Minecraft Forums

Quote from microjunk

Never mind people, I figured it me self. The answer was in the boat code combined with a little of this and a little of that from the minecart.

package YOURMODNAME;
import net.minecraft.creativetab.CreativeTabs;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.Item;
import net.minecraft.item.ItemStack;
import net.minecraft.world.World;
public class Itemgrenade extends Item
{
         public Itemgrenade(int i)
         {
                         super(i);
                         this.maxStackSize = 4;
                         this.setCreativeTab(CreativeTabs.tabMisc);
         }

         public ItemStack onItemRightClick(ItemStack var1, World var2, EntityPlayer var3)
         {
                         if (!var3.capabilities.isCreativeMode)
                         {
                                         --var1.stackSize;
                         }
                         var2.playSoundAtEntity(var3, "random.bow", 0.5F, 0.4F / (itemRand.nextFloat() * 0.4F + 0.8F));
                         if (!var2.isRemote)
                         {
                                         var2.spawnEntityInWorld(new Entitygrenade(var2, var3));
                         }
                         return var1;
         }
         public String getTextureFile()
         {
                 return "/YOURTEXTURE.png";
         }

}

package YOUMODNAME;
import org.lwjgl.opengl.GL11;
import org.lwjgl.opengl.GL12;
import net.minecraft.client.renderer.Tessellator;
import net.minecraft.client.renderer.entity.Render;
import net.minecraft.entity.Entity;
public class RenderGrenade extends Render
{
/**
         * Have the icon index (in items.png) that will be used to render the image. Currently, eggs and snowballs uses this
         * classes.
         */
private int itemIconIndex;
public RenderGrenade(int par1)
{
         this.itemIconIndex = par1;
}
/**
         * Actually renders the given argument. This is a synthetic bridge method, always casting down its argument and then
         * handing it off to a worker function which does the actual work. In all probabilty, the class Render is generic
         * (Render<T extends Entity) and this method has signature public void doRender(T entity, double d, double d1,
         * double d2, float f, float f1). But JAD is pre 1.5 so doesn't do that.
         */
public void doRender(Entity par1Entity, double par2, double par4, double par6, float par8, float par9)
{
         GL11.glPushMatrix();
         GL11.glTranslatef((float)par2, (float)par4, (float)par6);
         GL11.glEnable(GL12.GL_RESCALE_NORMAL);
         GL11.glScalef(0.5F, 0.5F, 0.5F);
         this.loadTexture("/YOURMODTEXTURE.png");
         Tessellator var10 = Tessellator.instance;
         this.func_77026_a(var10, this.itemIconIndex);
         GL11.glDisable(GL12.GL_RESCALE_NORMAL);
         GL11.glPopMatrix();
}
private void func_77026_a(Tessellator par1Tessellator, int par2)
{
         float var3 = (float)(par2 % 16 * 16 + 0) / 256.0F;
         float var4 = (float)(par2 % 16 * 16 + 16) / 256.0F;
         float var5 = (float)(par2 / 16 * 16 + 0) / 256.0F;
         float var6 = (float)(par2 / 16 * 16 + 16) / 256.0F;
         float var7 = 1.0F;
         float var8 = 0.5F;
         float var9 = 0.25F;
         GL11.glRotatef(180.0F - this.renderManager.playerViewY, 0.0F, 1.0F, 0.0F);
         GL11.glRotatef(-this.renderManager.playerViewX, 1.0F, 0.0F, 0.0F);
         par1Tessellator.startDrawingQuads();
         par1Tessellator.setNormal(0.0F, 1.0F, 0.0F);
         par1Tessellator.addVertexWithUV((double)(0.0F - var8), (double)(0.0F - var9), 0.0D, (double)var3, (double)var6);
         par1Tessellator.addVertexWithUV((double)(var7 - var8), (double)(0.0F - var9), 0.0D, (double)var4, (double)var6);
         par1Tessellator.addVertexWithUV((double)(var7 - var8), (double)(var7 - var9), 0.0D, (double)var4, (double)var5);
         par1Tessellator.addVertexWithUV((double)(0.0F - var8), (double)(var7 - var9), 0.0D, (double)var3, (double)var5);
         par1Tessellator.draw();
}
}

package YOURMODNAME;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.projectile.EntityThrowable;
import net.minecraft.util.DamageSource;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.world.World;
public class Entitygrenade extends Entitybombthrow //make a class called Entitybombthrow
{
private static final int var2 = 0;
private EntityLiving thrower;
         public Entitygrenade(World var1)
         {
                         super(var1);
         }
         public Entitygrenade(World var1, EntityLiving var2)
         {
                         super(var1, var2);
         }
         public Entitygrenade(World var1, double var2, double var4, double var6)
         {
                         super(var1, var2, var4, var6);
         }
         /**
                 * Called when this EntityThrowable hits a block or entity.
                 */
         protected void onImpact(MovingObjectPosition var1)
         {
                         if (var1.entityHit != null)
                         {

                                         {

                                         }
                                         if (!var1.entityHit.attackEntityFrom(DamageSource.causeThrownDamage(this, this.thrower), var2))
                                         {
                                                         ;
                                         }
                         }
                         for (int var3 = 0; var3 < 8; ++var3)
                         {
                                         this.worldObj.spawnParticle("smoke", this.posX, this.posY, this.posZ, 0.0D, 0.0D, 0.0D);

                         }
                         if (!this.worldObj.isRemote)
                         {
                                         this.setDead();
                                         if (!this.worldObj.isRemote)
                                         {
                                                         this.worldObj.createExplosion((Entity)null, this.posX, this.posY, this.posZ, 2.0F, true);
                                         }
                         }
         }

         public String getTextureFile()
         {
                 return "/YOURMODTEXTURE.png";
         }

}

RenderingRegistry.registerEntityRenderingHandler(Entitygrenade.class, new RenderGrenade(20));

EntityRegistry.registerModEntity(Entitygrenade.class, "Grenade", 4020, this, 8, 1, true);

package YOURMODNAME;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import java.util.List;
import net.minecraft.block.Block;
import net.minecraft.entity.Entity;
import net.minecraft.entity.EntityLiving;
import net.minecraft.entity.IProjectile;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.util.AxisAlignedBB;
import net.minecraft.util.EnumMovingObjectType;
import net.minecraft.util.MathHelper;
import net.minecraft.util.MovingObjectPosition;
import net.minecraft.util.Vec3;
import net.minecraft.world.World;
public abstract class Entitybombthrow extends Entity implements IProjectile
{
    private int xTile = -1;
    private int yTile = -1;
    private int zTile = -1;
    private int inTile = 0;
    protected boolean inGround = false;
    public int throwableShake = 0;
    /**
     * Is the entity that throws this 'thing' (snowball, ender pearl, eye of ender or potion)
     */
    private EntityLiving thrower;
    private String throwerName = null;
    private int ticksInGround;
    private int ticksInAir = 0;
    public Entitybombthrow(World par1World)
    {
        super(par1World);
        this.setSize(0.25F, 0.25F);
    }
    protected void entityInit() {}
    @SideOnly(Side.CLIENT)
    /**
     * Checks if the entity is in range to render by using the past in distance and comparing it to its average edge
     * length * 64 * renderDistanceWeight Args: distance
     */
    public boolean isInRangeToRenderDist(double par1)
    {
        double var3 = this.boundingBox.getAverageEdgeLength() * 4.0D;
        var3 *= 64.0D;
        return par1 < var3 * var3;
    }
    public Entitybombthrow(World par1World, EntityLiving par2EntityLiving)
    {
        super(par1World);
        this.thrower = par2EntityLiving;
        this.setSize(0.25F, 0.25F);
        this.setLocationAndAngles(par2EntityLiving.posX, par2EntityLiving.posY + (double)par2EntityLiving.getEyeHeight(), par2EntityLiving.posZ, par2EntityLiving.rotationYaw, par2EntityLiving.rotationPitch);
        this.posX -= (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
        this.posY -= 0.10000000149011612D;
        this.posZ -= (double)(MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * 0.16F);
        this.setPosition(this.posX, this.posY, this.posZ);
        this.yOffset = 0.0F;
        float var3 = 0.4F;
        this.motionX = (double)(-MathHelper.sin(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI) * var3);
        this.motionZ = (double)(MathHelper.cos(this.rotationYaw / 180.0F * (float)Math.PI) * MathHelper.cos(this.rotationPitch / 180.0F * (float)Math.PI) * var3);
        this.motionY = (double)(-MathHelper.sin((this.rotationPitch + this.func_70183_g()) / 180.0F * (float)Math.PI) * var3);
        this.setThrowableHeading(this.motionX, this.motionY, this.motionZ, this.func_70182_d(), 1.0F);
    }
    public Entitybombthrow(World par1World, double par2, double par4, double par6)
    {
        super(par1World);
        this.ticksInGround = 0;
        this.setSize(0.25F, 0.25F);
        this.setPosition(par2, par4, par6);
        this.yOffset = 0.0F;
    }
    protected float func_70182_d()
    {
        return 1.5F;
    }
    protected float func_70183_g()
    {
        return 0.0F;
    }
    /**
     * Similar to setArrowHeading, it's point the throwable entity to a x, y, z direction.
     */
    public void setThrowableHeading(double par1, double par3, double par5, float par7, float par8)
    {
        float var9 = MathHelper.sqrt_double(par1 * par1 + par3 * par3 + par5 * par5);
        par1 /= (double)var9;
        par3 /= (double)var9;
        par5 /= (double)var9;
        par1 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
        par3 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
        par5 += this.rand.nextGaussian() * 0.007499999832361937D * (double)par8;
        par1 *= (double)par7;
        par3 *= (double)par7;
        par5 *= (double)par7;
        this.motionX = par1;
        this.motionY = par3;
        this.motionZ = par5;
        float var10 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
        this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
        this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var10) * 180.0D / Math.PI);
        this.ticksInGround = 0;
    }
    @SideOnly(Side.CLIENT)
    /**
     * Sets the velocity to the args. Args: x, y, z
     */
    public void setVelocity(double par1, double par3, double par5)
    {
        this.motionX = par1;
        this.motionY = par3;
        this.motionZ = par5;
        if (this.prevRotationPitch == 0.0F && this.prevRotationYaw == 0.0F)
        {
            float var7 = MathHelper.sqrt_double(par1 * par1 + par5 * par5);
            this.prevRotationYaw = this.rotationYaw = (float)(Math.atan2(par1, par5) * 180.0D / Math.PI);
            this.prevRotationPitch = this.rotationPitch = (float)(Math.atan2(par3, (double)var7) * 180.0D / Math.PI);
        }
    }
    /**
     * Called to update the entity's position/logic.
     */
    public void onUpdate()
    {
        this.lastTickPosX = this.posX;
        this.lastTickPosY = this.posY;
        this.lastTickPosZ = this.posZ;
        super.onUpdate();
        if (this.throwableShake > 0)
        {
            --this.throwableShake;
        }
        if (this.inGround)
        {
            int var1 = this.worldObj.getBlockId(this.xTile, this.yTile, this.zTile);
            if (var1 == this.inTile)
            {
                ++this.ticksInGround;

                {
                    float var11 = 4.0F;
                    this.worldObj.createExplosion((Entity)null, this.posX, this.posY, this.posZ, var11, true);
                }
                if (this.ticksInGround == 1200)
                {
                    this.setDead();
                }
                return;
            }
            this.inGround = false;
            this.motionX *= (double)(this.rand.nextFloat() * 0.2F);
            this.motionY *= (double)(this.rand.nextFloat() * 0.2F);
            this.motionZ *= (double)(this.rand.nextFloat() * 0.2F);
            this.ticksInGround = 0;
            this.ticksInAir = 0;
        }
        else
        {
            ++this.ticksInAir;
        }
        Vec3 var16 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
        Vec3 var2 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
        MovingObjectPosition var3 = this.worldObj.rayTraceBlocks(var16, var2);
        var16 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX, this.posY, this.posZ);
        var2 = this.worldObj.getWorldVec3Pool().getVecFromPool(this.posX + this.motionX, this.posY + this.motionY, this.posZ + this.motionZ);
        if (var3 != null)
        {
            var2 = this.worldObj.getWorldVec3Pool().getVecFromPool(var3.hitVec.xCoord, var3.hitVec.yCoord, var3.hitVec.zCoord);
        }
        if (!this.worldObj.isRemote)
        {
            Entity var4 = null;
            List var5 = this.worldObj.getEntitiesWithinAABBExcludingEntity(this, this.boundingBox.addCoord(this.motionX, this.motionY, this.motionZ).expand(1.0D, 1.0D, 1.0D));
            double var6 = 0.0D;
            EntityLiving var8 = this.getThrower();
            for (int var9 = 0; var9 < var5.size(); ++var9)
            {
                Entity var10 = (Entity)var5.get(var9);
                if (var10.canBeCollidedWith() && (var10 != var8 || this.ticksInAir >= 5))
                {
                    float var11 = 0.3F;
                    AxisAlignedBB var12 = var10.boundingBox.expand((double)var11, (double)var11, (double)var11);
                    MovingObjectPosition var13 = var12.calculateIntercept(var16, var2);
                    if (var13 != null)
                    {
                        double var14 = var16.distanceTo(var13.hitVec);
                        if (var14 < var6 || var6 == 0.0D)
                        {
                            var4 = var10;
                            var6 = var14;
                        }
                    }
                }
            }
            if (var4 != null)
            {
                var3 = new MovingObjectPosition(var4);
            }
        }
        if (var3 != null)
        {
            if (var3.typeOfHit == EnumMovingObjectType.TILE && this.worldObj.getBlockId(var3.blockX, var3.blockY, var3.blockZ) == Block.portal.blockID)
            {
                this.setInPortal();
            }
            else
            {
                this.onImpact(var3);
            }
        }
        this.posX += this.motionX;
        this.posY += this.motionY;
        this.posZ += this.motionZ;
        float var17 = MathHelper.sqrt_double(this.motionX * this.motionX + this.motionZ * this.motionZ);
        this.rotationYaw = (float)(Math.atan2(this.motionX, this.motionZ) * 180.0D / Math.PI);
        for (this.rotationPitch = (float)(Math.atan2(this.motionY, (double)var17) * 180.0D / Math.PI); this.rotationPitch - this.prevRotationPitch < -180.0F; this.prevRotationPitch -= 360.0F)
        {
            ;
        }
        while (this.rotationPitch - this.prevRotationPitch >= 180.0F)
        {
            this.prevRotationPitch += 360.0F;
        }
        while (this.rotationYaw - this.prevRotationYaw < -180.0F)
        {
            this.prevRotationYaw -= 360.0F;
        }
        while (this.rotationYaw - this.prevRotationYaw >= 180.0F)
        {
            this.prevRotationYaw += 360.0F;
        }
        this.rotationPitch = this.prevRotationPitch + (this.rotationPitch - this.prevRotationPitch) * 0.2F;
        this.rotationYaw = this.prevRotationYaw + (this.rotationYaw - this.prevRotationYaw) * 0.2F;
        float var18 = 0.99F;
        float var19 = this.getGravityVelocity();
        if (this.isInWater())
        {
            for (int var7 = 0; var7 < 4; ++var7)
            {
                float var20 = 0.25F;
                this.worldObj.spawnParticle("bubble", this.posX - this.motionX * (double)var20, this.posY - this.motionY * (double)var20, this.posZ - this.motionZ * (double)var20, this.motionX, this.motionY, this.motionZ);
            }
            var18 = 0.8F;
        }
        this.motionX *= (double)var18;
        this.motionY *= (double)var18;
        this.motionZ *= (double)var18;
        this.motionY -= (double)var19;
        this.setPosition(this.posX, this.posY, this.posZ);
    }
    /**
     * Gets the amount of gravity to apply to the thrown entity with each tick.
     */
    protected float getGravityVelocity()
    {
        return 0.03F;
    }
    /**
     * Called when this EntityThrowable hits a block or entity.
     */
    protected abstract void onImpact(MovingObjectPosition var1);
    /**
     * (abstract) Protected helper method to write subclass entity data to NBT.
     */
    public void writeEntityToNBT(NBTTagCompound par1NBTTagCompound)
    {
        par1NBTTagCompound.setShort("xTile", (short)this.xTile);
        par1NBTTagCompound.setShort("yTile", (short)this.yTile);
        par1NBTTagCompound.setShort("zTile", (short)this.zTile);
        par1NBTTagCompound.setByte("inTile", (byte)this.inTile);
        par1NBTTagCompound.setByte("shake", (byte)this.throwableShake);
        par1NBTTagCompound.setByte("inGround", (byte)(this.inGround ? 1 : 0));
        if ((this.throwerName == null || this.throwerName.length() == 0) && this.thrower != null && this.thrower instanceof EntityPlayer)
        {
            this.throwerName = this.thrower.getEntityName();
        }
        par1NBTTagCompound.setString("ownerName", this.throwerName == null ? "" : this.throwerName);
    }
    /**
     * (abstract) Protected helper method to read subclass entity data from NBT.
     */
    public void readEntityFromNBT(NBTTagCompound par1NBTTagCompound)
    {
        this.xTile = par1NBTTagCompound.getShort("xTile");
        this.yTile = par1NBTTagCompound.getShort("yTile");
        this.zTile = par1NBTTagCompound.getShort("zTile");
        this.inTile = par1NBTTagCompound.getByte("inTile") & 255;
        this.throwableShake = par1NBTTagCompound.getByte("shake") & 255;
        this.inGround = par1NBTTagCompound.getByte("inGround") == 1;
        this.throwerName = par1NBTTagCompound.getString("ownerName");
        if (this.throwerName != null && this.throwerName.length() == 0)
        {
            this.throwerName = null;
        }
    }
    @SideOnly(Side.CLIENT)
    public float getShadowSize()
    {
        return 0.0F;
    }
    public EntityLiving getThrower()
    {
        if (this.thrower == null && this.throwerName != null && this.throwerName.length() > 0)
        {
            this.thrower = this.worldObj.getPlayerEntityByName(this.throwerName);
        }
        return this.thrower;
    }
}

Quote from toyboat4

Everything is working fine for me, I've solved problems on my own, so maybe I could help you too. Just reply to this with your problem and I will see what I can do.

Quote from TreeIguana

Can anyone help me? When I try to place a plane or any vehicle my minecraft crashes and says this: Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem; Ticking memory connection
A full error report has been saved to C:\Users\Tree\AppData\Roaming\.minecraft\crash-reports\crash-2013-01-05_20.19.34-server.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash

--- BEGIN ERROR REPORT 31489e81 --------
Full report at:
C:\Users\Username\AppData\Roaming\.minecraft\crash-reports\crash-2013-01-05_20.19.34-server.txt
Please show that file to Mojang, NOT just this screen!
Generated 1/5/13 8:19 PM
-- System Details --
Details:
Minecraft Version: 1.4.6
Operating System: Windows 8 (x86) version 6.2
Java Version: 1.7.0_10, Oracle Corporation
Java VM Version: Java HotSpot™ Client VM (mixed mode), Oracle Corporation
Memory: 326806968 bytes (311 MB) / 519110656 bytes (495 MB) up to 1037959168 bytes (989 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m
AABB Pool Size: 6491 (363496 bytes; 0 MB) allocated, 6378 (357168 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 3, tallocated: 63
FML: MCP v7.25 FML v4.6.12.511 Minecraft Forge 6.5.0.467 4 mods loaded, 4 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
FlansMod [Flan's Mod] (Flans Mod 2.1.1 for Minecraft 1.4.6 Universal.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Profiler Position: N/A (disabled)
Vec3 Pool Size: 1537 (86072 bytes; 0 MB) allocated, 1456 (81536 bytes; 0 MB) used
Player Count: 1 / 8; [iq['TreeIguana'/193, l='LOL', x=-617.56, y=61.00, z=683.41]]
Type: Integrated Server (map_client.txt)
Is Modded: Definitely; Client brand changed to 'forge,fml'
java.lang.NullPointerException
at co.uk.flansmods.common.DriveableData.b(DriveableData.java:66)
at co.uk.flansmods.common.EntityVehicle.writeSpawnData(EntityVehicle.java:869)
at cpw.mods.fml.common.network.EntitySpawnPacket.generatePacket(EntitySpawnPacket.java:123)
at cpw.mods.fml.common.network.FMLPacket.makePacket(FMLPacket.java:119)
at cpw.mods.fml.common.network.FMLNetworkHandler.getEntitySpawningPacket(FMLNetworkHandler.java:354)
at is.b(EntityTrackerEntry.java:460)
at is.b(EntityTrackerEntry.java:366)
at is.b(EntityTrackerEntry.java:449)
at ii.a(EntityTracker.java:203)
at cpw.mods.fml.common.registry.EntityRegistry.tryTrackingEntity(EntityRegistry.java:351)
at ii.a(EntityTracker.java:59)
at ij.a(SourceFile:24)
at yc.a(World.java:1551)
at in.a(WorldServer.java:863)
at yc.d(World.java:1539)
at co.uk.flansmods.common.ItemVehicle.a(ItemVehicle.java:63)
at ur.a(SourceFile:98)
at ir.a(ItemInWorldManager.java:348)
at iv.a(NetServerHandler.java:555)
at fk.a(SourceFile:58)
at cf.b(MemoryConnection.java:80)
at iv.d(NetServerHandler.java:136)
at iw.b(NetworkListenThread.java:57)
at bec.b(IntegratedServerListenThread.java:108)
at net.minecraft.server.MinecraftServer.r(MinecraftServer.java:702)
at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:598)
at bdz.q(IntegratedServer.java:123)
at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:497)
at fy.run(SourceFile:849)
--- END ERROR REPORT a84caa8b ----------
If anyone could help me with this problem I would greatly appreciate it