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Asked By | talupoeg |
Hello!
I’m new to game development, but have done some tutorials for 2D platformer and top down game.
I’m trying to implement a point-and-click behavior with collision objects. The main point and click movement flow is described nicely here:
I’m using it in a similar way with move_and_slide, however when bringing in some collision objects the KinematicBody2D still slides on a collision object if colliding it with a definitive size greater or lower than 90 deg angle. I’d like the player(KinematicBody2D) to stop or slide it across the colliding body(wall - StaticBody2D) without slowing down gradually.
Currently I’m detecting a move_and_slide collision and forcing the KinematicBody2D to move_and_collide which nicely stop the player but I’m unable to get the player away from the collision object. It’s just snapped to it and can’t make it back to move.
How to make a player back to move after move_and_collide stopped it with a point and click moves used in my script? I tried it with setting a new position but seems I don’t know how to use the ‘set_position(value)’ in Node2D
Here’s my script:
extends KinematicBody2D
var speed = 200
# original starting point for character
var targetPos = Vector2(980, 1200)
var velocity = Vector2()
var distance = 0
var floor_normal = Vector2(0, 0)
var max_bounces = 0
var collision
var collided = false
func _input(event):
if event.is_action_pressed('click'):
targetPos = get_global_mouse_position()
distance = position.distance_to(targetPos)
func _physics_process(delta):
velocity = (targetPos - position).normalized() * speed
movePlayer(delta)
func movePlayer(delta):
for i in get_slide_count():
collision = get_slide_collision(0)
if get_slide_count() > 0:
collided = true
else:
collided = false
if collided:
move_and_collide(velocity * 0 * delta)
var newPosition = Vector2(668, 1031)
# error
# set_position(newPosition)
# make it move to a target position
elif (targetPos - position).length() > 5:
move_and_slide(velocity, floor_normal, true)
# need to stop movement if clicking too close to a character
elif distance < 5:
move_and_slide(velocity * 0, floor_normal, true)
Ok, I know it’s a noob question, but I haven’t found the good way to solve this.
Anyhow now I’ve implemented a solution where I just set the player’s target position to current position of a player when collision (actually a slide) occurred.
It kind of does the trick but for point and click game it still feels a bit weird. Anyone can comment on that?
Modified script (the part where it says 'if slided: ’ ):
extends KinematicBody2D
var speed = 200
# original starting point for character
var targetPos = Vector2(980, 1200)
var velocity = Vector2()
var distance = 0
var floor_normal = Vector2(0, 0)
var max_bounces = 0
var collision
var slided = false
func _input(event):
if event.is_action_pressed('click'):
targetPos = get_global_mouse_position()
distance = position.distance_to(targetPos)
func _physics_process(delta):
velocity = (targetPos - position).normalized() * speed
movePlayer(delta)
func movePlayer(delta):
for i in get_slide_count():
# last slide detected
collision = get_slide_collision(0)
if get_slide_count() > 0:
slided = true
else:
slided = false
if slided:
targetPos = position
move_and_slide(velocity, floor_normal, true)
# make it move to a target position
elif (targetPos - position).length() > 5:
move_and_slide(velocity, floor_normal, true)
# need to stop movement if clicking too close to a character
elif distance < 5:
move_and_slide(velocity * 0, floor_normal, true)
talupoeg | 2019-05-23 15:25
You can just assign a value to the position variable:
position = Vector2(200,100)
position.x += 200
position.y = 10
etc.
Jowan-Spooner | 2019-05-23 15:34
Thanks!
Seems to do the trick yes. I have found that for this current point and click solution it still better to reassign current position to target position and still use move_and_slide because with point and click mechanics you mostly are clicking on collisions to move the player.
talupoeg | 2019-05-24 09:29
KidsCanCode has made this explanation of KinematicBody2dMovement (move_and_slide and move_and_collide) that is pretty good. Just if you are looking for a deeper explanation and custom reactions for collisions.
Jowan-Spooner | 2019-05-24 09:34