fix

project.godot

@@ -60,6 +60,11 @@ change_train={
 "events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":4194306,"key_label":0,"unicode":0,"location":0,"echo":false,"script":null)
 ]
 }
+horn={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":32,"key_label":0,"unicode":32,"location":0,"echo":false,"script":null)
+]
+}
 
 [rendering]
 

resources/train kit/Textures/colormap.png.import

@@ -2,7 +2,7 @@
 
 importer="texture"
 type="CompressedTexture2D"
-uid="uid://cdwwcby54pecs"
+uid="uid://b0ktb1ocwlp1f"
 path.s3tc="res://.godot/imported/colormap.png-d3d02b00fd834f010bf45b2b9259ea63.s3tc.ctex"
 metadata={
 "imported_formats": ["s3tc_bptc"],

resources/train kit/Textures/colormap.png.import~RF15a29b7c.TMP

@@ -0,0 +1,41 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cdwwcby54pecs"
+path.s3tc="res://.godot/imported/colormap.png-d3d02b00fd834f010bf45b2b9259ea63.s3tc.ctex"
+metadata={
+"imported_formats": ["s3tc_bptc"],
+"vram_texture": true
+}
+
+[deps]
+
+source_file="res://resources/train kit/Textures/colormap.png"
+dest_files=["res://.godot/imported/colormap.png-d3d02b00fd834f010bf45b2b9259ea63.s3tc.ctex"]
+
+[params]
+
+compress/mode=2
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+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/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+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

resources/train kit/Textures/colormap.png.import~RF15a29bca.TMP

@@ -0,0 +1,41 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cdwwcby54pecs"
+path.s3tc="res://.godot/imported/colormap.png-d3d02b00fd834f010bf45b2b9259ea63.s3tc.ctex"
+metadata={
+"imported_formats": ["s3tc_bptc"],
+"vram_texture": true
+}
+
+[deps]
+
+source_file="res://resources/train kit/Textures/colormap.png"
+dest_files=["res://.godot/imported/colormap.png-d3d02b00fd834f010bf45b2b9259ea63.s3tc.ctex"]
+
+[params]
+
+compress/mode=2
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+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/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+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

scenes/trainjourney.tscn

@@ -106,7 +106,8 @@ text = "Comandi:
 \"A / D - Ruota camera\",
 \"SPACE - Cambia camera\",
 \"TAB - Cambia treno\",
-\"ESC - Esci\""
+\"ESC - Esci\",
+\"Spazio - Horn\""
 label_settings = SubResource("LabelSettings_tefeu")
 
 [node name="totaldistance_label" type="Label" parent="HUD" unique_id=544099778]

scripts/train.gd

@@ -38,6 +38,7 @@ var distance_traveled: float = 0.0
 var locomotive: Node3D
 var wagons: Array = []
 var wagon_distances: Array = []
+var _horn_player: AudioStreamPlayer
 
 
 func _ready() -> void:
@@ -46,6 +47,7 @@ func _ready() -> void:
 	await get_tree().process_frame
 	_create_train()
 	current_speed = base_speed
+	_create_horn()
 
 
 func _remove_train():
@@ -145,6 +147,9 @@ func _handle_input(delta: float) -> void:
 		_create_train()
 		current_speed = base_speed
 	
+	if Input.is_action_just_pressed("horn"):
+		_play_horn()
+
 func _update_movement(delta: float) -> void:
 	distance_traveled += current_speed * delta
 	
@@ -187,3 +192,54 @@ func get_locomotive_position() -> Vector3:
 
 func get_speed() -> float:
 	return current_speed
+
+
+func _create_horn() -> void:
+	_horn_player = AudioStreamPlayer.new()
+	_horn_player.name = "HornPlayer"
+	_horn_player.volume_db = -6.0
+	_horn_player.bus = &"Master"
+	add_child(_horn_player)
+	
+	var sample_rate := 22050
+	var duration := 1.8
+	var num_samples := int(sample_rate * duration)
+	
+	var audio := AudioStreamWAV.new()
+	audio.format = AudioStreamWAV.FORMAT_16_BITS
+	audio.mix_rate = sample_rate
+	audio.stereo = false
+	
+	var data := PackedByteArray()
+	data.resize(num_samples * 2)
+	
+	var freq1 := 277.0  # C#4
+	var freq2 := 370.0  # F#4
+	var freq3 := 311.0  # Eb4
+	
+	for i in num_samples:
+		var t := float(i) / sample_rate
+		var envelope := 1.0
+		if t < 0.15:
+			envelope = t / 0.15
+		elif t > duration - 0.4:
+			envelope = (duration - t) / 0.4
+		envelope = clampf(envelope, 0.0, 1.0)
+		
+		var sample := sin(t * freq1 * TAU) * 0.4
+		sample += sin(t * freq2 * TAU) * 0.3
+		sample += sin(t * freq3 * TAU) * 0.2
+		sample += sin(t * freq1 * 2.0 * TAU) * 0.1
+		sample *= envelope
+		
+		var value := clampi(int(sample * 24000.0), -32768, 32767)
+		data[i * 2] = value & 0xFF
+		data[i * 2 + 1] = (value >> 8) & 0xFF
+	
+	audio.data = data
+	_horn_player.stream = audio
+
+
+func _play_horn() -> void:
+	if _horn_player and not _horn_player.playing:
+		_horn_player.play()