feat: add plasma gun weapon implementation and new pause menu system with loadout management

weapons/dmr.gd

@@ -0,0 +1,112 @@
+extends BaseHitscanWeapon
+class_name DMR
+
+var is_ads: bool = false
+var default_fov: float = 90.0
+var ads_fov: float = 40.0
+
+func _init() -> void:
+	weapon_name = "DMR"
+	fire_rate = 0.3 # Cooldown to prevent autoclicker spam
+	max_ammo = 15
+	reload_time = 2.2
+	base_damage = 75.0
+	min_damage = 60.0
+	falloff_start = 50.0
+	max_range = 300.0
+	automatic = false
+	spread_angle = 0.002 # Extremely accurate
+
+func _ready() -> void:
+	super._ready()
+	if camera:
+		default_fov = camera.fov
+
+func _build_model() -> void:
+	position = Vector3(0.3, -0.3, -0.7)
+	
+	var body_mat = StandardMaterial3D.new()
+	body_mat.albedo_color = Color(0.15, 0.25, 0.15) # Olive drab
+	var black_mat = StandardMaterial3D.new()
+	black_mat.albedo_color = Color(0.05, 0.05, 0.05)
+	
+	# Receiver
+	var receiver = MeshInstance3D.new()
+	var rec_mesh = BoxMesh.new()
+	rec_mesh.size = Vector3(0.05, 0.12, 0.4)
+	rec_mesh.material = body_mat
+	receiver.mesh = rec_mesh
+	receiver.position = Vector3(0, 0, 0.1)
+	model_root.add_child(receiver)
+	
+	# Barrel
+	var barrel = MeshInstance3D.new()
+	var b_mesh = CylinderMesh.new()
+	b_mesh.top_radius = 0.01
+	b_mesh.bottom_radius = 0.01
+	b_mesh.height = 0.6
+	b_mesh.material = black_mat
+	barrel.mesh = b_mesh
+	barrel.rotation.x = deg_to_rad(90)
+	barrel.position = Vector3(0, 0.03, -0.3)
+	model_root.add_child(barrel)
+	
+	# Scope
+	var scope = MeshInstance3D.new()
+	var scope_mesh = CylinderMesh.new()
+	scope_mesh.top_radius = 0.02
+	scope_mesh.bottom_radius = 0.02
+	scope_mesh.height = 0.2
+	scope_mesh.material = black_mat
+	scope.mesh = scope_mesh
+	scope.rotation.x = deg_to_rad(90)
+	scope.position = Vector3(0, 0.08, 0.05)
+	model_root.add_child(scope)
+	
+	# Muzzle Flash
+	muzzle_flash = OmniLight3D.new()
+	muzzle_flash.light_color = Color(1.0, 0.8, 0.4)
+	muzzle_flash.light_energy = 0.0
+	muzzle_flash.omni_range = 6.0
+	muzzle_flash.position = Vector3(0, 0.03, -0.6)
+	model_root.add_child(muzzle_flash)
+	
+	# Audio
+	fire_sound = AudioStreamPlayer3D.new()
+	fire_sound.stream = load("res://assets/sounds/dmr_fire.wav")
+	fire_sound.position = muzzle_flash.position
+	fire_sound.volume_db = -3.0
+	model_root.add_child(fire_sound)
+	
+	reload_sound = AudioStreamPlayer3D.new()
+	reload_sound.stream = load("res://assets/sounds/shotgun_reload.wav")
+	model_root.add_child(reload_sound)
+
+func _process(delta: float) -> void:
+	super._process(delta)
+	
+	if camera:
+		var target_fov = ads_fov if is_ads else default_fov
+		camera.fov = lerpf(camera.fov, target_fov, 15.0 * delta)
+		
+		# Move model to center when ADS
+		var target_pos = Vector3(0.0, -0.2, -0.5) if is_ads else Vector3(0.3, -0.3, -0.7)
+		position = position.lerp(target_pos, 15.0 * delta)
+		
+		# Adjust sensitivity if player has a way to modify it (we can modify the camera rig later)
+		# For now, FOV alone gives the zoom effect.
+
+func _input(event: InputEvent) -> void:
+	super._input(event)
+	
+	if Input.get_mouse_mode() != Input.MOUSE_MODE_CAPTURED:
+		return
+		
+	if event.is_action_pressed("fire_alt"):
+		is_ads = true
+	elif event.is_action_released("fire_alt"):
+		is_ads = false
+
+func _start_reload() -> void:
+	super._start_reload()
+	is_ads = false # Drop out of ADS on reload