42 lines
1.4 KiB
GDScript
42 lines
1.4 KiB
GDScript
# ScreenHpBar —— 角色头顶的屏幕空间 HP 条（§8.8）。
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#
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# 参考端在 CPythonTextTail / CGraphicTextInstance 的屏幕坐标中绘制尾标；
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# 这里用一个无输入的 Control 自绘背景、边框和填充，NetWorld 每帧负责把
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# 实体的世界坐标投影到屏幕。这样 HP 条不会随 Label3D 的 billboard 深度
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# 缩放，也不会被地图几何遮住。
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extends Control
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const DEFAULT_SIZE := Vector2(72.0, 6.0)
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const MIN_FILL_RATIO := 0.0
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const MAX_FILL_RATIO := 1.0
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var hp := 0
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var max_hp := 0
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var ratio := 0.0
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var dead := false
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func _init() -> void:
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mouse_filter = MOUSE_FILTER_IGNORE
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size = DEFAULT_SIZE
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custom_minimum_size = DEFAULT_SIZE
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func set_vitals(current_hp: int, current_max_hp: int, is_dead: bool) -> void:
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hp = current_hp
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max_hp = current_max_hp
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dead = is_dead
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ratio = clampf(float(hp) / float(max_hp), MIN_FILL_RATIO, MAX_FILL_RATIO) \
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if max_hp > 0 else 0.0
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queue_redraw()
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func _draw() -> void:
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var r := Rect2(Vector2.ZERO, size)
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# Dark backing and a one-pixel black border keep the bar legible over terrain.
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draw_rect(r, Color(0.02, 0.02, 0.025, 0.86), true)
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var inner := Rect2(Vector2.ONE, Vector2(maxf(0.0, size.x - 2.0), maxf(0.0, size.y - 2.0)))
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var fill_color := Color(0.35, 0.35, 0.38, 0.95) if dead \
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else Color(0.88, 0.14, 0.14, 0.98)
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inner.size.x *= ratio
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if inner.size.x > 0.0:
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draw_rect(inner, fill_color, true)
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draw_rect(r, Color(0.0, 0.0, 0.0, 0.95), false, 1.0)
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