first save

entities/RoadPath.tscn

@@ -1,14 +0,0 @@
-[gd_scene load_steps=3 format=3 uid="uid://cjk3phtyyiyty"]
-
-[ext_resource type="Script" uid="uid://bdw7xdf1lc3ud" path="res://entities/do_spline.gd" id="1_c4y0q"]
-
-[sub_resource type="Curve3D" id="Curve3D_p7e7j"]
-_data = {
-"points": PackedVector3Array(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6.24595, 0, 10),
-"tilts": PackedFloat32Array(0, 0)
-}
-point_count = 2
-
-[node name="Track" type="Path3D"]
-curve = SubResource("Curve3D_p7e7j")
-script = ExtResource("1_c4y0q")

entities/car/car.gd

@@ -0,0 +1,121 @@
+extends RigidBody3D
+class_name Car
+
+@export var forward_force: float = 100.0
+@export var backward_force: float = 50.0
+@export var steer_speed: float = 2.0
+
+@export var base_lateral_friction: float = 5.0
+@export var lateral_velocity_start_drift_threshold: float = 10.0
+@export var lateral_velocity_total_drift_threshold: float = 15.0
+
+@onready var forward_left: RayCast3D = $Raycasts/ForwardLeft
+@onready var forward_right: RayCast3D = $Raycasts/ForwardRight
+@onready var backward_right: RayCast3D = $Raycasts/BackwardRight
+@onready var backward_left: RayCast3D = $Raycasts/BackwardLeft
+
+@onready var forward_left_respawn: RayCast3D = $RaycastsRespawn/ForwardLeftRespawn
+@onready var forward_right_respawn: RayCast3D = $RaycastsRespawn/ForwardRightRespawn
+@onready var backward_right_respawn: RayCast3D = $RaycastsRespawn/BackwardRightRespawn
+@onready var backward_left_respawn: RayCast3D = $RaycastsRespawn/BackwardLeftRespawn
+
+
+
+var base_steer_speed: float
+var current_steer_speed = base_steer_speed
+var last_steer_input := 0.0
+var rotation_angle := 0.0
+
+var respawn_pos : Vector3 
+
+var thread: Thread = Thread.new()
+var steer_input = 0.0
+
+var cheat := false
+var air_time := 0.0
+
+
+func return_to_road():
+	position = respawn_pos + 3*Vector3.UP
+	rotation.z = 0
+	rotation.x = 0
+	
+	linear_velocity = Vector3.ZERO
+	angular_velocity = Vector3.ZERO
+	
+	air_time = 0.0
+	
+func _process(_delta: float) -> void:
+	
+	if Input.is_action_just_pressed("restart"):
+		return_to_road()
+
+func _physics_process(delta: float) -> void:
+	var move_input := Input.get_axis("back", "forward")
+	var steer_input_brut := Input.get_axis("right", "left")
+	steer_input = lerpf(steer_input, steer_input_brut, 0.1)
+	var is_on_floor := backward_left_respawn.is_colliding() || backward_right_respawn.is_colliding() || forward_left_respawn.is_colliding() || forward_right_respawn.is_colliding()
+	var is_all_wheel_on_floor := backward_left_respawn.is_colliding() && backward_right_respawn.is_colliding() && forward_left_respawn.is_colliding() && forward_right_respawn.is_colliding()
+	var is_flat : bool = transform.basis.y.dot(Vector3.UP) > 0.9
+	
+	if is_all_wheel_on_floor && is_flat:
+		respawn_pos = position
+
+	if !is_on_floor && !cheat:
+		#$DriftParticles.emitting = false
+		#$DriftParticles2.emitting = false
+		#AudioServer.set_bus_volume_db(5, -80)
+		air_time += delta
+		if air_time > 1.5:
+			return_to_road()
+		return
+	air_time = 0.0
+	if cheat && Input.is_key_pressed(KEY_SPACE):
+		linear_velocity.y += 20*delta
+	if cheat:
+		forward_force = 500
+		
+	# Movement
+	if move_input > 0.0:
+		apply_central_force(global_transform.basis.z * forward_force)
+	elif move_input < 0.0:
+		var break_or_backward = 2*backward_force if global_transform.basis.z.dot(linear_velocity) > 0 else backward_force
+		apply_central_force(global_transform.basis.z * -break_or_backward)
+
+	# Rotation
+	rotation_angle = steer_input * delta
+	#angular_velocity = steer_input * delta * global_transform.basis.y * 30.0
+	rotate(global_transform.basis.y, rotation_angle)
+	
+	# Drift Simulation
+	var velocity = linear_velocity
+	var forward_dir = global_transform.basis.z
+	if forward_dir.length_squared() == 0.0:
+		return # skip drift this frame if something is invalid
+	forward_dir = forward_dir.normalized()
+
+	var forward_velocity = forward_dir * velocity.dot(forward_dir)
+	var lateral_velocity = velocity - forward_velocity
+	
+	var drift_factor = inverse_lerp(
+	lateral_velocity_total_drift_threshold,
+	lateral_velocity_start_drift_threshold,
+	lateral_velocity.length()
+	)
+	drift_factor = clamp(drift_factor, 0, 1)
+	
+	#$DriftParticles.emitting = drift_factor < 1 && is_on_floor
+	#$DriftParticles2.emitting = drift_factor < 1 && is_on_floor
+	#if drift_factor < 1 && is_on_floor:
+		#AudioServer.set_bus_volume_db(5, lerp(-15, -30, drift_factor))
+	#else:
+		#AudioServer.set_bus_volume_db(5, -80)
+	
+	steer_speed = lerp(steer_speed * 2.0, base_steer_speed, drift_factor)
+
+	var lateral_friction_force = -lateral_velocity * base_lateral_friction * drift_factor
+	apply_central_force(lateral_friction_force)
+	
+	
+
+		

entities/car/car.gd.uid

@@ -0,0 +1 @@
+uid://ctjy0e806j0vk

entities/car/car.tscn

@@ -0,0 +1,47 @@
+[gd_scene load_steps=4 format=3 uid="uid://dgs0fqojgcmu3"]
+
+[ext_resource type="Script" uid="uid://ctjy0e806j0vk" path="res://entities/car/car.gd" id="1_nh45c"]
+
+[sub_resource type="BoxMesh" id="BoxMesh_kkl2f"]
+size = Vector3(1, 1, 2)
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_76tdi"]
+size = Vector3(1, 1, 2)
+
+[node name="Car" type="RigidBody3D"]
+script = ExtResource("1_nh45c")
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="."]
+mesh = SubResource("BoxMesh_kkl2f")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, -0.00250244)
+shape = SubResource("BoxShape3D_76tdi")
+
+[node name="Raycasts" type="Node3D" parent="."]
+
+[node name="ForwardLeft" type="RayCast3D" parent="Raycasts"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.5, 0, -1)
+
+[node name="ForwardRight" type="RayCast3D" parent="Raycasts"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.5, 0, -1)
+
+[node name="BackwardRight" type="RayCast3D" parent="Raycasts"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.5, 0, 1)
+
+[node name="BackwardLeft" type="RayCast3D" parent="Raycasts"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.5, 0, 1)
+
+[node name="RaycastsRespawn" type="Node3D" parent="."]
+
+[node name="ForwardLeftRespawn" type="RayCast3D" parent="RaycastsRespawn"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.5, 0, -1)
+
+[node name="ForwardRightRespawn" type="RayCast3D" parent="RaycastsRespawn"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.5, 0, -1)
+
+[node name="BackwardRightRespawn" type="RayCast3D" parent="RaycastsRespawn"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.5, 0, 1)
+
+[node name="BackwardLeftRespawn" type="RayCast3D" parent="RaycastsRespawn"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.5, 0, 1)

entities/car/car_physic_mat.tres

@@ -0,0 +1,4 @@
+[gd_resource type="PhysicsMaterial" format=3 uid="uid://doaljsb6138cp"]
+
+[resource]
+friction = 0.1

entities/do_spline.gd

@@ -1,26 +0,0 @@
-@tool
-extends Path3D
-class_name RoadPath
-@export_tool_button("update_control_points") var action = update_control_points
-
-func update_control_points():
-	if curve.point_count < 2:
-		return
-	
-	
-	# Start point: out control based on next point
-	var dir = (curve.get_point_position(1) - curve.get_point_position(0)).normalized()
-	var tangent_length = dir.length() / 3 
-	
-	curve.set_point_out(0, dir * tangent_length)
-	
-	# Intermediate points: in and out controls based on adjacent points
-	for i in range(1, curve.point_count - 1):
-		var prev_dir = (curve.get_point_position(i) - curve.get_point_position(i - 1)).normalized()
-		var next_dir = (curve.get_point_position(i + 1) - curve.get_point_position(i)).normalized()
-		tangent_length = next_dir.length() / 3 
-		var tangent = (prev_dir + next_dir)
-		tangent.y = 0
-		tangent = tangent.normalized()
-		curve.set_point_in(i, -tangent * tangent_length)
-		curve.set_point_out(i, tangent * tangent_length)

entities/road/do_spline.gd

@@ -0,0 +1,32 @@
+@tool
+extends Path3D
+class_name RoadPath
+@export_tool_button("update_control_points") var action = update_control_points
+
+func modulo_get_point_position(i):
+	return curve.get_point_position(posmod(i, curve.point_count))
+
+func update_control_points():
+	if curve.point_count < 2:
+		return
+	
+	#
+	## Start point: out control based on next point
+	#var dir = (curve.get_point_position(1) - curve.get_point_position(0)).normalized()
+	#var tangent_length = dir.length() / 3 
+	#
+	#curve.set_point_out(0, dir * tangent_length)
+	
+	# Intermediate points: in and out controls based on adjacent points
+	for i in range(0, curve.point_count):
+		var prev = modulo_get_point_position(i) - modulo_get_point_position(i - 1)
+		var next = modulo_get_point_position(i + 1) - modulo_get_point_position(i)
+		var prev_dir = prev.normalized()
+		var next_dir = next.normalized()
+		var tangent_length = next.length() / 3 
+		var tangent = (prev_dir + next_dir)
+		
+		tangent.y = 0
+		tangent = tangent.normalized()
+		curve.set_point_in(i, -tangent * tangent_length)
+		curve.set_point_out(i, tangent * tangent_length)

entities/road/road.gd

@@ -0,0 +1,118 @@
+@tool
+extends StaticBody3D
+class_name Road
+
+@export_tool_button("create_mesh") var action_generate = generate_mesh
+@export_tool_button("clear_all") var action_clear = clear_all
+
+@export var track : RoadPath
+@export var road_mesh_instance : MeshInstance3D
+@export var road_shape : CollisionShape3D
+@export var road_material : BaseMaterial3D
+@export var segment_length := 0.1
+@export var road_width : float = 1.5
+@export var road_thickness : float = 0.5
+
+var st_road = SurfaceTool.new()
+
+func clear_all():
+	st_road = SurfaceTool.new()
+	st_road.clear()
+	road_mesh_instance.mesh = null
+	if road_shape and road_shape.shape:
+		road_shape.shape = null
+
+func generate_mesh():
+	clear_all()
+	st_road.begin(Mesh.PRIMITIVE_TRIANGLES)
+	if road_material:
+		st_road.set_material(road_material)
+		
+	var curve := track.curve
+	var race_length = curve.get_baked_length()
+	var nb_of_point : int = race_length / segment_length
+
+	for i in range(nb_of_point):
+		var dist1 = float(i) * segment_length
+		var dist2 = float(i + 1) * segment_length
+
+		var t1 := curve.sample_baked_with_rotation(dist1, true)
+		var t2 := curve.sample_baked_with_rotation(dist2, true)
+
+		var fwd1 = t1.basis.z.normalized()
+		var fwd2 = t2.basis.z.normalized()
+
+		var right1 = t1.basis.x.normalized()
+		var right2 = t2.basis.x.normalized()
+		
+		var left1 = -right1
+		var left2 = -right2
+		
+		var up1 = t1.basis.y.normalized()
+		var up2 = t2.basis.y.normalized()
+
+		var p1 := t1.origin
+		if i == 0:
+			p1 += fwd1 * 0.05
+		var p2 := t2.origin
+
+		# Top vertices
+		var p1_right = p1 + right1 * road_width * 0.5
+		var p1_left = p1 - right1 * road_width * 0.5
+		var p2_right = p2 + right2 * road_width * 0.5
+		var p2_left = p2 - right2 * road_width * 0.5
+
+		# Bottom vertices
+		var p1_right_bottom = p1_right - up1 * road_thickness
+		var p1_left_bottom = p1_left - up1 * road_thickness
+		var p2_right_bottom = p2_right - up2 * road_thickness
+		var p2_left_bottom = p2_left - up2 * road_thickness
+
+		# Top face
+		create_rectangle(p1_right, p1_left, p2_left, p2_right, up1, up2, Vector2(0, dist1 / road_width), Vector2(1, dist2 / road_width))
+
+		# Bottom face (inverted normal)
+		create_rectangle(p1_left_bottom, p1_right_bottom, p2_right_bottom, p2_left_bottom, up1, up2, Vector2(1, dist1 / road_width), Vector2(0, dist2 / road_width))
+
+		# Right side face
+		create_rectangle(p1_right_bottom, p1_right, p2_right, p2_right_bottom, right1, right2, Vector2(dist1 / road_thickness, 0), Vector2(dist2 / road_thickness, 1))
+
+		# Left side face
+		create_rectangle(p1_left, p1_left_bottom, p2_left_bottom, p2_left, left1, left2, Vector2(dist1 / road_thickness, 0), Vector2(dist2 / road_thickness, 1))
+
+	var final_mesh = st_road.commit()
+	road_mesh_instance.mesh = final_mesh
+	
+	var shape = final_mesh.create_trimesh_shape()
+	road_shape.shape = shape
+
+func create_rectangle(
+	v1: Vector3, v2: Vector3, v3: Vector3, v4: Vector3,
+	normal1: Vector3, normal2: Vector3,
+	uv1: Vector2, uv2: Vector2
+):
+	# Triangle 1
+	st_road.set_uv(uv1)
+	st_road.set_normal(normal1)
+	st_road.add_vertex(v1)
+
+	st_road.set_uv(Vector2(uv1.x, uv2.y))
+	st_road.set_normal(normal1)
+	st_road.add_vertex(v2)
+
+	st_road.set_uv(uv2)
+	st_road.set_normal(normal2)
+	st_road.add_vertex(v3)
+
+	# Triangle 2
+	st_road.set_uv(uv2)
+	st_road.set_normal(normal2)
+	st_road.add_vertex(v3)
+
+	st_road.set_uv(Vector2(uv2.x, uv1.y))
+	st_road.set_normal(normal1)
+	st_road.add_vertex(v4)
+
+	st_road.set_uv(uv1)
+	st_road.set_normal(normal1)
+	st_road.add_vertex(v1)

entities/road/road.gd.uid

@@ -0,0 +1 @@
+uid://bgt66573ipmub

entities/road/road_path.tscn

@@ -0,0 +1,16 @@
+[gd_scene load_steps=3 format=3 uid="uid://cjk3phtyyiyty"]
+
+[ext_resource type="Script" uid="uid://bdw7xdf1lc3ud" path="res://entities/road/do_spline.gd" id="1_c4y0q"]
+
+[sub_resource type="Curve3D" id="Curve3D_p7e7j"]
+closed = true
+_data = {
+"points": PackedVector3Array(0.246495, 0, 4.21189, -0.246495, 0, -4.21189, 0, 0, 0, -4.24042, 0, 0.00829778, 4.24042, 0, -0.00829778, 10, 0, -7.75931, -4.21783, 0, -0.014848, 4.21783, 0, 0.014848, 20, 1.27448, 0, -4.24638, 0, 0.0109491, 4.24638, 0, -0.0109491, 30, 0, -7.64779, -2.44782, 0, -6.85357, 2.44782, 0, 6.85357, 40, 1.9489, 0, 12.6025, 0, -5.29505, -12.6025, 0, 5.29505, 35.1108, 0, 21.1888),
+"tilts": PackedFloat32Array(0, 0, 0, 0, 0, 0)
+}
+point_count = 6
+
+[node name="Track" type="Path3D"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.00397015, 0, 0)
+curve = SubResource("Curve3D_p7e7j")
+script = ExtResource("1_c4y0q")

project.godot

@@ -11,9 +11,46 @@ config_version=5
 [application]
 
 config/name="Looping"
+run/main_scene="uid://bd8skoxlvujam"
 config/features=PackedStringArray("4.4", "GL Compatibility")
 config/icon="res://icon.svg"
 
+[input]
+
+forward={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":87,"key_label":0,"unicode":122,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194320,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+back={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":83,"key_label":0,"unicode":115,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194322,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+right={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":68,"key_label":0,"unicode":100,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194321,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+left={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":65,"key_label":0,"unicode":113,"location":0,"echo":false,"script":null)
+, Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194319,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
+]
+}
+restart={
+"deadzone": 0.2,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"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":114,"location":0,"echo":false,"script":null)
+]
+}
+
+[physics]
+
+3d/physics_engine="Jolt Physics"
+
 [rendering]
 
 renderer/rendering_method="gl_compatibility"

scenes/main.tscn

@@ -1,3 +1,26 @@
-[gd_scene format=3 uid="uid://bd8skoxlvujam"]
+[gd_scene load_steps=5 format=3 uid="uid://bd8skoxlvujam"]
+
+[ext_resource type="PackedScene" uid="uid://d5co10opkoxg" path="res://entities/road/road.tscn" id="1_o5qli"]
+[ext_resource type="PackedScene" uid="uid://dgs0fqojgcmu3" path="res://entities/car/car.tscn" id="2_0wfyh"]
+[ext_resource type="PhysicsMaterial" uid="uid://doaljsb6138cp" path="res://entities/car/car_physic_mat.tres" id="3_sugp2"]
+
+[sub_resource type="Environment" id="Environment_0wfyh"]
 
 [node name="Main" type="Node3D"]
+
+[node name="Road" parent="." instance=ExtResource("1_o5qli")]
+road_width = 3.0
+
+[node name="Car" parent="." instance=ExtResource("2_0wfyh")]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.0846112, 3.64068, -0.427136)
+mass = 10.0
+physics_material_override = ExtResource("3_sugp2")
+
+[node name="Camera3D" type="Camera3D" parent="Car"]
+transform = Transform3D(-0.995019, 0, -0.0996845, -0.0423712, 0.905169, 0.422936, 0.0902313, 0.425053, -0.90066, 0.00947832, 1.60507, -2.49832)
+
+[node name="WorldEnvironment" type="WorldEnvironment" parent="."]
+environment = SubResource("Environment_0wfyh")
+
+[node name="DirectionalLight3D" type="DirectionalLight3D" parent="."]
+transform = Transform3D(0.903903, -0.229357, 0.361046, 0, 0.844085, 0.53621, -0.427737, -0.484682, 0.762971, 0, 3.75849, 0)