Random picture picker

Firstly you might need to think of more like random 'card' picker rather than just a picture or texture. Semantics I know but it's good to think about it as game concept rather than a literal asset concept.

So with that said how about creating this:

 using System.Collections.Generic;
 using UnityEngine;
 
 
 public enum GameCardType
 {
     MOVEMENT,
     OTHER_TYPES_HERE,
     ENUM_COUNT
 }
 
 
 
 public class GameCardGame : MonoBehaviour
 {
     public bool m_playGame;
     public Texture2D[] m_cardTextures; // assign matching textures to this property
     public GUITexture m_cardGUITexture;
     
     //Assigned random card
     private GameCardType m_curType;
     
     //Picks a random card type
     static GameCardType GetRandom()
     {
         return (GameCardType)Random.Range(0, (int)GameCardType.ENUM_COUNT);
     }
     
     //Movement code
     void DoMovementType()
     {
         Debug.Log("Movement code!");
     }
     
     void DoOtherType()
     {
         Debug.Log("Other type code!");
         
     }
     
     //Plays the game
     void PlayGame()    
     {
         // Get a random card
         m_curType = GetRandom();
         
         //if not null and texture exists - assign the selected type to GUITexture
         if(m_cardTextures != null && (int)m_curType < m_cardTextures.Length
            && m_cardGUITexture != null)
             m_cardGUITexture.texture = m_cardTextures[(int)m_curType];
         
         
         // Do random card logic
         switch (m_curType)
         {
             case(GameCardType.MOVEMENT):
                 DoMovementType();
                 break;
             case(GameCardType.OTHER_TYPES_HERE):
                 DoOtherType();
                 break;
             default:
                 Debug.LogWarning("No method specified for card type!");
                 break;
         }
         
     }
     
     
     //Update loop to catch the m_playGame bool trigger
     void Update()
     {
         if(m_playGame)
             PlayGame();
         m_playGame = false;
     }
 
 }