Add a VFX Skin Property for Randomization

Noisysundae · Mar 23, 2022 · b01946e · b01946e
1 parent d59fca1
commit b01946e
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Showing 4 changed files with 38 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -10,6 +10,12 @@ Refer to the [Releases](https://github.com/Noisysundae/techmania-ns/releases) se
 
 ### New Features
 
+* Sprite Sheet Property: `randomOrientationSeed`
+  * VFX Skins Only
+  * If Set, Randomly Rotates and Flips Each VFX Sprite Layer Instance
+  * Possible Values: Any Positive Integer
+    * If the same number is shared between different layers, they will be rotated / flipped by the same amount.
+    * Default Value: -1 (Not Randomized)
 * Sprite Sheet Property: `directionTracking`
   * Note Skins Only
   * Possible Values: `"none"`, `"mirror"`, and `"rotate"`

diff --git a/TECHMANIA/Assets/Scripts/Components/Game Scene/BaseBga.cs b/TECHMANIA/Assets/Scripts/Components/Game Scene/BaseBga.cs
@@ -64,7 +64,7 @@ public static void Forward(string guid = "")
 					{
 						hash += b;
 					}
-					rand = new Random(hash);
+					rand = new Random(hash + (int) System.DateTime.Now.Ticks);
 					currentIndex = rand.Next(length);
 					break;
 				case PlaybackMode.Random:

diff --git a/TECHMANIA/Assets/Scripts/Components/Game Scene/VFXDrawer.cs b/TECHMANIA/Assets/Scripts/Components/Game Scene/VFXDrawer.cs
@@ -3,6 +3,8 @@
 using UnityEngine;
 using UnityEngine.UI;
 
+using Random = System.Random;
+
 // This would be called VFXRenderer, but apparently
 // "Script 'VFXRenderer' has the same name as built-in Unity component."
 //
@@ -18,10 +20,33 @@ public class VFXDrawer : MonoBehaviour
     private Image image;
     private float startTime;
 
+    // For random orientation seed reference
+    private static int baseRandomSeed;
+
+    private void ModifyTransform (Transform transform,
+        SpriteSheet spriteSheet,
+        Vector3 position)
+    {
+        if (spriteSheet.randomOrientationSeed >= 0)
+        {
+            Random rand = new Random(
+                baseRandomSeed
+                + spriteSheet.randomOrientationSeed
+                + (int) position.x * 1000
+                + (int) position.y * 1000);
+            transform.Rotate(0, 0, (float) rand.Next());
+
+            float flipX = rand.Next() % 2 == 0 ? -1f: 1f;
+            float flipY = rand.Next() % 2 == 0 ? -1f: 1f;
+            transform.localScale.Scale(new Vector3(flipX, flipY, 1f));
+        }
+        transform.position = position;
+    }
+
     public void Initialize(Vector3 position,
         SpriteSheet spriteSheet, bool loop)
     {
-        transform.position = position;
+        ModifyTransform(transform, spriteSheet, position);
         this.spriteSheet = spriteSheet;
         this.loop = loop;
         if (spriteSheet.additiveShader)
@@ -36,6 +61,7 @@ void Start()
         rect = GetComponent<RectTransform>();
         image = GetComponent<Image>();
         startTime = Game.Time;
+        baseRandomSeed = (int) System.DateTime.Now.Ticks;
 
         if (spriteSheet.sprites == null ||
             spriteSheet.sprites.Count == 0)

diff --git a/TECHMANIA/Assets/Scripts/Serializable/Skin.cs b/TECHMANIA/Assets/Scripts/Serializable/Skin.cs
@@ -26,7 +26,8 @@ public static class DirectionTracking
         public const string Mirror = "mirror";
         public const string Rotate = "rotate";
     }
-    public string directionTracking = null;  // Note skin, non-trails only
+    public string directionTracking;  // Note skin, non-trails only
+    public int randomOrientationSeed;  // VFX skin
 
     [NonSerialized]  // Loaded at runtime
     public Texture2D texture;
@@ -46,7 +47,8 @@ public SpriteSheet()
         speed = 1f;
         additiveShader = false;
 
-        // directionTracking = DirectionTracking.None;
+        directionTracking = null;
+        randomOrientationSeed = -1;
     }
 
     // Call after loading texture.