extends Node3D

@export var particle_count: int = 100

@onready var particles: GPUParticles3D = $GPUParticles3D

func _ready():
	print("Spray Emitter Ready!")
	$SprayButton.button_pressed.connect(emit_particles)
	setup_particles()

func emit_particles():
	print("Emittiere ", particle_count, " Seifenblasen!")
	particles.emitting = true
	particles.restart()

func setup_particles():
	# Anzahl der Partikel
	particles.amount = particle_count
	particles.lifetime = 45.0
	particles.one_shot = true
	particles.explosiveness = 0.2
	particles.visibility_aabb = AABB(Vector3(-50, -50, -50), Vector3(100, 100, 100))
	
	# WICHTIG: Fixed FPS für gleichmäßige Bewegung
	particles.fixed_fps = 60
	particles.interpolate = true
	
	# Process Material
	var material = ParticleProcessMaterial.new()
	
	# Emission - größerer Radius für mehr Abstand
	material.emission_shape = ParticleProcessMaterial.EMISSION_SHAPE_SPHERE
	material.emission_sphere_radius = 8.0  # Größer = mehr Abstand zwischen Partikeln
	
	# Initial velocity
	material.initial_velocity_min = 0.2
	material.initial_velocity_max = 0.3
	material.direction = Vector3(0, 0, 0)
	material.spread = 180.0
	
	# Schwerkraft
	material.gravity = Vector3(0, -3.5, 0)  # Sanft nach unten
	
	# Größe - jetzt runde Kugeln statt Tropfen
	material.scale_min = 0.5
	material.scale_max = 1.0
	# WICHTIG: Aspect Ratio für runde Kugeln (nicht länglich)
	material.scale_curve = null  # Keine Größenänderung über Zeit
	
	# Luftwiderstand
	material.damping_min = 2.0
	material.damping_max = 4.0
	
	# Turbulenz
	material.turbulence_enabled = true
	material.turbulence_noise_strength = 0.3
	material.turbulence_noise_scale = 5.0
	material.turbulence_noise_speed = Vector3(0.1, 0.1, 0.1)
	material.turbulence_influence_min = 0.05
	material.turbulence_influence_max = 0.1
	
	# Farbe - transparent
	material.color = Color(0.3, 0.8, 1.0, 0.3)  # Hellblau
	
	particles.process_material = material
	
	# Sphere Mesh - RUND, nicht länglich
	var sphere_mesh = SphereMesh.new()
	sphere_mesh.radial_segments = 32  # Mehr Segmente = glatter
	sphere_mesh.rings = 16
	sphere_mesh.radius = 1.0  # Wird durch scale_min/max skaliert
	sphere_mesh.height = 2.0  # radius * 2 = perfekte Kugel
	
	# Material für Seifenblasen
	var sphere_material = StandardMaterial3D.new()
	
	# Transparenz
	sphere_material.transparency = BaseMaterial3D.TRANSPARENCY_ALPHA
	sphere_material.blend_mode = BaseMaterial3D.BLEND_MODE_MIX
	sphere_material.depth_draw_mode = BaseMaterial3D.DEPTH_DRAW_OPAQUE_ONLY
	sphere_material.cull_mode = BaseMaterial3D.CULL_BACK
	
	# Farbe - durchsichtig mit leichtem Schimmer
	sphere_material.albedo_color = Color(0.796, 0.937, 0.996, 0.188)  # Sehr transparent!
	sphere_material.emission_enabled = true
	sphere_material.emission = Color(0.4, 0.694, 0.953, 0.2) # bläulich Leuchten
	sphere_material.emission_energy_multiplier = 0.15
	# Reflexionen - wie echte Seifenblasen
	sphere_material.metallic = 0.0
	sphere_material.roughness = 0.1  # Sehr glatt = starke Reflexionen
	sphere_material.specular_mode = BaseMaterial3D.SPECULAR_SCHLICK_GGX
	
	# Refraktion (Lichtbrechung) für Glaseffekt
	sphere_material.refraction_enabled = true
	sphere_material.refraction_scale = 0.1
	sphere_material.refraction_texture_channel = BaseMaterial3D.TEXTURE_CHANNEL_GREEN
	
	# Rim Lighting - leuchtende Kanten wie bei Seifenblasen
	sphere_material.rim_enabled = true
	sphere_material.rim = 0.8
	sphere_material.rim_tint = 0.5
	
	# Fresnel - mehr Reflexion an den Rändern
	sphere_material.clearcoat_enabled = true
	sphere_material.clearcoat = 0.3
	sphere_material.clearcoat_roughness = 0.01
	
	# WICHTIG: Nicht Unshaded, damit Reflexionen funktionieren
	sphere_material.shading_mode = BaseMaterial3D.SHADING_MODE_PER_PIXEL
	
	sphere_mesh.material = sphere_material
	particles.draw_pass_1 = sphere_mesh
	particles.draw_passes = 1
	
	print("Seifenblasen-Setup abgeschlossen!")