player/player.gd

   1 extends KinematicBody
   2
   3 const SPEED_FORWARD = 20
   4 const SPEED_MAX = 20
   5 const SPEED_TURN = 120
   6 const SPEED_AIM = PI / 2
   7
   8 var bullet_alterating = 0
   9 var velocity = Vector3()
  10 var scene_bullet = preload("res://player/bullet.tscn")
  11
  12 # Called when the node enters the scene tree for the first time.
  13 func _ready():
  14         pass # Replace with function body.
  15
  16 func get_player_input(delta):
  17         var vec_lateral = transform.basis.x
  18         var vec_vertical = transform.basis.y
  19
  20
  21         if Input.is_action_pressed("player_left"):
  22                 velocity += SPEED_TURN * -vec_lateral * delta
  23         elif Input.is_action_pressed("player_right"):
  24                 velocity += SPEED_TURN * vec_lateral * delta
  25
  26         if Input.is_action_pressed("player_up"):
  27                 velocity += SPEED_TURN * vec_vertical * delta
  28         elif Input.is_action_pressed("player_down"):
  29                 velocity += SPEED_TURN * -vec_vertical * delta
  30
  31         if Input.is_action_pressed("player_aim_up"):
  32                 rotate_object_local(Vector3.RIGHT, SPEED_AIM * delta)
  33         elif Input.is_action_pressed("player_aim_down"):
  34                 rotate_object_local(Vector3.RIGHT, -SPEED_AIM * delta)
  35
  36         if Input.is_action_pressed("player_aim_left"):
  37                 rotate(Vector3.UP, SPEED_AIM * delta)
  38         elif Input.is_action_pressed("player_aim_right"):
  39                 rotate(Vector3.UP, -SPEED_AIM * delta)
  40
  41         # offense
  42         if Input.is_action_pressed("player_fire"):
  43                 if $bullet_timer.time_left == 0:
  44                         fire_bullet()
  45
  46 func fire_bullet():
  47         var bullet = scene_bullet.instance()
  48         $"..".add_child(bullet)
  49
  50         bullet_alterating = (bullet_alterating + 1) % 2
  51         bullet.translation = translation - transform.basis.x * (4 * bullet_alterating - 2)
  52         bullet.rotation = rotation
  53         bullet.direction = -transform.basis.z
  54
  55         $bullet_timer.start()
  56
  57 func _process(delta):
  58         # get velocity changes player asks for
  59         get_player_input(delta)
  60
  61         # move foward according to the camera's POV
  62         var vec_forward = transform.basis.z
  63         velocity += SPEED_FORWARD * -vec_forward * delta
  64
  65         # air friction
  66         var friction = SPEED_MAX / velocity.length()
  67         velocity *= friction
  68
  69 func _physics_process(_delta):
  70         velocity = move_and_slide(velocity, Vector3.UP)