Faulty Terrain Scan

clowcadia · March 21, 2017

Working on a terrain scanner that starts scanning from a block position:1 north a east, b west & 2 south a east, b west for loop on directions (not sure its accuracy yet)

I have made a class for it as utility, where it checks each block position scanning if its in ground or in air. if its in ground it should go up through a loop in position coordinates till it it is no more ground and record the top gound(dirt/grass/stone), its its in the air(air/log/leaf) bring the position coordinates down till there is no more air and the under the last block of air record the ground block

Here is my git, and the specific method i am dealing with

and now ill show you what the problem is

[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:grass} POS BlockPos{x=90, y=63, z=257}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:dirt} POS BlockPos{x=94, y=63, z=257}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:stone} POS BlockPos{x=99, y=63, z=257}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:stone} POS BlockPos{x=105, y=63, z=257}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:stone} POS BlockPos{x=105, y=63, z=262}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:stone} POS BlockPos{x=104, y=63, z=262}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:stone} POS BlockPos{x=102, y=63, z=262}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:dirt} POS BlockPos{x=99, y=63, z=262}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:dirt} POS BlockPos{x=95, y=63, z=262}
[00:38:45] [Server thread/INFO] [testmod]:  BLOCK Block{minecraft:dirt} POS BlockPos{x=90, y=63, z=262}

I have checked where the stones are too, in-closed by dirt and grass

Edited March 21, 2017 by clowcadia
to note

Draco18s · March 21, 2017

There are so many things wrong here....Why are you using | instead of ||?

Anyway, your problem is thus:

1a. for(int u = 1;
 b.   isGround(pos.up(u));
 c.   u++){
2.         if(isAir(pos.up(u))) {
3.             floor = pos.up(u-1);
4.         }
5. }

Line 1a executes: u = 1

Line 1b executes: the block is dirt, returns true

Line 2 executes: returns false (it was ground, so it cannot be air)

Line 4 executes [end of loop, returning to top]

Line 1c executes: u = 2

Line 1b executes: the block is air, returns false

Line 5 executes [end of block]

And you would know this without wasting my time if:

a) you doodled on some paper and tried running through it yourself

b) you used the debugger that God gave you and watched your code execute

Edited March 21, 2017 by Draco18s

clowcadia · March 21, 2017

tried this bust still same result

for(int u = 1; isGround(pos.up(u)); u++){
                if(isAir(pos.up(u+1))) floor = pos.up(u);
            }

Draco18s · March 21, 2017

What happens if a block is neither air nor ground?

clowcadia · March 21, 2017

based on this, it should technically register as something.. though

private boolean isGround(BlockPos pos){
        return (getBlock(pos) == Blocks.DIRT || getBlock(pos) == Blocks.GRASS) || getBlock(pos) == Blocks.STONE;
    }
    
    private boolean isAir(BlockPos pos){
        return getBlock(pos).isAir(getIBS(pos),this.world,pos) ||
                ( getBlock(pos) == Blocks.LOG || getBlock(pos) == Blocks.LOG2) ||
                (getBlock(pos) == Blocks.LEAVES || getBlock(pos) == Blocks.LEAVES2);
    }

i am missing tall grass but yea

Jay Avery · March 21, 2017

6 minutes ago, clowcadia said:

based on this, it should technically register as something.. though


private boolean isGround(BlockPos pos){
        return (getBlock(pos) == Blocks.DIRT || getBlock(pos) == Blocks.GRASS) || getBlock(pos) == Blocks.STONE;
    }
    
    private boolean isAir(BlockPos pos){
        return getBlock(pos).isAir(getIBS(pos),this.world,pos) ||
                ( getBlock(pos) == Blocks.LOG || getBlock(pos) == Blocks.LOG2) ||
                (getBlock(pos) == Blocks.LEAVES || getBlock(pos) == Blocks.LEAVES2);
    }

i am missing tall grass but yea

What? This is a list of all vanilla blocks. You're missing more than just tall grass.

clowcadia · March 21, 2017

I know, i have a similar page open, but i am just testing it in somewhat controlled enviorment, its testing a 15x15 area in a forest, yes there are flowers but i dont think there is that many flowers to give me the results of air and stone of such amount

clowcadia · March 22, 2017

Question: can i edit code while i debug? with this specific situation

TheMasterGabriel · March 22, 2017

11 minutes ago, clowcadia said:

Question: can i edit code while i debug? with this specific situation

If you mean "Can I edit code while running the game", it depends on your IDE (but most of them have this feature). Eclipse has a little green beetle button next to the play button that runs the game in debug mode. While in debug mode, any non-breaking edits will be instantly noticeable in-game. If you make a breaking edit, Eclipse will tell you that you need to relaunch the game before the edit has an effect. I'm not sure about Intellij though.

Edited March 22, 2017 by TheMasterGabriel

Draco18s · March 22, 2017

Should be able to with IntelliJ too.

But yes, it depends on the IDE.

Mind, there are some bits of your code that even if you make non-breaking edits, won't affect the running code, because that part already ran and won't run again. E.g. changes to constructors, your main class, etc. The objects aren't reinitialized, just that their methods are updated.

clowcadia · March 22, 2017

yes just want to try and fix the issues, in my head sudo wise its meant to work right but i am missing something

Draco18s · March 22, 2017

1 hour ago, clowcadia said:

yes just want to try and fix the issues, in my head sudo wise its meant to work right but i am missing something

SUDO = Super User DO

Pseudo = "fake"

And yes, you are. You are incorrectly determining the end of the loop and the set-floor position booleans. If it finds a floor, then the loop exits, right? In which case make it so that when it sets the floor the loop exits. There's a dozen ways to do this and all of them fail proof. You're trying to use two checks that don't have an inverse relationship (i.e. isGround(state) == !isAir(state) is not true for all possible blockstates).

Again:

What happens if the column at the search location contains a tree? (Log on top of dirt)

Edited March 22, 2017 by Draco18s

clowcadia · March 22, 2017

When it is a tree like logs or leafs it identifies as air, should be the code if not that what i have edited to identify

Draco18s · March 23, 2017

How about tall grass?

Flowers?

Fences?

Farmland?

Cobblestone?

Gravel?

Sand?

Sandstone?

Water?

Snow?

Ice?

Arbitrary mod-added block?

Your if-statements are poorly defined as "isAir() == !isGround()" is not a tautology.

What happens if your code encounters a cave (stone, air, stone)?

clowcadia · March 27, 2017

finally solved the issue, but now i am goign to take ur advice on the rest of the forestry stuff

but i dont know how to find the flower block as

getBlock(pos) == BlockFlower.;

does not display options like Blocks. does

clowcadia · March 28, 2017

there is only 2 types of flowers they have other varients that make them up as different flowers, but in general all but one flower is REDFLOWER and the one is YELLOWFLOWER in the blocks

Draco18s · March 28, 2017

Surprise.

http://minecraft.gamepedia.com/Flower#Data_values

There's three.

Edited March 28, 2017 by Draco18s

clowcadia · March 28, 2017

thank you, i just ran into it, and discovered through console prompts. would u say a double plant is a 2 block plant/flower?

Draco18s · March 28, 2017

That's precisely what it is. A top half and a bottom half.

clowcadia · March 28, 2017

Damn it, now i got a crash from these 2 lines

82 20

[15:10:18] [Client thread/INFO] [testmod]: ItemTarget: onItemUse
[15:10:18] [Server thread/INFO] [testmod]: ItemTarget: onItemUse
[15:10:18] [Server thread/INFO] [testmod]: ItemTarget: onItemUse: 0
[15:10:20] [Server thread/INFO] [testmod]: Test: initEntityAI
[15:10:20] [Server thread/INFO] [testmod]: AIGoto: Constructor
[15:10:20] [Server thread/INFO] [testmod]: Test: writeEntityFromNBT
[15:10:20] [Server thread/INFO] [testmod]: Test: readEntityFromNBT
[15:10:21] [Client thread/INFO] [testmod]: Test: processInteract
[15:10:21] [Server thread/INFO] [testmod]: Test: processInteract
[15:10:21] [Server thread/INFO] [testmod]: GuiHandler: Constructor
[15:10:21] [Server thread/INFO] [testmod]: ContainerBasic: Constructor
[15:10:21] [Server thread/INFO] [testmod]: Test: getCapability
[15:10:21] [Client thread/INFO] [testmod]: GuiHandler: getClientGuiElement
[15:10:21] [Client thread/INFO] [testmod]: ContainerBasic: Constructor
[15:10:21] [Client thread/INFO] [testmod]: Test: getCapability
[15:10:21] [Client thread/INFO] [testmod]: GuiBasic: Constructor
[15:10:23] [Server thread/INFO] [testmod]: AIGoto: startExecuting
[15:10:23] [Server thread/INFO] [testmod]: SL2
[15:10:23] [Server thread/INFO] [testmod]: EL7
[15:10:23] [Server thread/INFO] [testmod]: NL1
[15:10:23] [Server thread/INFO] [testmod]: WL3
[15:10:24] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking entity
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:800) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:698) ~[MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156) ~[IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:547) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_121]
Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
	at java.util.ArrayList.rangeCheck(ArrayList.java:653) ~[?:1.8.0_121]
	at java.util.ArrayList.get(ArrayList.java:429) ~[?:1.8.0_121]
	at com.clowcadia.test.utils.TreeArea.<init>(TreeArea.java:20) ~[TreeArea.class:?]
	at com.clowcadia.test.entities.living.ai.AIGoto.updateTask(AIGoto.java:82) ~[AIGoto.class:?]
	at net.minecraft.entity.ai.EntityAITasks.onUpdateTasks(EntityAITasks.java:112) ~[EntityAITasks.class:?]
	at net.minecraft.entity.EntityLiving.updateEntityActionState(EntityLiving.java:845) ~[EntityLiving.class:?]
	at net.minecraft.entity.EntityLivingBase.onLivingUpdate(EntityLivingBase.java:2466) ~[EntityLivingBase.class:?]
	at net.minecraft.entity.EntityLiving.onLivingUpdate(EntityLiving.java:639) ~[EntityLiving.class:?]
	at net.minecraft.entity.EntityAgeable.onLivingUpdate(EntityAgeable.java:194) ~[EntityAgeable.class:?]
	at net.minecraft.entity.passive.EntityAnimal.onLivingUpdate(EntityAnimal.java:46) ~[EntityAnimal.class:?]
	at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:2292) ~[EntityLivingBase.class:?]
	at net.minecraft.entity.EntityLiving.onUpdate(EntityLiving.java:343) ~[EntityLiving.class:?]
	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2108) ~[World.class:?]
	at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:875) ~[WorldServer.class:?]
	at net.minecraft.world.World.updateEntity(World.java:2075) ~[World.class:?]
	at net.minecraft.world.World.updateEntities(World.java:1888) ~[World.class:?]
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:647) ~[WorldServer.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:794) ~[MinecraftServer.class:?]
	... 4 more
[15:10:24] [Server thread/ERROR]: This crash report has been saved to: C:\Users\Andre\OneDrive\Documents\Development\MinecraftForge\1.11\NPCTesting\run\.\crash-reports\crash-2017-03-28_15.10.24-server.txt
[15:10:24] [Server thread/INFO]: Stopping server
[15:10:24] [Client thread/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:600]: ---- Minecraft Crash Report ----
// Oops.

Time: 3/28/17 3:10 PM
Description: Ticking entity

java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
	at java.util.ArrayList.get(ArrayList.java:429)
	at com.clowcadia.test.utils.TreeArea.<init>(TreeArea.java:20)
	at com.clowcadia.test.entities.living.ai.AIGoto.updateTask(AIGoto.java:82)
	at net.minecraft.entity.ai.EntityAITasks.onUpdateTasks(EntityAITasks.java:112)
	at net.minecraft.entity.EntityLiving.updateEntityActionState(EntityLiving.java:845)
	at net.minecraft.entity.EntityLivingBase.onLivingUpdate(EntityLivingBase.java:2466)
	at net.minecraft.entity.EntityLiving.onLivingUpdate(EntityLiving.java:639)
	at net.minecraft.entity.EntityAgeable.onLivingUpdate(EntityAgeable.java:194)
	at net.minecraft.entity.passive.EntityAnimal.onLivingUpdate(EntityAnimal.java:46)
	at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:2292)
	at net.minecraft.entity.EntityLiving.onUpdate(EntityLiving.java:343)
	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2108)
	at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:875)
	at net.minecraft.world.World.updateEntity(World.java:2075)
	at net.minecraft.world.World.updateEntities(World.java:1888)
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:647)
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:794)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:698)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:547)
	at java.lang.Thread.run(Thread.java:745)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Thread: Client thread
Stacktrace:
	at java.util.ArrayList.rangeCheck(ArrayList.java:653)
	at java.util.ArrayList.get(ArrayList.java:429)
	at com.clowcadia.test.utils.TreeArea.<init>(TreeArea.java:20)
	at com.clowcadia.test.entities.living.ai.AIGoto.updateTask(AIGoto.java:82)
	at net.minecraft.entity.ai.EntityAITasks.onUpdateTasks(EntityAITasks.java:112)
	at net.minecraft.entity.EntityLiving.updateEntityActionState(EntityLiving.java:845)
	at net.minecraft.entity.EntityLivingBase.onLivingUpdate(EntityLivingBase.java:2466)
	at net.minecraft.entity.EntityLiving.onLivingUpdate(EntityLiving.java:639)
	at net.minecraft.entity.EntityAgeable.onLivingUpdate(EntityAgeable.java:194)
	at net.minecraft.entity.passive.EntityAnimal.onLivingUpdate(EntityAnimal.java:46)
	at net.minecraft.entity.EntityLivingBase.onUpdate(EntityLivingBase.java:2292)
	at net.minecraft.entity.EntityLiving.onUpdate(EntityLiving.java:343)
	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2108)
	at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:875)
	at net.minecraft.world.World.updateEntity(World.java:2075)

-- Entity being ticked --
Details:
	Entity Type: testmod:test (com.clowcadia.test.entities.living.Test)
	Entity ID: 7456
	Entity Name: entity.Test.name
	Entity's Exact location: 415.15, 68.00, 356.36
	Entity's Block location: World: (415,68,356), Chunk: (at 15,4,4 in 25,22; contains blocks 400,0,352 to 415,255,367), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Entity's Momentum: 0.01, -0.08, 0.01
	Entity's Passengers: []
	Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
	at net.minecraft.world.World.updateEntities(World.java:1888)
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:647)

-- Affected level --
Details:
	Level name: New World
	All players: 1 total; [EntityPlayerMP['Lynthos'/1688, l='New World', x=415.04, y=68.00, z=351.89]]
	Chunk stats: ServerChunkCache: 771 Drop: 0
	Level seed: 1643567088598055580
	Level generator: ID 00 - default, ver 1. Features enabled: false
	Level generator options: 
	Level spawn location: World: (224,64,248), Chunk: (at 0,4,8 in 14,15; contains blocks 224,0,240 to 239,255,255), Region: (0,0; contains chunks 0,0 to 31,31, blocks 0,0,0 to 511,255,511)
	Level time: 1205 game time, 1205 day time
	Level dimension: 0
	Level storage version: 0x04ABD - Anvil
	Level weather: Rain time: 36149 (now: false), thunder time: 92532 (now: false)
	Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:794)
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:698)
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:156)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:547)
	at java.lang.Thread.run(Thread.java:745)

-- System Details --
Details:
	Minecraft Version: 1.11.2
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 1.8.0_121, Oracle Corporation
	Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 237966296 bytes (226 MB) / 931135488 bytes (888 MB) up to 1871708160 bytes (1785 MB)
	JVM Flags: 0 total; 
	IntCache: cache: 0, tcache: 0, allocated: 13, tallocated: 95
	FML: MCP 9.38 Powered by Forge 13.20.0.2228 5 mods loaded, 5 mods active
	States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored
	UCHIJAAAA	minecraft{1.11.2} [Minecraft] (minecraft.jar) 
	UCHIJAAAA	mcp{9.19} [Minecraft Coder Pack] (minecraft.jar) 
	UCHIJAAAA	FML{8.0.99.99} [Forge Mod Loader] (forgeSrc-1.11.2-13.20.0.2228.jar) 
	UCHIJAAAA	forge{13.20.0.2228} [Minecraft Forge] (forgeSrc-1.11.2-13.20.0.2228.jar) 
	UCHIJAAAA	testmod{1.0.0} [Test Mod] (NPCTesting_main) 
	Loaded coremods (and transformers): 
	GL info: ~~ERROR~~ RuntimeException: No OpenGL context found in the current thread.
	Profiler Position: N/A (disabled)
	Player Count: 1 / 8; [EntityPlayerMP['Lynthos'/1688, l='New World', x=415.04, y=68.00, z=351.89]]
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'fml,forge'
[15:10:24] [Server thread/INFO]: Saving players
[15:10:24] [Client thread/INFO] [STDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:600]: #@!@# Game crashed! Crash report saved to: #@!@# .\crash-reports\crash-2017-03-28_15.10.24-server.txt
[15:10:24] [Client thread/INFO] [FML]: Waiting for the server to terminate/save.
[15:10:24] [Server thread/INFO]: Saving worlds
[15:10:24] [Server thread/INFO]: Saving chunks for level 'New World'/Overworld
[15:10:24] [Server thread/INFO] [testmod]: Test: writeEntityFromNBT
[15:10:24] [Server thread/INFO]: Saving chunks for level 'New World'/Nether
[15:10:24] [Server thread/INFO]: Saving chunks for level 'New World'/The End
[15:10:24] [Server thread/INFO] [FML]: Unloading dimension 0
[15:10:24] [Server thread/INFO] [FML]: Unloading dimension -1
[15:10:24] [Server thread/INFO] [FML]: Unloading dimension 1
[15:10:24] [Server thread/INFO] [FML]: Applying holder lookups
[15:10:24] [Server thread/INFO] [FML]: Holder lookups applied
[15:10:24] [Server thread/INFO] [FML]: The state engine was in incorrect state SERVER_STOPPING and forced into state SERVER_STOPPED. Errors may have been discarded.
[15:10:24] [Client thread/INFO] [FML]: Server terminated.
[15:10:24] [Client Shutdown Thread/INFO]: Stopping server
[15:10:24] [Client Shutdown Thread/INFO]: Saving players
AL lib: (EE) alc_cleanup: 1 device not closed

Process finished with exit code -1

Jay Avery · March 28, 2017

1 hour ago, clowcadia said:


java.lang.IndexOutOfBoundsException: Index: 1, Size: 1
...
	at com.clowcadia.test.utils.TreeArea.<init>(TreeArea.java:20)

Reading crash reports is not that much of a mystery. In line 20 of your TreeArea class, you are trying to get the 1 index of an ArrayList which only contains one element (and therefore no 1 index).

Edited March 28, 2017 by Jay Avery

clowcadia · March 28, 2017

i tried index 0 and it does not have that either

clowcadia · March 28, 2017

also did this

if(treeRoots.get(0)!=null){
trArea = new TreeArea(treeRoots);
new LumberJack(world, getRootPos(),
trArea.zNBorder, trArea.xNBorder, trArea.zPBorder, trArea.xPBorder);
}

still has crash

https://github.com/Clowcadia/MinecraftForge/blob/master/1.11/NPCTesting/src/main/java/com/clowcadia/test/entities/living/ai/AIGoto.java#L77-L81

Edited March 28, 2017 by clowcadia

Jay Avery · March 28, 2017

Well, the crash report says the ArrayList is size one, which means it did have a 0 index. But if it doesn't, that means you're trying to call it on an empty ArrayList. Post the code where you create and use the list.

Jay Avery · March 28, 2017

2 minutes ago, clowcadia said:

if(treeRoots.get(0)!=null){

The crash is caused by calling get, a null check won't help because it happens after the method is called.

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