Improved client render performance (only query nearby entities every 3rd call)

CHANGELOG.md

@@ -15,6 +15,7 @@ All notable changes to **CreatureChat** are documented in this file. The format
 
 ### Changed
 - Chat Bubble rendering & interacting is now dependent on whitelist / blacklist config
+- Improved client render performance (only query nearby entities every 3rd call)
 - Fixed a **crash with FLEE** when non-path aware entities (i.e. Ghast) attempted to flee.
 - Fixed certain behaviors from colliding with others (i.e. mutual exclusive ones)
 - Updated README.md with new video thumbnail, and simplified text, added spoiler to install instructions

src/client/java/com/owlmaddie/ui/BubbleRenderer.java

@@ -47,6 +47,8 @@ public class BubbleRenderer {
     public static int overlay = OverlayTexture.DEFAULT_UV;
     public static List<String> whitelist = new ArrayList<>();
     public static List<String> blacklist = new ArrayList<>();
+    private static int queryEntityDataCount = 0;
+    private static List<Entity> relevantEntities;
 
     public static void drawTextBubbleBackground(String base_name, MatrixStack matrices, float x, float y, float width, float height, int friendship) {
         // Set shader & texture
@@ -351,11 +353,17 @@ public class BubbleRenderer {
         // Get camera position
         Vec3d interpolatedCameraPos = new Vec3d(camera.getPos().x, camera.getPos().y, camera.getPos().z);
 
+        // Increment query counter
+        queryEntityDataCount++;
+
+        // This query count helps us cache the list of relevant entities. We can refresh
+        // the list every 3rd call to this render function
+        if (queryEntityDataCount % 3 == 0 || relevantEntities == null) {
             // Get all entities
             List<Entity> nearbyEntities = world.getOtherEntities(null, area);
 
             // Filter to include only MobEntity & PlayerEntity but exclude any camera 1st person entity and any entities with passengers
-        List<Entity> relevantEntities = nearbyEntities.stream()
+            relevantEntities = nearbyEntities.stream()
                     .filter(entity -> (entity instanceof MobEntity || entity instanceof PlayerEntity))
                     .filter(entity -> !entity.hasPassengers())
                     .filter(entity -> !(entity.equals(cameraEntity) && !camera.isThirdPerson()))
@@ -372,6 +380,9 @@ public class BubbleRenderer {
                     })
                     .collect(Collectors.toList());
 
+            queryEntityDataCount = 0;
+        }
+
         for (Entity entity : relevantEntities) {
 
             // Push a new matrix onto the stack.