This week, we worked to make the “Gem Found” prefab that we created last week actually appear when we found a gem, and disappear after it’s played it’s animation.
A Script for Our ‘Gem Found’ Prefab
We want a simple script, called GemFoundMessage.cs, that will set the message on the prefab’s canvas to match the gem we just found:
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using TMPro;
public class GemFoundMessage : MonoBehaviour
{
public TMP_Text Text;
public Transform GemHolder;
public void SetGemDefinition(GemDefinition gd)
{
string message = string.Format("You found a {0} spirit gem!",
gd.name);
Text.text = message;
}
}
We attach this to the root of of our prefab. This script contains a single function we can call to set the text based on the gem definition and a couple of properties. One property is the text we need to update, the other is the location where we’re going to spawn a gem model to have it animate.
Making the GemFound Prefab Clean Itself Up
We already have a SelfDestruct script. We add it to our GemFound Prefab and give it a time of 4 seconds; this is enough time for our animation to finish.
Updating PlayerDig
We now need to update PlayerDig.cs. There are a few things to do:
- After spawning our digging animation, we want to wait three seconds and then check to see if we’ve found a gem.
- We look to see if the nearest gem is within a certain distance (the larger we make this the less precise the player will need to be)
- Assuming there is a gem there, find out what type of a gem it is
- Add it to our inventory [We’ll need to wait to do this, as we don’t have our inventory written yet]
- Create a GemFound prefab
- Inform it what gem type we have
- Create a gem as part of the GemFound
First we add the line Invoke(“DigResult”, 3); this to the OnDig() function as shown:
:
if (Physics.Raycast(rayPos, Vector3.down, out hitInfo, 10.0f, lm))
{
Instantiate(DiggingPrefab, hitInfo.point,
DiggingPrefab.transform.rotation);
Invoke("DigResult", 3);
}
:
We then add the DigResult() function:
private void DigResult()
{
float distToNearest = (ItemScatterer.nearestItem.transform.position -
transform.position).magnitude;
if (distToNearest > MaxDistToItem)
return;
// Capture the gem definition
RandomGem rg = ItemScatterer.nearestItem.GetComponent<RandomGem>();
GemDefinition gd = rg.GemDefinition;
// Remove the item from ItemScatterer
Destroy(ItemScatterer.nearestItem);
ItemScatterer.nearestItem = null;
// TODO: Add to our inventory
// Spawn the Gem Found Prefab to let the player know what they found
GameObject gfb = Instantiate(GemFoundPrefab, GemFoundLocation);
GemFoundMessage gfm = gfb.GetComponent<GemFoundMessage>();
GameObject gem = Instantiate(gd.Prefab, gfm.GemHolder);
gfm.SetGemDefinition(gd);
}
This does everything we talked about above.
Basic UI
We took a short look at simple UI layout options as preparation for building the UI next session.
Code Download
The code for this week’s project is on our GitHub, as always.
CoderDojo Athenry 