Latest topics
» A few questions please
Yesterday at 9:15 pm by prapor

» Burgundian mixed pike/Longbow units
Sun Sep 23, 2018 5:39 pm by Nick B

» Any news on Impertus 2?
Sun Sep 23, 2018 9:08 am by Roundie

» Pics for Impetus 2
Sun Sep 23, 2018 5:08 am by morrisbh

» Compte-rendu de partie
Sat Sep 22, 2018 11:07 am by Bobo

» Les petits plus de BI
Tue Sep 18, 2018 1:53 pm by Bobo

» aide jeu 1 interpénétrations et reculs
Sun Sep 02, 2018 9:29 am by Bobo

» An Ancient Campaign using Sabin's Empire as a basis and Basic Impetus (augmented) to fight the battles
Sat Sep 01, 2018 1:44 pm by 1ngram

» Help in making a errata/FAQ
Mon Aug 27, 2018 6:51 am by ether drake

BI2 tournament - 12 May 2018 - CANCELLED

Tue Jan 23, 2018 10:26 am by RogerC

EDIT I am very sorry, but I’ve had to CANCEL this tournament. I’ve …

Comments: 9

Vapnartak. Sunday 4th February 2018 Knavesmere Stand York Racecourse

Thu Jan 04, 2018 7:54 am by Cyrus The Adequate

Hi Gents

York is the usual first event in the UK Impetus calendar. This year …

Comments: 28

Basic Impetus 2 Comp, January 2018?

Mon Oct 30, 2017 10:03 am by Aurelius

I've brought the confirmed details for the Basic Impetus competition to the …

Comments: 32

Vapnartak York Feb 2018- format options?

Wed Oct 18, 2017 8:26 am by Cyrus The Adequate

Hi everyone

I was pondering the options for the York competition and wondered …

Comments: 11

Impetus Competition Derby Worlds 2017

Sun Jul 02, 2017 4:42 pm by Cyrus The Adequate

There will be a 28mm Impetus Competition at Derby World Wargames on 7th …

Comments: 47

Impetus at Derby?

Thu Apr 27, 2017 9:29 am by Cyrus The Adequate

Anyone interested ? 7th & 8th October at a new venue - Bruntingthorpe …

Comments: 11

September 2018

Calendar Calendar

Does a little bit of terrain block shooting

Go down

Does a little bit of terrain block shooting

Post by Sun of York on Mon Jul 25, 2016 11:37 am

Final question from today's game. Needs a picture to explain and the best I can do is this:

Imagine the light cavalry unit 6 cm to the rear and that it wants to fire on the foot directly to its front. There will be a little bit of wood in the way. Will this block the shot?
Sun of York

Posts : 32
Reputation : 0
Join date : 2016-02-07
Location : Perth, Western Australia

View user profile

Back to top Go down

Re: Does a little bit of terrain block shooting

Post by Gaius Cassius on Tue Jul 26, 2016 2:13 am

The LOS rules and the related firing issues is something that I hope is better explained in Impetus 2.  In simple terms, LOS itself is determined by "measuring from the middle of the sighting Unit's front to the middle of one of the sides of the Unit that must be spotted." (3.1.3) The CL, if I understand your explanation is, should be able to meet that condition.

In 6.3.2 you next determine Visibility. The firing unit traces two straight and uninterrupted lines to two corners of the enemy unit. These lines may not cross each other. If there is no obstacle obstructing these lines then the target unit is visible to the firing unit. A friendly unit or even an enemy unit might obstruct direct fire. Does terrain obstruct visibility? (It definitely obstructs LOS.) Here the rules seem vague.

This is how we have interpreted the visibility rule. If a unit is firing through terrain that could impair LOS then we allow the unit to fire up to 5U with respect to visibility. So a unit having one of its tracing lines firing through a bit of woods would have a maximum range of 5U firing distance.

I am curious to see how others have worked this out.
Gaius Cassius
VBU 7 h.c.
VBU 7 h.c.

Posts : 815
Reputation : 24
Join date : 2014-05-20
Location : Guelph, Ontario, Canada

View user profile

Back to top Go down

Re: Does a little bit of terrain block shooting

Post by Zippee on Tue Jul 26, 2016 5:42 pm

As GC says,

3.1.3 and 6.3.2 refer to LOS and something called Visibility and Measurement

LOS and measurement (range) are essentially the same - centre of shooting edge to centre of nearest target edge.

"Visibility" (6.3.2) is to do with arc, defining a fire zone and that zone being blocked by "obstacles" - principally friendly units, hence the reference to indirect fire.

Reading further into 3.1.3 however we discover (amongst other things) that woods reduces the LOS to 5u, it only blocks it beyond this distance.

I think in the situation illustrated the CL would be partly in the woods, but within 5u of the edge thus eligible to shoot - 3.1.3 is categorical on this.

So as you can shoot through woods if within 5u of the edge it seems logical that woods therefore do not block visibility (6.3.2) within that distance, otherwise the rules wouldn't be vague they'd be contradictory.

Essentially I agree with GC - it would be nice if 6.3.2 didn't introduce the term 'obstacles' without definition but I think we can safely define it as something that blocks LOS and all units.

Posts : 599
Reputation : 12
Join date : 2014-05-19
Age : 55
Location : London, UK

View user profile

Back to top Go down

Re: Does a little bit of terrain block shooting

Post by Sponsored content

Sponsored content

Back to top Go down

Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum