homework

character_body_2d.gd

@@ -0,0 +1,74 @@
+extends CharacterBody2D
+
+const SPEED = 70.0
+const JUMP_VELOCITY = -200.0
+var HP:int = 50
+@onready var Player = $"../Playar"
+@onready var MIKU = $"."
+@onready var cooldown = $timeJUMP
+@onready var cooldownFIRE = $timerFIRE
+const Bullet_scene1 = preload("res://scene/entities/bullet.tscn")# 把 Bullet.tscn 拖进来
+#@export var bullet_count: int = 5      # 一次发射几颗子弹
+#@export var spread_angle: float = 65.0# 散射总角度（度）
+#@export var bullet_speed: float = 600.0
+#@onready var muzzle: Marker2D = $Muzzle # 枪口位置（可选，没有就用玩家坐标）
+#@onready var FLAG:Marker2D = $FLAG
+#var was_on_floor = false#定义为布尔值
+
+#func shoot():
+#	var angle_step = 0.0
+#	if bullet_count > 1:
+#		angle_step = spread_angle / (bullet_count - 1)
+#	var start_angle = -spread_angle / 2.0
+#	if is_instance_valid(Player) and is_instance_valid(MIKU):
+#		for i in range(bullet_count):
+#			var Bullet = Bullet_scene1.instantiate()
+#			var current_angle = start_angle + i * angle_step
+#			Bullet.global_position =muzzle.global_position
+#			Bullet.target_position = Player.global_position
+#			var direction = (Bullet.target_position - Bullet.global_position).normalized()
+#			var rotated_direction = direction.rotated(deg_to_rad(current_angle))
+#			Bullet.target_position = Player.global_position + rotated_direction * 1000
+#			get_tree().current_scene.add_child(Bullet)
+#	cooldownFIRE.start()
+
+
+var was_on_floor := false
+var is_dead := false
+
+func _ready() -> void:
+	add_to_group("enemy")
+	was_on_floor = false   # 第一帧交给 _physics_process 判定
+
+func _physics_process(delta: float) -> void:
+	if not is_on_floor():              #重力
+		velocity += get_gravity() * delta
+		var direction := signf(Player.global_position.x - global_position.x)
+		velocity.x = direction * SPEED
+	if is_on_floor():
+			velocity.y = JUMP_VELOCITY
+	elif is_on_floor():
+		# 只有站在地上时才刹车，空中保留惯性
+		velocity.x = 0
+
+	move_and_slide()
+
+	if is_on_floor() and not was_on_floor:
+		cooldown.start()
+
+	was_on_floor = is_on_floor()
+
+func take_damage(amount: int) -> void:
+	if is_dead:
+		return
+	HP = max(HP - amount, 0)
+	if HP <= 0:
+		die()
+
+func die() -> void:
+	is_dead = true
+	call_deferred("queue_free")
+
+
+func _on_jiance_body_entered(body: Node2D) -> void:
+	pass # Replace with function body.