luke358
126 lines
2.7 KiB
GDScript
126 lines
2.7 KiB
GDScript
extends Node2D
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class_name Weapon
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@onready var sprite_2d: Sprite2D = $Sprite2D
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@onready var collision: CollisionShape2D = %CollisionShape2D
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@onready var cooldown_timer: Timer = $CooldownTimer
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@onready var weapon_behavior: WeaponBehavior = $WeaponBehavior
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var data: ItemWeapon
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var is_attacking := false
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var atk_start_pos: Vector2
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var targets: Array[Enemy]
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var closest_target: Enemy
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var weapon_spread: float
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func _ready() -> void:
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atk_start_pos = sprite_2d.position
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func _process(delta: float) -> void:
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if not is_attacking:
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if targets.size() > 0:
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update_closest_target()
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else:
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closest_target = null
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rotate_to_target()
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update_visuals()
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if can_use_weapon():
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use_weapon()
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func setup_weapon(_data: ItemWeapon) -> void:
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self.data = _data
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collision.shape.radius = data.stats.max_range
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func use_weapon() -> void:
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calculate_spread()
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weapon_behavior.execute_attack()
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cooldown_timer.wait_time = data.stats.cooldown
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cooldown_timer.start()
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func rotate_to_target() -> void:
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if is_attacking:
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rotation = get_custom_rotation_to_target()
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else:
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rotation = get_rotation_target()
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func get_custom_rotation_to_target() -> float:
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if not closest_target or not is_instance_valid(closest_target):
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return rotation
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var rot := global_position.direction_to(closest_target.global_position).angle()
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return rot + weapon_spread
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func get_rotation_target() -> float:
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if targets.size() == 0:
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return get_idle_rotation()
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var rot := global_position.direction_to(closest_target.global_position).angle()
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return rot
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func get_idle_rotation() -> float:
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if Global.player.is_facing_right():
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return 0
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else:
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return PI
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func update_visuals() -> void:
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if abs(rotation) > PI / 2:
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sprite_2d.scale.y = -0.5
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else :
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sprite_2d.scale.y = 0.5
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func calculate_spread() -> void:
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weapon_spread += randf_range(-1 + data.stats.accurary, 1- data.stats.accurary)
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rotation += weapon_spread
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func update_closest_target() -> void:
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closest_target = get_closest_target()
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func get_closest_target() -> Node2D:
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# 没有敌人在攻击范围
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if targets.size() == 0:
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return
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var closest_enemy := targets[0]
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var closest_distance := global_position.distance_to(closest_enemy.global_position)
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for i in range(1, targets.size()):
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var target: Enemy = targets[i]
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var distance := global_position.distance_to(target.global_position)
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if distance < closest_distance:
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closest_enemy = target
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closest_distance = distance
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return closest_enemy
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func can_use_weapon() -> bool:
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return cooldown_timer.is_stopped() and closest_target
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func _on_range_area_area_entered(area: Area2D) -> void:
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targets.push_back(area)
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func _on_range_area_area_exited(area: Area2D) -> void:
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targets.erase(area)
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if targets.size() == 0:
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closest_target = null
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