49.19.1 AoE damage doing TOO much to infantry

[BoloNike]

Environment

MegaMek v0.49.19.1
Build Date: 2024-05-10T20:11:07.447429751
Today: 2024-08-14
Origin Project: MegaMek
Java Vendor: Eclipse Adoptium
Java Version: 11.0.24
Platform: Windows 10 10.0 (amd64)
System Locale: en_US
Total memory available to MegaMek: 16 GB

Description

Looks like Artillery (AoE) is doing too much damage to CI.
When a standard HE Arrow IV round (20/10) hit one tile off from an exposed CI platoon it did 4 groupings totaling 60 damage.
Calculation should be only 40 max for one tile off. 10 ->(divide by .5 for AoE) -> 20 -> (double for in open terrain) -> 40.

Looking at the (20,20,10,10) grouping it seems like it is calculating the damage to CI before terrain effects (10->20) then dividing to damage groupings of 5 (4x5) then applying BOTH the AoE effect and the Open Terrain effect (5->10->20). Conjecture that last two are only 10 (and not showing open effect as applying) as ghosts cannot be in open terrain.

Files

MegaMek log
megamek.log

###Pictures
Arrow IV Standard HE firing solutions.

Weapons phase results

[gsparks3]

Save from start of firing phase for testing and reproduction (0.49.19.1):
ae_vs_ci_testing.sav.gz

Thumper Cannon does 5 AE damage, which is doubled to 10, then each cluster of 5 damage from that 10 is doubled twice to 20, doing a total of 40 damage. One too many doublings.