forward jump in KinematicBody 3d

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:information_source: Attention Topic was automatically imported from the old Question2Answer platform.
:bust_in_silhouette: Asked By Ash33

hello, i want to achieve forward jump by pressing one key i.e. w key.

func _process(delta):
var target_dir = Vector3(0,0,0)
if Input.is_action_pressed("forward") and is_on_floor():
	target_dir.z += 1
	target_dir.y = jum_force
if Input.is_action_pressed("left") and is_on_floor():
	target_dir.x += 1
	target_dir.y = jum_force
if Input.is_action_pressed("right") and is_on_floor():
	target_dir.x -= 1
	target_dir.y = jum_force
if Input.is_action_just_pressed("space") and is_on_floor():
	vel.y = jum_force

target_dir = target_dir.normalized()

vel.x = lerp(vel.x , target_dir.x * speed, accel * delta )
vel.z = lerp(vel.z , target_dir.z * speed, accel * delta )
vel.y = lerp(vel.y , target_dir.y * speed, accel * delta )

vel.y += grav * delta
if vel.y < max_grav:
	vel.y = max_grav

move_and_slide(vel, Vector3(0, 1, 0))

if is_on_floor() and vel.y < 0:
	vel.y = 0

this is my code. on space it works fine but player jump on it current position and on click of w it go forward with small jumps
thanks in advance if u show interest and try to analyze my code

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