Jump to content

Recommended Posts

Posted (edited)

 Hi there

I am attempting to make a gui where the player will be able to click whatever block is in front of them.

I've tried a few approaches and none of them have worked. (Bare with me as I have absolutely zero knowledge in 3D rendering.)

 

I've looked online for a bit and found this on stackoverflow using OpenGL.

Here is my 1:1 attempt in Java on my container screen:

    @Override
    public void render(@NotNull PoseStack pose, int mouseX, int mouseY, float partialTick) {
        // https://stackoverflow.com/a/7702895/13844398
        // STEP 1: get mouse coords. (mouseX, mouseY)
        
        // STEP 2
        Matrix4f modelviewMatrix = RenderSystem.getModelViewMatrix();
        Matrix4f projectionMatrix = RenderSystem.getProjectionMatrix();

        // STEP 3
        modelviewMatrix.multiply(projectionMatrix);

        // STEP 4
        modelviewMatrix.invert();

        // STEP 5
        float x = Mth.clampedMap(mouseX, 0.0F, width, -1.0F, 1.0F);
        float y = Mth.clampedMap(mouseY, 0.0F, height, -1.0F, 1.0F);
        float z = 1.0F; // the depth value ?
        float w = 1.0F;

        Vector4f vector4f = new Vector4f(x, y, z, w);

        // STEP 6
        vector4f.transform(modelviewMatrix);

        // STEP 7
        vector4f.mul(1 / vector4f.w());

        // presumably results in a direction vector ??
        Vec3 vec3 = new Vec3(vector4f.x(), vector4f.y(), vector4f.z());

        getMinecraft().font.draw(pose, vec3.toString(), 10.0F, 10.0F, 14737632);
    }

My screen prints something that resembles this: (239.75..., 126.00..., -2003000.125). Which simply looks like my cursor's coordinates (with an extra`z` value) on screen an nothing more.

 

Am I heading towards the right direction? Is there an easier way?

Edited by than00ber1
added missing link to post
Posted

I have zero knowledge about this stuff either. 🙂 I do know you don't want to modify those internal matrices like you are.

You should at least clone them. But I don't think they are what you want anyway.

 

Take what is below with a pinch of salt!

I would guess the matrix values you want are those used in RenderTarget._blitToScreen()? 

But even then this isn't going to help you. You don't know the depth of the block. The examples in the link assume you know the value or use z=1 (a point on the far plane).

You probably really need to do some kind of depth test on the buffer at the clicked "pixel". I have no idea how to do that.

 

Your better bet would to ask on the discord channel of one of the graphics optimisation mods. They will have a lot more knowledge about this stuff.

Boilerplate:

If you don't post your logs/debug.log we can't help you. For curseforge you need to enable the forge debug.log in its minecraft settings. You should also post your crash report if you have one.

If there is no error in the log file and you don't have a crash report then post the launcher_log.txt from the minecraft folder. Again for curseforge this will be in your curseforge/minecraft/Install

Large files should be posted to a file sharing site like https://gist.github.com  You should also read the support forum sticky post.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Unfortunately, your content contains terms that we do not allow. Please edit your content to remove the highlighted words below.
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Announcements



  • Recently Browsing

    • No registered users viewing this page.
  • Posts

    • Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here  
    • Cracked Launchers are not supported
    • Hi, I have a problem in minecraft java (only in forge 1.20.1), When I start the game after a moment the game crashed with code 1 this only in forge 1.20.1 , I tried to reinstall java, Upgrade java to 17, update the drivers to the latest version, downgrade the drivers to the pervious version, deleting .minecraft and reinstall it , but none of these ways working.   here is the log:   [Launcher] Launching Minecraft... I'm hiding! mods after C:\Users\Windows\AppData\Roaming\.minecraft\mods\tl_skin_cape_forge_1.20_1.20.1-1.32.jar [InnerMinecraftServersImpl]  search changers of the servers read servers from servers.dat [] [InnerMinecraftServersImpl]  prepare inner servers save servers to servers.dat [Launcher] Game skin type: TLAUNCHER [Launcher] Starting Minecraft Forge 1.20.1... [Launcher] Launching in: C:\Users\Windows\AppData\Roaming\.minecraft Starting garbage collector: 96 / 227 MB Garbage collector completed: 60 / 214 MB [Launcher] Processing post-launch actions. Assist launch: true =============================================================================================== [05:29:03] [main/INFO]: ModLauncher running: args [--username, *********, --version, Forge 1.20.1, --gameDir, C:\Users\Windows\AppData\Roaming\.minecraft, --assetsDir, C:\Users\Windows\AppData\Roaming\.minecraft\assets, --assetIndex, 5, --uuid, *************************************, --accessToken, вќ„вќ„вќ„вќ„вќ„вќ„вќ„вќ„, --clientId, null, --xuid, null, --userType, mojang, --versionType, modified, --width, 925, --height, 530, --launchTarget, forgeclient, --fml.forgeVersion, 47.3.22, --fml.mcVersion, 1.20.1, --fml.forgeGroup, net.minecraftforge, --fml.mcpVersion, 20230612.114412] [05:29:04] [main/INFO]: ModLauncher 10.0.9+10.0.9+main.dcd20f30 starting: java version 17.0.12 by Oracle Corporation; OS Windows 10 arch amd64 version 10.0 [05:29:15] [main/INFO]: Loading ImmediateWindowProvider fmlearlywindow [05:29:24] [main/INFO]: Trying GL version 4.6 [05:29:60] [main/INFO]: Requested GL version 4.6 got version 4.6 [05:29:67] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.5 Source=union:/C:/Users/Windows/AppData/Roaming/.minecraft/libraries/org/spongepowered/mixin/0.8.5/mixin-0.8.5.jar%23100!/ Service=ModLauncher Env=CLIENT FATAL ERROR in native method: Thread[pool-2-thread-1,5,main]: No context is current or a function that is not available in the current context was called. The JVM will abort execution.     at org.lwjgl.opengl.GL11C.nglGetString(org.lwjgl.opengl@3.3.1+7/Native Method)     at org.lwjgl.opengl.GL11C.glGetString(org.lwjgl.opengl@3.3.1+7/GL11C.java:978)     at net.minecraftforge.fml.earlydisplay.DisplayWindow.initRender(fmlearlydisplay@1.20.1-47.3.22/DisplayWindow.java:209)     at net.minecraftforge.fml.earlydisplay.DisplayWindow.lambda$start$5(fmlearlydisplay@1.20.1-47.3.22/DisplayWindow.java:292)     at net.minecraftforge.fml.earlydisplay.DisplayWindow$$Lambda$437/0x000001fab120a618.run(fmlearlydisplay@1.20.1-47.3.22/Unknown Source)     at java.util.concurrent.Executors$RunnableAdapter.call(java.base@17.0.12/Executors.java:539)     at java.util.concurrent.FutureTask.run(java.base@17.0.12/FutureTask.java:264)     at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(java.base@17.0.12/ScheduledThreadPoolExecutor.java:304)     at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@17.0.12/ThreadPoolExecutor.java:1136)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@17.0.12/ThreadPoolExecutor.java:635)     at java.lang.Thread.run(java.base@17.0.12/Thread.java:842) Here I am! [VersionManager] Refreshing versions locally... [VersionManager] Versions has been refreshed (6 ms) [Launcher] Launcher exited. [Launcher] Minecraft closed with exit code: 1 flush now [Launcher] [Crash] Signature "Bad video drivers" matches! [Crash] Signature "Bad video drivers" matches! [Launcher] [Crash] Crash has been recognized! [Crash] Crash has been recognized! flush now
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.