Makes some changes to make the methods here resemble that of the Forge implementation more.

src/main/java/markil3/immersive_hud/EventBus.java

@@ -178,6 +178,26 @@ public class EventBus
      */
     private static float experienceProgress = -1;
 
+    /**
+     * Sets the transparency level of the next drawn element.
+     *
+     * @param alpha - The transparency, from 0 to 1.
+     */
+    public static void setAlpha(float alpha)
+    {
+        RenderSystem.color4f(1.0F, 1.0F, 1.0F, alpha);
+    }
+
+    /**
+     * Resets the transparency level.
+     *
+     * @see #setAlpha(float)
+     */
+    public static void resetAlpha()
+    {
+        setAlpha(1.0F);
+    }
+
     /**
      * Run whenever the player clicks a mouse button. This brings the hands into
      * view, and briefly brings the health and hunger into view if the held item
@@ -314,6 +334,8 @@ public class EventBus
         MinecraftClient mc = MinecraftClient.getInstance();
         Entity entity = mc.getCameraEntity();
         boolean changed = false;
+        boolean canceled = false;
+
         if (mc.crosshairTarget != null && mc.crosshairTarget
                 .getType() != HitResult.Type.MISS)
         {
@@ -334,25 +356,19 @@ public class EventBus
         if (changed || mainHandLock || offHandLock || crosshairTime
                 > 0)
         {
-            RenderSystem.color4f(1.0F,
+            setAlpha(Main.getAlpha(crosshairTime > 0 ?
-                    1.0F,
-                    1.0F,
-                    Main.getAlpha(crosshairTime > 0 ?
                                    crosshairTime :
                                    VISUAL_TIME));
         }
         else
         {
-            RenderSystem.color4f(1.0F,
+            canceled = true;
-                    1.0F,
-                    1.0F,
-                    0F);
         }
         if (crosshairTime > 0)
         {
             crosshairTime--;
         }
-        return false;
+        return canceled;
     }
 
     /**
@@ -405,15 +421,10 @@ public class EventBus
         {
             mountTime--;
         }
+
         if (mountTime > 0)
         {
-            /*
+            setAlpha(Main.getAlpha(mountTime));
-             * Renders it along with health.
-             */
-            RenderSystem.color4f(1.0F,
-                    1.0F,
-                    1.0F,
-                    Main.getAlpha(mountTime));
             return false;
         }
         return true;
@@ -436,20 +447,11 @@ public class EventBus
          */
         if (healthTime > 0)
         {
-            RenderSystem.color4f(1.0F,
+            setAlpha(Main.getAlpha(healthTime));
-                    1.0F,
-                    1.0F,
-                    Main.getAlpha(healthTime));
-        }
-        else
-        {
-            RenderSystem.color4f(1.0F,
-                    1.0F,
-                    1.0F,
-                    0.0F);
-        }
             return false;
         }
+        return true;
+    }
 
     /**
      * Determines whether or not to draw the health bar, adjusting the alpha as
@@ -466,7 +468,7 @@ public class EventBus
          * health bar won't disappear, allowing the player to be constantly
          * reminded of their low health.
          */
-        final float CONST_BOUNDARY = 0.5F;
+        final float HEALTH_BOUNDARY = 0.5F;
 
         MinecraftClient mc = MinecraftClient.getInstance();
         LivingEntity entity;
@@ -479,14 +481,8 @@ public class EventBus
             return true;
         }
         boolean changed = false;
-
+        boolean canceled =
-        /*
+                healthTime == 0 && health / maxHealth > HEALTH_BOUNDARY;
-         * Resets the transparency from the armor call.
-         */
-        RenderSystem.color4f(1.0F,
-                1.0F,
-                1.0F,
-                1F);
 
         /**
          * Checks for a change in current or max health.
@@ -513,14 +509,11 @@ public class EventBus
          * Only makes a change if the player is healthy. Otherwise,
          * the bar is shown.
          */
-        if (health / maxHealth > CONST_BOUNDARY)
+        if (health / maxHealth > HEALTH_BOUNDARY)
         {
-            RenderSystem.color4f(1.0F,
+            setAlpha(Main.getAlpha(healthTime));
-                    1.0F,
-                    1.0F,
-                    Main.getAlpha(healthTime));
         }
-        return false;
+        return canceled;
     }
 
     /**
@@ -542,15 +535,9 @@ public class EventBus
 
         MinecraftClient mc = MinecraftClient.getInstance();
         PlayerEntity entity;
+        boolean canceled;
         boolean changed = false;
 
-        /*
-         * Resets the transparency from last time.
-         */
-        RenderSystem.color4f(1.0F,
-                1.0F,
-                1.0F,
-                1F);
         if (mc.getCameraEntity() instanceof PlayerEntity)
         {
             entity = (PlayerEntity) mc.getCameraEntity();
@@ -584,15 +571,13 @@ public class EventBus
         {
             hungerTime--;
         }
-        RenderSystem.color4f(1.0F,
+
-                1.0F,
+        canceled = hungerTime == 0 && hunger > HUNGER_BOUNDARY;
-                1.0F,
+        if (!canceled)
-                Main.getAlpha(hungerTime));
+        {
-        /*
+            setAlpha(Main.getAlpha(hungerTime));
-         * Only makes a change if the player is satisfied. Otherwise,
+        }
-         * the bar is shown.
+        return canceled;
-         */
-        return false;
     }
 
     /**
@@ -607,8 +592,6 @@ public class EventBus
     {
         MinecraftClient mc = MinecraftClient.getInstance();
         ClientPlayerEntity entity;
-        boolean changed = false;
-
         if (mc.getCameraEntity() instanceof ClientPlayerEntity)
         {
             entity = (ClientPlayerEntity) mc.getCameraEntity();
@@ -626,12 +609,9 @@ public class EventBus
         {
             jumpTime--;
         }
-        if (experienceTime > 0)
+        if (jumpTime > 0)
         {
-            RenderSystem.color4f(1.0F,
+            setAlpha(Main.getAlpha(jumpTime));
-                    1.0F,
-                    1.0F,
-                    Main.getAlpha(jumpTime));
             return false;
         }
         return true;
@@ -675,10 +655,7 @@ public class EventBus
         }
         if (experienceTime > 0)
         {
-            RenderSystem.color4f(1.0F,
+            setAlpha(Main.getAlpha(experienceTime));
-                    1.0F,
-                    1.0F,
-                    Main.getAlpha(experienceTime));
             return false;
         }
         return true;
@@ -902,9 +879,6 @@ public class EventBus
      */
     public static void recolorHotbar()
     {
-        RenderSystem.color4f(1.0F,
+        setAlpha(Main.getAlpha(hotbarTime));
-                1.0F,
-                1.0F,
-                Main.getAlpha(hotbarTime));
     }
 }

src/main/java/markil3/immersive_hud/mixin/HudHook.java

@@ -45,12 +45,17 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
-    @Inject(method = "renderCrosshair", at = @At(value = "HEAD"))
+    @Inject(method = "renderCrosshair", at = @At(value = "HEAD"),
+            cancellable = true)
     public void startCrosshair(MatrixStack stack, CallbackInfo callbackInfo)
     {
-        EventBus.drawCrosshair();
+        if (EventBus.drawCrosshair())
+        {
+            callbackInfo.cancel();
+        }
     }
 
     /**
@@ -59,6 +64,7 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderCrosshair", at = @At(value = "TAIL"))
@@ -67,7 +73,7 @@ public class HudHook
         /*
          * Resets the color so that nothing else is bothered.
          */
-        RenderSystem.color4f(1, 1, 1, 1F);
+        EventBus.resetAlpha();
     }
 
     /**
@@ -76,14 +82,20 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
-    @Inject(method = "renderMountJumpBar", at = @At(value = "HEAD"))
+    @Inject(method = "renderMountJumpBar", at = @At(value = "HEAD"),
+            cancellable =
+            true)
     public void startJumpbar(MatrixStack stack,
                              int x,
                              CallbackInfo callbackInfo)
     {
-        EventBus.drawJumpbar();
+        if (EventBus.drawJumpbar())
+        {
+            callbackInfo.cancel();
+        }
     }
 
     /**
@@ -92,6 +104,7 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderMountJumpBar", at = @At(value = "TAIL"))
@@ -102,7 +115,7 @@ public class HudHook
         /*
          * Resets the color so that nothing else is bothered.
          */
-        RenderSystem.color4f(1, 1, 1, 1F);
+        EventBus.resetAlpha();
     }
 
     /**
@@ -111,6 +124,7 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderExperienceBar", at = @At(value = "HEAD"),
@@ -131,6 +145,7 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderExperienceBar", at = @At(value = "TAIL"))
@@ -141,7 +156,7 @@ public class HudHook
         /*
          * Resets the color so that nothing else is bothered.
          */
-        RenderSystem.color4f(1, 1, 1, 1F);
+        EventBus.resetAlpha();
     }
 
     /**
@@ -150,12 +165,18 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
-    @Inject(method = "renderMountHealth", at = @At(value = "HEAD"))
+    @Inject(method = "renderMountHealth", at = @At(value = "HEAD"),
+            cancellable =
+            true)
     public void startMountHealth(MatrixStack stack, CallbackInfo callbackInfo)
     {
-        EventBus.drawMountHealth();
+        if (EventBus.drawMountHealth())
+        {
+            callbackInfo.cancel();
+        }
     }
 
     /**
@@ -164,6 +185,7 @@ public class HudHook
      * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderMountHealth", at = @At(value = "TAIL"))
@@ -172,7 +194,7 @@ public class HudHook
         /*
          * Resets the color so that nothing else is bothered.
          */
-        RenderSystem.color4f(1, 1, 1, 1F);
+        EventBus.resetAlpha();
     }
 
     /**
@@ -182,6 +204,7 @@ public class HudHook
      * @param matrices - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderHotbar", at = @At(value = "HEAD"), cancellable =
@@ -203,6 +226,7 @@ public class HudHook
      * @param matrices - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderHotbar", at = @At(value = "INVOKE", target =
@@ -222,6 +246,7 @@ public class HudHook
      * @param matrices - The matrix drawing stack.
      * @param callbackInfo
      *
+     * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @Inject(method = "renderHotbar", at = @At(value = "TAIL"))
@@ -232,6 +257,6 @@ public class HudHook
         /*
          * Resets the color so that nothing else is bothered.
          */
-        RenderSystem.color4f(1, 1, 1, 1F);
+        EventBus.resetAlpha();
     }
 }

src/main/java/markil3/immersive_hud/mixin/ProfilerHook.java

@@ -26,6 +26,7 @@ import org.spongepowered.asm.mixin.injection.Inject;
 import org.spongepowered.asm.mixin.injection.callback.CallbackInfo;
 
 import markil3.immersive_hud.EventBus;
+import markil3.immersive_hud.Main;
 
 /**
  * This class hooks into the profiler to trigger color changes for the status
@@ -50,7 +51,10 @@ public class ProfilerHook
     {
         if (section.equals("armor"))
         {
-            EventBus.drawArmor();
+            if (EventBus.drawArmor())
+            {
+                EventBus.setAlpha(0F);
+            }
         }
     }
 
@@ -69,16 +73,30 @@ public class ProfilerHook
         switch (section)
         {
         case "health":
-            EventBus.drawHealth();
+            /*
+             * Resets the transparency from the previous call.
+             */
+            EventBus.setAlpha(1F);
+            if (EventBus.drawHealth())
+            {
+                EventBus.setAlpha(0F);
+            }
             break;
         case "food":
-            EventBus.drawHunger();
+            /*
+             * Resets the transparency from the previous call.
+             */
+            EventBus.setAlpha(1F);
+            if (EventBus.drawHunger())
+            {
+                EventBus.setAlpha(0F);
+            }
             break;
         case "air":
             /*
              * Resets the color so that nothing else is bothered.
              */
-            RenderSystem.color4f(1, 1, 1, 1F);
+            EventBus.setAlpha(1F);
             break;
         }
     }