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

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

@@ -205,6 +205,50 @@ 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 * (1 - 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) ((12F + (22 - getHotbarTranslation())) * (1 - Main.getAlpha(experienceTime))) + getHotbarTranslation();
+    }
+
+    /**
+     * 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) ((12F + (22 - getHotbarTranslation())) * (1 - Main.getAlpha(jumpTime))) + getHotbarTranslation();
+    }
+
+    /**
+     * Obtains the offset that the status bars (health, hunger, etc.) gets from
+     * their usual position.
+     *
+     * @return The offset.
+     */
+    public static float getHealthTranslation()
+    {
+        return 7 * (1 - Math.max(Main.getAlpha(experienceTime), Main.getAlpha(jumpTime))) + 22 * (1 - Main.getAlpha(hotbarTime));//Math.min(, getHotbarTranslation());
+    }
+
     /**
      * 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
@@ -386,7 +430,7 @@ public class TimerUtils
      *
      * @since 0.1-1.16.4-fabric
      */
-    public static boolean drawMountHealth()
+    public static boolean drawMountHealth(MatrixStack stack)
     {
         /*
          * When the health percentage falls to this level or below, the
@@ -431,6 +475,10 @@ public class TimerUtils
 
         if (mountTime > 0)
         {
+            stack.push();
+            stack.translate(0F,
+                    getHealthTranslation(),
+                    0F);
             setAlpha(Main.getAlpha(mountTime));
             return false;
         }
@@ -663,8 +711,9 @@ public class TimerUtils
      * @return If true, then cancel drawing the jump bar.
      *
      * @since 0.1-1.16.4-fabric
+     * @param stack
      */
-    public static boolean drawJumpbar()
+    public static boolean drawJumpbar(MatrixStack stack)
     {
         MinecraftClient mc = MinecraftClient.getInstance();
         ClientPlayerEntity entity;
@@ -687,6 +736,8 @@ public class TimerUtils
         }
         if (jumpTime > 0)
         {
+            stack.push();
+            stack.translate(0F, TimerUtils.getJumpTranslation(), 0F);
             setAlpha(Main.getAlpha(jumpTime));
             return false;
         }
@@ -701,7 +752,7 @@ public class TimerUtils
      *
      * @since 0.1-1.16.4-fabric
      */
-    public static boolean drawExperience()
+    public static boolean drawExperience(MatrixStack stack)
     {
         MinecraftClient mc = MinecraftClient.getInstance();
         ClientPlayerEntity entity;
@@ -731,6 +782,8 @@ public class TimerUtils
         }
         if (experienceTime > 0)
         {
+            stack.push();
+            stack.translate(0F, TimerUtils.getExperienceTranslation(), 0F);
             setAlpha(Main.getAlpha(experienceTime));
             return false;
         }
@@ -953,8 +1006,11 @@ public class TimerUtils
      *
      * @since 0.1-1.16.4-fabric
      */
-    public static void recolorHotbar()
+    public static void recolorHotbar(MatrixStack stack)
     {
+        RenderSystem.pushMatrix();
+        stack.push();
+        RenderSystem.translatef(0F, TimerUtils.getHotbarTranslation(), 0F);
         setAlpha(Main.getAlpha(hotbarTime));
     }
 }

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

@@ -16,6 +16,8 @@
  */
 package markil3.immersive_hud.mixin;
 
+import com.mojang.blaze3d.systems.RenderSystem;
+
 import net.minecraft.client.MinecraftClient;
 import net.minecraft.client.gui.hud.InGameHud;
 import net.minecraft.client.network.ClientPlayerEntity;
@@ -95,7 +97,7 @@ public class HudHook
                              int x,
                              CallbackInfo callbackInfo)
     {
-        if (TimerUtils.drawJumpbar())
+        if (TimerUtils.drawJumpbar(stack))
         {
             callbackInfo.cancel();
         }
@@ -115,6 +117,7 @@ public class HudHook
                               int x,
                               CallbackInfo callbackInfo)
     {
+        stack.pop();
         /*
          * Resets the color so that nothing else is bothered.
          */
@@ -136,7 +139,7 @@ public class HudHook
                                 int x,
                                 CallbackInfo callbackInfo)
     {
-        if (TimerUtils.drawExperience())
+        if (TimerUtils.drawExperience(stack))
         {
             callbackInfo.cancel();
         }
@@ -156,12 +159,38 @@ public class HudHook
                                  int x,
                                  CallbackInfo callbackInfo)
     {
+        stack.pop();
         /*
          * Resets the color so that nothing else is bothered.
          */
         TimerUtils.resetAlpha();
     }
 
+    /**
+     * Changes the position of the status bars as the ones below them move up
+     * and down.
+     *
+     * @param stack - The matrix stack used.
+     *
+     * @return The same matrix stack, with a new matrix pushed onto it.
+     */
+    @ModifyVariable(method = "renderStatusBars(Lnet/minecraft/client/util" +
+            "/math/MatrixStack;)V", at = @At("HEAD"))
+    public MatrixStack startStatus(MatrixStack stack)
+    {
+        stack.push();
+        stack.translate(0F, TimerUtils.getHealthTranslation(), 0F);
+        return stack;
+    }
+
+    @ModifyVariable(method = "renderStatusBars(Lnet/minecraft/client/util" +
+            "/math/MatrixStack;)V", at = @At("TAIL"))
+    public MatrixStack finishStatus(MatrixStack stack)
+    {
+        stack.pop();
+        return stack;
+    }
+
     /**
      * Determines whether or not to draw the mount's health.
      *
@@ -175,7 +204,7 @@ public class HudHook
             cancellable = true)
     public void startMountHealth(MatrixStack stack, CallbackInfo callbackInfo)
     {
-        if (TimerUtils.drawMountHealth())
+        if (TimerUtils.drawMountHealth(stack))
         {
             callbackInfo.cancel();
         }
@@ -196,6 +225,7 @@ public class HudHook
         /*
          * Resets the color so that nothing else is bothered.
          */
+        stack.pop();
         TimerUtils.resetAlpha();
     }
 
@@ -236,15 +266,15 @@ public class HudHook
     /**
      * Makes the actual adjustment to the hotbar as needed.
      *
-     * @param matrices - The matrix drawing stack.
+     * @param f - The original transparency
-     * @param callbackInfo
+     * @param stack - The matrix stack
      *
      * @version 0.2-1.16.4-fabric
      * @since 0.1-1.16.4-fabric
      */
     @ModifyVariable(method = "renderStatusEffectOverlay" +
             "(Lnet/minecraft/client/util/math/MatrixStack;)V", at =
-    @At(value = "STORE"), ordinal = 1)
+    @At(value = "STORE"))
     public float updatePotion(float f,
                               MatrixStack stack)
     {
@@ -309,14 +339,14 @@ public class HudHook
                              MatrixStack matrices,
                              CallbackInfo callbackInfo)
     {
-        TimerUtils.recolorHotbar();
+        TimerUtils.recolorHotbar(matrices);
     }
 
     /**
      * Resets any changes from drawing the hotbar.
      *
      * @param tickDelta
-     * @param matrices - The matrix drawing stack.
+     * @param stack - The matrix drawing stack.
      * @param callbackInfo
      *
      * @version 0.2-1.16.4-fabric
@@ -324,9 +354,11 @@ public class HudHook
      */
     @Inject(method = "renderHotbar", at = @At(value = "TAIL"))
     public void finishHotbar(float tickDelta,
-                             MatrixStack matrices,
+                             MatrixStack stack,
                              CallbackInfo callbackInfo)
     {
+        RenderSystem.popMatrix();
+        stack.pop();
         /*
          * Resets the color so that nothing else is bothered.
          */