Minecraft Forums

Quote from Technofreak301

Can someone please tell me how to add special AI and abilities to a mob? Like, by giving me a sample of the right code? I can't use MCP because I can't get it t work, so I can't decompile and simply look in the source files. I can't recompile either.

//below this is all the AI tasks that specify how the mob will behave mess around with it to see what happens
    this.tasks.addTask(0, new EntityAISwimming(this));
    this.tasks.addTask(1, new EntityAIAttackOnCollide(this, EntityPlayer.class, this.moveSpeed, false));
    this.tasks.addTask(2, new EntityAIMoveTwardsRestriction(this, this.moveSpeed));
    this.tasks.addTask(3, new EntityAIWander(this, this.moveSpeed));
    this.tasks.addTask(4, new EntityAILookIdle(this));
    this.tasks.addTask(5, new EntityAIAttackOnCollide(this, EntityLiving.class, this.moveSpeed, false));
    this.targetTasks.addTask(0, new EntityAIHurtByTarget(this, false));
    this.targetTasks.addTask(1, new EntityAINearestAttackableTarget(this, EntityLiving.class, 16.0F, 0, false, true, IMob.field_82192_a));
//end of AI tasks

joejoejoe3 said:

//below this is all the AI tasks that specify how the mob will behave mess around with it to see what happens
this.tasks.addTask(0, new EntityAISwimming(this));
this.tasks.addTask(1, new EntityAIAttackOnCollide(this, EntityPlayer.class, this.moveSpeed, false));
this.tasks.addTask(2, new EntityAIMoveTwardsRestriction(this, this.moveSpeed));
this.tasks.addTask(3, new EntityAIWander(this, this.moveSpeed));
this.tasks.addTask(4, new EntityAILookIdle(this));
this.tasks.addTask(5, new EntityAIAttackOnCollide(this, EntityLiving.class, this.moveSpeed, false));
this.targetTasks.addTask(0, new EntityAIHurtByTarget(this, false));
this.targetTasks.addTask(1, new EntityAINearestAttackableTarget(this, EntityLiving.class, 16.0F, 0, false, true, IMob.field_82192_a));
//end of AI tasks

Quote from vk222u

I have Redone the Code to your Guide

mod_Block.java

package net.minecraft.src;

public class mod_Block extends BaseMod
{
public static final Block Marble = new BlockMarble(160, 0).setBlockName("Stone").setHardness(3F).setResistance(4F).setLightValue(1F)
.setCreativeTab(CreativeTabs.tabBlock).setStepSound(Block.soundStoneFootstep);
public void load()
{
Marble.blockIndexInTexture = ModLoader.addOverride("/terrain.png", "/mods/marble.png");
ModLoader.registerBlock(Marble);
ModLoader.addName(Marble, "Marble");
}
public String getVersion()
{
return "1.4.2";
}

}

BlockMarble.java

package net.minecraft.src;
import java.util.Random;
public class BlockMarble extends Block
{
public BlockMarble(int i, int j)
{
super(i, j, Material.wood);
}
public int idDropped(int i, Random random, int j)
{
return mod_Block.Marble.blockID;
}
public int quantityDropped(Random random)
{
return 1;
}
}

and now my problem is that it says it can not find the image,
here is the directory to were my image is placed:
mcp\eclipse\Client\bin\mods\marble.png

Here is the crash error:

---- Minecraft Crash Report ----
// I blame Dinnerbone.

Time: 6/11/12 10:40 AM
Description: Unexpected error

java.lang.RuntimeException: java.lang.Exception: Image not found: /mods/marble.png
at net.minecraft.src.ModLoader.registerAllTextureOverrides(ModLoader.java:1638)
at net.minecraft.src.ModLoader.onTick(ModLoader.java:1194)
at net.minecraft.src.EntityRendererProxy.updateCameraAndRender(EntityRendererProxy.java:21)
at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:868)
at net.minecraft.client.Minecraft.run(Minecraft.java:764)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.Exception: Image not found: /mods/marble.png
at net.minecraft.src.ModLoader.loadImage(ModLoader.java:1111)
at net.minecraft.src.ModLoader.registerAllTextureOverrides(ModLoader.java:1630)
... 5 more

Relevant Details:
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_09, Oracle Corporation
- Java VM Version: Java HotSpot™ 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 903735800 bytes (861 MB) / 1037959168 bytes (989 MB) up to 1037959168 bytes (989 MB)
- JVM Flags: 3 total; -Xincgc -Xms1024M -Xmx1024M
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- ModLoader: Mods loaded: 2
ModLoader 1.4.2
mod_Block 1.4.2

- LWJGL: 2.4.2
- OpenGL: GeForce GTX 560 Ti/PCIe/SSE2 GL version 4.2.0, NVIDIA Corporation
- Is Modded: Very likely
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- Vec3 Pool Size: ~ERROR~ NullPointerException: null

Quote from xCrYpTiCzz

try the "/terrain /foldername/texturename" first

Quote from Dylpickle373

Could you add another tutorial showing how to make a new bow and arrow? For instance a bow that goes double the length of a normal bow, double the strength and double the durability.

Quote from ToxicWulf

I am getting this strange Forge error even though im using Modloader, Even in the code you can see that it should work with modloader since it uses modloader. It works fine in the eclipse client but not in the real game.

mod_CommonMushroomBiome.java

package net.minecraft.src;
public class mod_CommonMushroomBiome extends BaseMod
{
public static final BiomeGenBase MushroomBiome = (new BiomeGenMushroom(25)).setColor(0xffffff).setBiomeName("Common Mushroom Biome");
public void load()
{
ModLoader.addBiome(MushroomBiome);
}
public String getVersion()
{
return "Common Mushroom Biomes 1.4.2";
}
}

BiomeGenMushroom.java

package net.minecraft.src;
public class BiomeGenMushroom extends BiomeGenBase
{
public BiomeGenMushroom(int par1)
{
super(par1);
spawnableCreatureList.clear();
this.topBlock = (byte)Block.mycelium.blockID;
this.fillerBlock = (byte)Block.dirt.blockID;
this.theBiomeDecorator.treesPerChunk = -100;
this.theBiomeDecorator.flowersPerChunk = -100;
this.theBiomeDecorator.grassPerChunk = -100;
this.theBiomeDecorator.mushroomsPerChunk = 1;
this.theBiomeDecorator.bigMushroomsPerChunk = 1;
this.spawnableMonsterList.clear();
this.spawnableCreatureList.clear();
this.spawnableWaterCreatureList.clear();
this.spawnableCreatureList.add(new SpawnListEntry(EntityMooshroom.class, 8, 4, 8));
}
}

GuiIngameMenu.java

package net.minecraft.src;
public class GuiIngameMenu extends GuiScreen
{
/** Also counts the number of updates, not certain as to why yet. */
private int updateCounter2 = 0;
/** Counts the number of screen updates. */
private int updateCounter = 0;
/**
	 * Adds the buttons (and other controls) to the screen in question.
	 */
public void initGui()
{
	 this.updateCounter2 = 0;
	 this.controlList.clear();
	 byte var1 = -16;
	 this.controlList.add(new GuiButton(1, this.width / 2 - 100, this.height / 4 + 120 + var1, StatCollector.translateToLocal("menu.returnToMenu")));
	 if (!this.mc.isIntegratedServerRunning())
	 {
		 ((GuiButton)this.controlList.get(0)).displayString = StatCollector.translateToLocal("menu.disconnect");
	 }
	 this.controlList.add(new GuiButton(4, this.width / 2 - 100, this.height / 4 + 24 + var1, StatCollector.translateToLocal("menu.returnToGame")));
	 this.controlList.add(new GuiButton(0, this.width / 2 - 100, this.height / 4 + 96 + var1, 98, 20, StatCollector.translateToLocal("menu.options")));
	 GuiButton var3;
	 this.controlList.add(var3 = new GuiButton(7, this.width / 2 + 2, this.height / 4 + 96 + var1, 98, 20, StatCollector.translateToLocal("menu.shareToLan")));
	 this.controlList.add(new GuiButton(5, this.width / 2 - 100, this.height / 4 + 48 + var1, 98, 20, StatCollector.translateToLocal("gui.achievements")));
	 this.controlList.add(new GuiButton(6, this.width / 2 + 2, this.height / 4 + 48 + var1, 98, 20, StatCollector.translateToLocal("gui.stats")));
	 this.controlList.add(new GuiButton(8, this.width / 2 - 100, this.height / 4 + 72 + var1, StatCollector.translateToLocal("Common Mushroom Biomes Mod Info")));
	 var3.enabled = this.mc.isSingleplayer() && !this.mc.getIntegratedServer().getPublic();
}
/**
	 * Fired when a control is clicked. This is the equivalent of ActionListener.actionPerformed(ActionEvent e).
	 */
protected void actionPerformed(GuiButton par1GuiButton)
{
	 switch (par1GuiButton.id)
	 {
		 case 0:
			 this.mc.displayGuiScreen(new GuiOptions(this, this.mc.gameSettings));
			 break;
		 case 1:
			 par1GuiButton.enabled = false;
			 this.mc.statFileWriter.readStat(StatList.leaveGameStat, 1);
			 this.mc.theWorld.sendQuittingDisconnectingPacket();
			 this.mc.loadWorld((WorldClient)null);
			 this.mc.displayGuiScreen(new GuiMainMenu());
		 case 2:
		 case 3:
		 default:
			 break;
		 case 4:
			 this.mc.displayGuiScreen((GuiScreen)null);
			 this.mc.setIngameFocus();
			 this.mc.sndManager.func_82461_f();
			 break;
		 case 5:
			 this.mc.displayGuiScreen(new GuiAchievements(this.mc.statFileWriter));
			 break;
		 case 6:
			 this.mc.displayGuiScreen(new GuiStats(this, this.mc.statFileWriter));
			 break;
		 case 7:
			 this.mc.displayGuiScreen(new GuiShareToLan(this));
			
		 case 8:
			 this.mc.displayGuiScreen(new GuiHelp());
	 }
}
/**
	 * Called from the main game loop to update the screen.
	 */
public void updateScreen()
{
	 super.updateScreen();
	 ++this.updateCounter;
}
/**
	 * Draws the screen and all the components in it.
	 */
public void drawScreen(int par1, int par2, float par3)
{
	 this.drawDefaultBackground();
	 this.drawCenteredString(this.fontRenderer, "Game menu", this.width / 2, 40, 16777215);
	 super.drawScreen(par1, par2, par3);
}
}

GuiHelp.java

package net.minecraft.src;
public class GuiHelp extends GuiScreen{
public GuiHelp() {

}
public void initGui() {
this.controlList.clear();
byte var1 = -16;
this.controlList.add(new GuiButton(4, this.width / 2 - 100, this.height / 4 + 104 + var1, StatCollector.translateToLocal("menu.returnToGame")));

}
protected void actionPerformed(GuiButton par1GuiButton)
{
switch (par1GuiButton.id)
{
	 case 4:
		 this.mc.displayGuiScreen((GuiScreen)null);
		 this.mc.setIngameFocus();
		 this.mc.sndManager.func_82461_f();
		 break;
}
}
public void updateScreen() {
super.updateScreen();
}
public void drawScreen(int par1, int par2, float par3) {
this.drawDefaultBackground();
this.drawCenteredString(fontRenderer, "Common Mushroom Biomes Mod", width / 2, 30, 0x00FF00);
this.drawCenteredString(fontRenderer, "This mod just makes it so that mushroom biomes are generated more often.", width / 2, 50, 0x00FFFF);
this.drawCenteredString(fontRenderer, "If you have any reports post them on the PlanetMinecraft page.", width / 2, 70, 0x00FFFF);
this.drawCenteredString(fontRenderer, "This mod should work with any other mod but I'm not 100% sure so just tell me", width / 2, 90, 0x00FFFF);
this.drawCenteredString(fontRenderer, "if there are any mods that don't work with this one.", width / 2, 110, 0x00FFFF);
this.drawCenteredString(fontRenderer, "Mod Made By TempestCraft at PlanetMinecraft!", width / 2, 130, 0xFF0000);
super.drawScreen(par1, par2, par3);
}
}

Error

	 Minecraft has crashed!	
	 ----------------------	
Minecraft has stopped running because it encountered a problem; Exception occured in ModLoader
This error has been saved to C:\Users\******\AppData\Roaming\.minecraft\crash-reports\crash-2012-11-10_05.19.20-client.txt for your convenience. Please include a copy of this file if you report this crash to anyone.

--- BEGIN ERROR REPORT 2a4c2e8b --------
Generated 10/11/12 5:19 AM
- Minecraft Version: 1.4.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.6.0_31, Sun Microsystems Inc.
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Sun Microsystems Inc.
- Memory: 880346512 bytes (839 MB) / 1029046272 bytes (981 MB) up to 1908932608 bytes (1820 MB)
- JVM Flags: 2 total; -Xmx2048m -Xms1024m
- AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
- ModLoader: Mods loaded: 2
ModLoader 1.4.2
mod_CommonMushroomBiome Common Mushroom Biomes 1.4.2

java.lang.NoClassDefFoundError: forge/ICustomItemRenderer
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(Unknown Source)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at ModLoader.addMod(ModLoader.java:367)
at ModLoader.readFromModFolder(ModLoader.java:1381)
at ModLoader.init(ModLoader.java:901)
at ModLoader.addAllRenderers(ModLoader.java:215)
at azw.<init>(RenderManager.java:92)
at azw.<clinit>(RenderManager.java:14)
at net.minecraft.client.Minecraft.a(SourceFile:259)
at net.minecraft.client.Minecraft.run(SourceFile:515)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: forge.ICustomItemRenderer
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 20 more
--- END ERROR REPORT 75f3f4f5 ----------