I need to get debugFPS but it has private-access in class Mnecraft (net.minecraft.client.Minecraft), I'm try to using Reflection for that and It's give me an error:

 

java.lang.RuntimeException: No such field exception!
    at com.thmc.mod.events.ItemDelayEventHandler.onPreInfoRender(ItemDelayEventHandler.java:130) ~[?:1.0] {re:classloading}
    at net.minecraftforge.eventbus.ASMEventHandler_34_ItemDelayEventHandler_onPreInfoRender_Pre.invoke(.dynamic) ~[?:?] {}
    at net.minecraftforge.eventbus.ASMEventHandler.invoke(ASMEventHandler.java:85) ~[eventbus-3.0.5-service.jar:?] {}
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:297) ~[eventbus-3.0.5-service.jar:?] {}
    at net.minecraftforge.client.gui.ForgeIngameGui.pre(ForgeIngameGui.java:828) ~[?:?] {re:classloading}
    at net.minecraftforge.client.gui.ForgeIngameGui.func_238445_a_(ForgeIngameGui.java:121) ~[?:?] {re:classloading}
    at net.minecraft.client.renderer.GameRenderer.func_195458_a(GameRenderer.java:765) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
    at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:976) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:607) [?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
    at net.minecraft.client.main.Main.main(Main.java:184) [?:?] {re:classloading,pl:runtimedistcleaner:A}
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}
    at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.4-35.0.17.jar:35.0] {}
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$431/324579982.call(Unknown Source) [forge-1.16.4-35.0.17.jar:35.0] {}
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.6.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.6.jar:?] {}
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.6.jar:?] {}
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.6.jar:?] {}
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.6.jar:?] {}

 

then I'm try to try-catch Reflection and it's give me that error again?

Can anyone help me for that?

 

Here is my code

// throws NoSuchFieldException, IllegalAccessException
try {
    Field fps = Minecraft.class.getDeclaredField("debugFPS");
    if (Modifier.isPrivate(fps.getModifiers())) {
        fps.setAccessible(true);
        String text = ChatColor.WHITE + "FPS: " + RenderScreenGui.INSTANCE.translateFPSColor(fps.getInt(fps));
        this.mc.fontRenderer.drawString(matrixStack, text, ((float)(event.getWindow().getScaledWidth() / 2) + 1.0625F - (float)(this.mc.fontRenderer.getStringWidth(text) / 2)) - ((float)((event.getWindow().getScaledWidth() / 2) - (this.mc.fontRenderer.getStringWidth(text) / 2 + 5) - 1.0625F)), ((float)(event.getWindow().getScaledHeight() / 2 - 24) + (float)(9 + 1)) - ((float)(event.getWindow().getScaledHeight() / 2 - 22)), 16777215);
    }
}
catch (NoSuchFieldException e) {
    throw new RuntimeException("No such field");
}

 

Edited January 1, 20214 yr by Th1Minecraft

32 minutes ago, diesieben07 said:

You need to use ObfuscationReflectionHelper with SRG names, otherwise your reflection code will not work outside of the development environment.

That's work! but idk why it's only work for an IDE runClient, the fps is showing. But when do I export the mod jar, run the game, and then the fps doesn't show.

34 minutes ago, diesieben07 said:

Show updated code and describe exactly how you exported the mod jar.

Oh, I solved it. That's a bug from client side and it didn't send correctly because it needs to synchronize with other classes.
But Thanks for helping a lot.