I have a "parent" player scene, and I inherit scenes for each player. The parent player scene has a camera. When the game switches between players, one player turns off its camera, and the other player turns its camera on:
if state != State.ACTIVE:
# If this player is becoming active, also
# set camera current
state = State.ACTIVE
camera.current = true
else:
# If player is not becoming active,
# disable this players camera
camera.current = false
But players can be in different positions, so the camera "jumps" from one to the other. Can we do something more sophisticated, like set the new camera to the current position so the smooth setting can be used to handle the transition?
One idea is to do get_viewport().get_camera() to find the current position of the camera to try and sync the position of the current camera with the new camera that is about to turn on, but appears to not work for 2D scenes. CF: https://github.com/godotengine/godot/pull/38317
Sadly, as you found out, there is no way to get the current Camera2D in Godot 3.x. And you found the pull request that adds the feature to Godot 4.0.
What I'm going to suggest is to have one sole Camera2D, so that one is always the current one. And you can define Position2D inside your scenes that can serve as interpolation targets to move the Camera2D.
I have an script that I think will be useful for you (I made it to be RemoteTransform2D but backwards, it does push a transform, it pulls it), I call it anchor_transform_2d.gd:
tool
class_name AnchorTransform2D
extends Node2D
export var anchor_path:NodePath setget set_anchor_path
export var reference_path:NodePath setget set_reference_path
export var set_local_transform:bool
export(int, FLAGS, "x", "y") var translation_mode:int
export(int, FLAGS, "x", "y") var scale_mode:int
export var rotation_mode:bool
var _anchor:Node2D
var _reference:Node2D
func _physics_process(_delta: float) -> void:
if not is_instance_valid(_anchor) or Engine.editor_hint:
set_physics_process(false)
return
#INPUT
var input := _anchor.global_transform
if is_instance_valid(_reference):
input = _reference.global_transform.affine_inverse() * input
#TRANSLATION
var origin := Vector2 (
input.origin.x if translation_mode & 1 else 0.0,
input.origin.y if translation_mode & 2 else 0.0
)
#ROTATION
var angle := 0.0
if rotation_mode:
angle = input.get_rotation()
#SCALE
var source_scale = input.get_scale()
var scaling := Vector2 (
source_scale.x if scale_mode & 16 else 1.0,
source_scale.y if scale_mode & 32 else 1.0
)
#RESULT
_set_target_transform(
Transform2D(angle, origin) * Transform2D.IDENTITY.scaled(scaling)
)
func set_anchor_path(new_value:NodePath) -> void:
anchor_path = new_value
if not is_inside_tree():
yield(self, "tree_entered")
_anchor = get_node_or_null(anchor_path) as Node2D
set_physics_process(is_instance_valid(_anchor) and not Engine.editor_hint)
if Engine.editor_hint:
update_configuration_warning()
func set_reference_path(new_value:NodePath) -> void:
reference_path = new_value
if not is_inside_tree():
yield(self, "tree_entered")
_reference = get_node_or_null(reference_path) as Node2D
func _set_target_transform(new_value:Transform2D) -> void:
if set_local_transform:
transform = new_value
return
global_transform = new_value
func _get_configuration_warning() -> String:
if _anchor == null:
return "Anchor not found"
return ""
Add this attached to a Node2D in anchor_path set the target from which you want to pull the transform (anchor_path is a NodePath, you can set to it something like $Position2D.get_path()). And set what do you want to copy (you can choose any combination of position x, position y, scaling x, scaling y, and rotation). Then put the Camera2D as a child of the AnchorTransform2D, and set smoothing_enabled to true.
Rundown of the properties:
anchor_path: A NodePath pointing to the Node2D you want to pull the transform from.
reference_path: A NodePath pointing to a Node2D used to make the transform relative (you will be taking the transform of what you put in anchor_path relative to what you put in reference_path).
set_local_transform: Set to true if you want to pull the transform as local (relative to the parent of AnchorTransform2D), leave to false to set the global transform instead.
translation_mode: Specifies if you are going to copy the x position, y position, both or neither.
scale_mode: Specifies if you are going to copy the x scale, y scale, both or neither.
rotation_mode: Specifies if you are going to copy the rotation or not.
The only reason the script is a tool script is to give you a warning in the editor if you forgot to set the anchor_path.
Related
extends KinematicBody2D
var active = false
var car_zone = false
#car driving
func get_car_input():
var velocity = Vector2.ZERO
var speed = 200
if Input.is_action_pressed("forward"):
velocity.y = -1
if Input.is_action_pressed("backward"):
velocity.y = 1
if Input.is_action_pressed("left"):
velocity.x = -1
if Input.is_action_pressed("right"):
velocity.x = 1
move_and_slide(velocity*speed)
func _physics_process(_delta):
if active:
get_car_input()
leaving_car()
if !active:
entering_car()
pass
#entering/exiting car
func _on_player_detect_body_entered(body):
if body.name == "player":
car_zone = true
func _on_player_detect_body_exited(body):
if body.name == "player":
car_zone = false
func entering_car():
if Input.is_action_just_pressed("interact") && car_zone == true:
var hidden_player = get_parent().get_node("player")
hidden_player.active = false
#$Camera.make_current()
active = true
print("car entered")
func leaving_car():
var vehicle = $"."
var hidden_player = get_parent().get_node("player")
#spawn player to car HERE
if car_zone == false && Input.is_action_just_pressed("interact"):
hidden_player.active = true
active = false
#hidden_player.global_transform.origin = newLoc
I followed this tutorial: https://www.youtube.com/watch?v=7VzBHbG8sqo, and at 14:41, it shows how to do it in godot 3d, but I need it in godot 2d. He used "var newLoc = vehicle.global_transform.origin - 2*vehicle.transform.basis.x" to do that, but it doesn't work in 2d
There is a pretty simple solution for your problem, which does not even contain any math to work.
There is a Node called Position2D, which you can add to your Car Scene. Place it, where you want your character should stand after leaving the vehicle (so as a driver on the left side of your car)
Because the node is in your car scene it will move along with the car and rotate as well, so its always right next to your car.
All we need to do now is getting the global_position of the Position2D and setting the global_position of our player to it.
To make it easier to receive the global_position of the Position2D Node, we can add a function to the car which returns exactly that. Saying your Car Scene looks like this:
Vehicle
Sprite
ExitPosition (Our Position2D node. Renamed for clearity)
The function in our vehicle.gd could be like this:
func get_exit_location() -> Vector2:
return $ExitPosition.global_position
As I see it you have a variable named vehicle in your player code, which points to your car. So now, when you want to leave the car you can set the player position like this:
## Calling inside player code
global_position = vehicle.get_exit_location()
Keep in mind, that both ways (the one in the video and this one here) will make problems if there is something at the point your trying to place your player. So always check if your player can be at that position.
what is happening is that my "enemy" is not following the "player", when my player enters the detection area the "enemy" continues straight ahead (to the left).
thank you, if you understand something or need more information let me know
detection zone
enemy code
enemy code:
const EnemyDeathEffect = preload("res://Bots/EnemyDeathEffect.tscn")
export var MAX_SPEED = 60
export var ACCELERATION= 25
export var FRICTION = 700
enum {
IDLE,
WANDER,
CHASE
}
var velocity = Vector2.ZERO
var knockback = Vector2.ZERO
var state = CHASE
var path: PoolVector2Array
onready var sprite = $AnimatedSprite
onready var stats = $Stats
onready var playerDetectionZone = $PlayerDetectionZone
func _physics_process(delta):
knockback = knockback.move_toward(Vector2.ZERO, FRICTION * delta)
knockback = move_and_slide(knockback)
match state:
IDLE:
velocity = velocity.move_toward(Vector2.ZERO, FRICTION * delta)
seek_player()
WANDER:
pass
CHASE:
var player = playerDetectionZone.player
if player != null:
var direction = (player.position - global_position).normalized()
velocity = velocity.move_toward(direction * MAX_SPEED , ACCELERATION * delta)
print(direction)
else:
state = IDLE
sprite.flip_h = velocity.x > 0
velocity = move_and_slide(velocity)
func seek_player():
if playerDetectionZone.can_see_player():
state = CHASE
func _on_Hurtbox_area_entered(area):
stats.health -= area.damage
knockback = area.knockback_vector * 100
func _on_Stats_no_health():
queue_free()
var enemyDeathEffect = EnemyDeathEffect.instance()
get_parent().add_child(enemyDeathEffect)
enemyDeathEffect.global_position = global_position
I only possible culprit I see is this line:
var direction = (player.position - global_position).normalized()
Here player.position is in its parent local coordinates, while global_position as the name says is in global coordinates. You want this instead:
var direction = (player.global_position - global_position).normalized()
I see this is the way you have on the linked image.
Or if you prefer:
var direction = global_position.direction_to(player.global_position)
Aside from that, it could be that it is changing direction too slowly. Which - given the code - is the same as saying that the ACCELERATION is low, but that is for you to tweak.
I guess it is worth debugging that playerDetectionZone is getting the player, and the CHASE is working correctly.
Common approaches include using a breakpoint, or print. You already have a print for direction. Try also printing player to check the enemy is chasing what you expect it to chase.
For this particular case I also suggest to go to the run the project from the editor, and then go to the Scene panel on the Remote tab, and select the enemy. That would allow you to the properties of the enemy on real time on the Inspector. You should see the state change to CHASE (which would have the value 2), and velocity should also steadily change.
Enabling "Visible Collision Shapes" form the debug menu may also help debugging.
If it is not working, double check the playerDetectionZone has monitoring enabled. Also check that the collision_mask of the playerDetectionZone and the collision_layer of the player are correct.
I'm trying to make a 2d platformer where you spawn an object and try to jump on it in the air before it falls.
the problem is when I try to spawn the tile it doesn't spawn where Is the cursor at
it adds a relative value to the position that I don't know how to get rid of it.
you see when I try to instance a scene it takes the cursor position and viewport value into account but then something happens and I fount the object spawning way too far.
see where is the cursor at and where did the tile spawn
, same thing here
, and here
-here is how I'm grouping the nodes and scenes-
and this is the script I'm using, it's in the player1 scene
extends KinematicBody2D
#
var score : int = 0
export var speed : int = 200
export var jumpforce : int = 600
export var gravity : int = 800
onready var AB1 = preload("res://player1AB.tscn")
var vel :Vector2 = Vector2()
onready var sprite : Sprite = get_node("sprite_idile")
onready var ui : Node = get_node("/root/mainscene1/CanvasLayer/ui")
onready var audioplayer : Node = get_node("/root/mainscene1/Camera2D/audio_player")
func _physics_process(delta):
vel.x = 0
# movement inputs
if Input.is_action_pressed("move_left"):
vel.x -= speed
if Input.is_action_pressed("move_right"):
vel.x += speed
# applying the velcoty
vel = move_and_slide(vel,Vector2.UP)
#apllying gravty
vel.y += gravity * delta
#jump input
if Input.is_action_just_pressed("jump") and is_on_floor():
vel.y -= jumpforce
# where the sprite facing
if vel.x < 0:
sprite.flip_h = true
if vel.x > 0:
sprite.flip_h = false
if Input.is_action_just_pressed("restart"):
death()
func death ():
get_tree().reload_current_scene()
func collect_coin (value):
score += value
ui.set_score_text(score)
audioplayer.play_coin_sfx()
func _input(event):
if event.is_action_pressed("click"):
var ABT1 = AB1.instance()
add_child(ABT1)
var XN = null
XN = get_viewport().get_mouse_position()
ABT1.position = XN
important stuff
onready var AB1 = preload("res://player1AB.tscn")
func _input(event):
if event.is_action_pressed("click"):
var ABT1 = AB1.instance()
add_child(ABT1)
var XN = null
XN = get_viewport().get_mouse_position()
ABT1.position = XN
this the same problem in Godot form check it out if possible in case someone answered there
https://godotforums.org/discussion/27007/my-get-viewport-get-mouse-position-isnt-working-right#latest
If you don't have an extra Viewport
My first intuition is to get get_global_mouse_position and set global_position. That way you don't have to deal with any relative positioning:
ABT1.global_position = get_global_mouse_position()
Alternatively, you can check if the event is InputEventMouse, make it local with make_input_local, and get InputEventMouse.position from it:
func _input(event):
if event is InputEventMouse and event.is_action_pressed("click"):
var ABT1 = AB1.instance()
add_child(ABT1)
event = make_input_local(event)
ABT1.position = event.position
This approach would make it easier to then add touch support, because it does not rely on any function that gives you the mouse position. See my answer for Holding screen touch in godot.
If you have an extra Viewport
First of all, make sure you put your Viewport inside a ViewportContainer (otherwise it does not get input, see _input not called for a node inside a Viewport). Then we can use that ViewportContainer to get our coordinates.
Something like this:
func _input(event):
if event is InputEventMouse and event.is_action_pressed("click"):
var ABT1 = AB1.instance()
add_child(ABT1)
var container = find_parent("ViewportContainer") as ViewportContainer
if container != null:
event = container.make_input_local(event)
event = make_input_local(event)
ABT1.position = event.position
Notice there I'm using the function find_parent. It matches by name of the Node, not by type. Another approach you can try is using get_viewport().get_parent().
And yes, that should work regardless of stretch mode.
I have created the following method to outline an 2D polygon using an Line2D node (in favor of _drawing because of texturing and round jointing capabilities of the Line2D node):
func Set_Polygon_Outline(_polygon_node: Node2D, _width: int = 5, _color: Color = Color.black, _texture: Texture = null) -> void:
if _polygon_node is Polygon2D:
var _polygon: PoolVector2Array = (_polygon_node as Polygon2D).polygon
if _polygon.size() >= 3:
# Line2D node setup
var _line_node: Line2D = null
var _line_name: String = str(_polygon_node.name, "_Line")
if not _polygon_node.has_node(_line_name):
_line_node = Line2D.new() ; _line_node.name = _line_name ; _polygon_node.add_child(_line_node)
else: _line_node = _polygon_node.get_node(_line_name) as Line2D
# Line2D properties setup
if _line_node != null:
_line_node.width = _width ; _line_node.default_color = _color ; _line_node.joint_mode = Line2D.LINE_JOINT_ROUND
if _texture != null:
_line_node.texture = _texture ; _line_node.texture_mode = Line2D.LINE_TEXTURE_STRETCH
var _points: PoolVector2Array = _polygon ; _points.append(_polygon[0]) ; _line_node.points = _points
How would it be possible to replicate the round point jointing on point 0 in the same way as the other points?
The result meets expectations except on the closing points (from 4 to 0)
One approach I have tried is appending an additional point (point 1) to the _points Array. While the un-textured one looks as desired, the textured variant is slightly off on the additional line because of the two superimposing textures with alpha values making it look "bolder".
Another (very unorthodox approach) is creating two polygons: one black and one with an blur shader, using the following method:
func Set_Polygon_Shadow(_polygon_node: Node2D, _size: float = 10.0, _color: Color = Color.black) -> void:
if _polygon_node is Polygon2D:
var _polygon: PoolVector2Array = (_polygon_node as Polygon2D).polygon
if _polygon.size() >= 3:
# Shadow Polygon node setup
var _shadow_name: String = str(_polygon_node.name, "_Shadow")
if not _polygon_node.has_node(_shadow_name):
var _shadow_node: Polygon2D = Polygon2D.new()
_shadow_node.polygon = Geometry.offset_polygon_2d(_polygon, _size).front() ; _shadow_node.color = _color
_shadow_node.show_behind_parent = true ; _polygon_node.add_child(_shadow_node)
# Blur Polygon node setup
var _blur_node: Polygon2D = Polygon2D.new()
_blur_node.polygon = Geometry.offset_polygon_2d(_polygon, _size * 2.0).front()
_blur_node.material = ShaderMaterial.new()
_blur_node.material.shader = preload("res://shaders/Shader_Blur.shader")
_blur_node.material.set_shader_param("Strength", 2.0)
_blur_node.show_behind_parent = true ; _polygon_node.add_child(_blur_node)
The shader code:
shader_type canvas_item;
uniform float Strength : hint_range(0.0, 5.0);
void fragment() {COLOR = textureLod(SCREEN_TEXTURE, SCREEN_UV, Strength);}
The result looks good but I can't possibly imagine using this approach on a large number of polygons.
Thank you kindly,
Mike.
If using a Line2D is a viable solution, except for fixing the loop, then let us fix the loop.
For a Line2D to loop seamless, even with transparency, it must close in a straight segment (not a corner). And have no end caps.
Thus, I suggest to move the first point, half way between its original position and the second point. Then you add at the end the original position of the first point, following by a copy of its moved position...
Like this:
# Let o be a copy of the original first point
var o = _points[0]
# Let m be the middle of the straight segment between the first and second points
var m = o + (_points[1] - o) * 0.5
_points[0] = m # The line now starts in m, we are moving the first point forth
_points.append(o) # Since we moved the first point forth, add its original position back
_points.append(m) # Add m at the end, so it loops, in the middle of a straight segment
That should result in a Line2D that loops seamlessly.
I am currently working on an enemy spawner for a 2D arena wave spawner game in Godot.
I have an export(resource) variable that allows me to insert a spawning animation into the scene.
My question is: How do I play said animation?
I have created comments in my code that explains how it is set up. The two possible ways I think it could be solved is either by
Inserting a function where I commented it, that takes the previously determined position value and playing that animation at those coordinates. However I do not know how to play the animation as an export(resource) var.
Play the animation not as a function using the position value... but its still the same question.
Thanks!
extends Node2D
export(NodePath) var node_path
const WIDTH = 254
const HEIGHT = 126
export(Resource) var ENEMY
export(Resource) var SPAWNANIMATION
var spawnArea = Rect2()
var delta = 3
var offset = 0.5
#Creates the spawnArea and randomizes positions for the enemy to spawn
func _ready():
randomize()
spawnArea = Rect2(0, 0, WIDTH, HEIGHT)
setnextspawn()
#Spawns an Enemy at said Random position
func spawnEnemy():
var position = Vector2(randi()%WIDTH, randi()%HEIGHT)
var enemy = ENEMY.instance()
enemy.position = position #Determined position
#EnemySpawningAnim(position)
get_node(node_path).add_child(enemy)
return position
#Spawn Timer for in between each enemy spawn
func setnextspawn():
var nextTime = delta + (randf()-0.5) * 2 * offset
$Timer.wait_time = nextTime
$Timer.start()
func _on_Timer_timeout():
spawnEnemy()
setnextspawn()
#Function that takes a position to play the animation at
func EnemySpawningAnim(position):
pass
You'll need an AnimationPlayer node that you add_animation() resource when _ready(). Here's a code example:
func _ready():
$AnimationPlayer.add_animation('spawn', SPAWNANIMATION)
func EnemySpawningAnim(position):
# ... logic to handle position
$AnimationPlayer.play('spawn')