giants-godot/entities/genericprojectile.gd

extends Entity
class_name GenericProjectile

export var BULLET_SPEED: float = 1
export var BULLET_DAMAGE: float = 15

export var LIFETIME: float = 0
var _timer = 0

func _init():
	gravity_scale = 0

enum WeaponProperties {
	HOMING = 0x00000001,
	BOUNCE = 0x00000002,
	PROXIMITY = 0x00000004,
	AREA_HURT = 0x00000008,
	TRIGGER_OBJECT = 0x00000010,
	TRIGGER_GROUND = 0x00000020,
	TRIGGER_TIMEOUT = 0x00000040,
	EXPLODE = 0x00000080,
	DO_ORIENTATION = 0x00000100,
	COLLIDE_GROUND = 0x00000200,
	GROUND_RIPPLE = 0x00000400,
	DEFLECTABLE = 0x00000800,
	SHOOTABLE = 0x00001000,
	FIRST_FIRE_DELAY = 0x00002000,
	FLARE = 0x00004000,
	INCENDIARY = 0x00008000,
	EMP = 0x00010000,
}

var from: Transform
var to: Vector3 = Vector3.ZERO
export(int, FLAGS) var properties

func _physics_process(delta):
	if LIFETIME != 0:
		_timer += delta
		if _timer >= LIFETIME:
			queue_free()

func create(_from: Transform, _to: Vector3, exclude_collisions: Array):
	from = _from
	to = _to
	global_transform = from
	
	for object in exclude_collisions:
		add_collision_exception_with(object)
	add_central_force((to - from.origin).normalized() * BULLET_SPEED)