Add scene-authored FX library and bull ability effects
An Fx autoload + one_shot_effect base so every effect is an inspector-editable .tscn (the systems/fx/ authoring dir): blood/slam/spark/flash primitives and the bull's kick/dash/slam/roll + movement effects (bull_*.tscn), fired via Fx.spawn() / Fx.attach(). Plus a preview gallery + smoke test, and bull_impact_fx.gd for the coded, non-particle slam rings + kick flash-pop. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01CCyaJPTHCH9EDthpf4A5Sj
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extends SceneTree
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## Seeds the placeholder effect .tscn (and the gallery scene) once, headless. Those .tscn are the
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## source of truth Siim edits in the inspector — this script only builds their first-draft defaults
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## (ported from the old code-built particles). Re-run only to reset a placeholder from scratch:
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## godot --headless --script tools/seed_fx_placeholders.gd
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const _EFFECT_SCRIPT := "res://systems/fx/one_shot_effect.gd"
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const _GALLERY_SCRIPT := "res://systems/fx/effect_gallery.gd"
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func _init() -> void:
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_seed_blood_burst()
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_seed_slam_dust()
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_seed_spark()
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_seed_hit_flash()
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_seed_gallery()
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print("Seeded FX placeholder scenes into res://systems/fx/")
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quit()
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# ── shared builders ─────────────────────────────────────────────────────────
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func _unshaded() -> StandardMaterial3D:
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var m := StandardMaterial3D.new()
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m.shading_mode = BaseMaterial3D.SHADING_MODE_UNSHADED
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m.transparency = BaseMaterial3D.TRANSPARENCY_ALPHA
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m.vertex_color_use_as_albedo = true
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m.cull_mode = BaseMaterial3D.CULL_DISABLED
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return m
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func _sphere(radius: float) -> SphereMesh:
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var s := SphereMesh.new()
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s.radius = radius
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s.height = radius * 2.0
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s.radial_segments = 4
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s.rings = 2
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s.material = _unshaded()
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return s
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func _ramp(c0: Color, c1: Color) -> Gradient:
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var g := Gradient.new()
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g.set_color(0, c0)
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g.set_color(1, c1)
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return g
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func _curve(points: Array) -> Curve:
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var c := Curve.new()
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for pt: Vector2 in points:
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c.add_point(pt)
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return c
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func _save(p: CPUParticles3D, path: String) -> void:
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p.set_script(load(_EFFECT_SCRIPT))
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var packed := PackedScene.new()
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packed.pack(p)
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ResourceSaver.save(packed, path)
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p.free()
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# ── the placeholders (defaults ported from the old code-built particles) ─────
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func _seed_blood_burst() -> void:
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var p := CPUParticles3D.new()
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p.name = "blood_burst"
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p.mesh = _sphere(0.07)
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p.color_ramp = _ramp(Color(1.0, 0.02, 0.02, 1.0), Color(0.25, 0.0, 0.0, 0.0))
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p.scale_amount_curve = _curve([Vector2(0.0, 1.0), Vector2(0.6, 0.5), Vector2(1.0, 0.0)])
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p.emitting = false
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p.one_shot = true
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p.explosiveness = 0.9
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p.amount = 25
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p.lifetime = 1.1
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p.randomness = 0.4
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p.local_coords = false
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p.direction = Vector3(0.0, 1.0, 0.0)
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p.spread = 80.0
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p.gravity = Vector3(0.0, -7.0, 0.0)
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p.initial_velocity_min = 4.0
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p.initial_velocity_max = 11.0
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p.scale_amount_min = 0.5
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p.scale_amount_max = 1.6
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_save(p, "res://systems/fx/blood_burst.tscn")
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func _seed_slam_dust() -> void:
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var p := CPUParticles3D.new()
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p.name = "slam_dust"
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p.mesh = _sphere(0.16)
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p.color_ramp = _ramp(Color(0.72, 0.60, 0.40, 0.9), Color(0.55, 0.45, 0.30, 0.0))
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p.scale_amount_curve = _curve([Vector2(0.0, 0.4), Vector2(0.35, 1.0), Vector2(1.0, 0.0)])
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p.emitting = false
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p.one_shot = true
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p.explosiveness = 1.0
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p.amount = 36
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p.lifetime = 0.9
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p.randomness = 0.5
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p.local_coords = false
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p.emission_shape = CPUParticles3D.EMISSION_SHAPE_SPHERE
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p.emission_sphere_radius = 0.5
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p.direction = Vector3(0.0, 1.0, 0.0)
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p.spread = 75.0
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p.gravity = Vector3(0.0, -6.0, 0.0)
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p.initial_velocity_min = 2.5
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p.initial_velocity_max = 6.5
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p.scale_amount_min = 0.6
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p.scale_amount_max = 1.4
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_save(p, "res://systems/fx/slam_dust.tscn")
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func _seed_spark() -> void:
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var p := CPUParticles3D.new()
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p.name = "spark"
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p.mesh = _sphere(0.03)
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p.color_ramp = _ramp(Color(1.0, 0.95, 0.6, 1.0), Color(1.0, 0.55, 0.1, 0.0))
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p.scale_amount_curve = _curve([Vector2(0.0, 1.0), Vector2(1.0, 0.0)])
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p.emitting = false
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p.one_shot = true
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p.explosiveness = 1.0
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p.amount = 14
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p.lifetime = 0.35
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p.randomness = 0.6
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p.local_coords = false
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p.direction = Vector3(0.0, 1.0, 0.0)
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p.spread = 45.0
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p.gravity = Vector3(0.0, -9.0, 0.0)
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p.initial_velocity_min = 3.0
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p.initial_velocity_max = 7.0
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p.scale_amount_min = 0.4
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p.scale_amount_max = 1.0
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_save(p, "res://systems/fx/spark.tscn")
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func _seed_hit_flash() -> void:
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var p := CPUParticles3D.new()
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p.name = "hit_flash"
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p.mesh = _sphere(0.05)
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p.color_ramp = _ramp(Color(1.0, 1.0, 1.0, 1.0), Color(1.0, 1.0, 1.0, 0.0))
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p.scale_amount_curve = _curve([Vector2(0.0, 0.2), Vector2(0.3, 1.2), Vector2(1.0, 0.0)])
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p.emitting = false
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p.one_shot = true
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p.explosiveness = 1.0
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p.amount = 6
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p.lifetime = 0.18
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p.randomness = 0.2
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p.local_coords = false
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p.spread = 180.0
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p.gravity = Vector3.ZERO
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p.initial_velocity_min = 0.5
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p.initial_velocity_max = 1.5
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p.scale_amount_min = 0.8
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p.scale_amount_max = 1.4
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_save(p, "res://systems/fx/hit_flash.tscn")
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func _seed_gallery() -> void:
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var root_node := Node3D.new()
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root_node.name = "EffectGallery"
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var cam := Camera3D.new()
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cam.name = "Camera3D"
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cam.transform = Transform3D(Basis.from_euler(Vector3(deg_to_rad(-18.0), 0.0, 0.0)), Vector3(0.0, 2.0, 4.5))
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root_node.add_child(cam)
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cam.owner = root_node
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var light := DirectionalLight3D.new()
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light.name = "Sun"
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light.rotation_degrees = Vector3(-50.0, -30.0, 0.0)
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root_node.add_child(light)
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light.owner = root_node
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var ground := MeshInstance3D.new()
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ground.name = "Ground"
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var plane := PlaneMesh.new()
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plane.size = Vector2(12.0, 12.0)
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var gmat := StandardMaterial3D.new()
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gmat.albedo_color = Color(0.62, 0.53, 0.36)
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plane.material = gmat
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ground.mesh = plane
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root_node.add_child(ground)
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ground.owner = root_node
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var ui := CanvasLayer.new()
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ui.name = "UI"
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root_node.add_child(ui)
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ui.owner = root_node
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var label := Label.new()
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label.name = "Label"
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label.position = Vector2(24.0, 20.0)
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label.text = "FX gallery"
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label.add_theme_font_size_override("font_size", 28)
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ui.add_child(label)
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label.owner = root_node
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root_node.set_script(load(_GALLERY_SCRIPT))
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var packed := PackedScene.new()
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packed.pack(root_node)
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ResourceSaver.save(packed, "res://systems/fx/effect_gallery.tscn")
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root_node.free()
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