format=3 uid="uid://bswbcehkkqbk0"]

-[node name="Dart" type="Node3D"]
+[ext_resource type="Script" uid="uid://8kk531f88oqw" path="res://Scenes/DartPhysics.gd" id="1_s1kro"]
+
+[sub_resource type="CapsuleShape3D" id="CapsuleShape3D_xxti7"]
+
+[sub_resource type="CapsuleMesh" id="CapsuleMesh_xxti7"]
+
+[node name="Dart" type="Node3D" unique_id=367982453]
+
+[node name="RigidBody3D" type="RigidBody3D" parent="." unique_id=1993396351]
+mass = 100.0
+center_of_mass_mode = 1
+center_of_mass = Vector3(0, -0.1, 0)
+script = ExtResource("1_s1kro")
+angle_of_plane = -25.0
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="RigidBody3D" unique_id=1030334431]
+shape = SubResource("CapsuleShape3D_xxti7")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="RigidBody3D/CollisionShape3D" unique_id=136997515]
+mesh = SubResource("CapsuleMesh_xxti7")
+skeleton = NodePath("")
@@ -0,0 +1,93 @@
+extends RigidBody3D
+
+class_name Dart
+
+
+
+var dragging: bool = false
+var drag_plane: Plane
+var drag_offset: Vector3 = Vector3.ZERO
+var target_pos: Vector3 = Vector3.ZERO
+
+# velocity tracking for release throw
+var position_history: Array[Vector3] = []
+var time_history: Array[float] = []
+const HISTORY_LENGTH = 5
+
+# drag "stiffness" tuning
+@export var drag_follow_speed: float = 20.0   # how fast it chases the mouse
+@export var max_drag_speed: float = 15.0      # clamp so it doesn't go insane
+@export_range(-180,180) var angle_of_plane: float = 15.0
+
+func start_drag(camera: Camera3D, mouse_pos: Vector2, hit_point: Vector3):
+	dragging = true
+
+	# keep it physics-active — don't freeze
+	gravity_scale = 0.0          # optional: ignore gravity while held so it doesn't sag
+	linear_damp = 4.0            # optional: a bit of damping for stability while dragged
+
+	#drag_plane = Plane(camera.global_transform.basis.z, hit_point)
+	var base_normal = camera.global_transform.basis.z
+	var tilt = base_normal.rotated(camera.global_transform.basis.x, deg_to_rad(angle_of_plane))  # tilt adjustable around camera's right axis
+	drag_plane = Plane(tilt.normalized(), hit_point)
+	drag_offset = global_position - hit_point
+
+	position_history.clear()
+	time_history.clear()
+
+func update_drag(camera: Camera3D, mouse_pos: Vector2):
+	if not dragging:
+		return
+
+	var ray_origin = camera.project_ray_origin(mouse_pos)
+	var ray_dir = camera.project_ray_normal(mouse_pos)
+
+	var intersection = drag_plane.intersects_ray(ray_origin, ray_dir)
+	if intersection:
+		target_pos = intersection + drag_offset
+
+func _physics_process(delta):
+	if dragging:
+		# chase the target position with velocity instead of teleporting
+		var to_target = target_pos - global_position
+		var desired_velocity = to_target * drag_follow_speed
+
+		if desired_velocity.length() > max_drag_speed:
+			desired_velocity = desired_velocity.normalized() * max_drag_speed
+
+		linear_velocity = desired_velocity
+		angular_velocity = angular_velocity.lerp(Vector3.ZERO, 0.2)  # optional: damp spin while dragging
+
+		# track actual position for momentum calc on release
+		position_history.append(global_position)
+		time_history.append(Time.get_ticks_msec() / 1000.0)
+		if position_history.size() > HISTORY_LENGTH:
+			position_history.pop_front()
+			time_history.pop_front()
+
+func release_drag():
+	if not dragging:
+		return
+	dragging = false
+
+	gravity_scale = 1.0
+	linear_damp = 0.0  # reset to whatever your normal dart damping is
+
+	var velocity = calculate_throw_velocity()
+	linear_velocity = velocity
+	# angular_velocity left as-is from physics, or compute your own spin here
+
+func calculate_throw_velocity() -> Vector3:
+	if position_history.size() < 2:
+		return linear_velocity  # fallback to whatever physics already had
+
+	var start_pos = position_history[0]
+	var end_pos = position_history[position_history.size() - 1]
+	var start_time = time_history[0]
+	var end_time = time_history[time_history.size() - 1]
+
+	var dt = end_time - start_time
+	if dt <= 0.0:
+		return linear_velocity
+
+	return (end_pos - start_pos) / dt
@@ -0,0 +1 @@
+uid://8kk531f88oqw
@@ -0,0 +1,27 @@
+extends Camera3D
+
+var held_dart: Dart = null
+
+func _unhandled_input(event):
+	if event is InputEventMouseButton and event.button_index == MOUSE_BUTTON_LEFT:
+		if event.pressed:
+			try_grab_dart(event.position)
+		else:
+			if held_dart:
+				held_dart.release_drag()
+				held_dart = null
+	elif event is InputEventMouseMotion and held_dart:
+		held_dart.update_drag(self, event.position)
+
+func try_grab_dart(mouse_pos: Vector2):
+	var ray_origin = project_ray_origin(mouse_pos)
+	var ray_dir = project_ray_normal(mouse_pos)
+	var ray_end = ray_origin + ray_dir * 1000.0
+
+	var space_state = get_world_3d().direct_space_state
+	var query = PhysicsRayQueryParameters3D.create(ray_origin, ray_end)
+	var result = space_state.intersect_ray(query)
+
+	if result and result.collider is Dart:
+		held_dart = result.collider
+		held_dart.start_drag(self, mouse_pos, result.position)
@@ -0,0 +1 @@
+uid://ds3uiri3oc05v
@@ -0,0 +1,5 @@
+extends Node3D
+
+func _unhandled_input(event):
+	if event.is_action_pressed("restart"):
+		get_tree().reload_current_scene()
@@ -0,0 +1 @@
+uid://geqmah8kbko0
@@ -0,0 +1,39 @@
+[gd_scene format=3 uid="uid://doh7p84eej78c"]
+
+[ext_resource type="Script" uid="uid://geqmah8kbko0" path="res://Scenes/main.gd" id="1_8gbba"]
+[ext_resource type="Script" uid="uid://ds3uiri3oc05v" path="res://Scenes/camera_3d.gd" id="1_bo1nx"]
+[ext_resource type="PackedScene" uid="uid://bswbcehkkqbk0" path="res://Scenes/Dart.tscn" id="1_jjgbg"]
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_qu08v"]
+size = Vector3(1, 0.01, 1)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_6q475"]
+albedo_color = Color(0, 0.42745098, 0.05490196, 1)
+
+[sub_resource type="BoxMesh" id="BoxMesh_xxti7"]
+material = SubResource("StandardMaterial3D_6q475")
+size = Vector3(1, 0.01, 1)
+
+[node name="Main" type="Node3D" unique_id=819165214]
+script = ExtResource("1_8gbba")
+
+[node name="Camera3D" type="Camera3D" parent="." unique_id=1570426839]
+transform = Transform3D(-1, 2.4096988e-08, -8.4036174e-08, 0, 0.9612618, 0.2756374, 8.742278e-08, 0.2756374, -0.9612618, 0, 5.0674033, -6.36445)
+fov = 90.0
+script = ExtResource("1_bo1nx")
+
+[node name="Dart" parent="." unique_id=367982453 instance=ExtResource("1_jjgbg")]
+transform = Transform3D(1, 0, 0, 0, 0.0067959065, 0.99997693, 0, -0.99997693, 0.0067959065, 0, 2.692557, 0)
+
+[node name="DirectionalLight3D" type="DirectionalLight3D" parent="." unique_id=1891469178]
+transform = Transform3D(-0.789482, 0.24223976, -0.56394875, -0.56595325, 0.06825608, 0.821607, 0.23751883, 0.9678125, 0.083209395, -46.816067, 15.942318, -50.370865)
+
+[node name="StaticBody3D" type="StaticBody3D" parent="." unique_id=889230389]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="StaticBody3D" unique_id=229129629]
+transform = Transform3D(100, 0, 0, 0, 100, 0, 0, 0, 100, 0, 0, 0)
+shape = SubResource("BoxShape3D_qu08v")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="StaticBody3D/CollisionShape3D" unique_id=849495197]
+mesh = SubResource("BoxMesh_xxti7")
+skeleton = NodePath("")
@@ -0,0 +1,15 @@
+extends Camera3D
+
+const RAY_LENGTH = 1000
+
+func ray_cast():
+	var space_state = get_world_3d().direct_space_state
+	var cam = $"."
+	var mousepos = get_viewport().get_mouse_position()
+	var origin = cam.project_ray_origin(mousepos) 
+	var end = origin + cam.project_ray_normal(mousepos) * RAY_LENGTH
+	var query = PhysicsRayQueryParameters3D.create(origin,end)
+	query.collide_with_areas = true
+	var result = space_state.intersect_ray(query)
+	result = result.get("collider")
+	return result
@@ -0,0 +1 @@
+uid://ckbdoamrm313u
@@ -0,0 +1,50 @@
+extends Node3D
+
+var draggingCollider
+var mousePosition
+var doDrag = false
+
+func _input(event):
+	var intersect
+	
+	if event is InputEventMouse:
+		intersect = get_mouse_intersect(event.position)
+		if intersect: mousePosition = intersect.position 
+		#snap on collider
+		#if intersect: mousePosition = intersect.collider.global_position
+		
+	if event is InputEventMouseButton:
+		var leftButtonPressed = event.button_index == MOUSE_BUTTON_LEFT && event.pressed
+		var leftButtonReleased = event.button_index == MOUSE_BUTTON_LEFT && !event.pressed
+		
+		if leftButtonReleased:
+			doDrag = false
+			drag_and_drop(intersect)
+		elif leftButtonPressed:
+			doDrag = true
+			drag_and_drop(intersect)
+
+
+func _process(delta):
+	if draggingCollider:
+		draggingCollider.global_position = mousePosition
+
+func drag_and_drop(intersect):
+	var canMove = intersect.collider in get_tree().get_nodes_in_group("Dart")
+	if !draggingCollider && doDrag && canMove:
+		draggingCollider = intersect.collider
+	elif draggingCollider:
+		draggingCollider = null
+	
+func get_mouse_intersect(mousePosition):
+	var currentCamera = get_viewport().get_camera_3d()
+	var params = PhysicsRayQueryParameters3D.new()
+	
+	params.from = currentCamera.project_ray_origin(mousePosition)
+	params.to = currentCamera.project_position(mousePosition, 1000)
+	if draggingCollider: params.exclude = [draggingCollider]
+	
+	var worldspace = get_world_3d().direct_space_state
+	var result = worldspace.intersect_ray(params)
+	
+	return result
@@ -0,0 +1 @@
+uid://sueo33rxr07e
@@ -0,0 +1,16 @@
+extends MeshInstance3D
+
+@onready var camera = get_node("Camera3D")
+@onready var area = get_node("../../../Dart")
+
+func _input(event):
+	if Input.is_action_just_pressed("leftClick"):
+		print(camera.ray_cast().position)
+	
+	if camera.ray_cast() != null and Input.is_action_pressed("midleclic"):
+		var mousepos = get_viewport().get_mouse_position()
+		var origin = camera.projectray_origin(mousepos)
+		var end = camera.project_ray_normal(mousepos)
+		var depth = origin.distence_to(area.global_position)
+		var final_position = origin + end * depth
+		area.global_position=final_position
@@ -0,0 +1 @@
+uid://cc5yy1yc3j2uu
@@ -15,9 +15,33 @@ compatibility/default_parent_skeleton_in_mesh_instance_3d=true
 [application]

 config/name="Dart Game"
+run/main_scene="uid://doh7p84eej78c"
 config/features=PackedStringArray("4.7", "Mobile")
 config/icon="res://icon.svg"

+[display]
+
+window/stretch/mode="viewport"
+window/stretch/aspect="expand"
+
+[global_group]
+
+Dart="All throwable darts"
+
+[input]
+
+leftClick={
+"deadzone": 0.2,
+"events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":1,"canceled":false,"pressed":false,"double_click":false,"script":null)
+]
+}
+restart={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":16,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":82,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":16,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":32,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+
 [rendering]

 renderer/rendering_method="mobile"