0010839: Zap bounce around corners behaves differently online and offline

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Category

Severity

Reproducibility

Date Submitted

Last Update

0010839

[DCSS] Bug Report

minor

always

2016-12-04 10:55

2020-02-23 09:46

Reporter

PlatinumSpider

View Status

public

Assigned To

Priority

normal

Resolution

open

Status

confirmed

Product Branch

0.19 ancient branch

Summary

0010839: Zap bounce around corners behaves differently online and offline

Description

I've tested this on the online stable and trunk versions and the offline stable and trunk, the zaps bounce differently online than offline. I posted about it in the GDD forum.

https://crawl.develz.org/tavern/viewtopic.php?f=8&t=22375&sid=80d955da9fda05e38846c90280e18cf4 [^]

Situation    Offline   Online
#g#          0000002#       #1#
#g###        *2###     *2###
#.@..        #.@..     #.@..
#.###        #.###     #.###

The above is an attempt to draw it out. I'm standing as @ at a corner and shoot the wall marked with the * and offline get two double bounce squares on the goblins. But online only the adjacent square is a double bounce and the second is a single.

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Notes
(0031521) advil (administrator) 2017-03-06 02:44	Can confirm that this changed with 56c49a25a2bdf741d1968236090102df6e1c9ff6. Not immediately obvious to me why.

(0033690) Yermak (reporter) 2020-02-23 09:46	Although right now behaviour in online and offline tiles seems consistent and corresponds to case 2 ("Online") described here, I believe it is erroneous. If you accurately count the number of bounces you'll see that the second tile around the corner should also be hit twice. (Range is 7, each wall decreases range by one: tile-wall-tile-wall-tile-wall-tile, angle at which you fire your spell hits two tiles with y=1 and two tiles with y=2, therefore twice the first goblin and twice the second.)

Issue History
Date Modified	Username	Field	Change
2016-12-04 10:55	PlatinumSpider	New Issue
2017-03-06 02:07	advil	Description Updated
2017-03-06 02:44	advil	Note Added: 0031521
2017-03-06 02:44	advil	Status	new => confirmed
2020-02-23 09:46	Yermak	Note Added: 0033690

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