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extends Spatial
var _path : Node
var _enemies : Node
var _projectiles_holder : Node
var _enemies_holder : Node
var _base : Spatial
var _gun : Spatial
var _shooting_point : Vector3
var _normal : Vector3
var aim_mode = "first"
var _target = null
var projectile : PackedScene
var info : Dictionary
var cooldown_timer = 0
func _ready():
var root = get_tree().root.get_child(0)
_path = root.get_node("path")
_enemies = root.get_node("enemies")
_projectiles_holder = root.get_node("projectiles")
_enemies_holder = root.find_node("enemies")
projectile = load("res://scenes/projectiles/bullet.tscn")
func refresh_normal ():
_normal = transform.basis * Vector3.UP
_shooting_point = transform.origin + 0.25 * _normal
func refresh_model():
_base = get_node("model").find_node("pivot*").find_node("base*")
_gun = _base.find_node("gun*")
func refresh_info(tinfo):
self.info = tinfo
func filter_in_range(set):
var filtered = []
for target in set:
var node = _enemies.node_from_id(target)
var dist = (node.transform.origin - _shooting_point).length_squared()
if dist < info.range*info.range:
filtered += [target]
return filtered
func filter_visible(set):
var space: PhysicsDirectSpaceState = get_world().direct_space_state
var from = _shooting_point
var filtered = []
for target in set:
var node = _enemies.node_from_id(target)
var to = node.transform.origin
var result = space.intersect_ray(from, to, _path.nodes, 1)
if result.size() > 0:
var hit = result.collider.get_parent()
if hit == node:
filtered += [ target ]
return filtered
func get_target():
var ids = []
for id in _enemies.enemies: ids.append(id)
var set = ids
set = filter_in_range(set)
set = filter_visible(set)
if set.size() > 0:
return set[0]
else: return null
func _physics_process(delta):
if !_enemies.enemies.has(_target):
_target = null
else:
if _enemies.enemies[_target].hp <= 0:
_target = null
if _target == null:
_target = get_target()
_target = get_target()
if _target != null:
var enemy = _enemies.node_from_id(_target)
var direction = (enemy.transform.origin - _shooting_point).normalized()
var proj_normal = direction - _normal.dot(direction) * _normal
var base_rot : Quat = Transform().looking_at(proj_normal, _normal).basis.get_rotation_quat()
var perp = -proj_normal.cross(_normal).normalized()
var proj_forward = direction - perp.dot(direction) * perp
var gun_rot : Quat = Transform().looking_at(proj_forward, perp).basis.get_rotation_quat()
gun_rot = Quat(direction, PI/2) * gun_rot
gun_rot = gun_rot.normalized()
gun_rot = base_rot.inverse() * gun_rot
var base_basis = _base.global_transform.basis.get_rotation_quat()
var base_angle = base_basis.angle_to(base_rot)
if base_angle > 0.01:
var base_amt = (info.turn_speed * delta) / base_angle
base_amt = min(1, base_amt)
_base.global_transform.basis = Basis(base_basis.slerp(Basis(base_rot), base_amt))
var gun_basis = _gun.transform.basis.get_rotation_quat()
var gun_angle = gun_basis.angle_to(gun_rot)
if gun_angle > 0.01:
var gun_amt = (info.turn_speed * delta) / gun_angle
gun_amt = min(1, gun_amt)
_gun.transform.basis = Basis(gun_basis.slerp(Basis(gun_rot), gun_amt))
cooldown_timer += delta
if cooldown_timer > info.cooldown:
cooldown_timer -= info.cooldown
shoot()
func spread (amt : int) -> Array:
var dirs = []
var width : int = ceil(sqrt(amt))
for i in amt:
var dir = _gun.global_transform.basis
var x = floor(i%width)-width/2+(width+1)%2*0.5
var y = floor(i/width)-floor(sqrt(amt)-1)/2
var spread = info.projectile.spread
dir = dir.rotated(_normal, deg2rad(x*spread))
dir = dir.rotated(_normal.cross(dir.z).normalized(), deg2rad(y*spread))
dirs.append(dir)
return dirs
func shoot ():
if info.projectile.amount > 1:
for dir in spread(info.projectile.amount):
match info.projectile.type:
"bullet": shoot_bullet(dir)
"ray": shoot_ray(dir)
else:
match info.projectile.type:
"bullet": shoot_bullet(_gun.global_transform.basis)
"ray": shoot_ray(_gun.global_transform.basis)
func shoot_bullet (dir : Basis):
var instance = projectile.instance()
_projectiles_holder.add_child(instance)
instance.transform.basis = dir
instance.transform.origin = _shooting_point - dir.z*0.3;
instance.shooter = self
instance.damage = info.damage
instance.speed = info.projectile.speed
func shoot_ray (dir : Basis):
var space: PhysicsDirectSpaceState = get_world().direct_space_state
var from = _shooting_point
var to = _shooting_point - dir.z*info.range;
var result = space.intersect_ray(from, to, _path.nodes, 1)
if result.size() > 0:
var parent = result.collider.get_parent()
var groups = parent.get_groups()
if "enemies" in groups:
_enemies_holder.damage(parent.name, info.damage)
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