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Asked By
Mrpaolosarino
I’m creating a state machine and I’ve created a func:
var State = {
"Idle" : $Idle
}
var Current_State
func ready():
test_change_state(Current_State,State,"Idle")
func physics_process(delta):
print(Current_state)
func test_change_state(current_state,state_name,new_state):
current_state = state_name[new_state]
if you use print(current_state.name," ",state_name, " ", new_state)
you will get
Idle {Idle:[Node:1252]} Idle
Current State in physics process prints as a null why my test change state doesn’t change the variable Current State? is there something that I’ve been missing on?
Because in test_change_state() You redefine in-function argument instead of Your Current_state variable. Capital C and You have fixed it
yep, that’s true. I want to make the argument in function general because I’m going to make another state machine prior to the previous one. If I do this, then my code will work but if I try to add another state machine, I’ll have to create another function of these which makes it a hassle
Mrpaolosarino | 2021-03-28 12:52
from what I’ve heard, creating parameters inside a function will create another variable meaning, I think that’s the problem why in the physics it became null
Mrpaolosarino | 2021-03-28 12:55
Parameter created inside function never leaves this function. Yours is not even created, it is modified argument passed to this function earlier. You have to use your Current_state variable to get it out of this function, or finish function with return State_name[new_state]. What do you mean you have to create more functions for more states? I don’t see how it is necessary
Inces | 2021-03-28 13:04
The state machine above is for the player. It handles walking etc. What I will do is I will create another state machine that handles if the player picked an object or not. And to do that, I need a universal change state function, that changes both Current_state and my future hand_state. either way I think I solved the problem, thanks bro
This is for people who will find the similar problem
Functions create another variable if you create a parameter. Meaning, the function above creates another ‘current_state’ instead of directly changing the ‘Current_state’
I think this is a dumb mistake lol and here’s my solution:
func test_change_state(current_state,state_name,new_state,type):
current_state = state_name[new_state]
if type == "Player":
Current_state = current_state
elif type == "Items":
Item_Current_state = current_state
