about-codes.md

About codes of Pie Planet

1. NPC Image size
2. Structure of conversation window
3. Small tips
4. Errors

NPC Image size

• Check Preserve Aspect in Image option
• Make a same size for every images in conversation window

Structure of conversation window

• In TalkManager, each sentence is organized as "<character name>;<sentence>;<character image index>"
• Use TalkManager in GameManager with .Split(';')[index]

  talkName.text = talkData.Split(';')[0];
  portraitImg.sprite = talkManager.GetPortrait(id, int.Parse(talkData.Split(';')[2]));

• Make choices by clicking the question mark
  • Use collider names for each conversation

          else if (hit.collider.name == "su25")
          {
              Destroy(hit.collider);
              Talk(2500);
              talkPanel.SetActive(isAction);
              question25_4 = true;
              whereAmI = 2500;
              hit.collider.GetComponent<Renderer>().material.color = new Color(1, 1, 1, 0);
          }

  • After the codes above, the codes below execute because question25_4 is true

            else if (question25_4)
            {
                Talk(whereAmI);
                talkPanel.SetActive(isAction);
                
                //choices
                if (talkIndex == 2 && typeEffect.onSelect)
                {
                    question25_4 = false;
                    qu25cho1.SetActive(true);
                    qu25cho2.SetActive(true);
                }
            }

  • Functions for two choices - use talkIndex

      public void qu25fir()
      {
          talkIndex += 1;
          Talk(whereAmI);
          talkPanel.SetActive(isAction);
          qu25cho1.SetActive(false);
          qu25cho2.SetActive(false);
          question25_4 = true;
      }
    
      public void qu25sec()
      {
          talkIndex += 2;
          Talk(whereAmI);
          talkPanel.SetActive(isAction);
          qu25cho1.SetActive(false);
          qu25cho2.SetActive(false);
          question25_4 = true;
      }

• Use ObjData
  • Do not have to check collider names
  • Destory and change question marks to transparent for invisibility
  • Fix null error and use second to decide the flow

        void Update()
        {
            if (Input.GetMouseButtonDown(0))
            {
                Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
                RaycastHit2D hit = Physics2D.GetRayIntersection(ray, Mathf.Infinity);
                ObjData objData;
    
                if (second)
                {
                    Talk(whereAmI);
                    talkPanel.SetActive(isAction);
                }
    
            if (hit.collider != null)
                {
                    //Teleport
                    if (hit.collider.name == "enter1")
                    {
                        player.Teleport(-16.52f, -18.210f);
                    }
    
                    else if (hit.collider.name == "out1")
                    {
                        player.Teleport(-16.52f, -1.829295f);
                    }
    
                    //Talk
                    else if (hit.collider.GetComponent<ObjData>() != null)
                    {
                        objData = hit.collider.GetComponent<ObjData>();
    
                        if (objData.isObject)
                        {
                            portraitImg.color = new Color(1, 1, 1, 0);
                            whereAmI = objData.id;
                            ObjExplain(whereAmI);
                            talkPanel.SetActive(isAction);
                            second = true;
                        }
    
                        else
                        {
                            Debug.Log(objData.id);
                            portraitImg.color = new Color(1, 1, 1, 1);
                            Destroy(hit.collider);
                            whereAmI = objData.id;
                            Talk(whereAmI);
                            talkPanel.SetActive(isAction);
                            hit.collider.GetComponent<Renderer>().material.color = new Color(1, 1, 1, 0);
                            second = true;
                        }
                    }

Small tips

• Is GameObject on? <game object name>.activeSelf
• Mouseover events
  • Script for non-button

    using System.Collections;
    using System.Collections.Generic;
    using System.Data.SqlTypes;
    using UnityEngine;
    
    public class OvertheMouse : MonoBehaviour
    {
        public GameObject thisObject;
    
        void OnMouseEnter()
        {
            thisObject.SetActive(true);
        }
    
        void OnMouseOver()
        {
            thisObject.SetActive(true);
        }
    
        void OnMouseExit()
        {
            thisObject.SetActive(false);
        }
    }

  • For buttons - add Event Trigger under Button option

Errors

• unsigned reference exception
  • Check the connection inside Unity
  • There must be None
• If button click doesn't work
  • Make a new Canvas
  • Do not delete EventSystem
• If UI doesn't fit your screen
  • Inside Scene, Canvas → Canvas Scaler → Change UI Scale Mode to Scale With Screen Size