[1.15.2] How do I make projectiles invisible for a certain amount of time in first person mode?

[TallYate]

Also I removed the lines shown in the logs, and it no longer says Caused by:, but it still crashes

[TallYate]

[m[32m[11:31:47] [Server thread/INFO] [me.jo.be.BedrockThings/]: entitySpawningPacket created
[m[32m[11:31:47] [Server thread/INFO] [me.jo.be.BedrockThings/]: false writing
[m[32m[11:31:47] [Render thread/INFO] [me.jo.be.BedrockThings/]: true reading
[m[1;31m[11:31:47] [Render thread/FATAL] [minecraft/Minecraft]: Unreported exception thrown!
java.lang.NullPointerException: null
	at net.minecraft.client.renderer.entity.EntityRendererManager.shouldRender(EntityRendererManager.java:233) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.WorldRenderer.updateCameraAndRender(WorldRenderer.java:947) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.renderWorld(GameRenderer.java:612) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.renderer.GameRenderer.updateCameraAndRender(GameRenderer.java:434) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:961) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.run(Minecraft.java:558) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:177) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_231] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_231] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_231] {}
	at net.minecraftforge.userdev.FMLUserdevClientLaunchProvider.lambda$launchService$0(FMLUserdevClientLaunchProvider.java:55) ~[forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.1.0.jar:?] {}
	at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.1.0.jar:?] {}
	at net.minecraftforge.userdev.LaunchTesting.main(LaunchTesting.java:102) [forge-1.15.2-31.2.0_mapped_snapshot_20200514-1.15.1-recomp.jar:?] {}
[m[32m[11:31:48] [Server thread/INFO] [minecraft/MinecraftServer]: Stopping server
[m[32m[11:31:48] [Server thread/INFO] [minecraft/MinecraftServer]: Saving players
[m[32m[11:31:48] [Server thread/INFO] [minecraft/ServerPlayNetHandler]: Dev lost connection: Disconnected
[m[32m[11:31:48] [Server thread/INFO] [minecraft/MinecraftServer]: Dev left the game

Also I just pushed the github again if you need to see the code

[TallYate]

should I use world.isRemote() instead?
I've just been copying vanilla

Edited June 15, 2020 by TallYate

[TallYate]

It stopped crashing!
but the projectile is still invisible

[TallYate]

oh nvm that is just an issue in my renderer

 

[me.jo.be.BedrockThings/]: ClientPlayerEntity['Dev'/1, l='MpServer', x=215.40, y=3.94, z=339.80]  !=  ClientPlayerEntity['Dev'/1, l='MpServer', x=215.40, y=3.94, z=339.80]

 

[TallYate]

Thank you
Everything works now