145 lines
3.6 KiB
GDScript
145 lines
3.6 KiB
GDScript
class_name EnemyBase
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extends CharacterBody2D
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@export var move_speed: float = 100
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@export var max_health: float = 10.0
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@export var default_contact_damage: float = 0.0
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@export var target_distance: float = 6.0
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@export var path_update_interval: float = 1.5
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@onready var target_cast: RayCast2D = $TargetCast
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@onready var animation_player: AnimationPlayer = $AnimationPlayer
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@onready var contact_damage_cd: Timer = $ContactDamageCD
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@onready var nav_agent: NavigationAgent2D = $NavigationAgent2D
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@onready var collision_shape_2d: CollisionShape2D = $CollisionShape2D
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@onready var shape_cast_2d: ShapeCast2D = $ShapeCast2D
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var player: Player
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var target: Node2D
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var god_mode: bool = false
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var is_dead: bool = false
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var health: float
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var _path_update_timer: float = 0.0
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func _ready() -> void:
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health = max_health
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shape_cast_2d.shape.radius = collision_shape_2d.shape.radius
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shape_cast_2d.enabled = false
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_find_player()
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func _find_player():
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if not player:
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player = get_tree().get_first_node_in_group(GlobalConst.GROUP_PLAYER)
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target = player
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func _physics_process(delta: float) -> void:
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if not target:
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return
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do_movement(delta)
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check_contact_damage()
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func do_movement(delta: float) -> void:
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if not target:
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return
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if global_position.distance_to(target.global_position) < target_distance:
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return
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_path_update_timer -= delta + randf()
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if _has_direct_path():
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shape_cast_2d.enabled = false
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_do_simple_movement()
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else:
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_do_nav_agent_movement()
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func _has_direct_path():
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target_cast.target_position = to_local(target.global_position)
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target_cast.enabled = true
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return not target_cast.is_colliding()
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func _do_simple_movement():
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var direction = global_position.direction_to(target.global_position)
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var distance = global_position.distance_to(target.global_position)
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if distance > 4:
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velocity = direction * move_speed
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move_and_slide()
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func _do_nav_agent_movement():
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if _path_update_timer <= 0.0:
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_path_update_timer = path_update_interval
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nav_agent.target_position = target.global_position
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if nav_agent.is_navigation_finished():
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return
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var next_point = nav_agent.get_next_path_position()
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var direction = (next_point - global_position).normalized()
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shape_cast_2d.target_position = to_local(next_point)
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shape_cast_2d.enabled = true
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if shape_cast_2d.is_colliding():
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direction = direction.bounce(shape_cast_2d.get_collision_normal(0)).normalized()
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velocity = direction * move_speed
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move_and_slide()
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func check_contact_damage():
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if default_contact_damage == 0.0:
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return
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if global_position.distance_to(target.global_position) > target_distance:
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return
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deal_contact_damage()
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func deal_contact_damage():
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if target.is_in_group("damagable"):
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if contact_damage_cd.is_stopped():
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target.take_damage(default_contact_damage)
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contact_damage_cd.start()
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func take_damage(value: float, is_crit: bool = false):
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if god_mode:
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return
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health -= value
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var dm = preload("res://scenes/damage_numbers.tscn").instantiate()
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dm.damage_taken = value
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dm.critical_damage = is_crit
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animation_player.play("generic_anims/take_damage")
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add_child(dm)
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if health <= 0:
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die()
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func cheer():
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target_distance = 2
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if not animation_player.is_playing():
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animation_player.play("generic_anims/cheer")
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func die():
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if is_dead:
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return
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is_dead = true
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drop_xp_orb()
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target = null
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velocity = Vector2.ZERO
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animation_player.play("generic_anims/die")
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func drop_xp_orb() -> void:
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var orb: XPOrb = preload("res://scenes/xp_orb.tscn").instantiate()
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orb.value = 5
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orb.position = position
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get_parent().add_child(orb)
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func _on_animation_player_animation_finished(anim_name: StringName) -> void:
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if is_dead:
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queue_free()
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