Correctly pause/speed up/slow down the End Portal Animation using Mixin magic

src/main/java/eu/crushedpixel/replaymod/mixin/MixinTileEntityEndPortalRenderer.java

@@ -0,0 +1,15 @@
+package eu.crushedpixel.replaymod.mixin;
+
+import eu.crushedpixel.replaymod.timer.EnchantmentTimer;
+import net.minecraft.client.renderer.tileentity.TileEntityEndPortalRenderer;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(TileEntityEndPortalRenderer.class)
+public class MixinTileEntityEndPortalRenderer {
+    @Redirect(method = "func_180544_a", at = @At(value = "INVOKE", target = "Lnet/minecraft/client/Minecraft;getSystemTime()J"))
+    private long getEnchantmentTime() {
+        return EnchantmentTimer.getEnchantmentTime();
+    }
+}

src/main/resources/mixins.replaymod.json

@@ -10,7 +10,8 @@
     "MixinRendererLivingEntity",
     "MixinRenderGlobal",
     "MixinRenderItem",
-    "MixinRenderManager"
+    "MixinRenderManager",
+    "MixinTileEntityEndPortalRenderer"
   ],
   "server": [],
   "client": [],