[Unanswered] Bow and Arrow Tut??

by **MrCreeper07** Sun Nov 06, 2011 4:58 pm

I am looking for a bow and arrow tutorial. I found one but got these errors

Code:: == ERRORS FOUND == src/minecraft/net/minecraft/src/EntityJiffyArrow.java:158: cannot find symbol symbol : method func_28105_a(net.minecraft.src.Vec3D,net.minecraft.src.Vec3D,boolean,boolean) location: class net.minecraft.src.World MovingObjectPosition movingobjectposition = worldObj.func_28105_a(vec3d, vec3d1, false, true); ^ src/minecraft/net/minecraft/src/EntityJiffyArrow.java:198: attackEntityFrom(net.minecraft.src.DamageSource,int) in net.minecraft.src.Entity cannot be applied to (net.minecraft.src.EntityLiving,int) if(movingobjectposition.entityHit.attackEntityFrom(owner, 4)) ^ 2 errors ==================

in the spoiler bellow is the EntityJiffyArrow.java that has this error

Spoiler:

Code:: package net.minecraft.src; import java.util.List; import java.util.Random; public class EntityJiffyArrow extends Entity { public EntityJiffyArrow(World world) { super(world); xTile = -1; yTile = -1; zTile = -1; inTile = 0; field_28019_h = 0; inGround = false; doesArrowBelongToPlayer = false; arrowShake = 0; ticksInAir = 0; setSize(0.5F, 0.5F); } public EntityJiffyArrow(World world, double d, double d1, double d2) { super(world); xTile = -1; yTile = -1; zTile = -1; inTile = 0; field_28019_h = 0; inGround = false; doesArrowBelongToPlayer = false; arrowShake = 0; ticksInAir = 0; setSize(0.5F, 0.5F); setPosition(d, d1, d2); yOffset = 0.0F; } public EntityJiffyArrow(World world, EntityLiving entityliving) { super(world); xTile = -1; yTile = -1; zTile = -1; inTile = 0; field_28019_h = 0; inGround = false; doesArrowBelongToPlayer = false; arrowShake = 0; ticksInAir = 0; owner = entityliving; doesArrowBelongToPlayer = entityliving instanceof EntityPlayer; setSize(0.5F, 0.5F); setLocationAndAngles(entityliving.posX, entityliving.posY + (double)entityliving.getEyeHeight(), entityliving.posZ, entityliving.rotationYaw, entityliving.rotationPitch); posX -= MathHelper.cos((rotationYaw / 180F) * 3.141593F) * 0.16F; posY -= 0.10000000149011612D; posZ -= MathHelper.sin((rotationYaw / 180F) * 3.141593F) * 0.16F; setPosition(posX, posY, posZ); yOffset = 0.0F; motionX = -MathHelper.sin((rotationYaw / 180F) * 3.141593F) * MathHelper.cos((rotationPitch / 180F) * 3.141593F); motionZ = MathHelper.cos((rotationYaw / 180F) * 3.141593F) * MathHelper.cos((rotationPitch / 180F) * 3.141593F); motionY = -MathHelper.sin((rotationPitch / 180F) * 3.141593F); setArrowHeading(motionX, motionY, motionZ, 1.5F, 1.0F); } protected void entityInit() { } public void setArrowHeading(double d, double d1, double d2, float f, float f1) { float f2 = MathHelper.sqrt_double(d * d + d1 * d1 + d2 * d2); d /= f2; d1 /= f2; d2 /= f2; d += rand.nextGaussian() * 0.0074999998323619366D * (double)f1; d1 += rand.nextGaussian() * 0.0074999998323619366D * (double)f1; d2 += rand.nextGaussian() * 0.0074999998323619366D * (double)f1; d *= f; d1 *= f; d2 *= f; motionX = d; motionY = d1; motionZ = d2; float f3 = MathHelper.sqrt_double(d * d + d2 * d2); prevRotationYaw = rotationYaw = (float)((Math.atan2(d, d2) * 180D) / 3.1415927410125732D); prevRotationPitch = rotationPitch = (float)((Math.atan2(d1, f3) * 180D) / 3.1415927410125732D); ticksInGround = 0; } public void setVelocity(double d, double d1, double d2) { motionX = d; motionY = d1; motionZ = d2; if(prevRotationPitch == 0.0F && prevRotationYaw == 0.0F) { float f = MathHelper.sqrt_double(d * d + d2 * d2); prevRotationYaw = rotationYaw = (float)((Math.atan2(d, d2) * 180D) / 3.1415927410125732D); prevRotationPitch = rotationPitch = (float)((Math.atan2(d1, f) * 180D) / 3.1415927410125732D); prevRotationPitch = rotationPitch; prevRotationYaw = rotationYaw; setLocationAndAngles(posX, posY, posZ, rotationYaw, rotationPitch); ticksInGround = 0; } } public void onUpdate() { super.onUpdate(); if(prevRotationPitch == 0.0F && prevRotationYaw == 0.0F) { float f = MathHelper.sqrt_double(motionX * motionX + motionZ * motionZ); prevRotationYaw = rotationYaw = (float)((Math.atan2(motionX, motionZ) * 180D) / 3.1415927410125732D); prevRotationPitch = rotationPitch = (float)((Math.atan2(motionY, f) * 180D) / 3.1415927410125732D); } int i = worldObj.getBlockId(xTile, yTile, zTile); if(i > 0) { Block.blocksList[i].setBlockBoundsBasedOnState(worldObj, xTile, yTile, zTile); AxisAlignedBB axisalignedbb = Block.blocksList[i].getCollisionBoundingBoxFromPool(worldObj, xTile, yTile, zTile); if(axisalignedbb != null && axisalignedbb.isVecInside(Vec3D.createVector(posX, posY, posZ))) { inGround = true; } } if(arrowShake > 0) { arrowShake--; } if(inGround) { int j = worldObj.getBlockId(xTile, yTile, zTile); int k = worldObj.getBlockMetadata(xTile, yTile, zTile); if(j != inTile || k != field_28019_h) { inGround = false; motionX *= rand.nextFloat() * 0.2F; motionY *= rand.nextFloat() * 0.2F; motionZ *= rand.nextFloat() * 0.2F; ticksInGround = 0; ticksInAir = 0; return; } ticksInGround++; if(ticksInGround == 1200) { setEntityDead(); } return; } ticksInAir++; Vec3D vec3d = Vec3D.createVector(posX, posY, posZ); Vec3D vec3d1 = Vec3D.createVector(posX + motionX, posY + motionY, posZ + motionZ); MovingObjectPosition movingobjectposition = worldObj.func_28105_a(vec3d, vec3d1, false, true); vec3d = Vec3D.createVector(posX, posY, posZ); vec3d1 = Vec3D.createVector(posX + motionX, posY + motionY, posZ + motionZ); if(movingobjectposition != null) { vec3d1 = Vec3D.createVector(movingobjectposition.hitVec.xCoord, movingobjectposition.hitVec.yCoord, movingobjectposition.hitVec.zCoord); } Entity entity = null; List list = worldObj.getEntitiesWithinAABBExcludingEntity(this, boundingBox.addCoord(motionX, motionY, motionZ).expand(1.0D, 1.0D, 1.0D)); double d = 0.0D; for(int l = 0; l < list.size(); l++) { Entity entity1 = (Entity)list.get(l); if(!entity1.canBeCollidedWith() || entity1 == owner && ticksInAir < 5) { continue; } float f4 = 0.3F; AxisAlignedBB axisalignedbb1 = entity1.boundingBox.expand(f4, f4, f4); MovingObjectPosition movingobjectposition1 = axisalignedbb1.func_1169_a(vec3d, vec3d1); if(movingobjectposition1 == null) { continue; } double d1 = vec3d.distanceTo(movingobjectposition1.hitVec); if(d1 < d || d == 0.0D) { entity = entity1; d = d1; } } if(entity != null) { movingobjectposition = new MovingObjectPosition(entity); } if(movingobjectposition != null) { if(movingobjectposition.entityHit != null) { if(movingobjectposition.entityHit.attackEntityFrom(owner, 4)) { worldObj.playSoundAtEntity(this, "random.drr", 1.0F, 1.2F / (rand.nextFloat() * 0.2F + 0.9F)); setEntityDead(); } else { motionX *= -0.10000000149011612D; motionY *= -0.10000000149011612D; motionZ *= -0.10000000149011612D; rotationYaw += 180F; prevRotationYaw += 180F; ticksInAir = 0; } } else { xTile = movingobjectposition.blockX; yTile = movingobjectposition.blockY; zTile = movingobjectposition.blockZ; inTile = worldObj.getBlockId(xTile, yTile, zTile); field_28019_h = worldObj.getBlockMetadata(xTile, yTile, zTile); motionX = (float)(movingobjectposition.hitVec.xCoord - posX); motionY = (float)(movingobjectposition.hitVec.yCoord - posY); motionZ = (float)(movingobjectposition.hitVec.zCoord - posZ); float f1 = MathHelper.sqrt_double(motionX * motionX + motionY * motionY + motionZ * motionZ); posX -= (motionX / (double)f1) * 0.05000000074505806D; posY -= (motionY / (double)f1) * 0.05000000074505806D; posZ -= (motionZ / (double)f1) * 0.05000000074505806D; worldObj.playSoundAtEntity(this, "random.drr", 1.0F, 1.2F / (rand.nextFloat() * 0.2F + 0.9F)); inGround = true; arrowShake = 7; } } posX += motionX; posY += motionY; posZ += motionZ; float f2 = MathHelper.sqrt_double(motionX * motionX + motionZ * motionZ); rotationYaw = (float)((Math.atan2(motionX, motionZ) * 180D) / 3.1415927410125732D); for(rotationPitch = (float)((Math.atan2(motionY, f2) * 180D) / 3.1415927410125732D); rotationPitch - prevRotationPitch < -180F; prevRotationPitch -= 360F) { } for(; rotationPitch - prevRotationPitch >= 180F; prevRotationPitch += 360F) { } for(; rotationYaw - prevRotationYaw < -180F; prevRotationYaw -= 360F) { } for(; rotationYaw - prevRotationYaw >= 180F; prevRotationYaw += 360F) { } rotationPitch = prevRotationPitch + (rotationPitch - prevRotationPitch) * 0.2F; rotationYaw = prevRotationYaw + (rotationYaw - prevRotationYaw) * 0.2F; float f3 = 0.99F; float f5 = 0.03F; if(isInWater()) { for(int i1 = 0; i1 < 4; i1++) { float f6 = 0.25F; worldObj.spawnParticle("bubble", posX - motionX * (double)f6, posY - motionY * (double)f6, posZ - motionZ * (double)f6, motionX, motionY, motionZ); } f3 = 0.8F; } motionX *= f3; motionY *= f3; motionZ *= f3; motionY -= f5; setPosition(posX, posY, posZ); } public void writeEntityToNBT(NBTTagCompound nbttagcompound) { nbttagcompound.setShort("xTile", (short)xTile); nbttagcompound.setShort("yTile", (short)yTile); nbttagcompound.setShort("zTile", (short)zTile); nbttagcompound.setByte("inTile", (byte)inTile); nbttagcompound.setByte("inData", (byte)field_28019_h); nbttagcompound.setByte("shake", (byte)arrowShake); nbttagcompound.setByte("inGround", (byte)(inGround ? 1 : 0)); nbttagcompound.setBoolean("player", doesArrowBelongToPlayer); } public void readEntityFromNBT(NBTTagCompound nbttagcompound) { xTile = nbttagcompound.getShort("xTile"); yTile = nbttagcompound.getShort("yTile"); zTile = nbttagcompound.getShort("zTile"); inTile = nbttagcompound.getByte("inTile") & 0xff; field_28019_h = nbttagcompound.getByte("inData") & 0xff; arrowShake = nbttagcompound.getByte("shake") & 0xff; inGround = nbttagcompound.getByte("inGround") == 1; doesArrowBelongToPlayer = nbttagcompound.getBoolean("player"); } public void onCollideWithPlayer(EntityPlayer entityplayer) { if(worldObj.multiplayerWorld) { return; } if(inGround && doesArrowBelongToPlayer && arrowShake <= 0 && entityplayer.inventory.addItemStackToInventory(new ItemStack(mod_JiffyBow.JiffyArrow, 1))) { worldObj.playSoundAtEntity(this, "random.pop", 0.2F, ((rand.nextFloat() - rand.nextFloat()) * 0.7F + 1.0F) * 2.0F); entityplayer.onItemPickup(this, 1); setEntityDead(); } } public float getShadowSize() { return 0.0F; } private int xTile; private int yTile; private int zTile; private int inTile; private int field_28019_h; private boolean inGround; public boolean doesArrowBelongToPlayer; public int arrowShake; public EntityLiving owner; private int ticksInGround; private int ticksInAir; }

this is to help me fix the error and request a full tutorial on it and a explanation because the other tutorial didn't have one so I got errors.