Styjun

I'd like to be able to call a subroutine with an instance of a class passed to it and then use a string of the name of the instance to affect which tkinter label is updated.

I know this is an oddly specific and convoluted way of asking something that's probably quite simple but I'm bad at articulating what I need into google.

I'm making a fallout inspired game and I'd like to let the player choose an enemy to shoot at and update their health meter. So far I have all the maths behind the shooting subroutine down, I just don't know how to target the correct label widget at the end

from tkinter import *
Root = Tk()

PlrWeapon = ["Pipe Revolver Rifle",6,5,0]

class Raider:
 Species = "Human"
 def __init__(self, Name, Level, MaxHealth, Health, Alive, Unique, Weapon, Armour):
 self.Name = Name
 self.Level = Level
 self.MaxHealth = MaxHealth
 self.Health = Health
 self.Alive = Alive
 self.Unique = Unique
 self.Weapon = Weapon
 self.Armour = Armour

def Shoot(self):
 Damage = 0
 for i in range(1,4):
 Difference = PlrWeapon[i] - self.Armour[i]
 if Difference >= 0:
 Damage = Damage + Difference
 self.Health = self.Health - Damage
 if self.Health <= 0:
 self.Alive = False

Enemy1 = Raider("Tessa",
 5,
 50,
 50,
 True,
 False,
 ["Pipe Pistol",3,2,0],
 ["Armourless",0,0,0])

Enemy2 = Raider("Bobby",
 5,
 50,
 50,
 True,
 False,
 ["Pipe Rifle",5,4,0],
 ["Leather",2,3,1])

Shoot(Enemy1)

Enemy1Name = Label(Root, text=Enemy1.Name)
Enemy1Name.grid(row=0, column=0)
Enemy1Health = Label(Root, text=Enemy1.Health)
Enemy1Health.grid(row=0, column=1)

Enemy2Name = Label(Root, text=Enemy2.Name)
Enemy2Name.grid(row=1, column=0)
Enemy2Health = Label(Root, text=Enemy2.Health)
Enemy2Health.grid(row=1, column=1)

Root.mainloop()

ideally at the end of the Shoot() routine there would be a part that acted like this

def Shoot(self):
 Damage = 0
 for i in range(1,4):
 Difference = PlrWeapon[i] - self.Armour[i]
 if Difference >= 0:
 Damage = Damage + Difference
 self.Health = self.Health - Damage
 if self.Health <= 0:
 self.Alive = False

 ## start of wishful thinking ##

 str(self)+"Health".config(text=self.Health)

If you understand what I'm trying to communicate and have a solution I would really appreciate the help. Thanks.

If I understood you correctly, you want to change the health label related to the Raider object passed to Shoot method.

Here is a solution which can work, but I am not sure if this is a suggested way of going as you have to be very careful.

def Shoot(self, win):
 Damage = 0
 for i in range(1,4):
 Difference = PlrWeapon[i] - self.Armour[i]
 if Difference >= 0:
 Damage = Damage + Difference
 self.Health = self.Health - Damage
 if self.Health <= 0:
 self.Alive = False
 win.nametowidget('.health'.format(self.Name)).config(text=self.Health)

Enemy1Name = Label(Root, text=Enemy1.Name, name='name'+Enemy1.Name)
Enemy1Name.grid(row=0, column=0)
Enemy1Health = Label(Root, text=Enemy1.Health, name='health'+Enemy1.Name)
Enemy1Health.grid(row=0, column=1)

Enemy2Name = Label(Root, text=Enemy2.Name, name='name'+Enemy2.Name)
Enemy2Name.grid(row=1, column=0)
Enemy2Health = Label(Root, text=Enemy2.Health, name='health'+Enemy2.Name)
Enemy2Health.grid(row=1, column=1)

The widgets are stored as a tree structure by tkinter, where your Tk() window is root represented by .. Then its children will be presented as .unique_widget1_id and children of widget1 like .unique_widget1_id.unique_widget2_id. By default, tkinter creates ids like .140343920750152 which can be seen through widget.__str__() method.

But you can add user-defined names to widgets when creating them as shown in this solution(Please be sure that every widget have a unique name to avoid issues. If you create two widgets with same name then it will create only first widget and second one will be just a reference to the same widget). Then you can call nametowidget() method on any widget/window and provide relative/absolute path to get widget object(and perform operations on widget).

Let me know if you have questions.

PS: Widget name can not start from upper-case letter.