I've just started learning about design patterns, specifically state machines, and while I get the concept, I'm really struggling to put it into practice within my code. I'm working on a project using Pygame where I have a simple terminal program that simulates conversations with two NPCs. When a player interacts with an NPC, they can ask for the NPC's name or occupation. However, I'm not satisfied with how I've structured my code so far. I've got a basic implementation set up, but I feel like there's a more effective way to manage it. I'd love some guidance or tips on how to better implement the state machine concept to interrogate these NPCs. Here's a snippet of my code for context:
```python
import sys
class NPC:
def __init__(self, name, occupation):
self.name = name
self.occupation = occupation
npc1 = NPC("Amy", "I am a bank teller")
npc2 = NPC("John", "I am a plumber")
player = input("Select an NPC to interrogate: 1 or 2; q for Quit: ").lower()
if player == "1":
interrogateNPC = int(input("Enter 1 for [NAME] or 2 for [OCCUPATION]: "))
if interrogateNPC == 1:
print(npc1.name)
elif interrogateNPC == 2:
print(npc1.occupation)
else:
print("Invalid Input")
elif player == "2":
interrogateNPC = int(input("Enter 1 for [NAME] or 2 for [OCCUPATION]: "))
if interrogateNPC == 1:
print(npc2.name)
elif interrogateNPC == 2:
print(npc2.occupation)
else:
print("Invalid Input")
elif player == "q":
sys.exit()
else:
print("Not an NPC")
```
Any assistance would be greatly appreciated!
2 Answers
I totally understand your struggle with state machines; they can be tricky to implement! When I first started, I found it helpful to begin with a super simple example, like just managing the basic animations for a player character (idle, walking, jumping). If you haven't already, definitely check out some YouTube tutorials on state machines; they break it down really well. Plus, if you share specific code challenges you're facing here, you might get some detailed advice from people experienced with game development!
It sounds like you're on the right track, but you might want to simplify how you're accessing your NPCs. Instead of having npc1 and npc2 as separate variables, consider putting them in a list. You could store the NPCs as entries in a list, which makes it easier to loop through and access based on player input. For example:
```python
npcList = [npc1, npc2]
```
Then, if the player selects '1', just use that to index into the list. This approach can clean up your code a lot!
That's a great idea! I was thinking about using a list too. I might even use a dictionary to also store dialogue alongside the NPCs. Thanks for the tip!
Thanks for the suggestion! I’m actually watching some tutorials right now to get a clearer understanding. I posted my code snippet here hoping someone might give feedback on how I can better structure my state pattern implementation.