Talk:Tutorials/TNT cannons/Archive 1

This is an English Wiki So pls let it AMMUNITION not MUNITION

-Munition - Materials used in war, especially weapons and ammunition.

-Ammunition - A supply or quantity of bullets and shells.

-Those are two completely separate words and should not be interchanged.

?Maximum Delay Increases Distance?

When using TNT as the projectile, I've noticed it consistently travels further when the projectile TNT was activated the moment the booster detonates. Specifically a delay of 10 repeaters set to 4. Kmwillia 12:52, 25 April 2011 (UTC)

This article is obsolete
As of the latest updates it is not possible to make TNT Cannons (at least not like this). So should this article mark as obsolete? --The mr Zalli from Finland 22:16, 7 October 2011 (UTC)


 * I agree, this page is rather outdated. It needs a rewrite. I don't agree, however, that cannons can't be made "like this" anymore (a variety of methods are covered here; most aren't my first choice, but whatevs), as they can indeed. [|Cactus Master] 02:50, 22 November 2011 (UTC)


 * Wrong! each of these cannons work, i tried it myself!

76.27.210.111 21:57, 28 May 2012 (UTC)

--ArkEneru, cannon expert
 * That is very wrong. Many of these things are true, especially the part about mounting blocks and condensation. The example cannon is outdated as of 1.1, but still functions as a short range anti-infantry cannon.

Cannon Range Equation
Ok, so before I give you the numbers, let me first explain how I went about this. I used my Ramses Cannon to test this (link provided so you can see the details of the platform). I tested range at elevations of .5 blocks, 1 block, and 1.5 blocks, as I considered these the practical range of elevations. I used charges from 1-7 tnt for each elevation. I recorded the distance for each shot from each pairing of elevation and charge size. I then took that data and using magic created the following equation. Do remember that it isn't perfect, as it assumes that your target is on the same plane as your cannon. I'm working on altering the equation to account for changes in this.

EQUATION

f(x, w) = 13.0539 + cos(0.35123932 - x)/(32.091557 - 15.533575/cos(18.448326*w - x) - 47.684593*x) + 11.635796*w*cos(0.35123932 - x) - 3.8064015*x*cos(18.448326*w - x) - 12.089317*cos(18.448326*w - x) - 11.635796*x

STATISTICS:

r^2: 0.997904

Maximum error: 3.374008

Minimum error: 3.8147^-6

Reply: You have not indicated the repeater lengths, which is another varible. As someone has said up there, the delay length matters very much. --ArkEneru

This is more for testing purposes than actual use in combat (my server's battles are too fast for such nonsense), as unless you've got an application built to do so (I made a quick C++ for it), plugging in the numbers is a bit tedious. I feel like a better equation could potentially be derived if more data is used, but I'm pressed for time. If someone would want to help me make a better equation, I suggest using the Ramses in a no-lag environment and measuring elevations of 0, 2, 2.5, and 3 with 1-7 tnt charges. I do, however, not see the point in ever actually equipping a cannon with elevations at the extremes; they are useful in only a handful of situations in battle (and can be accomplished by specialized equipment much easier). Please tell me what you think. My goal for the equation is to be included on the actual page after validation and such by all necessary parties. Thanks for reading.

How the acceleration of gravity (7.5M/S/S) is calculated??
The article referred that "TNT falls at a constant acceleration of 7.5 m/s/s, an important number for predicting the range and drop of the shot"

I have some questions about this. First, how the Measure of "meter" in this blocky game is defined? Dose the author means "blocks"?? Second, what is more important, I’ve developed a experiment to measure the acceleration of gravity in the game(which means I do not use any tools that out side the game) and I've got some statistics which indicate that the sand will get into a constant speed of 2blocks/tic when falls about 10 blocks away. But unfortunately, the experiment is not accurate enough to calculate the actual number of this acceleration.

I'm here to ask if anyone has a method to get the accurate number of the acceleration of gravit? If so, please contact me at peterdengjr@gmail.com –Preceding unsigned comment was added by Woshizhu99 (Talk&#124;Contribs) 13:43, 30 April 2012‎. Please sign your posts with


 * Your measurement is close; the actual acceleration and maximum speed are at Entity (pulled from decompiled source code). Looks like the 7.5 m/s/s figure was added by an anonymous user - I'll remove it, as it's quite wrong. -- Orthotope 04:55, 1 May 2012 (UTC)