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Bullosseum/tools/preview_crowd.gd
T
2026-07-30 15:12:22 +03:00

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extends SceneTree
## Quick visual check for the billboard crowd: builds the generated fallback stand and
## captures two frames a moment apart (so the flipbook visibly advances) from an angle
## (so we can confirm the sprites turn to face the camera).
##
## godot --script tools/preview_crowd.gd
## Output: tools/preview/crowd_a.png, crowd_b.png
const OUT := "res://tools/preview"
func _init() -> void:
_run.call_deferred()
func _run() -> void:
DirAccess.make_dir_recursive_absolute(OUT)
var we := WorldEnvironment.new()
var env := Environment.new()
env.background_mode = Environment.BG_COLOR
env.background_color = Color(0.10, 0.12, 0.16)
we.environment = env
root.add_child(we)
var crowd := MultiMeshInstance3D.new()
crowd.set_script(load("res://crowd_billboards.gd"))
crowd.set("source_path", NodePath()) # force the generated fallback stand
crowd.set("fallback_count", 90)
root.add_child(crowd)
var cam := Camera3D.new()
cam.fov = 62.0
cam.current = true
root.add_child(cam)
# Outside the ring edge, elevated, looking across the centre: the NEAR arc has its
# back to us (facing inward), the FAR arc faces us — so this shot proves both the
# per-segment inward facing and the front/back sheet selection.
cam.look_at_from_position(Vector3(0.0, 16.0, 44.0), Vector3(0.0, 3.0, 0.0), Vector3.UP)
await create_timer(0.15).timeout
_shot("crowd_a.png")
await create_timer(0.45).timeout # ~45 clap frames later
_shot("crowd_b.png")
quit(0)
func _shot(name: String) -> void:
var img := root.get_viewport().get_texture().get_image()
if img == null:
print("capture failed: ", name)
return
img.save_png(OUT + "/" + name)
print("captured ", name, " ", img.get_width(), "x", img.get_height())