charging enemy

enemies/charging_car/charger_behavior.gd

@@ -0,0 +1,96 @@
+extends Node3D
+
+@export var noise: FastNoiseLite
+
+@onready var enemy: PoliceCar = get_parent()
+
+const CHARGE_COOLDOWN := 5. # time charger has to wait between charges before being able to charge again
+const CHARGE_COOLUP := 0.5 # time the charger has to see the player before charging
+
+const CHARGE_SPEED := 50.
+const HOLD_TIME := 1.
+const CHARGE_TIME := 16. / CHARGE_SPEED
+
+var cooldown := 0.
+var coolup := 0.
+
+var charge_clock := 0.
+
+func _start_charge() -> void:
+	charge_clock = 0.
+
+	enemy.default_movement = false
+	enemy.velocity = global_position.direction_to(Player.instance.global_position)
+	enemy.velocity *= CHARGE_SPEED
+	enemy.set_rotation_to_velocity()
+
+func _end_charge() -> void:
+	charge_clock = 0.
+	cooldown = CHARGE_COOLDOWN
+
+	enemy.default_movement = true
+	enemy.set_collision_mask_value(4, true)
+
+	%KnockUpArea.monitoring = false
+	%Meshes.position = Vector3.ZERO
+
+func _not_charging_process(delta: float) -> void:
+	cooldown -= delta
+	if cooldown > 0.: return
+
+	var player_pos := Player.instance.global_position
+
+	if global_position.distance_to(player_pos) > 15.:
+		print("too far")
+		coolup = 0.
+		return
+
+	var params := PhysicsRayQueryParameters3D.create(
+		global_position, player_pos, 4294967295, [enemy]
+	)
+	var raycast := get_world_3d().direct_space_state.intersect_ray(params)
+
+	if not raycast.is_empty() and raycast.collider is Player:
+		coolup += delta
+		if coolup > CHARGE_COOLUP:
+			_start_charge()
+	else:
+		print("raycast failed")
+		coolup = 0.
+
+func _charging_process(delta: float) -> void:
+	charge_clock += delta
+	if charge_clock > HOLD_TIME + CHARGE_TIME:
+		_end_charge()
+		return
+
+	if charge_clock < HOLD_TIME:
+		var x := noise.get_noise_1d(charge_clock * 10000)
+		var y := noise.get_noise_1d(-charge_clock * 10000)
+		%Meshes.position = Vector3(x, 0, y)
+	else:
+		%KnockUpArea.monitoring = true
+		enemy.set_collision_mask_value(4, false)
+
+		enemy.move_and_slide()
+
+
+
+func _process(delta: float) -> void:
+	if enemy.default_movement:
+		_not_charging_process(delta)
+	else:
+		_charging_process(delta)
+
+
+func _on_knock_up_area_body_entered(body: Node3D) -> void:
+	if body is PoliceCar and body != enemy and body.default_movement:
+		var e := body as PoliceCar
+
+		e.stunned = true
+		var t := e.create_tween()
+		t.set_trans(Tween.TRANS_QUAD)
+		t.tween_property(e, "position:y", e.position.y + 7.5, .6).set_ease(Tween.EASE_OUT)
+		t.tween_property(e, "position:y", e.position.y, .6).set_ease(Tween.EASE_IN)
+		await t.finished
+		e.stunned = false

enemies/charging_car/charger_behavior.gd.uid

@@ -0,0 +1 @@
+uid://d0ciymxj47qbc

enemies/charging_car/charging_car.tscn

@@ -0,0 +1,77 @@
+[gd_scene format=3 uid="uid://b8bqsk60jlnew"]
+
+[ext_resource type="PackedScene" uid="uid://oyqyvj5xo5mf" path="res://enemies/base_enemy.tscn" id="1_ovkbs"]
+[ext_resource type="Script" uid="uid://d0ciymxj47qbc" path="res://enemies/charging_car/charger_behavior.gd" id="2_ovkbs"]
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_8s2ff"]
+size = Vector3(2.8337402, 1.0512085, 1.2189941)
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_16nkq"]
+size = Vector3(2.1784668, 0.83740234, 1)
+
+[sub_resource type="PrismMesh" id="PrismMesh_16nkq"]
+
+[sub_resource type="BoxMesh" id="BoxMesh_idkrf"]
+
+[sub_resource type="BoxMesh" id="BoxMesh_8s2ff"]
+size = Vector3(0.1, 0.05, 0.2)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_ovkbs"]
+albedo_color = Color(1, 0.32, 0.32, 1)
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_gtwxk"]
+albedo_color = Color(0.26, 0.45733315, 1, 1)
+
+[sub_resource type="FastNoiseLite" id="FastNoiseLite_ovkbs"]
+
+[sub_resource type="BoxShape3D" id="BoxShape3D_ovkbs"]
+size = Vector3(1.8274536, 1.0043945, 1.3088379)
+
+[node name="ChargingCar" unique_id=206023291 instance=ExtResource("1_ovkbs")]
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="Hurtbox" parent_id_path=PackedInt32Array(688205599) index="0" unique_id=1037862249]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.15533447, 0.41860962, 0)
+shape = SubResource("BoxShape3D_8s2ff")
+debug_color = Color(0.99742216, 0, 0.17616406, 0.41960785)
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="." index="2" unique_id=1443830094]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.16711426, 0.4411621, 0)
+shape = SubResource("BoxShape3D_16nkq")
+
+[node name="Meshes" type="Node3D" parent="." index="3" unique_id=1589501183]
+unique_name_in_owner = true
+
+[node name="MeshInstance3D" type="MeshInstance3D" parent="Meshes" index="0" unique_id=1428296358]
+transform = Transform3D(-4.0897394e-08, 0.9356233, 0, -0.9356233, -4.0897394e-08, 0, 0, 0, 0.9356233, 0.79208755, 0.39598227, 0)
+mesh = SubResource("PrismMesh_16nkq")
+
+[node name="MeshInstance3D2" type="MeshInstance3D" parent="Meshes" index="1" unique_id=1095305852]
+transform = Transform3D(1.2590417, 0, 0, 0, 0.6540867, 0, 0, 0, 0.6540867, -0.2952547, 0.36984542, 0)
+mesh = SubResource("BoxMesh_idkrf")
+
+[node name="MeshInstance3D7" type="MeshInstance3D" parent="Meshes" index="2" unique_id=2040240859]
+transform = Transform3D(1.7975575, 0.87680507, 0, -0.87680507, 1.7975575, 0, 0, 0, 2, 0.5758674, 0.7817617, 0.24429089)
+mesh = SubResource("BoxMesh_8s2ff")
+surface_material_override/0 = SubResource("StandardMaterial3D_ovkbs")
+
+[node name="MeshInstance3D8" type="MeshInstance3D" parent="Meshes" index="3" unique_id=2068949320]
+transform = Transform3D(1.7975575, 0.87680507, 0, -0.87680507, 1.7975575, 0, 0, 0, 2, 0.58287287, 0.7783446, -0.23176795)
+mesh = SubResource("BoxMesh_8s2ff")
+surface_material_override/0 = SubResource("StandardMaterial3D_gtwxk")
+
+[node name="ChargerBehavior" type="Node3D" parent="." index="4" unique_id=520454998]
+script = ExtResource("2_ovkbs")
+noise = SubResource("FastNoiseLite_ovkbs")
+
+[node name="KnockUpArea" type="Area3D" parent="." index="5" unique_id=74486428]
+unique_name_in_owner = true
+collision_layer = 0
+collision_mask = 8
+monitoring = false
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="KnockUpArea" index="0" unique_id=1991351917]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 2.1195984, 0.44458008, 0)
+shape = SubResource("BoxShape3D_ovkbs")
+debug_color = Color(0.84, 0.65799993, 0, 0.41960785)
+
+[connection signal="body_entered" from="KnockUpArea" to="ChargerBehavior" method="_on_knock_up_area_body_entered"]

enemies/enemy.gd

@@ -13,6 +13,12 @@ var frame_count := 0
 
 var knockback := Vector3.ZERO
 
+var default_movement := true
+var stunned := false
+
+func set_rotation_to_velocity() -> void:
+	rotation.y = Vector2(velocity.x, -velocity.z).angle()
+
 func exp_lerp(a: Variant, b: Variant, decay: float, dt: float) -> Variant:
 	return lerp(a, b, 1 - exp(-decay * dt))
 
@@ -32,13 +38,16 @@ func _process_movement(delta: float) -> void:
 	velocity = velocity.limit_length(max_speed)
 
 func _process(delta: float) -> void:
+	if not default_movement: return
+	if stunned: return
+
 	frame_count = (frame_count + 1) % FRAME_IDXS
 	if frame_count == frame_idx:
 		_update_nav_agent()
 
 	if knockback.length() < 0.1:
 		_process_movement(delta)
-		rotation.y = Vector2(velocity.x, -velocity.z).angle()
+		set_rotation_to_velocity()
 		position.y = 0.01
 	else:
 		velocity = knockback
@@ -61,4 +70,3 @@ func hit(proj: Node3D, damage: float) -> bool:
 func _on_hurtbox_body_entered(body: Node3D) -> void:
 	if body is Player:
 		body.damage(self)
-