Makes the hotbar and experience/jump bars move in and out.

Its a nice effect.

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

@@ -166,20 +166,21 @@ public class EventBus
         case HEALTH:
             if (event instanceof RenderGameOverlayEvent.Pre)
             {
-                if (TimerUtils.drawHealth())
+                if (TimerUtils.drawHealth(event.getMatrixStack()))
                 {
                     event.setCanceled(true);
                 }
             }
             else if (event instanceof RenderGameOverlayEvent.Post)
             {
+                event.getMatrixStack().pop();
                 resetAlpha();
             }
             break;
         case FOOD:
             if (event instanceof RenderGameOverlayEvent.Pre)
             {
-                if (TimerUtils.drawHunger())
+                if (TimerUtils.drawHunger(event.getMatrixStack()))
                 {
                     event.setCanceled(true);
                 }
@@ -189,13 +190,14 @@ public class EventBus
              */
             else if (event instanceof RenderGameOverlayEvent.Post)
             {
+                event.getMatrixStack().pop();
                 resetAlpha();
             }
             break;
         case ARMOR:
             if (event instanceof RenderGameOverlayEvent.Pre)
             {
-                if (TimerUtils.drawArmor())
+                if (TimerUtils.drawArmor(event.getMatrixStack()))
                 {
                     event.setCanceled(true);
                 }
@@ -205,19 +207,38 @@ public class EventBus
              */
             else if (event instanceof RenderGameOverlayEvent.Post)
             {
+                event.getMatrixStack().pop();
+                resetAlpha();
+            }
+            break;
+        case AIR:
+            if (event instanceof RenderGameOverlayEvent.Pre)
+            {
+                if (TimerUtils.drawAir(event.getMatrixStack()))
+                {
+                    event.setCanceled(true);
+                }
+            }
+            /*
+             * Reset the transparency.
+             */
+            else if (event instanceof RenderGameOverlayEvent.Post)
+            {
+                event.getMatrixStack().pop();
                 resetAlpha();
             }
             break;
         case HEALTHMOUNT:
             if (event instanceof RenderGameOverlayEvent.Pre)
             {
-                if (TimerUtils.drawMountHealth())
+                if (TimerUtils.drawMountHealth(event.getMatrixStack()))
                 {
                     event.setCanceled(true);
                 }
             }
             else if (event instanceof RenderGameOverlayEvent.Post)
             {
+                event.getMatrixStack().pop();
                 resetAlpha();
             }
             break;

src/main/java/markil3/immersive_hud/RenderUtils.java

@@ -189,7 +189,7 @@ public class RenderUtils
         float f = mc.player.getHorseJumpPower();
         int i = 182;
         int j = (int) (f * 183.0F);
-        int k = scaledHeight - 32 + 3;
+        int k = scaledHeight - TimerUtils.getJumpTranslation();
         gui.blit(matrixStack, xPosition, k, 0, 84, 182, 5);
         if (j > 0)
         {
@@ -239,7 +239,7 @@ public class RenderUtils
             {
                 int j = 182;
                 int k = (int) (mc.player.experience * 183.0F);
-                int l = scaledHeight - 32 + 3;
+                int l = scaledHeight - TimerUtils.getExperienceTranslation();
                 gui.blit(matrixStack, x, l, 0, 64, 182, 5);
                 if (k > 0)
                 {
@@ -256,7 +256,7 @@ public class RenderUtils
                 String s = "" + mc.player.experienceLevel;
                 int i1 = (scaledWidth - gui.getFontRenderer()
                         .getStringWidth(s)) / 2;
-                int j1 = scaledHeight - 31 - 4;
+                int j1 = scaledHeight - (int) ((22F * Main.getAlpha(TimerUtils.hotbarTime) + 9F) * alpha) - (int) (4F * alpha);
                 gui.getFontRenderer()
                         .drawString(matrixStack,
                                 s,
@@ -335,10 +335,10 @@ public class RenderUtils
             int k = 182;
             int l = 91;
             gui.setBlitOffset(-90);
-            gui.blit(matrixStack, i - 91, scaledHeight - 22, 0, 0, 182, 22);
+            gui.blit(matrixStack, i - 91, scaledHeight - TimerUtils.getHotbarTranslation(), 0, 0, 182, 22);
             gui.blit(matrixStack,
                     i - 91 - 1 + playerentity.inventory.currentItem * 20,
-                    scaledHeight - 22 - 1,
+                    scaledHeight - (int) (22F * alpha) - 1,
                     0,
                     22,
                     24,
@@ -349,7 +349,7 @@ public class RenderUtils
                 {
                     gui.blit(matrixStack,
                             i - 91 - 29,
-                            scaledHeight - 23,
+                            scaledHeight - (int) (23F * alpha),
                             24,
                             22,
                             29,
@@ -359,7 +359,7 @@ public class RenderUtils
                 {
                     gui.blit(matrixStack,
                             i + 91,
-                            scaledHeight - 23,
+                            scaledHeight - (int) (23F * alpha),
                             53,
                             22,
                             29,
@@ -375,7 +375,7 @@ public class RenderUtils
             for (int i1 = 0; i1 < 9; ++i1)
             {
                 int j1 = i - 90 + i1 * 20 + 2;
-                int k1 = scaledHeight - 16 - 3;
+                int k1 = scaledHeight - (int) (16F * alpha) - 3;
                 renderHotbarItem(mc, alpha, j1,
                         k1,
                         partialTicks,
@@ -385,7 +385,7 @@ public class RenderUtils
 
             if (!itemstack.isEmpty())
             {
-                int i2 = scaledHeight - 16 - 3;
+                int i2 = scaledHeight - (int) (16F * alpha) - 3;
                 if (handside == HandSide.LEFT)
                 {
                     renderHotbarItem(mc, alpha, i - 91 - 26,

src/main/java/markil3/immersive_hud/TimerUtils.java

@@ -178,6 +178,55 @@ public class TimerUtils
         setAlpha(1.0F);
     }
 
+    /**
+     * Obtains the offset from the bottom of the screen that the hotbar
+     * receives.
+     *
+     * @return The offset the hotbar uses.
+     */
+    public static int getHotbarTranslation()
+    {
+        return (int) (22F * Main.getAlpha(hotbarTime));
+    }
+
+
+    /**
+     * Obtains the offset from the bottom of the screen that the experience bar
+     * receives.
+     *
+     * @return The offset the experience bar uses.
+     */
+    public static int getExperienceTranslation()
+    {
+        return (int) ((getHotbarTranslation() + 10F) * Main.getAlpha(
+                experienceTime)) - 3;
+    }
+
+
+    /**
+     * Obtains the offset from the bottom of the screen that the jump bar
+     * receives.
+     *
+     * @return The offset the jump bar uses.
+     */
+    public static int getJumpTranslation()
+    {
+        return (int) ((getHotbarTranslation() + 10F) * Main.getAlpha(jumpTime)) - 3;
+    }
+
+
+    /**
+     * Obtains the offset that the status bars (health, hunger, etc.) gets from
+     * their usual position.
+     *
+     * @return The offset.
+     */
+    public static float getHealthTranslation()
+    {
+        return 29 - Math.max(Math.max(getExperienceTranslation(),
+                getJumpTranslation()), getHotbarTranslation());
+    }
+
     public static void onClick(Hand hand, Item item)
     {
         crosshairTime = VISUAL_TIME;
@@ -327,14 +376,19 @@ public class TimerUtils
      */
     public static void updatePotions(ClientPlayerEntity player)
     {
+        ArrayList<Effect> toRemove = new ArrayList<>();
         for (Effect effect : Collections.checkedSet(effectTime.keySet(),
                 Effect.class))
         {
             if (!player.isPotionActive(effect))
             {
-                effectTime.remove(effect);
+                toRemove.add(effect);
             }
         }
+        for (Effect effect : toRemove)
+        {
+            effectTime.remove(effect);
+        }
     }
 
     /**
@@ -591,7 +645,7 @@ public class TimerUtils
      *
      * @since 0.2-1.16.4-forge
      */
-    public static boolean drawHealth()
+    public static boolean drawHealth(MatrixStack stack)
     {
         /*
          * When the health percentage falls to this level or below, the
@@ -631,11 +685,19 @@ public class TimerUtils
         {
             if (healthTime > 0)
             {
+                stack.push();
+                stack.translate(0F,
+                        getHealthTranslation(),
+                        0F);
                 setAlpha(Main.getAlpha(healthTime));
                 return false;
             }
             return true;
         }
+        stack.push();
+        stack.translate(0F,
+                getHealthTranslation(),
+                0F);
         return false;
     }
 
@@ -647,7 +709,7 @@ public class TimerUtils
      *
      * @since 0.2-1.16.4-forge
      */
-    public static boolean drawHunger()
+    public static boolean drawHunger(MatrixStack stack)
     {
         /*
          * When hunger falls to this level or below, the hunger bar won't
@@ -673,7 +735,6 @@ public class TimerUtils
         if (changed || hunger <= HUNGER_BOUNDARY)
         {
             hungerTime = HEALTH_TIME;
-            setAlpha(Main.getAlpha(hungerTime));
         }
         else if (hungerTime > 0)
         {
@@ -683,18 +744,32 @@ public class TimerUtils
          * Only fade a change if the player is satisfied. Otherwise,
          * the bar is shown.
          */
-        return hungerTime == 0 && hunger > HUNGER_BOUNDARY;
+        if (hungerTime == 0 && hunger > HUNGER_BOUNDARY)
+        {
+            return true;
+        }
+        else
+        {
+            setAlpha(Main.getAlpha(hungerTime));
+            stack.push();
+            stack.translate(0F,
+                    getHealthTranslation(),
+                    0F);
+            return false;
+        }
     }
 
     /**
      * Determines whether or not to draw the armor bar, adjusting the alpha as
      * needed.
      *
+     * @param stack
+     *
      * @return If true, then cancel drawing the armor bar.
      *
      * @since 0.2-1.16.4-forge
      */
-    public static boolean drawArmor()
+    public static boolean drawArmor(MatrixStack stack)
     {
         /*
          * Renders armor along with health.
@@ -702,20 +777,44 @@ public class TimerUtils
         if (healthTime > 0)
         {
             setAlpha(Main.getAlpha(healthTime));
+            stack.push();
+            stack.translate(0F,
+                    getHealthTranslation(),
+                    0F);
             return false;
         }
         return true;
     }
 
+    /**
+     * Repositions the oxygen bar.
+     *
+     * @param stack
+     *
+     * @return If true, then cancel drawing the oxygen bar.
+     *
+     * @since 0.2-1.16.4-forge
+     */
+    public static boolean drawAir(MatrixStack stack)
+    {
+        stack.push();
+        stack.translate(0F,
+                getHealthTranslation(),
+                0F);
+        return false;
+    }
+
     /**
      * Determines whether or not to draw the mount's health, adjusting the alpha
      * as needed.
      *
+     * @param stack
+     *
      * @return If true, then cancel drawing the mount health bar.
      *
      * @since 0.2-1.16.4-forge
      */
-    public static boolean drawMountHealth()
+    public static boolean drawMountHealth(MatrixStack stack)
     {
         Minecraft mc = Minecraft.getInstance();
         Entity tmp = mc.player.getRidingEntity();
@@ -750,6 +849,10 @@ public class TimerUtils
 
         if (mountTime > 0)
         {
+            stack.push();
+            stack.translate(0F,
+                    getHealthTranslation(),
+                    0F);
             setAlpha(Main.getAlpha(mountTime));
             return false;
         }