make some renderers "class specific".

src/main/java/fr/alexdoru/mwe/config/MWEConfig.java

@@ -701,7 +701,7 @@ public static void onColoredLeatherArmorSetting() {
     public static boolean witherHUDinSidebar = true;
 
     @ConfigProperty(
-            category = MEGA_WALLS, subCategory = "HUD",
+            category = MEGA_WALLS, subCategory = "Class-Specific HUD",
             name = "Strength HUD",
             comment = "Displays the duration of the strength effect when you have it or when you are about to have it with Hunter."
                     + " Works with Dreadlord, Herobrine, Hunter and Zombie.")
@@ -715,7 +715,7 @@ public static void onStrengthHUDSetting() {
     }
 
     @ConfigProperty(
-            category = MEGA_WALLS, subCategory = "HUD",
+            category = MEGA_WALLS, subCategory = "Class-Specific HUD",
             name = "Creeper primed TNT HUD",
             comment = "Displays the cooldown of primed TNT when playing Creeper")
     public static final GuiPosition creeperTNTHUDPosition = new GuiPosition(true, 0.5d, 8d / 20d);

src/main/java/fr/alexdoru/mwe/gui/guiapi/GuiManager.java

@@ -12,6 +12,7 @@
 public final class GuiManager {
 
     private static final ArrayList<IRenderer> registeredRenderers = new ArrayList<>();
+    private static final ArrayList<IRenderer> classSpecificRenderers = new ArrayList<>();
     private static final Minecraft mc = Minecraft.getMinecraft();
     public static final ArmorHUD armorHUD = new ArmorHUD();
     public static final ArrowHitHUD arrowHitHUD = new ArrowHitHUD();
@@ -48,6 +49,9 @@ public final class GuiManager {
         registeredRenderers.add(squadHealthHUD);
         registeredRenderers.add(warcryHUD);
         registeredRenderers.trimToSize();
+        classSpecificRenderers.add(creeperPrimedTntHUD);
+        classSpecificRenderers.add(strengthHUD);
+        classSpecificRenderers.trimToSize();
     }
 
     /**
@@ -83,13 +87,18 @@ public static IRenderer getRendererFromPosition(GuiPosition guiPosition) {
         return null;
     }
 
-    public static void renderAllDummy() {
+    /**
+     * renders the appropriate HUDs for the PositionEditGuiScreen instance
+     * @param c the renderer which is being positioned in the PositionEditGuiScreen
+     */
+    public static void renderDummiesForPositionEditScreen(IRenderer c) {
         final ScaledResolution resolution = new ScaledResolution(mc);
         for (final IRenderer renderer : registeredRenderers) {
-            if (renderer.getGuiPosition().isEnabled()) {
-                renderer.getGuiPosition().updateAbsolutePosition(resolution);
-                renderer.renderDummy();
+            if (!renderer.getGuiPosition().isEnabled() || classSpecificRenderers.contains(renderer) && !renderer.getClass().isInstance(c)) {
+                continue;
             }
+            renderer.getGuiPosition().updateAbsolutePosition(resolution);
+            renderer.renderDummy();
         }
     }
 

src/main/java/fr/alexdoru/mwe/gui/guiapi/PositionEditGuiScreen.java

@@ -34,7 +34,7 @@ public void drawScreen(int mouseX, int mouseY, float partialTicks) {
         this.renderCrosshair();
         final boolean prevEnabled = this.guiPosition.isEnabled();
         this.guiPosition.setEnabled(false);
-        GuiManager.renderAllDummy();
+        GuiManager.renderDummiesForPositionEditScreen(renderer);
         this.guiPosition.setEnabled(prevEnabled);
         super.drawDefaultBackground();
         renderer.renderDummy();