04 Stage

In this chapter, we will replace the template's stage debug output with the judgment line.

Lifetime

The stage must remain active throughout the level. The template already makes spawn_time and despawn_time return -999999 and 999999, which keep the Stage active throughout the level. Keep those callbacks unchanged.

Skin Sprite

The play section already declared Skin.judge_line. Watch mode uses the same Skin collection, so no new skin declaration is needed.

Drawing

Edit guide/watch/stage.py. Replace the debug_log and time imports and the debug implementation of update_parallel. The completed file should contain:

from sonolus.script.archetype import WatchArchetype
from sonolus.script.quad import Rect

from guide.lib import archetype_names
from guide.lib.layout import Config
from guide.lib.skin import Skin


class WatchStage(WatchArchetype):
    name = archetype_names.STAGE

    def spawn_time(self) -> float:
        return -999999

    def despawn_time(self) -> float:
        return 999999

    def update_parallel(self):
        layout = Rect(
            l=Config.judge_line_l,
            r=Config.judge_line_r,
            t=1 - Config.note_radius / 4,
            b=1 + Config.note_radius / 4,
        )
        Skin.judge_line.draw(layout, z=0, a=1)

Reload Watch: the debug time log should be gone, and the judgment line should remain visible while you seek through the level.