Add tire smoke

project.godot

@@ -8,6 +8,16 @@
 
 config_version=4
 
+_global_script_classes=[ {
+"base": "Particles",
+"class": "TireSmoke",
+"language": "GDScript",
+"path": "res://vehicles/tire_smoke.gd"
+} ]
+_global_script_class_icons={
+"TireSmoke": ""
+}
+
 [application]
 
 config/name="bugged-racing"

vehicles/beetlecar.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=7 format=2]
+[gd_scene load_steps=13 format=2]
 
 [ext_resource path="res://vehicles/buggy.gd" type="Script" id=1]
 [ext_resource path="res://assets/beetlecar.glb" type="PackedScene" id=2]
+[ext_resource path="res://vehicles/tire_smoke.tscn" type="PackedScene" id=3]
 
 [sub_resource type="Curve" id=3]
 _data = [ Vector2( 0, 0 ), 0.0, 2.58337, 0, 1, Vector2( 0.221698, 0.572727 ), 2.58337, 0.0, 1, 0, Vector2( 0.830189, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0 ), 0.0, 0.0, 0, 0 ]
@@ -16,6 +17,30 @@ extents = Vector3( 0.417676, 0.42291, 1.58775 )
 mix_rate = 5500.0
 buffer_length = 1.0
 
+[sub_resource type="Curve" id=9]
+_data = [ Vector2( 0, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0.493182 ), 0.0, 0.0, 0, 0 ]
+
+[sub_resource type="CurveTexture" id=10]
+curve = SubResource( 9 )
+
+[sub_resource type="ParticlesMaterial" id=7]
+direction = Vector3( 0, 0, -1 )
+gravity = Vector3( 0, 0.2, 0 )
+initial_velocity = 0.8
+scale = 0.1
+scale_random = 0.17
+scale_curve = SubResource( 10 )
+color = Color( 0.0705882, 0.0705882, 0.0705882, 0.435294 )
+
+[sub_resource type="SpatialMaterial" id=6]
+flags_transparent = true
+vertex_color_use_as_albedo = true
+
+[sub_resource type="SphereMesh" id=8]
+material = SubResource( 6 )
+radial_segments = 4
+rings = 3
+
 [node name="beetlecar" instance=ExtResource( 2 )]
 mass = 140.0
 script = ExtResource( 1 )
@@ -77,3 +102,22 @@ __meta__ = {
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.14201, 0.968668 )
 stream = SubResource( 2 )
 unit_db = 14.0
+
+[node name="Smoke" type="Particles" parent="." index="9"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.31514, 0.383062, -1.51247 )
+amount = 12
+local_coords = false
+process_material = SubResource( 7 )
+draw_pass_1 = SubResource( 8 )
+
+[node name="rr_tire_smoke" parent="." index="10" instance=ExtResource( 3 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.621508, 0.0502438, -0.83483 )
+
+[node name="rl_tire_smoke" parent="." index="11" instance=ExtResource( 3 )]
+transform = Transform( 1, 0, 0, 0, 1, -1.50996e-07, 0, 1.50996e-07, 1, 0.621506, 0.0502438, -0.83483 )
+
+[node name="fr_tire_smoke" parent="." index="12" instance=ExtResource( 3 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.621508, 0.0502438, 1.19336 )
+
+[node name="fl_tire_smoke" parent="." index="13" instance=ExtResource( 3 )]
+transform = Transform( 1, 0, 0, 0, 1, -1.50996e-07, 0, 1.50996e-07, 1, 0.621506, 0.0502438, 1.19336 )

vehicles/buggy.gd

@@ -35,6 +35,10 @@ onready var frwheel: VehicleWheel = $front_right
 onready var flwheel: VehicleWheel = $front_left
 onready var rrwheel: VehicleWheel = $rear_right
 onready var rlwheel: VehicleWheel = $rear_left
+onready var frsmoke: TireSmoke = $fr_tire_smoke
+onready var flsmoke: TireSmoke = $fl_tire_smoke
+onready var rrsmoke: TireSmoke = $rr_tire_smoke
+onready var rlsmoke: TireSmoke = $rl_tire_smoke
 
 onready var engine_sound_player: AudioStreamPlayer3D = $engine_sound_player
 onready var engine_sound_playback: AudioStreamPlayback = $engine_sound_player.get_stream_playback()
@@ -76,6 +80,10 @@ func _has_traction():
 			return true
 	return false
 
+func _update_wheels_smoke():
+	for wheelnsmoke in [[frwheel, frsmoke], [flwheel, flsmoke], [rrwheel, rrsmoke], [rlwheel, rlsmoke]]:
+		wheelnsmoke[1].update(wheelnsmoke[0].get_skidinfo())
+
 func _lerp_rpm(from, to, delta, factor):
 	var new_val = lerp(from, to, factor)
 	if abs(from - new_val) > MAX_RPM_LOSS_PS * delta:
@@ -84,6 +92,7 @@ func _lerp_rpm(from, to, delta, factor):
 	return new_val
 
 func _physics_process(delta: float):
+	_update_wheels_smoke()
 	clutch_position = Input.get_action_strength("clutch")
 	_handle_gear_switch(delta)
 	var throttle = Input.get_action_strength("throttle")

vehicles/buggy.tscn

@@ -1,6 +1,7 @@
-[gd_scene load_steps=7 format=2]
+[gd_scene load_steps=13 format=2]
 
 [ext_resource path="res://assets/basic_buggy.glb" type="PackedScene" id=1]
+[ext_resource path="res://vehicles/tire_smoke.tscn" type="PackedScene" id=2]
 [ext_resource path="res://vehicles/buggy.gd" type="Script" id=3]
 
 [sub_resource type="Curve" id=2]
@@ -15,6 +16,30 @@ extents = Vector3( 0.521885, 0.334919, 1.78849 )
 [sub_resource type="AudioStreamGenerator" id=3]
 mix_rate = 5500.0
 
+[sub_resource type="Curve" id=8]
+_data = [ Vector2( 0, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0.205682 ), 0.0, 0.0, 0, 0 ]
+
+[sub_resource type="CurveTexture" id=9]
+curve = SubResource( 8 )
+
+[sub_resource type="ParticlesMaterial" id=5]
+direction = Vector3( 0, 0, -1 )
+gravity = Vector3( 0, 0.2, 0 )
+initial_velocity = 0.8
+scale = 0.2
+scale_random = 0.25
+scale_curve = SubResource( 9 )
+color = Color( 0.521569, 0.521569, 0.521569, 0.435294 )
+
+[sub_resource type="SpatialMaterial" id=10]
+flags_transparent = true
+vertex_color_use_as_albedo = true
+
+[sub_resource type="SphereMesh" id=7]
+material = SubResource( 10 )
+radial_segments = 4
+rings = 3
+
 [node name="buggy" instance=ExtResource( 1 )]
 mass = 150.0
 script = ExtResource( 3 )
@@ -80,3 +105,21 @@ __meta__ = {
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.14201, 0.968668 )
 stream = SubResource( 3 )
 unit_db = 14.0
+
+[node name="Smoke" type="Particles" parent="." index="9"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.855953, -1.87797 )
+local_coords = false
+process_material = SubResource( 5 )
+draw_pass_1 = SubResource( 7 )
+
+[node name="fl_tire_smoke" parent="." index="10" instance=ExtResource( 2 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.950754, -0.0380455, 1.41438 )
+
+[node name="fr_tire_smoke" parent="." index="11" instance=ExtResource( 2 )]
+transform = Transform( 1, 0, 0, 0, 1, -1.50996e-07, 0, 1.50996e-07, 1, -0.950754, -0.038045, 1.41438 )
+
+[node name="rl_tire_smoke" parent="." index="12" instance=ExtResource( 2 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.950753, -0.0380455, -1.41438 )
+
+[node name="rr_tire_smoke" parent="." index="13" instance=ExtResource( 2 )]
+transform = Transform( 1, 0, 0, 0, 1, -1.50996e-07, 0, 1.50996e-07, 1, -0.950755, -0.038045, -1.41438 )

vehicles/tire_smoke.gd

@@ -0,0 +1,8 @@
+class_name TireSmoke
+extends Particles
+
+func update(skidinfo: float) -> void:
+	if skidinfo < 0.5:
+		emitting = true
+	else:
+		emitting = false

vehicles/tire_smoke.tscn

@@ -0,0 +1,36 @@
+[gd_scene load_steps=7 format=2]
+
+[ext_resource path="res://vehicles/tire_smoke.gd" type="Script" id=1]
+
+[sub_resource type="Curve" id=1]
+_data = [ Vector2( 0, 1 ), 0.0, 0.0, 0, 0, Vector2( 1, 0.0170454 ), 0.0, 0.0, 0, 0 ]
+
+[sub_resource type="CurveTexture" id=2]
+curve = SubResource( 1 )
+
+[sub_resource type="ParticlesMaterial" id=3]
+gravity = Vector3( 0, 0.1, 0 )
+initial_velocity = 0.2
+scale = 0.1
+scale_random = 0.36
+scale_curve = SubResource( 2 )
+color = Color( 0.839216, 0.839216, 0.839216, 0.45098 )
+
+[sub_resource type="SpatialMaterial" id=4]
+flags_transparent = true
+vertex_color_use_as_albedo = true
+
+[sub_resource type="SphereMesh" id=5]
+material = SubResource( 4 )
+radial_segments = 4
+rings = 4
+
+[node name="tire_smoke" type="Particles"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.541801, 0 )
+emitting = false
+lifetime = 0.49
+explosiveness = 0.54
+local_coords = false
+process_material = SubResource( 3 )
+draw_pass_1 = SubResource( 5 )
+script = ExtResource( 1 )