♻️ move weapons into entities

entities/player/player.tscn

@@ -2,10 +2,10 @@
 
 [ext_resource type="Script" path="res://entities/player/player.gd" id="1_mk68k"]
 [ext_resource type="PackedScene" uid="uid://drbefw6akui2v" path="res://entities/player/assets/vanguard.tscn" id="2_beyex"]
-[ext_resource type="Shape3D" path="res://entities/player/collision_shape.tres" id="2_vjqny"]
+[ext_resource type="Shape3D" uid="uid://cb8esdlnottdn" path="res://entities/player/collision_shape.tres" id="2_vjqny"]
 [ext_resource type="PackedScene" uid="uid://bcv81ku26xo" path="res://interfaces/hud/hud.tscn" id="3_ccety"]
-[ext_resource type="PackedScene" uid="uid://c8co0qa2omjmh" path="res://weapons/space_gun/space_gun.tscn" id="4_lhn5w"]
-[ext_resource type="PackedScene" uid="uid://dn1tcakam5egs" path="res://weapons/space_gun/projectile.tscn" id="5_lvaut"]
+[ext_resource type="PackedScene" uid="uid://c8co0qa2omjmh" path="res://entities/weapons/space_gun/space_gun.tscn" id="4_rm831"]
+[ext_resource type="PackedScene" uid="uid://dn1tcakam5egs" path="res://entities/weapons/space_gun/projectile.tscn" id="5_o1jib"]
 [ext_resource type="PackedScene" uid="uid://bof3mg7wgxrmn" path="res://components/health_component.tscn" id="5_t6i6e"]
 [ext_resource type="Script" path="res://entities/player/player_input.gd" id="6_ymcrr"]
 [ext_resource type="PackedScene" uid="uid://dsysi2rd3bu76" path="res://interfaces/hud/iff.tscn" id="7_8hc80"]
@@ -27,26 +27,26 @@ length = 0.001
 tracks/0/type = "value"
 tracks/0/imported = false
 tracks/0/enabled = true
-tracks/0/path = NodePath("SpringArm3D/Inventory/SpaceGun:position")
+tracks/0/path = NodePath("SpringArm3D/Inventory/SpaceGun:rotation")
 tracks/0/interp = 1
 tracks/0/loop_wrap = true
 tracks/0/keys = {
 "times": PackedFloat32Array(0),
 "transitions": PackedFloat32Array(1),
 "update": 0,
-"values": [Vector3(0.244668, -0.229311, -0.30332)]
+"values": [Vector3(0, 3.14159, 0)]
 }
 tracks/1/type = "value"
 tracks/1/imported = false
 tracks/1/enabled = true
-tracks/1/path = NodePath("SpringArm3D/Inventory/SpaceGun:rotation")
+tracks/1/path = NodePath("SpringArm3D/Inventory/SpaceGun:position")
 tracks/1/interp = 1
 tracks/1/loop_wrap = true
 tracks/1/keys = {
 "times": PackedFloat32Array(0),
 "transitions": PackedFloat32Array(1),
 "update": 0,
-"values": [Vector3(0, 3.14159, 0)]
+"values": [Vector3(0.244668, -0.229311, -0.30332)]
 }
 tracks/2/type = "value"
 tracks/2/imported = false
@@ -107,26 +107,26 @@ loop_mode = 1
 tracks/0/type = "value"
 tracks/0/imported = false
 tracks/0/enabled = true
-tracks/0/path = NodePath("SpringArm3D/Inventory/SpaceGun:position")
+tracks/0/path = NodePath("SpringArm3D/Inventory/SpaceGun:rotation")
 tracks/0/interp = 1
 tracks/0/loop_wrap = true
 tracks/0/keys = {
 "times": PackedFloat32Array(0, 1.5),
 "transitions": PackedFloat32Array(-2, -2),
 "update": 0,
-"values": [Vector3(0.244668, -0.229311, -0.30332), Vector3(0.244668, -0.26057, -0.30332)]
+"values": [Vector3(0, 3.14159, 0), Vector3(0.114371, 3.14159, -1.73453e-08)]
 }
 tracks/1/type = "value"
 tracks/1/imported = false
 tracks/1/enabled = true
-tracks/1/path = NodePath("SpringArm3D/Inventory/SpaceGun:rotation")
+tracks/1/path = NodePath("SpringArm3D/Inventory/SpaceGun:position")
 tracks/1/interp = 1
 tracks/1/loop_wrap = true
 tracks/1/keys = {
 "times": PackedFloat32Array(0, 1.5),
 "transitions": PackedFloat32Array(-2, -2),
 "update": 0,
-"values": [Vector3(0, 3.14159, 0), Vector3(0.114371, 3.14159, -1.73453e-08)]
+"values": [Vector3(0.244668, -0.229311, -0.30332), Vector3(0.244668, -0.26057, -0.30332)]
 }
 
 [sub_resource type="Animation" id="Animation_p84l0"]
@@ -134,26 +134,26 @@ resource_name = "shoot"
 tracks/0/type = "value"
 tracks/0/imported = false
 tracks/0/enabled = true
-tracks/0/path = NodePath("SpringArm3D/Inventory/SpaceGun:position")
+tracks/0/path = NodePath("SpringArm3D/Inventory/SpaceGun:rotation")
 tracks/0/interp = 1
 tracks/0/loop_wrap = true
 tracks/0/keys = {
 "times": PackedFloat32Array(0, 1),
 "transitions": PackedFloat32Array(0.5, 1),
 "update": 0,
-"values": [Vector3(0.244668, -0.204488, -0.268482), Vector3(0.244668, -0.229311, -0.30332)]
+"values": [Vector3(-0.0584511, 3.14159, 8.83593e-09), Vector3(0, 3.14159, 0)]
 }
 tracks/1/type = "value"
 tracks/1/imported = false
 tracks/1/enabled = true
-tracks/1/path = NodePath("SpringArm3D/Inventory/SpaceGun:rotation")
+tracks/1/path = NodePath("SpringArm3D/Inventory/SpaceGun:position")
 tracks/1/interp = 1
 tracks/1/loop_wrap = true
 tracks/1/keys = {
 "times": PackedFloat32Array(0, 1),
 "transitions": PackedFloat32Array(0.5, 1),
 "update": 0,
-"values": [Vector3(-0.0584511, 3.14159, 8.83593e-09), Vector3(0, 3.14159, 0)]
+"values": [Vector3(0.244668, -0.204488, -0.268482), Vector3(0.244668, -0.229311, -0.30332)]
 }
 
 [sub_resource type="AnimationLibrary" id="AnimationLibrary_hg307"]
@@ -244,9 +244,9 @@ near = 0.1
 
 [node name="Inventory" type="Node3D" parent="SpringArm3D"]
 
-[node name="SpaceGun" parent="SpringArm3D/Inventory" instance=ExtResource("4_lhn5w")]
+[node name="SpaceGun" parent="SpringArm3D/Inventory" instance=ExtResource("4_rm831")]
 transform = Transform3D(-1, 0, 2.53518e-06, 0, 1, 0, -2.53518e-06, 0, -1, 0.244668, -0.229311, -0.30332)
-PROJECTILE = ExtResource("5_lvaut")
+PROJECTILE = ExtResource("5_o1jib")
 
 [node name="SpineIKTarget" type="Node3D" parent="SpringArm3D"]
 transform = Transform3D(-1, 0, -8.74228e-08, 0, 1, 0, 8.74228e-08, 0, -1, 0, 0, 0)

entities/weapons/space_gun/assets/material.tres

@@ -0,0 +1,3 @@
+[gd_resource type="ShaderMaterial" format=3 uid="uid://de6t4olk7hrs1"]
+
+[resource]

entities/weapons/space_gun/projectile.gd

@@ -0,0 +1,50 @@
+# This file is part of open-fpsz.
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+class_name Projectile extends Node3D
+
+@export_category("Parameters")
+@export var EXPLOSION : PackedScene
+@export var speed : float = 78.4 # m/s
+@export var lifespan : float = 5.0 # in seconds
+
+@onready var shape_cast = $ShapeCast3D
+@onready var game = get_tree().get_current_scene()
+
+var velocity : Vector3 = Vector3.ZERO
+
+func _ready():
+	var lifespan_timer = Timer.new()
+	lifespan_timer.wait_time = lifespan
+	lifespan_timer.one_shot = true
+	lifespan_timer.autostart = true
+	lifespan_timer.timeout.connect(self_destruct)
+	add_child(lifespan_timer)
+
+func self_destruct():
+	explode(position)
+
+func explode(spawn_location):
+	var spawned_explosion = EXPLOSION.instantiate()
+	spawned_explosion.position = spawn_location
+	game.add_child(spawned_explosion)
+	queue_free()
+
+func _physics_process(delta):
+	var previous_position = global_position
+	global_position += velocity * delta
+	shape_cast.target_position = to_local(previous_position)
+	if shape_cast.is_colliding():
+		var contact_point = shape_cast.collision_result[0].point
+		explode(contact_point)

entities/weapons/space_gun/projectile.tscn

@@ -0,0 +1,49 @@
+[gd_scene load_steps=7 format=3 uid="uid://dn1tcakam5egs"]
+
+[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile.gd" id="1_4j1dp"]
+[ext_resource type="PackedScene" uid="uid://8atq41j7wd55" path="res://entities/weapons/space_gun/projectile_explosion.tscn" id="2_llml6"]
+[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile_trail.gd" id="3_ygqbh"]
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_4a265"]
+transparency = 1
+blend_mode = 1
+cull_mode = 2
+shading_mode = 0
+vertex_color_use_as_albedo = true
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_o6j55"]
+albedo_color = Color(0, 0.498039, 0.854902, 1)
+emission_enabled = true
+emission = Color(0.482353, 0.65098, 1, 1)
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_umtte"]
+radius = 0.15
+
+[node name="Projectile" type="Node3D"]
+script = ExtResource("1_4j1dp")
+EXPLOSION = ExtResource("2_llml6")
+
+[node name="Trail3D" type="MeshInstance3D" parent="."]
+material_override = SubResource("StandardMaterial3D_4a265")
+script = ExtResource("3_ygqbh")
+_from_width = 0.15
+_scale_acceleration = 0.5
+_lifespan = 0.25
+_start_color = Color(0, 0.498039, 0.854902, 1)
+_end_color = Color(1, 1, 1, 0)
+
+[node name="Mesh" type="CSGSphere3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 0.2, 0, 0, 0, 1, 0, 0, 0)
+radius = 0.15
+radial_segments = 24
+rings = 8
+material = SubResource("StandardMaterial3D_o6j55")
+
+[node name="ShapeCast3D" type="ShapeCast3D" parent="."]
+transform = Transform3D(1, 0, 0, 0, 0.2, 0, 0, 0, 1, 0, 0, 0)
+shape = SubResource("SphereShape3D_umtte")
+target_position = Vector3(0, 0, 0)
+margin = 0.1
+max_results = 1
+collision_mask = 2147483649
+debug_shape_custom_color = Color(1, 0, 0, 1)

entities/weapons/space_gun/projectile_explosion.gd

@@ -0,0 +1,23 @@
+# This file is part of open-fpsz.
+# 
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+extends Node3D
+
+@onready var fire = $Fire
+@onready var explosive_damage : ExplosiveDamageComponent = $ExplosiveDamageComponent
+var explosion_effect_pending : bool = false
+
+func _ready():
+	fire.emitting = true
+	fire.finished.connect(func(): queue_free())

entities/weapons/space_gun/projectile_explosion.tscn

@@ -0,0 +1,48 @@
+[gd_scene load_steps=9 format=3 uid="uid://8atq41j7wd55"]
+
+[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile_explosion.gd" id="1_fp5td"]
+[ext_resource type="PackedScene" uid="uid://ds1hekx1dq1bg" path="res://components/explosive_damage_component.tscn" id="2_d4sf4"]
+
+[sub_resource type="Curve" id="Curve_rg204"]
+_data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="CurveTexture" id="CurveTexture_08dbu"]
+curve = SubResource("Curve_rg204")
+
+[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_3mf41"]
+spread = 180.0
+initial_velocity_min = 12.0
+initial_velocity_max = 12.0
+scale_curve = SubResource("CurveTexture_08dbu")
+
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_wpu51"]
+albedo_color = Color(0.819608, 0, 0, 1)
+emission_enabled = true
+emission = Color(1, 0.254902, 0.109804, 1)
+emission_energy_multiplier = 4.0
+
+[sub_resource type="SphereMesh" id="SphereMesh_k3pnh"]
+material = SubResource("StandardMaterial3D_wpu51")
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_mlo2k"]
+radius = 5.0
+
+[node name="ProjectileExplosion" type="Node3D"]
+script = ExtResource("1_fp5td")
+
+[node name="Fire" type="GPUParticles3D" parent="."]
+emitting = false
+amount = 24
+lifetime = 0.5
+one_shot = true
+explosiveness = 1.0
+fixed_fps = 60
+process_material = SubResource("ParticleProcessMaterial_3mf41")
+draw_pass_1 = SubResource("SphereMesh_k3pnh")
+
+[node name="ExplosiveDamageComponent" parent="." instance=ExtResource("2_d4sf4")]
+damage = 35
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="ExplosiveDamageComponent"]
+shape = SubResource("SphereShape3D_mlo2k")

entities/weapons/space_gun/projectile_trail.gd

@@ -0,0 +1,94 @@
+# This file is part of open-fpsz.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+class_name Trail3D extends MeshInstance3D
+
+var _points = [] # 3D points of trail
+var _widths = [] # Calculated widths of trail
+var _lifespans = [] # Trail point lifespans
+
+@export var _trail_enabled : bool = true # Is trail shown?
+
+@export var _from_width : float = 0.5 # Starting width
+@export var _to_width : float = 0.0 # Ending width
+
+@export_range(0.5, 1.5) var _scale_acceleration : float = 1.0 # Scaling speed
+
+@export var _motion_delta : float = 0.1 # Smoothness of trail
+@export var _lifespan : float = 1.0 # Duration of trail
+
+@export var _start_color : Color = Color(1.0, 1.0, 1.0, 1.0) # Start color
+@export var _end_color : Color = Color(1.0, 1.0, 1.0, 1.0) # End color
+
+var _old_pos : Vector3 # Previous pos
+
+func _append_point():
+	_points.append(get_global_transform().origin)
+	_widths.append([
+		get_global_transform().basis.x * _from_width,
+		get_global_transform().basis.x * _from_width - get_global_transform().basis.x * _to_width
+	])
+	_lifespans.append(0.0)
+
+func _remove_point(i):
+	_points.remove_at(i)
+	_widths.remove_at(i)
+	_lifespans.remove_at(i)
+
+func _ready():
+	_old_pos = get_global_transform().origin
+	mesh = ImmediateMesh.new()
+
+func _process(delta):
+	if(_old_pos - get_global_transform().origin).length() > _motion_delta and _trail_enabled:
+		_append_point() # Create new point
+		_old_pos = get_global_transform().origin # Update previous position to current position coordinates
+
+	# Update the lifespan
+	var p = 0
+	var max_points = _points.size()
+	while p < max_points:
+		_lifespans[p] += delta
+		if _lifespans[p] > _lifespan:
+			_remove_point(p)
+			p -= 1
+			if (p < 0): p = 0
+
+		max_points = _points.size()
+		p += 1
+
+	mesh.clear_surfaces()
+
+	# If less than 2 points, stop rendering trail
+	if _points.size() < 2:
+		return
+
+	# Render new mesh for each point
+	mesh.surface_begin(Mesh.PRIMITIVE_TRIANGLE_STRIP)
+
+	for i in range(_points.size()):
+		var t = float(i) / (_points.size() - 1.0)
+		var curr_color = _start_color.lerp(_end_color, 1 - t)
+		mesh.surface_set_color(curr_color)
+
+		var curr_width = _widths[i][0] - pow(1 - t, _scale_acceleration) * _widths[i][1]
+
+		var t0 = i / _points.size()
+		var t1 = t
+
+		mesh.surface_set_uv(Vector2(t0, 0))
+		mesh.surface_add_vertex(to_local(_points[i] + curr_width))
+		mesh.surface_set_uv(Vector2(t1, 1))
+		mesh.surface_add_vertex(to_local(_points[i] - curr_width))
+	mesh.surface_end()

entities/weapons/space_gun/space_gun.gd

@@ -0,0 +1,47 @@
+# This file is part of open-fpsz.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+extends Node3D
+class_name SpaceGun
+
+@export var PROJECTILE : PackedScene
+
+@onready var nozzle = $Nozzle
+@onready var inventory = get_parent()
+
+enum WeaponState { WEAPON_READY, WEAPON_RELOADING }
+
+var weapon_state : WeaponState = WeaponState.WEAPON_READY
+
+const inheritance : float = .5 # ratio
+const reload_time : float = 1. # seconds
+
+func can_fire():
+	return weapon_state == WeaponState.WEAPON_READY
+
+func fire_primary():
+	if not can_fire():
+		return
+
+	var projectile = PROJECTILE.instantiate()
+	projectile.transform = nozzle.global_transform
+	projectile.velocity = nozzle.global_basis.z.normalized() * projectile.speed
+	var inheritance_factor = clamp(inheritance, 0., 1.)
+	projectile.velocity += (inventory.owner.linear_velocity * inheritance_factor)
+	inventory.owner.add_sibling(projectile)
+	var collider = projectile.shape_cast
+	collider.add_exception(inventory.owner)
+	weapon_state = WeaponState.WEAPON_RELOADING
+	await get_tree().create_timer(reload_time).timeout
+	weapon_state = WeaponState.WEAPON_READY