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entities/weapons/automatic_weapon.gd

@@ -0,0 +1,29 @@
+# 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 AutomaticWeapon extends Weapon
+
+var _auto_trigger := Timer.new()
+
+func _init() -> void:
+	super._init()
+	_auto_trigger.timeout.connect(trigger)
+	add_child(_auto_trigger)
+
+func _on_primary(pressed: bool) -> void:
+	if pressed:
+		trigger()
+		_auto_trigger.start(cooldown)
+	else: 
+		_auto_trigger.stop()

entities/weapons/chaingun/chaingun.gd

@@ -12,33 +12,44 @@
 #
 # 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 ChainGun extends Node3D
+class_name ChainGun extends AutomaticWeapon
 
-@export_range(0, 250) var ammo : int = 250
-@export var fire_rate : float = .1 # seconds
-@export var reload_time : float = 0. # seconds
+@export var _PROJECTILE : PackedScene
+## The factor of velocity from the owner of this [Weapon] inherited by this [Projectile].
+@export_range(0., 1., .01) var inheritance : float = 1.
 
-@export_category("Animations")
 @export var anim_player : AnimationPlayer
+## The angular deviation from ideal line of fire in degrees
+@export var min_spread: float
+## The maximum angle the spread will increase to during heatup.
+@export var max_spread: float
+## The amount of time it takes for the chaingun to spin up or spin down.
+@export var spin_period: float
+## The amount of time it takes for the chaingun to overheat.
+@export var heat_period: float
+#@export var heat_time: float
+## The fraction of the [member heat_period] at which the gun can start firing again
+@export var cooldown_threshold: float
+## Multiplier for the speed when calculating cooldown/heatup
+@export var speed_cooldown_factor: float
+## The [Shader] responsible for rendering heat while firing.
+@export var heat_shader: Shader
+# heat flag
+var overheated: bool
 
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-	pass # Replace with function body.
-
-func trigger() -> void:
+func _on_triggered() -> void:
 	# play the fire animation
 	anim_player.play("fire")
 	# init projectile
-	var projectile : Node3D = $ProjectileSpawner.new_projectile(
-		ChainGunProjectile,
-		owner.linear_velocity,
-		owner.match_participant
-	)
-	# add to owner of player for now
-	Global.type.add_child(projectile)
+	var projectile : ChainGunProjectile = _PROJECTILE.instantiate()
+	projectile.velocity = projectile.speed * $Nozzle.global_basis.z.normalized() + owner.linear_velocity * inheritance
+	projectile.source = owner
+	owner.add_child(projectile)
+	projectile.global_transform = $Nozzle.global_transform
 	projectile.shape_cast.add_exception(owner)
 
 func _on_visibility_changed() -> void:
 	if self.visible:
-		anim_player.play("equip")
+		#anim_player.play("equip")
 		#self.sounds.play("equip")
+		pass

entities/weapons/chaingun/chaingun.tscn

@@ -1,19 +1,23 @@
-[gd_scene load_steps=5 format=3 uid="uid://b0xql5hi0b52y"]
+[gd_scene load_steps=4 format=3 uid="uid://b0xql5hi0b52y"]
 
 [ext_resource type="PackedScene" uid="uid://cumv8wij5uufk" path="res://entities/weapons/chaingun/assets/chaingun.glb" id="1_d8tdv"]
 [ext_resource type="Script" path="res://entities/weapons/chaingun/chaingun.gd" id="2_qsqeh"]
-[ext_resource type="Script" path="res://entities/components/projectile_spawner.gd" id="3_knyrc"]
 [ext_resource type="PackedScene" uid="uid://b0sfwgilfbpx5" path="res://entities/weapons/chaingun/projectile.tscn" id="4_p63ts"]
 
 [node name="ChainGun" node_paths=PackedStringArray("anim_player") instance=ExtResource("1_d8tdv")]
 script = ExtResource("2_qsqeh")
+_PROJECTILE = ExtResource("4_p63ts")
 anim_player = NodePath("AnimationPlayer")
-
-[node name="ProjectileSpawner" type="Marker3D" parent="." index="0"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.124544, 0.476417)
-script = ExtResource("3_knyrc")
-PROJECTILE = ExtResource("4_p63ts")
-inheritance = 1.0
+min_spread = 1.0
+max_spread = 4.0
+spin_period = 0.5
+heat_period = 3.0
+cooldown_threshold = 1.7
+speed_cooldown_factor = 0.001
+ammo = 150
+max_ammo = 150
+ammo_usage = 1
+cooldown = 0.1
 
 [node name="Skeleton3D" parent="Armature" index="0"]
 bones/1/rotation = Quaternion(3.09086e-08, 0.707107, 0.707107, 3.09086e-08)
@@ -32,14 +36,18 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.692504, 1.30946)
 [node name="Grip" parent="Armature/Skeleton3D" index="3"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.692504, 1.30946)
 
-[node name="AnimationPlayer" parent="." index="2"]
+[node name="AnimationPlayer" parent="." index="1"]
 autoplay = "idle"
 
-[node name="Barrels" type="BoneAttachment3D" parent="." index="3"]
+[node name="Barrels" type="BoneAttachment3D" parent="." index="2"]
 transform = Transform3D(-1, 0, 8.74227e-08, 8.74227e-08, 0, 1, 0, 1, 0, -2.32831e-10, 0.692504, 0.756307)
 bone_name = "barrels"
 bone_idx = 1
 use_external_skeleton = true
 external_skeleton = NodePath("../Armature/Skeleton3D")
 
+[node name="Nozzle" type="Marker3D" parent="." index="3"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -2.98023e-08, 0.123522, 0.477262)
+
+[connection signal="triggered" from="." to="." method="_on_triggered"]
 [connection signal="visibility_changed" from="." to="." method="_on_visibility_changed"]

entities/weapons/chaingun/projectile.gd

@@ -12,44 +12,19 @@
 #
 # 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 ChainGunProjectile extends Node3D
+class_name ChainGunProjectile extends Projectile
 
-@export var speed : float = 180. # m/s
-@export var lifespan : float = .5 # in seconds
-@export var build_up_time : float = .6 # seconds
-
-var shooter : MatchParticipant
-var velocity : Vector3 = Vector3.ZERO
-
-@onready var shape_cast : ShapeCast3D = $ShapeCast3D
-
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-	$Timer.wait_time = lifespan
-
-func _on_timer_timeout() -> void:
-	queue_free()
-
-func _physics_process(delta : float) -> void:
+func _physics_process(delta: float) -> void:
+	var previous_global_position: Vector3 = global_position
 	global_position += velocity * delta
-	if shape_cast.is_colliding():
-		for collision_id in shape_cast.get_collision_count():
-			var collider : Object = shape_cast.get_collider(collision_id)
+	# handle collision
+	if shape_cast:
+		var local_global_position: Vector3 = to_local(previous_global_position)
+		shape_cast.target_position = Vector3(
+			local_global_position.x, -local_global_position.z, local_global_position.y)
+		shape_cast.target_position = shape_cast.target_position
+		if shape_cast.is_colliding():
+			var collider: Node = shape_cast.get_collider(0)
 			if collider is Player:
-				if is_multiplayer_authority():
-					assert(shooter)
-					collider.health_component.damage.rpc(25, shooter.player_id, shooter.team_id)
-		queue_free()
-
-## This method is a parameterized constructor for the [ChainGunProjectile] scene of the [ChainGun]
-static func new_projectile(
-	origin : Marker3D, 
-	inherited_velocity : Vector3,
-	_shooter : MatchParticipant,
-	scene : PackedScene
-) -> ChainGunProjectile:
-	var projectile : ChainGunProjectile = scene.instantiate()
-	projectile.shooter = _shooter
-	projectile.transform = origin.global_transform
-	projectile.velocity = origin.global_basis.z.normalized() * projectile.speed + inherited_velocity
-	return projectile
+				collider.damage.emit(source, collider, damage)
+			destroy(shape_cast.collision_result[0].point)

entities/weapons/chaingun/projectile.tscn

@@ -9,17 +9,15 @@ height = 2.5
 
 [node name="ChainGunProjectile" instance=ExtResource("1_p7mmn")]
 script = ExtResource("2_jjfwk")
+speed = 128.0
+lifespan = 3.0
+damage = 15
 
 [node name="ShapeCast3D" type="ShapeCast3D" parent="." index="0"]
-transform = Transform3D(1, 0, 0, 0, -4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 4.29628)
+transform = Transform3D(1, 0, 0, 0, -4.37114e-08, -1, 0, 1, -4.37114e-08, 0, 0, 1.25)
 shape = SubResource("CapsuleShape3D_dbodg")
-target_position = Vector3(0, -3, 0)
+target_position = Vector3(0, 0, 0)
 collision_mask = 2147483653
 
 [node name="tracerinner" parent="." index="1"]
-transform = Transform3D(0.0505494, 0, 0, 0, 0.0505494, 0, 0, 0, 0.0505494, 0, 0, 2.49628)
-
-[node name="Timer" type="Timer" parent="." index="2"]
-autostart = true
-
-[connection signal="timeout" from="Timer" to="." method="_on_timer_timeout"]
+transform = Transform3D(0.0505494, 0, 0, 0, 0.0505494, 0, 0, 0, 0.0505494, 0, 0, 2.5)

entities/weapons/grenade_launcher/assets/resources/explosion_material.tres

@@ -0,0 +1,19 @@
+[gd_resource type="ShaderMaterial" load_steps=4 format=3 uid="uid://c80t026c2gpxx"]
+
+[ext_resource type="Shader" uid="uid://d2aeepgs6xnsg" path="res://entities/weapons/grenade_launcher/assets/resources/explosion_shader.tres" id="1_dmawi"]
+[ext_resource type="Texture2D" uid="uid://dt6c44uknktrg" path="res://entities/weapons/grenade_launcher/assets/textures/explosion_texture_alb.png" id="2_4up7w"]
+
+[sub_resource type="CompressedTexture2D" id="CompressedTexture2D_itmuc"]
+load_path = "res://.godot/imported/explosion_texture_flowmap.png-3137b307308713f172b3be796ef584b9.s3tc.ctex"
+
+[resource]
+render_priority = 0
+shader = ExtResource("1_dmawi")
+shader_parameter/albedo = Color(0.941176, 0.941176, 0.941176, 1)
+shader_parameter/particles_anim_h_frames = 5
+shader_parameter/particles_anim_v_frames = 5
+shader_parameter/particles_anim_loop = false
+shader_parameter/smoothing = true
+shader_parameter/flow_strength = 0.015
+shader_parameter/texture_albedo = ExtResource("2_4up7w")
+shader_parameter/texture_flow = SubResource("CompressedTexture2D_itmuc")

entities/weapons/grenade_launcher/assets/resources/explosion_shader.tres

@@ -0,0 +1,58 @@
+[gd_resource type="Shader" format=3 uid="uid://d2aeepgs6xnsg"]
+
+[resource]
+code = "shader_type spatial;
+render_mode unshaded;
+
+// @TODO: add support for `Keep scale` billboard option so that we can spawn 
+// different scale using a curve in the particles process material
+
+uniform vec4 albedo : source_color;
+uniform sampler2D texture_albedo : source_color,filter_linear_mipmap,repeat_disable;
+uniform sampler2D texture_flow : hint_normal,filter_linear_mipmap,repeat_disable;
+uniform int particles_anim_h_frames;
+uniform int particles_anim_v_frames;
+uniform bool particles_anim_loop;
+uniform bool smoothing = false;
+uniform float flow_strength = 0.015;
+
+varying vec2 next_UV;
+varying float timer;
+
+void vertex() {
+	mat4 mat_world = mat4(normalize(INV_VIEW_MATRIX[0]), normalize(INV_VIEW_MATRIX[1]) ,normalize(INV_VIEW_MATRIX[2]), MODEL_MATRIX[3]);
+	mat_world = mat_world * mat4(vec4(cos(INSTANCE_CUSTOM.x), -sin(INSTANCE_CUSTOM.x), 0.0, 0.0), vec4(sin(INSTANCE_CUSTOM.x), cos(INSTANCE_CUSTOM.x), 0.0, 0.0), vec4(0.0, 0.0, 1.0, 0.0), vec4(0.0, 0.0, 0.0, 1.0));
+	MODELVIEW_MATRIX = VIEW_MATRIX * mat_world;
+	MODELVIEW_NORMAL_MATRIX = mat3(MODELVIEW_MATRIX);
+	float h_frames = float(particles_anim_h_frames);
+	float v_frames = float(particles_anim_v_frames);
+	float particle_total_frames = float(particles_anim_h_frames * particles_anim_v_frames);
+	float particle_frame = floor(INSTANCE_CUSTOM.z * float(particle_total_frames));
+	if (!particles_anim_loop) {
+		particle_frame = clamp(particle_frame, 0.0, particle_total_frames - 1.0);
+	} else {
+		particle_frame = mod(particle_frame, particle_total_frames);
+	}
+	UV /= vec2(h_frames, v_frames);
+	next_UV = UV;
+	UV += vec2(mod(particle_frame, h_frames) / h_frames, floor((particle_frame + 0.5) / h_frames) / v_frames);
+	next_UV += vec2(mod(particle_frame + 1.0, h_frames) / h_frames, floor((particle_frame + 1.0 + 0.5) / h_frames) / v_frames);
+	timer = fract(INSTANCE_CUSTOM.y * h_frames * v_frames);
+}
+
+void fragment() {
+	vec4 albedo_tex;
+	if (smoothing) {
+		vec2 flow_tex = texture(texture_flow, UV).rg;
+		flow_tex -= 0.5;
+		flow_tex *= 2.0;
+		vec2 flow_uv = UV + flow_tex * timer * -flow_strength;
+		vec2 reverse_flow_uv = next_UV + flow_tex * (1.0 - timer) * flow_strength;
+		albedo_tex = mix(texture(texture_albedo, flow_uv), texture(texture_albedo, reverse_flow_uv), timer);
+	} else {
+		albedo_tex = texture(texture_albedo, UV);
+	}
+	albedo_tex *= COLOR;
+	ALBEDO = albedo.rgb * albedo_tex.rgb;
+	ALPHA *= albedo.a * albedo_tex.a;
+}"

entities/weapons/grenade_launcher/assets/resources/explosion_texture_albedo.tres

@@ -0,0 +1,4 @@
+[gd_resource type="CompressedTexture2D" format=3 uid="uid://b0003clv8jv3n"]
+
+[resource]
+load_path = "res://.godot/imported/explosion_texture_alb.png-1ff7964ed65c51040c0956ec9ef6a893.s3tc.ctex"

entities/weapons/grenade_launcher/assets/resources/explosion_texture_flowmap.tres

@@ -0,0 +1,4 @@
+[gd_resource type="CompressedTexture2D" format=3 uid="uid://ddlahr6k2hg5g"]
+
+[resource]
+load_path = "res://.godot/imported/explosion_texture_flowmap.png-3137b307308713f172b3be796ef584b9.s3tc.ctex"

entities/weapons/grenade_launcher/assets/resources/material_flare.tres

@@ -10,4 +10,3 @@ shading_mode = 0
 vertex_color_use_as_albedo = true
 albedo_color = Color(0.860369, 0.860369, 0.860369, 1)
 albedo_texture = SubResource("CompressedTexture2D_uiuwk")
-billboard_keep_scale = true

entities/weapons/grenade_launcher/assets/resources/particle_process_material_fire.tres

@@ -1,27 +0,0 @@
-[gd_resource type="ParticleProcessMaterial" load_steps=5 format=3 uid="uid://c78xg30ynapmt"]
-
-[sub_resource type="Gradient" id="Gradient_q75yo"]
-offsets = PackedFloat32Array(0.00806452, 1)
-colors = PackedColorArray(1, 1, 1, 0, 1, 1, 1, 0)
-
-[sub_resource type="GradientTexture1D" id="GradientTexture1D_gt2l8"]
-gradient = SubResource("Gradient_q75yo")
-
-[sub_resource type="Curve" id="Curve_jt11q"]
-_data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(0.980263, 0), 0.0, 0.0, 0, 0]
-point_count = 2
-
-[sub_resource type="CurveTexture" id="CurveTexture_nb67t"]
-curve = SubResource("Curve_jt11q")
-
-[resource]
-lifetime_randomness = 1.0
-emission_shape = 1
-emission_sphere_radius = 0.3
-spread = 180.0
-gravity = Vector3(0, -2, 0)
-scale_min = 0.75
-scale_max = 1.5
-scale_curve = SubResource("CurveTexture_nb67t")
-color = Color(5, 2, 1, 1)
-color_ramp = SubResource("GradientTexture1D_gt2l8")

entities/weapons/grenade_launcher/assets/resources/particle_process_material_sparks.tres

@@ -9,23 +9,28 @@ max_value = 5.0
 _data = [Vector2(0, 5), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
 point_count = 2
 
-[sub_resource type="Curve" id="Curve_1s1qr"]
+[sub_resource type="Curve" id="Curve_26exw"]
 _data = [Vector2(0, 1), 0.0, 0.0, 0, 0, Vector2(1, 1), 0.0, 0.0, 0, 0]
 point_count = 2
 
 [sub_resource type="CurveXYZTexture" id="CurveXYZTexture_eoauk"]
 curve_x = SubResource("Curve_ei0ls")
 curve_y = SubResource("Curve_q68ud")
-curve_z = SubResource("Curve_1s1qr")
+curve_z = SubResource("Curve_26exw")
 
 [resource]
 particle_flag_align_y = true
 emission_shape = 1
 emission_sphere_radius = 0.2
-spread = 180.0
-initial_velocity_min = 20.0
+direction = Vector3(0, 1, 0)
+spread = 90.0
+initial_velocity_min = 15.0
 initial_velocity_max = 25.0
-gravity = Vector3(0, -19.6, 0)
+radial_velocity_min = 10.0
+radial_velocity_max = 10.0
+gravity = Vector3(0, 0, 0)
 scale_min = 0.2
 scale_curve = SubResource("CurveXYZTexture_eoauk")
 color = Color(5, 2, 1, 1)
+turbulence_influence_min = 0.01
+turbulence_influence_max = 0.01

entities/weapons/grenade_launcher/assets/resources/projectile_shape.tres

@@ -0,0 +1,4 @@
+[gd_resource type="SphereShape3D" format=3 uid="uid://b8d4jwso2dcdu"]
+
+[resource]
+radius = 0.062

entities/weapons/grenade_launcher/assets/textures/Flare00.png.import

@@ -4,15 +4,16 @@ importer="texture"
 type="CompressedTexture2D"
 uid="uid://chchhrpwmho2c"
 path.s3tc="res://.godot/imported/Flare00.png-75515c1e8df86aba86a9e55bb8ca7901.s3tc.ctex"
+path.etc2="res://.godot/imported/Flare00.png-75515c1e8df86aba86a9e55bb8ca7901.etc2.ctex"
 metadata={
-"imported_formats": ["s3tc_bptc"],
+"imported_formats": ["s3tc_bptc", "etc2_astc"],
 "vram_texture": true
 }
 
 [deps]
 
 source_file="res://entities/weapons/grenade_launcher/assets/textures/Flare00.png"
-dest_files=["res://.godot/imported/Flare00.png-75515c1e8df86aba86a9e55bb8ca7901.s3tc.ctex"]
+dest_files=["res://.godot/imported/Flare00.png-75515c1e8df86aba86a9e55bb8ca7901.s3tc.ctex", "res://.godot/imported/Flare00.png-75515c1e8df86aba86a9e55bb8ca7901.etc2.ctex"]
 
 [params]
 

entities/weapons/grenade_launcher/assets/textures/explosion_texture_alb.png.import

@@ -0,0 +1,36 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dt6c44uknktrg"
+path.s3tc="res://.godot/imported/explosion_texture_alb.png-1ff7964ed65c51040c0956ec9ef6a893.s3tc.ctex"
+path.etc2="res://.godot/imported/explosion_texture_alb.png-1ff7964ed65c51040c0956ec9ef6a893.etc2.ctex"
+metadata={
+"imported_formats": ["s3tc_bptc", "etc2_astc"],
+"vram_texture": true
+}
+
+[deps]
+
+source_file="res://entities/weapons/grenade_launcher/assets/textures/explosion_texture_alb.png"
+dest_files=["res://.godot/imported/explosion_texture_alb.png-1ff7964ed65c51040c0956ec9ef6a893.s3tc.ctex", "res://.godot/imported/explosion_texture_alb.png-1ff7964ed65c51040c0956ec9ef6a893.etc2.ctex"]
+
+[params]
+
+compress/mode=2
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=true
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=true
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0

entities/weapons/grenade_launcher/assets/textures/explosion_texture_flowmap.png.import

@@ -0,0 +1,36 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://b6pjaen40x34u"
+path.s3tc="res://.godot/imported/explosion_texture_flowmap.png-3137b307308713f172b3be796ef584b9.s3tc.ctex"
+path.etc2="res://.godot/imported/explosion_texture_flowmap.png-3137b307308713f172b3be796ef584b9.etc2.ctex"
+metadata={
+"imported_formats": ["s3tc_bptc", "etc2_astc"],
+"vram_texture": true
+}
+
+[deps]
+
+source_file="res://entities/weapons/grenade_launcher/assets/textures/explosion_texture_flowmap.png"
+dest_files=["res://.godot/imported/explosion_texture_flowmap.png-3137b307308713f172b3be796ef584b9.s3tc.ctex", "res://.godot/imported/explosion_texture_flowmap.png-3137b307308713f172b3be796ef584b9.etc2.ctex"]
+
+[params]
+
+compress/mode=2
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=1
+compress/channel_pack=0
+mipmaps/generate=true
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=0

entities/weapons/grenade_launcher/explosion.gd

@@ -1,13 +1,29 @@
+# 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 GrenadeLauncherProjectileExplosion extends Node3D
 
 ## The component responsible for explosion damages
-@export var explosive_damage : ExplosiveDamageComponent
+@export var explosive_damage : ExplosiveDamage
 
-## The component responsible for owner identification
-var shooter : MatchParticipant:
-	set(value):
-		shooter = value
-		explosive_damage.damage_dealer = value
+## The source of explosion.
+var source: Node:
+	set = set_source
+
+func set_source(new_source: Node) -> void:
+	source = new_source
+	explosive_damage.source = new_source
 
 ## This is increment by 1 when a particle emitter is finished
 var _finished_count : int = 0
@@ -25,14 +41,3 @@ func _on_finished() -> void:
 	if _finished_count == $Particles.get_child_count():
 		queue_free()
 
-## This method is a static factory constructor for the 
-## [GrenadeLauncherProjectileExplosion] scene of the [GrenadeLauncherProjectile].
-static func new_explosion(
-	origin : Vector3,
-	_shooter : MatchParticipant,
-	scene : PackedScene
-) -> GrenadeLauncherProjectileExplosion:
-	var explosion : GrenadeLauncherProjectileExplosion = scene.instantiate()
-	explosion.position = origin
-	explosion.shooter = _shooter
-	return explosion

entities/weapons/grenade_launcher/explosion.tscn

@@ -1,11 +1,37 @@
-[gd_scene load_steps=9 format=3 uid="uid://bb43ae1f5j8lw"]
+[gd_scene load_steps=13 format=3 uid="uid://bb43ae1f5j8lw"]
 
 [ext_resource type="Script" path="res://entities/weapons/grenade_launcher/explosion.gd" id="1_xb4jo"]
-[ext_resource type="PackedScene" uid="uid://qb5sf7awdeui" path="res://entities/components/explosive_damage/explosive_damage.tscn" id="2_rq8du"]
+[ext_resource type="Script" path="res://entities/projectiles/damages/explosive_damage.gd" id="2_r5wb7"]
 [ext_resource type="Material" uid="uid://v7s5w3uw4hmb" path="res://entities/weapons/grenade_launcher/assets/resources/particle_process_material_sparks.tres" id="3_4u6ue"]
+[ext_resource type="Material" uid="uid://c80t026c2gpxx" path="res://entities/weapons/grenade_launcher/assets/resources/explosion_material.tres" id="3_tsixm"]
 [ext_resource type="Material" uid="uid://bbqjhgs44rnss" path="res://entities/weapons/grenade_launcher/assets/resources/material_flare.tres" id="4_634rq"]
 [ext_resource type="Material" uid="uid://cykwajkj5aaqx" path="res://entities/weapons/grenade_launcher/assets/resources/particle_process_material_flash.tres" id="5_mntrp"]
-[ext_resource type="Material" uid="uid://c78xg30ynapmt" path="res://entities/weapons/grenade_launcher/assets/resources/particle_process_material_fire.tres" id="6_s25g3"]
+
+[sub_resource type="Curve" id="Curve_m5722"]
+_data = [Vector2(0.247387, 1), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_1htx7"]
+radius = 10.6
+
+[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_dlm7y"]
+emission_shape_offset = Vector3(0, 0.25, 0)
+angle_min = -20.0
+angle_max = 20.0
+direction = Vector3(0, 1, 0)
+initial_velocity_min = 2.0
+initial_velocity_max = 2.0
+gravity = Vector3(0, 0, 0)
+damping_min = 1.0
+damping_max = 1.0
+color = Color(1.5, 1.5, 1.5, 1)
+hue_variation_max = 0.05
+anim_speed_min = 1.0
+anim_speed_max = 1.0
+
+[sub_resource type="QuadMesh" id="QuadMesh_35tvq"]
+material = ExtResource("3_tsixm")
+size = Vector2(5, 5)
 
 [sub_resource type="QuadMesh" id="QuadMesh_wt5ts"]
 material = ExtResource("4_634rq")
@@ -17,18 +43,39 @@ material = ExtResource("4_634rq")
 script = ExtResource("1_xb4jo")
 explosive_damage = NodePath("ExplosiveDamage")
 
-[node name="ExplosiveDamage" parent="." instance=ExtResource("2_rq8du")]
+[node name="ExplosiveDamage" type="Area3D" parent="."]
+collision_mask = 13
+script = ExtResource("2_r5wb7")
+damage = 128
+blast_force = 2000
+falloff = SubResource("Curve_m5722")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="ExplosiveDamage"]
+shape = SubResource("SphereShape3D_1htx7")
 
 [node name="Particles" type="Node3D" parent="."]
 
+[node name="Explosion" type="GPUParticles3D" parent="Particles"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0)
+emitting = false
+amount = 1
+lifetime = 2.0
+one_shot = true
+speed_scale = 3.0
+fixed_fps = 60
+draw_order = 3
+process_material = SubResource("ParticleProcessMaterial_dlm7y")
+draw_pass_1 = SubResource("QuadMesh_35tvq")
+
 [node name="Sparks" type="GPUParticles3D" parent="Particles"]
+process_priority = 1
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.00311279, 0.0152655, -0.000196457)
 emitting = false
-amount = 20
+amount = 12
 lifetime = 0.3
 one_shot = true
 explosiveness = 1.0
-fixed_fps = 60
+randomness = 0.3
 process_material = ExtResource("3_4u6ue")
 draw_pass_1 = SubResource("QuadMesh_wt5ts")
 
@@ -41,16 +88,3 @@ explosiveness = 1.0
 fixed_fps = 60
 process_material = ExtResource("5_mntrp")
 draw_pass_1 = SubResource("QuadMesh_mv2qw")
-
-[node name="Fire" type="GPUParticles3D" parent="Particles"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, -0.00311279, 0.0152655, -0.000196457)
-emitting = false
-amount = 13
-lifetime = 0.55
-one_shot = true
-explosiveness = 1.0
-fixed_fps = 60
-process_material = ExtResource("6_s25g3")
-draw_pass_1 = SubResource("QuadMesh_wt5ts")
-
-[editable path="ExplosiveDamage"]

entities/weapons/grenade_launcher/grenade_launcher.gd

@@ -1,29 +1,39 @@
-class_name GrenadeLauncher extends Node3D
+# 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 GrenadeLauncher extends Weapon
 
-@export_range(0, 24) var ammo : int = 24
-@export var fire_rate : float = 1. # seconds
-@export var reload_time : float = 1. # seconds
-
-@export_category("Animations")
+@export var _PROJECTILE : PackedScene
+## The factor of velocity from the owner of this [Weapon] inherited by this [Projectile].
+@export_range(0., 1., .01) var inheritance : float = 1.
 @export var anim_player : AnimationPlayer
 
-# Called when the node enters the scene tree for the first time.
-func _ready() -> void:
-	pass # Replace with function body.
-
-func trigger() -> void:
+func _on_triggered() -> void:
 	# play the fire animation
 	anim_player.play("fire")
 	# init projectile
-	var projectile : Node3D = $ProjectileSpawner.new_projectile(
-		GrenadeLauncherProjectile,
-		owner.linear_velocity,
-		owner.match_participant
-	)
-	# add to owner of player for now
-	Global.type.add_child(projectile)
+	var projectile : GrenadeLauncherProjectile = _PROJECTILE.instantiate()
+	var direction: Vector3 = $Nozzle.global_basis.z.normalized()
+	projectile.velocity = direction * projectile.speed + owner.linear_velocity * inheritance
+	projectile.source = owner
+	owner.add_child(projectile)
+	projectile.global_position = $Nozzle.global_position
+	projectile.global_basis = $Nozzle.global_basis
+	projectile.shape_cast.add_exception(owner)
 
 func _on_visibility_changed() -> void:
 	if self.visible:
-		anim_player.play("equip")
+		#anim_player.play("equip")
 		#self.sounds.play("equip")
+		pass

entities/weapons/grenade_launcher/grenade_launcher.tscn

@@ -1,19 +1,17 @@
-[gd_scene load_steps=5 format=3 uid="uid://cstl7yxc75572"]
+[gd_scene load_steps=4 format=3 uid="uid://cstl7yxc75572"]
 
 [ext_resource type="PackedScene" uid="uid://bbp260t2qivxk" path="res://entities/weapons/grenade_launcher/assets/models/grenade_launcher.glb" id="1_keuur"]
 [ext_resource type="Script" path="res://entities/weapons/grenade_launcher/grenade_launcher.gd" id="2_38xn3"]
 [ext_resource type="PackedScene" uid="uid://dak767xehqa6x" path="res://entities/weapons/grenade_launcher/projectile.tscn" id="3_rg5nk"]
-[ext_resource type="Script" path="res://entities/components/projectile_spawner.gd" id="4_5h5sw"]
 
 [node name="GrenadeLauncher" node_paths=PackedStringArray("anim_player") instance=ExtResource("1_keuur")]
 script = ExtResource("2_38xn3")
+_PROJECTILE = ExtResource("3_rg5nk")
+inheritance = 0.8
 anim_player = NodePath("AnimationPlayer")
-
-[node name="ProjectileSpawner" type="Node3D" parent="." index="0"]
-transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.266945)
-script = ExtResource("4_5h5sw")
-PROJECTILE = ExtResource("3_rg5nk")
-inheritance = 0.75
+ammo = 12
+max_ammo = 12
+ammo_usage = 1
 
 [node name="barrel" parent="Armature/Skeleton3D" index="0"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.19209e-07, 0)
@@ -24,4 +22,8 @@ transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, -0.082471, -0.0653242)
 [node name="main" parent="Armature/Skeleton3D" index="2"]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.19209e-07, 0)
 
+[node name="Nozzle" type="Marker3D" parent="." index="2"]
+transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.259886)
+
+[connection signal="triggered" from="." to="." method="_on_triggered"]
 [connection signal="visibility_changed" from="." to="." method="_on_visibility_changed"]

entities/weapons/grenade_launcher/projectile.gd

@@ -12,46 +12,48 @@
 #
 # 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 GrenadeLauncherProjectile extends RigidBody3D
+class_name GrenadeLauncherProjectile extends ArcProjectile
 
-@export_category("Parameters")
-@export var EXPLOSION : PackedScene
-@export var collider : CollisionShape3D
-@export var speed : float = 44. # m/s
-@export var lifespan : float = 1.6 # in seconds
+## The time before 
+@export var fuse_time : float = 1.
+@export_range(0., 1.) var bounce_velocity_modifier: float = .24
 
-var shooter : MatchParticipant
-var pending_explosion : bool = false
+var fuse_timer := Timer.new()
 
-## Called when the node enters the scene tree for the first time.
 func _ready() -> void:
-	$Timer.wait_time = lifespan
-	$Timer.start()
+	fuse_timer.wait_time = fuse_time
+	fuse_timer.one_shot = true
+	fuse_timer.autostart = true
+	add_child(fuse_timer)
+	# remove exceptions after a short time so that it can collide again with owner
+	get_tree().create_timer(.3).timeout.connect(func() -> void: 
+		shape_cast.clear_exceptions())
 
-## This method enable collision signals to be emitted when the lifespan timer 
-## is finished.
-func _on_timer_timeout() -> void:
-	max_contacts_reported = 1
-	set_contact_monitor(true)
+func _physics_process(delta : float) -> void:
+	if not shape_cast: set_physics_process(false)
+	velocity += _gravity * delta
+	shape_cast.target_position = to_local(global_position + velocity * delta)
+	shape_cast.force_shapecast_update()
+	if shape_cast.is_colliding():
+		var collider: Node = shape_cast.get_collider(0)
+		var hit_point: Vector3 = shape_cast.get_collision_point(0)
+		# explode on player hit or when fuse timer is exhausted
+		if collider is Player or fuse_timer.is_stopped():
+			destroy(hit_point)
+			return
+		# bounce projectile
+		var hit_normal : Vector3 = shape_cast.get_collision_normal(0)
+		velocity = calc_bounce_velocity(velocity, hit_normal.normalized())
+		global_position = hit_point + hit_normal.normalized() * shape_cast.shape.radius
+		global_position += velocity * delta
+	else:
+		# move projectile
+		global_position += velocity * delta
 
-## This method is responsible for spawning the projectile explosion and freeing
-## it when a collision is detected once the lifespan timer is finished.
-func _on_body_entered(_body : Node) -> void:
-	var explosion : GrenadeLauncherProjectileExplosion = \
-		GrenadeLauncherProjectileExplosion.new_explosion(position, shooter, EXPLOSION)
-	add_sibling(explosion)
-	queue_free()
+## This method computes projectile bounce velocity.
+func calc_bounce_velocity(_velocity: Vector3, hit_normal: Vector3) -> Vector3:
+	return mirror_vector_by_normal(_velocity, hit_normal.normalized()) * bounce_velocity_modifier
 
-## This method is a static factory constructor for the [GrenadeLauncherProjectile] 
-## scene of the [GrenadeLauncher].
-static func new_projectile(
-	origin : Node3D, 
-	inherited_velocity : Vector3,
-	_shooter : MatchParticipant,
-	scene : PackedScene
-) -> GrenadeLauncherProjectile:
-	var projectile : GrenadeLauncherProjectile = scene.instantiate()
-	projectile.shooter = _shooter
-	projectile.transform = origin.global_transform
-	projectile.linear_velocity = origin.global_basis.z.normalized() * projectile.speed + inherited_velocity
-	return projectile
+## This method computes reflected vector using the formula: R = V - 2 * (V dot N) * N
+func mirror_vector_by_normal(_velocity: Vector3, hit_normal_unit_vector: Vector3) -> Vector3:
+	return _velocity - 2 * _velocity.dot(hit_normal_unit_vector) * hit_normal_unit_vector

entities/weapons/grenade_launcher/projectile.tscn

@@ -1,46 +1,30 @@
-[gd_scene load_steps=7 format=3 uid="uid://dak767xehqa6x"]
+[gd_scene load_steps=5 format=3 uid="uid://dak767xehqa6x"]
 
 [ext_resource type="Script" path="res://entities/weapons/grenade_launcher/projectile.gd" id="1_i8v2u"]
 [ext_resource type="PackedScene" uid="uid://bb43ae1f5j8lw" path="res://entities/weapons/grenade_launcher/explosion.tscn" id="2_cxty7"]
-[ext_resource type="Script" path="res://addons/smoothing/smoothing.gd" id="3_wyge0"]
-
-[sub_resource type="PhysicsMaterial" id="PhysicsMaterial_r263x"]
-rough = true
-bounce = 0.5
-
-[sub_resource type="SphereShape3D" id="SphereShape3D_kipwv"]
-radius = 0.062
+[ext_resource type="Shape3D" uid="uid://b8d4jwso2dcdu" path="res://entities/weapons/grenade_launcher/assets/resources/projectile_shape.tres" id="3_fxdq6"]
 
 [sub_resource type="StandardMaterial3D" id="StandardMaterial3D_miu4v"]
 albedo_color = Color(0.2, 0.2, 0.2, 1)
 
-[node name="GrenadeLauncherProjectile" type="RigidBody3D" node_paths=PackedStringArray("collider")]
-collision_layer = 2147483648
-collision_mask = 2147483648
-mass = 5.0
-physics_material_override = SubResource("PhysicsMaterial_r263x")
-continuous_cd = true
+[node name="GrenadeLauncherProjectile" type="Node3D"]
 script = ExtResource("1_i8v2u")
 EXPLOSION = ExtResource("2_cxty7")
-collider = NodePath("CollisionShape3D")
+speed = 54.0
 
-[node name="CollisionShape3D" type="CollisionShape3D" parent="."]
-shape = SubResource("SphereShape3D_kipwv")
+[node name="ShapeCast3D" type="ShapeCast3D" parent="."]
+shape = ExtResource("3_fxdq6")
+target_position = Vector3(0, 0, 0)
+collision_mask = 2147483649
 
-[node name="Timer" type="Timer" parent="."]
-one_shot = true
-
-[node name="Smoothing" type="Node3D" parent="."]
+[node name="Head" type="CSGSphere3D" parent="."]
 transform = Transform3D(1, 0, 0, 0, 1, 0, 0, 0, 1, 0.000792712, 0, -0.000432983)
-script = ExtResource("3_wyge0")
-flags = 3
-
-[node name="Mesh" type="CSGSphere3D" parent="Smoothing"]
 radius = 0.062
 radial_segments = 24
 rings = 12
 material = SubResource("StandardMaterial3D_miu4v")
 
-[connection signal="body_entered" from="." to="." method="_on_body_entered"]
-[connection signal="body_shape_entered" from="." to="." method="_on_body_shape_entered"]
-[connection signal="timeout" from="Timer" to="." method="_on_timer_timeout"]
+[node name="Body" type="CSGCylinder3D" parent="."]
+transform = Transform3D(0.125, 0, -2.64698e-23, 2.64698e-23, -2.71011e-09, 0.125, 0, -0.062, -5.46392e-09, 0, 0, -0.062)
+sides = 12
+material = SubResource("StandardMaterial3D_miu4v")

entities/weapons/space_gun/explosion.gd

@@ -0,0 +1,33 @@
+# 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 SpaceGunProjectileExplosion extends Node3D
+
+@export var explosive_damage : ExplosiveDamage
+
+var source: Node:
+	set = set_source
+
+func set_source(new_source: Node) -> void:
+	source = new_source
+	explosive_damage.source = new_source
+
+@onready var particles : GPUParticles3D = $Fire
+
+func _ready() -> void:
+	top_level = true
+	particles.emitting = true
+	particles.finished.connect(func() -> void: queue_free())
+	if source:
+		explosive_damage.source = source

entities/weapons/space_gun/explosion.tscn

@@ -0,0 +1,68 @@
+[gd_scene load_steps=12 format=3 uid="uid://00uv1dfxlv47"]
+
+[ext_resource type="Script" path="res://entities/weapons/space_gun/explosion.gd" id="1_3xpsk"]
+[ext_resource type="Script" path="res://entities/projectiles/damages/explosive_damage.gd" id="2_beh8d"]
+
+[sub_resource type="Curve" id="Curve_l54ao"]
+_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_l54ao")
+
+[sub_resource type="Curve" id="Curve_21akj"]
+_data = [Vector2(0, 0), 0.0, 0.0, 0, 0, Vector2(1, 1), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="CurveTexture" id="CurveTexture_b4xy8"]
+curve = SubResource("Curve_21akj")
+
+[sub_resource type="ParticleProcessMaterial" id="ParticleProcessMaterial_i271t"]
+direction = Vector3(0, 1, 0)
+spread = 180.0
+initial_velocity_min = 24.0
+initial_velocity_max = 24.0
+scale_curve = SubResource("CurveTexture_08dbu")
+turbulence_enabled = true
+turbulence_influence_over_life = SubResource("CurveTexture_b4xy8")
+
+[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_k7x87"]
+material = SubResource("StandardMaterial3D_wpu51")
+
+[sub_resource type="Curve" id="Curve_ck840"]
+_data = [Vector2(0.254355, 1), 0.0, 0.0, 0, 0, Vector2(1, 0), 0.0, 0.0, 0, 0]
+point_count = 2
+
+[sub_resource type="SphereShape3D" id="SphereShape3D_s611t"]
+radius = 7.2
+
+[node name="SpaceGunProjectileExplosion" type="Node3D" node_paths=PackedStringArray("explosive_damage")]
+top_level = true
+script = ExtResource("1_3xpsk")
+explosive_damage = NodePath("ExplosiveDamage")
+
+[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_i271t")
+draw_pass_1 = SubResource("SphereMesh_k7x87")
+
+[node name="ExplosiveDamage" type="Area3D" parent="."]
+collision_layer = 0
+collision_mask = 13
+script = ExtResource("2_beh8d")
+damage = 102
+falloff = SubResource("Curve_ck840")
+
+[node name="CollisionShape3D" type="CollisionShape3D" parent="ExplosiveDamage"]
+shape = SubResource("SphereShape3D_s611t")

entities/weapons/space_gun/projectile.gd

@@ -12,63 +12,5 @@
 #
 # 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 SpaceGunProjectile 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
-@export var _time_to_trail_enable : float = 0.05 # in seconds
-
-@onready var shape_cast : ShapeCast3D = $ShapeCast3D
-@onready var game : Node3D = get_tree().get_current_scene()
-@onready var projectile_trail : Trail3D = $Smoothing/ProjectileTrail
-
-var velocity : Vector3 = Vector3.ZERO
-var shooter : MatchParticipant
-
-func _ready() -> void:
-	var lifespan_timer : 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)
-	projectile_trail._trail_enabled = false
-	var trail_enable_timer : Timer = Timer.new()
-	trail_enable_timer.wait_time = _time_to_trail_enable
-	trail_enable_timer.one_shot = true
-	trail_enable_timer.autostart = true
-	trail_enable_timer.timeout.connect(_enable_trail)
-	add_child(trail_enable_timer)
-
-func self_destruct() -> void:
-	explode(position)
-	
-func explode(spawn_position : Vector3) -> void:
-	game.add_child(SpaceGunProjectileExplosion.new_explosion(spawn_position, shooter, EXPLOSION))
-	queue_free()
-
-func _physics_process(delta : float) -> void:
-	var previous_position : Vector3 = global_position
-	global_position += velocity * delta
-	shape_cast.target_position = to_local(previous_position)
-	if shape_cast.is_colliding():
-		var contact_point : Vector3 = shape_cast.collision_result[0].point
-		explode(contact_point)
-
-## This method is a parameterized constructor for the [SpaceGunProjectile] scene of the [SpaceGun]
-static func new_projectile(
-	origin : Marker3D,
-	inherited_velocity : Vector3,
-	_shooter : MatchParticipant,
-	scene : PackedScene
-) -> SpaceGunProjectile:
-	var projectile : SpaceGunProjectile = scene.instantiate()
-	projectile.shooter = _shooter
-	projectile.transform = origin.global_transform
-	projectile.velocity = origin.global_basis.z.normalized() * projectile.speed + inherited_velocity
-	return projectile
-
-func _enable_trail() -> void:
-	projectile_trail._trail_enabled = true
+## This class defines the projectile of a [SpaceGun].
+class_name SpaceGunProjectile extends ExplosiveProjectile

entities/weapons/space_gun/projectile.tscn

@@ -1,53 +1,47 @@
-[gd_scene load_steps=8 format=3 uid="uid://dn1tcakam5egs"]
+[gd_scene load_steps=7 format=3 uid="uid://61mogxsei3rq"]
 
-[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile.gd" id="1_4j1dp"]
-[ext_resource type="PackedScene" path="res://entities/weapons/space_gun/projectile_explosion.tscn" id="2_llml6"]
-[ext_resource type="Script" path="res://addons/smoothing/smoothing.gd" id="3_dmi64"]
-[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile_trail.gd" id="3_ygqbh"]
-
-[sub_resource type="SphereShape3D" id="SphereShape3D_umtte"]
-radius = 0.15
+[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile.gd" id="2_n6e2j"]
+[ext_resource type="PackedScene" uid="uid://00uv1dfxlv47" path="res://entities/weapons/space_gun/explosion.tscn" id="2_s8tpq"]
+[ext_resource type="Shape3D" uid="uid://dkhoeg2bwfbga" path="res://entities/weapons/space_gun/projectile_shape.tres" id="3_j3hyk"]
+[ext_resource type="Script" path="res://entities/weapons/space_gun/projectile_trail.gd" id="4_ojig2"]
 
 [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="StandardMaterial3D" id="StandardMaterial3D_4a265"]
+[sub_resource type="StandardMaterial3D" id="StandardMaterial3D_wqkw2"]
 transparency = 1
 blend_mode = 1
 cull_mode = 2
 shading_mode = 0
 vertex_color_use_as_albedo = true
 
-[node name="Projectile" type="Node3D"]
-script = ExtResource("1_4j1dp")
-EXPLOSION = ExtResource("2_llml6")
+[node name="SpaceGunProjectile" type="Node3D"]
+top_level = true
+script = ExtResource("2_n6e2j")
+EXPLOSION = ExtResource("2_s8tpq")
+speed = 78.4
+lifespan = 6.0
 
 [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")
+shape = ExtResource("3_j3hyk")
 target_position = Vector3(0, 0, 0)
-margin = 0.1
-max_results = 1
 collision_mask = 2147483649
+collide_with_areas = true
 debug_shape_custom_color = Color(1, 0, 0, 1)
 
-[node name="Smoothing" type="Node3D" parent="."]
-script = ExtResource("3_dmi64")
-target = NodePath("..")
-
-[node name="Mesh" type="CSGSphere3D" parent="Smoothing"]
+[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="ProjectileTrail" type="MeshInstance3D" parent="Smoothing"]
-material_override = SubResource("StandardMaterial3D_4a265")
-skeleton = NodePath("../..")
-script = ExtResource("3_ygqbh")
+[node name="ProjectileTrail" type="MeshInstance3D" parent="."]
+material_override = SubResource("StandardMaterial3D_wqkw2")
+script = ExtResource("4_ojig2")
 _start_width = 0.15
 _lifespan = 0.25
 _start_color = Color(0, 0.498039, 0.854902, 1)

entities/weapons/space_gun/projectile_explosion.gd

@@ -1,38 +0,0 @@
-# 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 SpaceGunProjectileExplosion extends Node3D
-
-@export var explosive_damage : ExplosiveDamageComponent
-
-@onready var fire : GPUParticles3D = $Fire
-
-var explosion_effect_pending : bool = false
-
-var shooter : MatchParticipant:
-	set(value):
-		shooter = value
-		assert(explosive_damage)
-		explosive_damage.damage_dealer = value
-
-func _ready() -> void:
-	fire.emitting = true
-	fire.finished.connect(func() -> void: queue_free())
-
-## This method is a parameterized constructor for the [SpaceGunProjectileExplosion] scene of the [SpaceGunProjectile]
-static func new_explosion(spawn_position : Vector3, _shooter : MatchParticipant, scene : PackedScene) -> SpaceGunProjectileExplosion:
-	var explosion : SpaceGunProjectileExplosion = scene.instantiate()
-	explosion.shooter = _shooter
-	explosion.position = spawn_position
-	return explosion

entities/weapons/space_gun/projectile_explosion.tscn

@@ -1,44 +0,0 @@
-[gd_scene load_steps=8 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://qb5sf7awdeui" path="res://entities/components/explosive_damage/explosive_damage.tscn" id="2_js0ht"]
-
-[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")
-
-[node name="ProjectileExplosion" type="Node3D" node_paths=PackedStringArray("explosive_damage")]
-script = ExtResource("1_fp5td")
-explosive_damage = NodePath("ExplosiveDamage")
-
-[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="ExplosiveDamage" parent="." instance=ExtResource("2_js0ht")]
-
-[editable path="ExplosiveDamage"]

entities/weapons/space_gun/projectile_shape.tres

@@ -0,0 +1,4 @@
+[gd_resource type="SphereShape3D" format=3 uid="uid://dkhoeg2bwfbga"]
+
+[resource]
+radius = 0.15

entities/weapons/space_gun/space_gun.gd

@@ -12,40 +12,26 @@
 #
 # 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 SpaceGun extends Node3D
+## This class defines a SpaceGun.
+class_name SpaceGun extends Weapon
 
-@export var fire_rate : float = 1. # seconds
-@export var reload_time : float = 1. # seconds
+@export var _PROJECTILE : PackedScene
+## The factor of velocity from the owner of this [Weapon] inherited by this [Projectile].
+@export_range(0., 1., .01) var inheritance : float = 1.
 @export var anim_player : AnimationPlayer
 
-enum WeaponState { WEAPON_READY, WEAPON_RELOADING }
-var state : WeaponState = WeaponState.WEAPON_READY
-
-func can_fire() -> bool:
-	return state == WeaponState.WEAPON_READY
-
-func trigger() -> void:
-	# check permission
-	if not can_fire():
-		return
+func _on_triggered() -> void:
 	# play the fire animation
 	anim_player.play("fire")
-	var projectile : Node3D = $ProjectileSpawner.new_projectile(
-		SpaceGunProjectile,
-		owner.linear_velocity,
-		owner.match_participant
-	)
-	# add to owner of player for now
-	Global.type.add_child(projectile)
-	# ensure projectile does not collide with owner
-	var collider : ShapeCast3D = projectile.shape_cast
-	collider.add_exception(owner)
-	# update states
-	state = WeaponState.WEAPON_RELOADING
-	await get_tree().create_timer(reload_time).timeout
-	state = WeaponState.WEAPON_READY
+	var projectile : SpaceGunProjectile = _PROJECTILE.instantiate()
+	projectile.velocity = projectile.speed * $Nozzle.global_basis.z.normalized() + owner.linear_velocity * inheritance
+	projectile.source = owner
+	owner.add_child(projectile)
+	projectile.global_transform = $Nozzle.global_transform
+	projectile.shape_cast.add_exception(owner)
 
 func _on_visibility_changed() -> void:
 	if self.visible:
-		anim_player.play("equip")
-		#self.sounds.play("equip")
+		#anim_player.play("equip")
+		#sounds.play("equip")
+		pass

entities/weapons/weapon.gd

@@ -0,0 +1,64 @@
+# 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/>.
+## This class defines a [Weapon].
+class_name Weapon extends Node3D
+
+## Emitted after [member Weapon.trigger] is called.
+signal triggered
+
+## Emitted when [member ammo] is changed (useful for [HUD] display).
+signal ammo_changed(new_ammo: int)
+
+# enum WeaponState { EQUIPPED, UNEQUIPPED }
+
+## The ammunition count.
+@export_range(0, 9223372036854775295) var ammo: int:
+	set = set_ammo
+
+@rpc("authority", "call_local", "reliable")
+func set_ammo(new_ammo: int) -> void:
+	ammo = new_ammo
+	ammo_changed.emit(new_ammo)
+
+## The maxmimum ammunition count.
+@export_range(0, 9223372036854775295) var max_ammo: int
+## The number of ammo used when [member triggered] is emitted.
+@export_range(0, 9223372036854775295) var ammo_usage: int
+## The cooldown until this [Weapon] can be triggered again.
+@export var cooldown: float = 1.
+
+## The internal timer to handle trigger cooldown
+var _cooldown_timer: Timer
+
+func _init() -> void:
+	_cooldown_timer = Timer.new()
+	_cooldown_timer.one_shot = true
+	_cooldown_timer.wait_time = cooldown
+	add_child(_cooldown_timer)
+
+## This methods triggers the [Weapon].
+func trigger() -> void:
+	if not _cooldown_timer.is_stopped() or ammo < ammo_usage:
+		return
+	# deduct ammo_usage from ammo count
+	ammo -= ammo_usage
+	# start cooldown timer
+	_cooldown_timer.start(cooldown)
+	# emit triggered signal
+	triggered.emit()
+
+# primary action handler
+func _on_primary(pressed: bool) -> void:
+	if pressed: trigger()