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Speed comes into to play with scale differences. Otherwise, speed is the same for everyone for fairness's sake. The same is true for strength. Rather than argue about just how much stronger one character is compared to another, they have equal strength and it becomes a matter of how they use it.

And there is a 'luck' system, as you put it, that incorporates dodging, critical hits, unblockables, saves, et al. in the form of Chance to Hit and Damage Dealt vs. Damage Absorbed.


I want this system to be as simple as possible because it has to rely on human calculations, which have to be simple, clear, and have repeatable conclusions.

Of course, you are always welcome to develop and propose your own alternative combat system. At least until we begin the actually roleplay.

Alright, here's the system from Fire Emblem.

Besides health, you have 8 stats, being as follows:
Magic
Skill
Speed
Luck
Defense
Resistance
Constitution
Movement

Each stat has a base level, a cap, and a growth rate (in %). Including health, the total of all the base stats equals 50, while the total growth rate equals 300. When you level up, a 100-sided die is rolled 8 times (Movement doesn't grow, and if the constitution growth is 0 then the die is only rolled 7 times.) if the number rolled is within the growth range, then that stat is raised. While some characters may turn out ungodly aweful and others may turn out godly good, it's a very, very low percentage.

Weapons also have stats, which are as follows:
Usage
Level
Range
Weight
Might
Hit
Critical

Battle Calculations:

Accuracy = Weapon Hit + (Skill x 2) + Luck / 2 + Weapon triangle bonus

Attack Speed = Speed - (Weapon Weight - Constitution) [Minimum is 0]

Avoid = (Attack Speed x 2) + Luck

Battle Accuracy = Accuracy - enemy's Avoid

Physical Attack = Strength + [(Weapon might + Weapon triangle bonus) x Effective coefficient]

Magical Attack = Magic + [(Weapon might + Weapon triangle bonus) x Effective coefficient]

Physical Defense = Defense

Magical Defense = Resistance

Damage = (Attack - enemy's Defense) x Critical coefficiant

Critical rate = Weapon Critical + (Skill / 2) + Critical Bonus (For mid and high-tier classes ie. Trueblades, SOLDIER Class 1, ect.)

Critical Evade = Luck

Battle critical rate = Critical rate - enemy's Critical evade

Assassination rate = (Battle critical rate / 2)

Weapon triangle bonus = +15 accuracy and +1 attack if good against enemy's weapon, -15 accuracy and -1 attack if bad against enemy's weapon.
Weapon coefficient = 2 if effective against enemy, 1 if not.
Critical coefficient = 3 if critical is successful, 1 if not.
Critical bonus = 15 if user is second tier, 30 if user is third tier.
*Assassination rate applies only to Assassins.
*Double-attack if attack speed is at least 4 more than opponent's.

Will do.

(ooc: Separating Alpha and Beta's posts because they are no longer attacking in unison.)
Beta attempts a barrel roll to dodge the incoming torpedoes. His only choice it to try and outrun the X-Wing.

Beta 144 hp

Regions:
Fuselage 48 hp, Titanium Hull Plating (2:2:2) - Fore 2x Proton Torpedo Launcher (2:1:3) [Medium, Long] - 6x Torpedoes per Launcher;

Starboard S-Foils 48 hp, Titanium Hull Plating (2:2:2) - Fore Laser Cannon (4:2:0) [Medium, Medium], Ion Cannon (1:1:4) [Medium, Medium];

Port S-Foils 48 hp, Titanium Hull Plating (2:2:2) - Fore Laser Cannon (4:2:0) [Medium, Medium], Ion Cannon (1:1:4) [Medium, Medium];

Critical Locations:
Cockpit Ball [Fuselage] 100 hp, Titanium Hull Plating (2:2:2) - 1x Pilot

Hyperdrive and NavCom [Fuselage] 100 hp, Titanium Hull Plating (2:2:2) - Necessary for Hyperspace Jump

Stabilizers [Fuselage] 100 hp, Titanium Hull Plating (2:2:2)

Analysis:
Normally, we won't need this, but I'm going to explain what's going on because you are all learning the system and I'm having to trace it all out to make sure it works the way I want. Be aware, though, that this will be my first time running actually numbers so it is likely that there will be some changes to the combat system. I will however, point out all of those changes and explain my reasons for making them in a separate post.

As with the X-Wing's last attack, chance to hit is 100 so we don't need to calculate that. We just need to calculate damage dealt and damage absorbed.

First, damage dealt: 98 and 97 average to 97.5 so damage will be a multiple of that.

Damage absorbed is a multiple of 38.5.

So the proton torpedoes deal [195:97.5:292.5] and the TIE's armor absorbs [77:77:77]. That means 118 + 20.5 + 215.5, or 354, damage goes to hitpoints and Beta is destroyed.

Also, now that Alpha has started attacking the X-Wing. The X-Wing needs to post again with dice rolls to determine that.