How do i Check for block neighbor that is for example 5 blocks away

[Silverkill95]

so, my mod blows items npc's mobs and players into a certain direction

however, if you put a block inbetween it will still move you

 

my question is what method do i need to use in my TileEntity to make it so that i stop moving

aka, how do i check for a block in the distance?

 

 

[Mazetar]

Well if you can answer this, you should already have the answer in front of you:

 

How can you get a block at any given position?

[Silverkill95]

Well if you can answer this, you should already have the answer in front of you:

 

How can you get a block at any given position?

 

ehhhhh.... not really,  i cant seem to figure out a way to check if a block is in front of the block  in a 0 - 20 block  line

 

[Mazetar]

world.getBlockId(xPos, yPos, zPos)

[Silverkill95]

world.getBlockId(xPos, yPos, zPos)

couldnt make it work....

besides can you show me how id make it so that it checks for a block in xPos  1-20 for example?

 

 

[Mazetar]

If you got access to the world object somehow (Hint: your TileEntity has one) then you can call the below method upon it during whatever method you are invoking, like the update method.

 

world.getBlockId(xPos, yPos, zPos)

couldnt make it work....

besides can you show me how id make it so that it checks for a block in xPos  1-20 for example?

 

Sure, but you won't like my answer.

You may not like it nor believe me, but anyone would give you the same answer:

You need to go back and learn some more java basics

 

I recommend looking into these, they are nice and interesting:

http://see.stanford.edu/see/lecturelist.aspx?coll=824a47e1-135f-4508-a5aa-866adcae1111

 

All material available for free, basically the whole course including assignments and handouts/lecture notes

 

[Draco18s]

world.getBlockId(xPos, yPos, zPos)

couldnt make it work....

besides can you show me how id make it so that it checks for a block in xPos  1-20 for example?

 

Loops.

[Reika]

If you want to get really advanced you could use line-of-sight algorithms like this (do not simply copy-paste the code, as it will not work for you):

	for (float i = 0; i <= range; i += 0.25) {
Vec3 vec2 = ReikaVectorHelper.getVec2Pt(x+a, y+b, z+c, x0, y0, z0).normalize();
vec2.xCoord *= i;
vec2.yCoord *= i;
vec2.zCoord *= i;
vec2.xCoord += x0;
vec2.yCoord += y0;
vec2.zCoord += z0;
//ReikaGuiAPI.write(String.format("%f --> %.3f, %.3f, %.3f", i, vec2.xCoord, vec2.yCoord, vec2.zCoord));
int id = world.getBlockId((int)vec2.xCoord, (int)vec2.yCoord, (int)vec2.zCoord);
if ((int)vec2.xCoord == x && (int)vec2.yCoord == y && (int)vec2.zCoord == z) {
//ReikaGuiAPI.writeCoords(world, (int)vec2.xCoord, (int)vec2.yCoord, (int)vec2.zCoord);
return true;
}
else if (id != 0 && (isCollideable(world, (int)vec2.xCoord, (int)vec2.yCoord, (int)vec2.zCoord) && !softBlocks(id))) {
i = (float)(range + 1);
}
}

[Mazetar]

Nice code Reika

[Reika]

Nice code Reika

Thank you.

 

I am writing a (non-base-class-modifying) API that has a lot of such functions; you can certainly use it in your own mods as a dependency if you want. It has no "mod class", so forge does not recognize it as a true mod, but it is accessible if referenced correctly. It also has functionality to use the old spritesheet system (which Optifine sadly breaks on blocks, though items work beautifully) and some file I/O (including PNG and MIDI files).

[Draco18s]

I am writing a (non-base-class-modifying) API that has a lot of such functions; you can certainly use it in your own mods as a dependency if you want. It has no "mod class", so forge does not recognize it as a true mod, but it is accessible if referenced correctly. It also has functionality to use the old spritesheet system (which Optifine sadly breaks on blocks, though items work beautifully) and some file I/O (including PNG and MIDI files).

 

Wow, really cool.