From 0b295af56b1a0ba60cec920de2837dfe52724830 Mon Sep 17 00:00:00 2001
From: henriquenakashima <henrique.nakashima@gmail.com>
Date: Mon, 28 Sep 2020 23:07:12 -0400
Subject: [PATCH] Implement scene transition

---
 Assets/Story/SceneId.cs                     |  2 ++
 Assets/Story/Scenes/Scene_Prologue_First.cs |  2 +-
 Assets/Story/StoryBox.cs                    |  2 --
 Assets/Story/StoryController.cs             | 25 ++++++++++++---------
 Assets/Story/StoryDisplay.cs                |  2 --
 Assets/Story/StoryScene.cs                  | 13 +++++++++++
 6 files changed, 30 insertions(+), 16 deletions(-)

diff --git a/Assets/Story/SceneId.cs b/Assets/Story/SceneId.cs
index 0b9635b..3183b1a 100644
--- a/Assets/Story/SceneId.cs
+++ b/Assets/Story/SceneId.cs
@@ -4,6 +4,8 @@ using UnityEngine;
 
 public enum SceneId
 {
+    None,
+    
     Prologue_First,
     Chapter1_Cave,
 }
diff --git a/Assets/Story/Scenes/Scene_Prologue_First.cs b/Assets/Story/Scenes/Scene_Prologue_First.cs
index d6398b7..30eb162 100644
--- a/Assets/Story/Scenes/Scene_Prologue_First.cs
+++ b/Assets/Story/Scenes/Scene_Prologue_First.cs
@@ -27,6 +27,6 @@ public class Scene_Prologue_First: StoryScene {
             DialogPosition.Right);
         yield return new WaitForSeconds(2f);
 
-        // TODO: Transition to Chapter 1.
+        this.SetNextSceneId(SceneId.Chapter1_Cave);
     }
 }
diff --git a/Assets/Story/StoryBox.cs b/Assets/Story/StoryBox.cs
index 1bfd5fd..fca75fd 100644
--- a/Assets/Story/StoryBox.cs
+++ b/Assets/Story/StoryBox.cs
@@ -12,12 +12,10 @@ public class StoryBox : MonoBehaviour {
     private bool clicked;
 
     void Start() {
-        Debug.Log("StoryBox Start");
         this.button.onClick.AddListener(NotifyOnClick);
     }
 
     public IEnumerator Display(string message) {
-        Debug.Log("StoryBox Display");
         this.gameObject.SetActive(true);
         this.clicked = false;
         this.text.text = message;
diff --git a/Assets/Story/StoryController.cs b/Assets/Story/StoryController.cs
index 02de8a6..735ffe5 100644
--- a/Assets/Story/StoryController.cs
+++ b/Assets/Story/StoryController.cs
@@ -6,19 +6,22 @@ public class StoryController : MonoBehaviour
 {
     public StoryDisplay storyDisplay;
 
-    // Start is called before the first frame update
-    void Start()
-    {
-        // TODO: Read which scene should be loaded.
-        //StoryScene scene = StorySceneDatabase.Load(SceneId.Chapter1_Cave);
-        StoryScene scene = StorySceneDatabase.Load(SceneId.Prologue_First);
+    private SceneId nextSceneId;
 
-        StartCoroutine(scene.Play(this.storyDisplay));
+    void Start() {
+        // TODO: Read which scene should be loaded.
+        this.nextSceneId = SceneId.Prologue_First;
+
+        StartCoroutine(this.PlayScenes());
     }
 
-    // Update is called once per frame
-    void Update()
-    {
-        
+    private IEnumerator PlayScenes() {
+        while (true) {
+            SceneId id = this.nextSceneId;
+            this.nextSceneId = SceneId.None;
+            StoryScene scene = StorySceneDatabase.Load(id);
+            yield return scene.Play(this.storyDisplay);
+            this.nextSceneId = scene.GetNextSceneId();
+        }
     }
 }
diff --git a/Assets/Story/StoryDisplay.cs b/Assets/Story/StoryDisplay.cs
index fbdead4..8b63296 100644
--- a/Assets/Story/StoryDisplay.cs
+++ b/Assets/Story/StoryDisplay.cs
@@ -16,7 +16,6 @@ public class StoryDisplay : MonoBehaviour
     private StoryBox storyBoxLeft;
 
     void Awake() {
-        Debug.Log("StoryDisplay Awake");
         this.storyBoxLeft = GameObject.Instantiate(this.storyBox, this.uiCanvas.transform);
         RectTransform rt = this.storyBoxLeft.GetComponent<RectTransform>();
         rt.anchorMin = new Vector2(0, 0.5f);
@@ -28,7 +27,6 @@ public class StoryDisplay : MonoBehaviour
     }
 
     public IEnumerator DisplayText(string message, DialogPosition position) {
-        Debug.Log("DisplayText " + message);
         if (position == DialogPosition.Left) {
             yield return this.storyBoxLeft.Display(message);
         } else {
diff --git a/Assets/Story/StoryScene.cs b/Assets/Story/StoryScene.cs
index 50e5d41..91cf285 100644
--- a/Assets/Story/StoryScene.cs
+++ b/Assets/Story/StoryScene.cs
@@ -4,5 +4,18 @@ using UnityEngine;
 
 public abstract class StoryScene
 {
+    private SceneId nextSceneId = SceneId.None;
+
     public abstract IEnumerator Play(StoryDisplay storyDisplay);
+
+    protected void SetNextSceneId(SceneId id) {
+        this.nextSceneId = id;
+    }
+
+    public SceneId GetNextSceneId() {
+        if (nextSceneId == SceneId.None) {
+            throw new System.InvalidOperationException("nextSceneId is None");
+        }
+        return this.nextSceneId;
+    }
 }