Smoth48

Thanks Draco, I appreciate your help.

I'm working on creating an Item in my custom mod that spawns a lightning bolt at whichever block the player right clicks on whilst holding a certain item. The item works flawlessly when the player clicks on a block within their range (a block you could normally mine/interact with). However, when the player clicks a block out of that range, Minecraft crashes with a Null Pointer Exception. If anyone could tell me what is causing this error, or might know a possible solution, I would be very much appreciative. Thanks! The code: package smith.tyler.hackCraft.item; import net.minecraft.creativetab.CreativeTabs; import net.minecraft.entity.effect.EntityLightningBolt; import net.minecraft.entity.player.EntityPlayer; import net.minecraft.entity.player.EntityPlayerMP; import net.minecraft.item.Item; import net.minecraft.item.ItemStack; import net.minecraft.util.MathHelper; import net.minecraft.util.MovingObjectPosition; import net.minecraft.util.Vec3; import net.minecraft.world.World; public class ForGiggles extends Item { public ForGiggles(int par1) { super(par1); setUnlocalizedName("forGiggles"); setCreativeTab(CreativeTabs.tabMisc); } public ItemStack onItemRightClick(ItemStack itemStack, World world, EntityPlayer player){ MovingObjectPosition movingobjectposition = getMovingObjectPositionFromPlayer(world, player, false); int x = movingobjectposition.blockX; int y = movingobjectposition.blockY; int z = movingobjectposition.blockZ; world.spawnEntityInWorld(new EntityLightningBolt(world, x, y, z)); System.out.println("Target X: " + x); System.out.println("Target Y: " + y); System.out.println("Target Z: " + z); return itemStack; } public MovingObjectPosition getMovingObjectPositionFromPlayer(World par1World, EntityPlayer par2EntityPlayer, boolean par3) { float f = 1.0F; float f1 = par2EntityPlayer.prevRotationPitch + (par2EntityPlayer.rotationPitch - par2EntityPlayer.prevRotationPitch) * f; float f2 = par2EntityPlayer.prevRotationYaw + (par2EntityPlayer.rotationYaw - par2EntityPlayer.prevRotationYaw) * f; double d0 = par2EntityPlayer.prevPosX + (par2EntityPlayer.posX - par2EntityPlayer.prevPosX) * (double)f; double d1 = par2EntityPlayer.prevPosY + (par2EntityPlayer.posY - par2EntityPlayer.prevPosY) * (double)f + (double)(par1World.isRemote ? par2EntityPlayer.getEyeHeight() - par2EntityPlayer.getDefaultEyeHeight() : par2EntityPlayer.getEyeHeight()); // isRemote check to revert changes to ray trace position due to adding the eye height clientside and player yOffset differences double d2 = par2EntityPlayer.prevPosZ + (par2EntityPlayer.posZ - par2EntityPlayer.prevPosZ) * (double)f; Vec3 vec3 = par1World.getWorldVec3Pool().getVecFromPool(d0, d1, d2); float f3 = MathHelper.cos(-f2 * 0.017453292F - (float)Math.PI); float f4 = MathHelper.sin(-f2 * 0.017453292F - (float)Math.PI); float f5 = -MathHelper.cos(-f1 * 0.017453292F); float f6 = MathHelper.sin(-f1 * 0.017453292F); float f7 = f4 * f5; float f8 = f3 * f5; double d3 = 5.0D; if (par2EntityPlayer instanceof EntityPlayerMP) { d3 = ((EntityPlayerMP)par2EntityPlayer).theItemInWorldManager.getBlockReachDistance(); } Vec3 vec31 = vec3.addVector((double)f7 * d3, (double)f6 * d3, (double)f8 * d3); return par1World.rayTraceBlocks_do_do(vec3, vec31, par3, !par3); } }