init

scripts/Contents/Characters/Rooster.gd

@@ -0,0 +1,9 @@
+extends EntityBase
+class_name Rooster
+
+func ai():
+	var vector = Vector2(
+		Input.get_axis("m_left", "m_right"),
+		Input.get_axis("m_up", "m_down")
+	)
+	move(vector)

scripts/Statemachine/ColorBar.gd

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+@tool
+extends Control
+
+@export var minValue: float = 0
+@export var maxValue: float = 100
+@export var currentValue: float = 50
+@export var backColor: Color
+@export var middleColor: Color
+@export var frontColor: Color
+@export var speed1: float = 0.9
+@export var speed2: float = 0.01
+
+var middleValue = 0
+var frontValue = 0
+var forwardDirection = -1
+
+func getPercent(value: float):
+	return (value - minValue) / (maxValue - minValue)
+func setCurrent(value: float):
+	forwardDirection = sign(value - currentValue)
+	currentValue = value
+
+func _ready():
+	middleValue = currentValue
+	frontValue = currentValue
+func _draw():
+	draw_rect(Rect2(0, 0, size.x, size.y), backColor)
+	draw_rect(Rect2(0, 0, size.x * getPercent(middleValue), size.y), middleColor)
+	draw_rect(Rect2(0, 0, size.x * getPercent(frontValue), size.y), frontColor)
+func _process(_delta: float) -> void:
+	middleValue = lerpf(middleValue, currentValue, speed1 if forwardDirection > 0 else speed2)
+	frontValue = lerpf(frontValue, currentValue, speed1 if forwardDirection < 0 else speed2)
+	queue_redraw()

scripts/Statemachine/EntityBase.gd

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+extends CharacterBody2D
+class_name EntityBase # 这是个抽象类
+
+@export var maxHealth: float = 100
+@export var movementSpeed: float = 100
+
+var health: float = 0
+
+func _ready():
+	health = maxHealth
+func _process(_delta):
+	health = clamp(health, 0, maxHealth)
+func _physics_process(_delta: float) -> void:
+	velocity = Vector2.ZERO
+	ai()
+	move_and_slide()
+
+# 通用方法
+func move(direction: Vector2):
+	velocity = direction.normalized() * movementSpeed
+
+# 抽象方法
+func ai():
+	pass
+func attack(_type: int):
+	pass

scripts/Statemachine/EntityStateBar.gd

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+extends Node2D
+
+@export var entity: EntityBase
+
+@onready var healthBar = $"%health"
+
+func _process(_delta):
+	if entity:
+		healthBar.maxValue = entity.maxHealth
+		healthBar.setCurrent(entity.health)