Minecraft Forums

So I was making a mod and part of it required shooting arrows at the players crosshairs, so I began with a getYaw and getPitch. Then I realized that geometry was not my best subject, and I have no clue how to cause an arrow at top velocity shoot where the players crosshairs are. So basically I can't convert the x y z coords of the player and their yaw and pitch into spawning the arrow. Any help? Also, any other important geometric functions like this?

D: I'm using this it doesn't do anything there's no error message:

function useItem(x,y,z,itemId,blockId,side,itemDamage,blockDamage) {

if (itemId==289) {

var yaw=Entity.getYaw(getPlayerEnt());

var myX;

var myZ;

yaw=yaw-90;

while(yaw>360){

yaw=yaw-360;

}

while(yaw<0){

yaw=yaw+360;

}

if(yaw>0 && yaw<22){

myX=-0.5;

myZ=0;

}

if(yaw>22 && yaw<45){

myX=-0.35;

myZ=-0.2;

}

if(yaw>45 && yaw<67){

myX=-0.2;

myZ=-0.35;

}

if(yaw>67 && yaw<90){

myX=0;

myZ=-0.5;

}

if(yaw>90 && yaw<112){

myX=0;

myZ=-0.5;

}

if(yaw>112 && yaw<135){

myX=0.2;

myZ=-0.35;

}

if(yaw>135 && yaw<157){

myX=0.35;

myZ=-0.2;

}

if(yaw>157 && yaw<180){

myX=0.5;

myZ=0;

}

if(yaw>180 && yaw<202){

myX=0.5;

myZ=0;

}

if(yaw>202 && yaw<225){

myX=0.35;

myZ=0.2;

}

if(yaw>225 && yaw<247){

myX=0.2;

myZ=0.35;

}

if(yaw>247 && yaw<270){

myX=0;

myZ=0.5;

}

if(yaw>270 && yaw<292){

myX=0;

myZ=0.5;

}

if(yaw>292 && yaw<315){

myX=-0.2;

myZ=0.35;

}

if(yaw>315 && yaw<337){

myX=-0.35;

myZ=0.2;

}

if(yaw>337 && yaw<360){

myX=-0.5;

myZ=0;

}

try{

arrow=Level.spawnMob(Player.getX()+myX*5, Player.getY(), Player.getZ()+myZ*5, 80);

Entity.setVelX(arrow, myX*1.7);

Entity.setVelY(arrow, 0.15);

Entity.setVelZ(arrow, myZ*1.7);

arrow=0;

}catch(err){

print("Error: " + err);

}

}

}

Taken from the torchgun mod, btw

Now I did. It still doesn't work. I really don't understand it.

I feel like such a noob... I finally found out I was using id 289 instead of 180.