You will need to download a Hex editor. I use HxD. Open up the .iso file via HxD. You'll see numbers and ABCDEF letters representing binary values. On the left side you'll see an offset, which is kind of like jumping to a certain line on a text document. This blog will tell you what offset to look for. (press Ctrl+G to jump to an offset using HxD)
Base Offsets in .iso[]
Add 0x240 offset per gun (ie.) 3266F0+240 = 0x3266F0, and 0x326930+0x240 would be 0x326B70 as seen below.
So you went to one of the offsets, let's say you went to 0x3266F0 (silenced pistol). You should see "000003D8" followed by "000003D9 00000041 00000008" at that offset. Now within the 0x240 bytes of data per gun, I've documented SOME of them. Feel free to discover the rest.
Example: So using the
Example 1
silenced pistol offset of 0x3266F0 we want to edit the Clip Size to 15. We see an offset of 0014, so we add 0x3266F0+0x14 in a hex calculator. which equals 0x326704. So we edit the value at 0x326704 which is 0x00000008 to the value of 0x0000000F.
Example: I want to edit projectile fired of the minigun to reaper splitter lightning. Go to offset 0x
Example 2
327230 and add 0x68, which equals 0x327298. The value should be 0x00000001 which is bullets and change it to 0x00000026.
Example: Some values are floating points, which represent decimal numbers such as 1.5. Let's edit Silenced Pistol weapon spread at 0x326770 which has the value 0x3C23D70A which is equal to 0.01. Using a floating point converter https://www.h-schmidt.net/FloatConverter/IEEE754.html you can input a number and get the floating point representation. Let's change the number to 0.50, which is 3f000000, which will make the gun REALLY INACCURATE.
0000 - Model #1 0004 - Also Model? (seems to be +1 greater than Model #1; if model #1 is 3d5, then this is 3d6) 0008 - Bit flags (binary) 0000 0000 0000 (use windows programmer calculator or any binary-hex converter) bit # (right most)
1 Holds as a handgun (when viewing another character with this gun)
2 2 and 3 seem to always be used in tandem with 2-handed weapons (probably for each hand holding gun)
3
4
5
6 No sway while aiming (like snipers)
7 Stealthy? (silenced weapons and snipers, probably alerts less)
8 Reload after every shot (Throwing weapons, doesn't matter if gun has a clip size)
9
10 lasergun/minigun logic (if 0x6c is 1 or 0, this makes the gun fire super fast with trigger unheld) idk how to implement it yet
11 S47 and plasma auto have this (changes how AI uses alternate fire; with this on they dont alt-fire randomly, only at the start of engaging)
12
000C - 0010 - Ammo type (any gun with the same number shares ammo) ie. sniper/vintage, shotgun/tactical 12-guage. Also determines max ammo. 0014 - Clip Size (1 = no clip) 0018 - 001C - 0020 - Ammo amount on Pickup (doesnt change story mode specific pick ups that yield less than usual amounts) 0024 - Secondary Ammo amount on pickup (# of plasma grenades for example) 0028 - Delay after shooting before being able to reload 002C - Sound ID on pickup (scifi handgun sound is 1d2) 0030 - Autoaim Sensitivity (gun tilts towards targets) 0034 - Autoaim (doesn't move gun but still improves aim, laser gun and shotguns have this for instance) 0038 - Gun X offset (setting to zero makes gun point straight) 003C - Y offset 0040 - Z offset 0044 - 0048 - 004C - 0050 - Crosshair Graphic ID 0054 - Initial Zoom (how far zoomed in your are when you first aim) 0058 - Minimum Zoom (60.0 is normal) 005C - Maximum Zoom (lower number means stronger zoom) 0060 - Aiming Type (0=accurate while aim, 1=ditto, 2=doesn't make accurate (think shotguns)) 0064 - Projectile ID (crashes in storymode if graphic isn't loaded, with few exceptions) 0068 - Projectiles Fired per 'shot' 006C - Minigun uses this 0070 - Rate of Fire (frames, semi-automatic) 0074 - Rate of Fire (frames, held fire) 0078 - Ricochet chance (can go over 1.0) 007C - Projectile Speed 0080 - Shot spread 0084 - Ammo used per shot (first shot before letting go of the trigger) 0088 - Ammo used per shot (subsequent shots) 008C - 0090 - 0094 - 0098 - Sound ID (first shot) 009C - Sound ID (held) 00A0 - 00A4 - ??? Seems to always be 232 00A8 - ??? ditto 00AC - 00B0 - 00B4 - 00B8 - Recoil Parameters 00BC - 00C0 - 00C4 - 00C8 - Damage ID 00CC - Recoil Parameters 00D0 - 00D4 - 00D8 - 00DC - 00E0 - 00E4 - 00E8 - 00EC - 00F0 - 00F4 - ??? 00F8 - ??? 00FC - More parameters 0100 - ?? 0104 - ?? 0108 - ?? 010C - ?? 0110 - Alt-Fire Projectile ID 0114 - Projectiles fired 0118 - ?? 011C - Rate of Fire (frames, semi-automatic) 0120 - Rate of Fire (frames, held fire) 0124 - Ricochet 0128 - Projectile Speed 012C - Spread 0130 - Ammo used per shot (first shot before letting go of the trigger) 0134 - Ammo used per shot (subsequent shots) 0138 - 013C - 0140 - 0144 - Sound ID (first shot) 0148 - Sound ID (held) 014C - 0150 - ??? Seems to always be 232 0154 - ??? ditto 0158 - 015C - 0160 - ID for emptying bullet shell graphic 0164 - Recoil Parameters 0168 - 016C - 0170 - 0174 - Damage ID (Alt fire) 0178 - Recoil Parameters 017C - 0180 - 0184 - 0188 - 018C - 0190 - 0194 - 0198 - 019C - End of params 01A0 - ??? 01A4 - ??? 01A8 - More parameters 01AC - 01B0 - 01B4 - End of params 01B8 - ? 01BC - ? 01C0 - ? 01C4 - 01C8 - 01CC - 01D0 - 01D4 - 01D8 - Animation for emptying shells 3 = shell goes flying, 2 = from under, 1 = drops from front, 0 drops slowly 01DC - Affects where shells come from? 01E0 - 01E4 - 01E8 - 01EC - 01F0 - 01F4 - 01F8 - 01FC - 0200 - 0204 - 0208 - 020C - 0210 - 0214 - 0218 - 021C - 0220 - 0224 - 0228 - 022C - 0230 - 0234 - 0238 - 023C - 0240 -
Projectile IDs[]
If you want to change projectiles, this is the ID's and what they represent. Note that explosives override the damage ID.
0 = Blank 1 = Standard Bullets 2 = Sniper (bullet trails more) 3 = Invisible (shotgun, triggers special flinch animation) 4 = Autogun Launcher (assault scrapyard) 5 = Turret Rocket (no homing on other guns) 6 = Rocket Launcher (Gun) 7 = Homing Launcher (no homing on other guns) 8 = Chopper Rocket 9 = S47 Grenade A = Nade 2 B = Grenade Launcher (impact) C = Grenade Launcher Alt-Fire D = Plasma Grenade E = Remote Mine F = Timed Mine 10 = 11 = TNT 12 = Brick 13 = Flamethrower Weapon 14 = ? 15 = Screen Shake + explosion damage point blank 16 = Laser Gun 17 = Offset Laser? 18 = electrotool 19 = Big Lightning Bolt 1a = green lazer 1b = planet X Green UFO turret 1c = Scifi Handgun 1d = Robot Factory Autogun 1e = Plasma Autorifle 1f = Red Plasma (laser gun uncharged) 20 = Meezer Mox Lazer 21 = Sewer Zombie Spit 22 = Cropolite Beams 23 = Crossbolt 24 = Firebolts 25 = Robot Factory Security Lazer 26 = Reaper Splitter Bolt 27 = Drone Splitter Breath 28 = Bullet with Trail 29 = Pink Planet X Plasma 2a
