[1.8] Rendering item model from item stack using EntityItem and...?

RoseCotton · March 11, 2015

Hi, All.

I'm still working on my shelves mod: I have my shelf block behaving properly, rendering and able to hold up to four item stacks.

I'm trying to make the item models render on the shelves in the proper location.

I want to say,

For each itemStacks[0 through 3],

take the ItemStack, find it's item model, render the item model in the proper location[0 through 3] relative to the block.

I was looking at EntityItem, and I can set an item stack, but I'm not sure how to render it.

Looking at RenderEntityItem, there are arguments of types RenderManager and RenderItem (and I'm not sure how to create those), but I'm thinking I should be able to find something that says "render this item in this location of this block" or something. sounds like something I might have to write...

What structure would you use to get this done?

Draco18s · March 11, 2015

float renderPosX;
float renderPosZ;

for(int i=0; i<4; i++) {
renderPosX = i/2; /*  0 / 2 = 0, 1 / 1 = 0, etc. */
renderPosZ = i%2;  /*  0 % 2 = 0, 1 % 2 = 1, etc. */
/*the multiply by some fraction, add in the block's world coordinates*/
/*finally, call the renderer*/
}

RoseCotton · March 11, 2015

Thanks, Draco; so, what I got out of that is that the position data is of type float.

Right now I'm trying to figure out how to add in the block's coordinates but haven't found the translation between BlockPos and x, y, and z coordinates.

I'll have a y offset for my items, too, so I'll add that into the for loop.

I'm reading up on BlockPos and Entity and RenderEntityItem to figure out the position data.

It's the rendering part I'm stuck on.

Draco18s · March 11, 2015

haven't found the translation between BlockPos and x, y, and z coordinates.

BlockPos.x ?

RoseCotton · March 11, 2015

after stumbling around, the code that eclipse hasn't complained much about is:

double x = ((TileEntity)shelfTileEntity).getPos().getX();

double y = ((TileEntity)shelfTileEntity).getPos().getY();

double z = ((TileEntity)shelfTileEntity).getPos().getZ();

we'll see if that works...

I can't believe I just realized yesterday that it's TileEntity, not TitleEntity. I have a _lot_ of spelling errors in my code now. :\

RoseCotton · March 11, 2015

I've put together something that I think might render my items (I at least want to see if it works) but I'm not sure from where to call my RenderShelfTileEntity class.

package com.rosecotton.shelvesmod;

import net.minecraft.client.renderer.entity.RenderEntityItem;
import net.minecraft.entity.item.EntityItem;
import net.minecraft.tileentity.TileEntity;

public class RenderShelfTileEntity 
{
public RenderShelfTileEntity(ShelfTitleEntity shelfTileEntity)
{
	RenderEntityItem renderEntityItem = new RenderEntityItem(null, null);
	double x = ((TileEntity)shelfTileEntity).getPos().getX();
	double y = ((TileEntity)shelfTileEntity).getPos().getY();
	double z = ((TileEntity)shelfTileEntity).getPos().getZ();
	EntityItem shelfEntityItem[] = new EntityItem[4];
	for (int n = 0; n <4; n++)
	{
		shelfEntityItem[n].setEntityItemStack(shelfTileEntity.itemStacks[n]);

		double xPlus = x + (double)((4+(n%2)*8)/16);
		double yPlus = y + (double)((2+(n/2)*6)/16);
		double zPlus = z + (double)((13-(n/2)*8)/16);

		renderEntityItem.func_177075_a(shelfEntityItem[n], xPlus, yPlus, zPlus, 0.0625f, 1.05f);
	}

}
}

Should I call this from the BlockShelf class, the ShelvesEventHandler (which currently doese nothing), or the ShelfTitleEntity class?

I know I need to rename everything that says TitleEntity to TileEntity. :\

RoseCotton · March 11, 2015

uh, oh.... if position data is type float, then I just calculated doubles for who-knows-what reason and passed them into I-don't-know-what in my renderEntityItem.func_177075_a(bunches-of-stuff).

RoseCotton · March 11, 2015

UPDATE:

trying to update inventory in my shelf, which is where I call my EntityItem renderer code, definitely causes mc to crash.

[11:05:06] [main/INFO] [GradleStart]: Extra: []

[11:05:06] [main/INFO] [GradleStart]: Running with arguments: [--userProperties, {}, --assetsDir, C:/Users/Becky/.gradle/caches/minecraft/assets, --assetIndex, 1.8, --accessToken, {REDACTED}, --version, 1.8, --tweakClass, net.minecraftforge.fml.common.launcher.FMLTweaker, --tweakClass, net.minecraftforge.gradle.GradleStartCommon$GradleStartTweaker]

[11:05:06] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker

[11:05:06] [main/INFO] [LaunchWrapper]: Using primary tweak class name net.minecraftforge.fml.common.launcher.FMLTweaker

[11:05:06] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.gradle.GradleStartCommon$GradleStartTweaker

[11:05:06] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLTweaker

[11:05:06] [main/INFO] [FML]: Forge Mod Loader version 8.0.20.1023 for Minecraft 1.8 loading

[11:05:06] [main/INFO] [FML]: Java is Java HotSpot Client VM, version 1.8.0_31, running on Windows 7:x86:6.1, installed at C:\Program Files\Java\jre1.8.0_31

[11:05:06] [main/INFO] [FML]: Managed to load a deobfuscated Minecraft name- we are in a deobfuscated environment. Skipping runtime deobfuscation

[11:05:06] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.gradle.GradleStartCommon$GradleStartTweaker

[11:05:06] [main/INFO] [GradleStart]: Injecting location in coremod net.minecraftforge.fml.relauncher.FMLCorePlugin

[11:05:06] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker

[11:05:06] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.FMLDeobfTweaker

[11:05:06] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLInjectionAndSortingTweaker

[11:05:06] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.relauncher.CoreModManager$FMLPluginWrapper

[11:05:06] [main/ERROR] [FML]: The binary patch set is missing. Either you are in a development environment, or things are not going to work!

[11:05:08] [main/ERROR] [FML]: FML appears to be missing any signature data. This is not a good thing

[11:05:08] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.FMLDeobfTweaker

[11:05:09] [main/INFO] [LaunchWrapper]: Loading tweak class name net.minecraftforge.fml.common.launcher.TerminalTweaker

[11:05:09] [main/INFO] [LaunchWrapper]: Calling tweak class net.minecraftforge.fml.common.launcher.TerminalTweaker

[11:05:09] [main/INFO] [LaunchWrapper]: Launching wrapped minecraft {net.minecraft.client.main.Main}

[11:05:10] [Client thread/INFO]: Setting user: Player680

[11:05:10] [Client thread/INFO]: (Session ID is token:FML:Player680)

[11:05:14] [Client thread/INFO]: LWJGL Version: 2.9.1

[11:05:15] [Client thread/INFO] [MinecraftForge]: Attempting early MinecraftForge initialization

[11:05:15] [Client thread/INFO] [MinecraftForge]: Completed early MinecraftForge initialization

[11:05:15] [Client thread/INFO] [FML]: Searching C:\Users\Becky\Desktop\Forge ModLoader-1.8-8.0.20.1023-1.8-src\eclipse\mods for mods

[11:05:20] [Client thread/INFO] [FML]: Forge Mod Loader has identified 5 mods to load

[11:05:20] [Client thread/INFO] [FML]: Attempting connection with missing mods [mcp, FML, testmod01, oredetectmod, shelvesmod] at CLIENT

[11:05:20] [Client thread/INFO] [FML]: Attempting connection with missing mods [mcp, FML, testmod01, oredetectmod, shelvesmod] at SERVER

[11:05:20] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Test Mod 01, FMLFileResourcePack:Ore Detect Mod, FMLFileResourcePack:Shelves Mod

[11:05:21] [Client thread/INFO] [FML]: Processing ObjectHolder annotations

[11:05:21] [Client thread/INFO] [FML]: Found 384 ObjectHolder annotations

[11:05:21] [Client thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.GuiHandlerShelf:getGuiID:19]: Called method: GuiHandlerShelf.getGuiID

[11:05:21] [Client thread/INFO] [FML]: Applying holder lookups

[11:05:21] [Client thread/INFO] [FML]: Holder lookups applied

[11:05:22] [sound Library Loader/INFO]: Starting up SoundSystem...

[11:05:22] [Thread-7/INFO]: Initializing LWJGL OpenAL

[11:05:22] [Thread-7/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)

[11:05:23] [Thread-7/INFO]: OpenAL initialized.

[11:05:23] [sound Library Loader/INFO]: Sound engine started

[11:05:37] [Client thread/INFO]: Created: 512x512 textures-atlas

[11:05:38] [Client thread/INFO] [sTDOUT]: [com.becky.testmod01.Testmod01:postInit:142]: Called method: postInit

[11:05:38] [Client thread/INFO] [sTDOUT]: [com.rosecotton.oredetect.OreDetectMod:postInit:120]: Called method: postInit

[11:05:38] [Client thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.ShelvesMod:postInit:99]: Called method: postInit

[11:05:38] [Client thread/INFO] [FML]: Forge Mod Loader has successfully loaded 5 mods

[11:05:38] [Client thread/INFO]: Reloading ResourceManager: Default, FMLFileResourcePack:Forge Mod Loader, FMLFileResourcePack:Test Mod 01, FMLFileResourcePack:Ore Detect Mod, FMLFileResourcePack:Shelves Mod

[11:05:38] [Client thread/INFO]: SoundSystem shutting down...

[11:05:39] [Client thread/WARN]: Author: Paul Lamb, www.paulscode.com

[11:05:39] [sound Library Loader/INFO]: Starting up SoundSystem...

[11:05:39] [Thread-9/INFO]: Initializing LWJGL OpenAL

[11:05:39] [Thread-9/INFO]: (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)

[11:05:40] [Thread-9/INFO]: OpenAL initialized.

[11:05:40] [sound Library Loader/INFO]: Sound engine started

[11:05:41] [Client thread/INFO]: Created: 512x512 textures-atlas

[11:06:03] [server thread/INFO]: Starting integrated minecraft server version 1.8

[11:06:03] [server thread/INFO]: Generating keypair

[11:06:03] [server thread/INFO] [FML]: Injecting existing block and item data into this server instance

[11:06:03] [server thread/INFO] [FML]: Applying holder lookups

[11:06:03] [server thread/INFO] [FML]: Holder lookups applied

[11:06:03] [server thread/INFO]: Preparing start region for level 0

[11:06:04] [server thread/INFO]: Preparing spawn area: 44%

[11:06:06] [server thread/INFO]: Changing view distance to 8, from 10

[11:06:06] [Netty Local Client IO #0/INFO] [FML]: Server protocol version 1

[11:06:06] [Netty Server IO #1/INFO] [FML]: Client protocol version 1

[11:06:06] [Netty Server IO #1/INFO] [FML]: Client attempting to join with 5 mods : [email protected],[email protected],[email protected],[email protected],[email protected]

[11:06:06] [Netty Local Client IO #0/INFO] [FML]: [Netty Local Client IO #0] Client side modded connection established

[11:06:06] [server thread/INFO] [FML]: [server thread] Server side modded connection established

[11:06:06] [server thread/INFO]: Player680[local:E:bc663994] logged in with entity id 312 at (-231.85697573168673, 77.0, 61.09418574985075)

[11:06:07] [server thread/INFO]: Player680 joined the game

[11:06:09] [server thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.GuiHandlerShelf:getGuiID:19]: Called method: GuiHandlerShelf.getGuiID

[11:06:09] [server thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.GuiHandlerShelf:getServerGuiElement:33]: Called method: GuiHandlerShelf.getServerGuiElement return good stuff

[11:06:09] [Client thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.GuiHandlerShelf:getGuiID:19]: Called method: GuiHandlerShelf.getGuiID

[11:06:09] [Client thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.GuiHandlerShelf:getClientGuiElement:51]: Called method: GuiHandlerShelf.getClientGuiElement return good stuff

[11:06:09] [server thread/INFO] [sTDOUT]: [com.rosecotton.shelvesmod.BlockShelf:onBlockActivated:283]: Called method: BlockShelf.onBlockActivated

[11:06:09] [Client thread/FATAL] [FML]: Exception caught executing FutureTask: java.util.concurrent.ExecutionException: java.lang.NullPointerException

java.util.concurrent.ExecutionException: java.lang.NullPointerException

at java.util.concurrent.FutureTask.report(Unknown Source) ~[?:1.8.0_31]

at java.util.concurrent.FutureTask.get(Unknown Source) ~[?:1.8.0_31]

at net.minecraftforge.fml.common.FMLCommonHandler.callFuture(FMLCommonHandler.java:677) [FMLCommonHandler.class:?]

at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1006) [Minecraft.class:?]

at net.minecraft.client.Minecraft.run(Minecraft.java:346) [Minecraft.class:?]

at net.minecraft.client.main.Main.main(Main.java:117) [Main.class:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_31]

at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_31]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_31]

at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_31]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.11.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.11.jar:?]

at net.minecraftforge.gradle.GradleStartCommon.launch(GradleStartCommon.java:85) [start/:?]

at GradleStart.main(GradleStart.java:45) [start/:?]

Caused by: java.lang.NullPointerException

at com.rosecotton.shelvesmod.RenderShelfTileEntity.<init>(RenderShelfTileEntity.java:18) ~[RenderShelfTileEntity.class:?]

at com.rosecotton.shelvesmod.ShelfTitleEntity.setInventorySlotContents(ShelfTitleEntity.java:135) ~[shelfTitleEntity.class:?]

at net.minecraft.inventory.Slot.putStack(Slot.java:67) ~[slot.class:?]

at net.minecraft.inventory.Container.putStacksInSlots(Container.java:527) ~[Container.class:?]

at net.minecraft.client.network.NetHandlerPlayClient.handleWindowItems(NetHandlerPlayClient.java:1079) ~[NetHandlerPlayClient.class:?]

at net.minecraft.network.play.server.S30PacketWindowItems.func_180732_a(S30PacketWindowItems.java:61) ~[s30PacketWindowItems.class:?]

at net.minecraft.network.play.server.S30PacketWindowItems.processPacket(S30PacketWindowItems.java:72) ~[s30PacketWindowItems.class:?]

at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:18) ~[PacketThreadUtil$1.class:?]

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) ~[?:1.8.0_31]

at java.util.concurrent.FutureTask.run(Unknown Source) ~[?:1.8.0_31]

at net.minecraftforge.fml.common.FMLCommonHandler.callFuture(FMLCommonHandler.java:676) ~[FMLCommonHandler.class:?]

... 11 more