每当我跳跃时，如何阻止我的角色向右跳跃？

问题描述

我正在开发一款 2d 横向卷轴游戏，在尝试对玩家角色进行射击时遇到了问题，以前是在跳跃时射击时不会射击，但现在每当我按下跳跃键时即使我没有激活方向键，玩家也会向右跳

这是代码

extends KinematicBody2D

const GraviTY = 20
const SPEED = 200
const JUMP_HIGHT = -550
const UP = Vector2(0,-1)

const SHOOT = preload("res://shoot.tscn")

var motion = Vector2()
var on_ground = false
var is_attacking = false

# warning-ignore:unused_argument
func _physics_process(delta: float) -> void:
    motion.y += GraviTY

    if Input.is_action_pressed("right") || is_on_floor() == false:
        if is_attacking == false:
            motion.x = SPEED
            if is_attacking == false:
                $Sprite.flip_h = false
                $Sprite.play("run")
                if sign($Position2D.position.x) == -1:
                    $Position2D.position.x *= -1

    elif Input.is_action_pressed("left") || is_on_floor() == false:
        if is_attacking == false :
            motion.x = -SPEED
            if is_attacking == false:
                $Sprite.flip_h = true
                $Sprite.play("run")
                if sign($Position2D.position.x) == 1:
                    $Position2D.position.x *= -1

    else : 
        if on_ground == true && is_attacking == false :
            $Sprite.play("idle")
            motion.x = 0

    
    if Input.is_action_just_pressed("jump"):
        if is_attacking == false :
            if on_ground == true :
                    motion.y = JUMP_HIGHT
                    on_ground = false

    if is_on_floor():
        if on_ground == false :
            is_attacking = false
        on_ground = true
    else :
        if is_attacking == false :
            on_ground = false
            if motion.y < 0 :
                $Sprite.play("jump")
            else :
                $Sprite.play("fall")

    if Input.is_action_just_pressed("shoot") && is_attacking == false:
        if is_on_floor() :
            motion.x = 0
        is_attacking = true
        $Sprite.play("attack")
        var shoot = SHOOT.instance()
        if sign($Position2D.position.x) == 1 :
            shoot.set_shoot_direction(1)
        else:
            shoot.set_shoot_direction(-1)
        
        get_parent().add_child(shoot)
        shoot.position = $Position2D.global_position
        
    motion = move_and_slide(motion,UP)
    

func _on_Sprite_animation_finished() -> void:
    is_attacking = false

解决方法

不确定这是否会有所帮助，但对于我的代码，我必须将 and ev.pressed and !ev.is_echo() 添加到我的所有 if Input 语句中。不太确定为什么，但它阻止了程序随机认为我试图按下我不想按下的键。

我认为您从一开始就走错了方向，而且我还没有在教程中看到任何人这样做。您将输入检查与状态检查和移动重复进行。由于您是新手，您需要多次从头开始编写平台游戏代码以进行试验并了解代码应该如何流动。分开做：

# don't use $ for nodes you call often save reference in variable (I'm guessing it's AnimatedSprite)
var sprite:AnimatedSprite = $Sprite
var dir:float = 0.0 #used for movement and sprite flipping
#Limit your code to physics process only for physics related logic
func _physics_process(delta:float)->void:
    # get direction input
    # math trick to get value -1 to 1 to know how strong go which direction
    dir = Input.get_action_strength("move_right") - 
    Input.get_action_strength("move_left")

    #ground check - call function once and use variable
    is_grounded = is_on_floor()

    # apply speed(use dir to give direction)
    motion.x = SPEED * dir

    # apply gravity
    if !is_grounded:
        motion.y += GRAVITY * delta
    elif Input.is_action_just_pressed("jump"):
        motion.y = JUMP_HIGHT

    # apply movement
    motion = move_and_slide(motion,Vector2.UP)

# use process for sprites
func _process(delta:float)->void:
    #check if direction is not close to 0
    if abs(dir) > 0.001:
        if dir > 0:
            sprite.h_flip = false
        else:
            sprite.h_flip = true
    
    #state check for sprites
    if is_grounded:
        if abs(dir) > 0.001:
            sprite.play("run")
        else:
            sprite.play("idle")
    else:
        if motion.y < 0.0:
            sprite.play("jump")
        else:
            sprite.play("fall")

这将是实施射击的更好起点。看起来你在射击时停止了移动，所以你可以在应用速度之前中断dir。

   if is_shooting && is_grounded:
       dir = 0.0

gdscript godot