class_name EnemyDef
extends Resource
## Data-only description of a trash enemy. Behaviour is picked from a small set
## of readable, predictable movements -- players should be able to learn an
## enemy in one encounter.

enum Move {
	## Never moves. Pure turret.
	STATIC,
	## Slides along a fixed heading, bouncing off the arena edges.
	DRIFT,
	## Circles its spawn point at a fixed radius.
	ORBIT,
	## Walks straight at the nearest player, slowly.
	APPROACH,
	## Keeps a preferred distance from the nearest player.
	STRAFE,
}

@export var id: StringName = &"drone"
@export var display_name: String = "Drone"
@export var max_hp: int = 40
@export var radius: float = 14.0
@export var move: Move = Move.DRIFT
@export var speed: float = 60.0
## ORBIT radius, or STRAFE preferred distance.
@export var move_param: float = 120.0
## Ticks between direction re-evaluations for APPROACH/STRAFE, so enemies read
## as deliberate rather than twitchy.
@export var retarget_interval: int = 30
## How far this enemy notices a player, in world units. It also needs line of
## sight -- range alone would mean shooting through walls.
@export var aggro_range: float = 420.0
## Index the client renderer uses to pick a shape/colour.
@export var visual: int = 0
@export var emitters: Array[BulletEmitter] = []
## The emitter timeline wraps at this many ticks.
@export var pattern_loop_ticks: int = 240
## Never takes damage. Exists for the hub's practice target, whose whole job is
## to still be there tomorrow -- expressing that as a flag rather than as a
## large health pool means it cannot be worn down by a patient player, and
## keeps its health inside the u16 the snapshot sends.
@export var indestructible: bool = false
## What this enemy may leave behind. Rolled once per entry on death, against
## the world's own RNG. Empty for anything that should drop nothing.
@export var loot: Array[LootDrop] = []