The missile knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or deviation. The guidance subsystem uses deviations to generate corrective commands to drive the missile from a position where it is to a position where it isn't, and arriving at a position where it wasn't, it now is. Consequently, the position where it is, is now the position that it wasn't, and it follows that the position that it was, is now the position that it isn't.

In the event that the position that it is in is not the position that it wasn't, the system has acquired a variation, the variation being the difference between where the missile is, and where it wasn't. If variation is considered to be a significant factor, it too may be corrected by the GEA. However, the missile must also know where it was.

The missile guidance computer scenario works as follows. Because a variation has modified some of the information the missile has obtained, it is not sure just where it is. However, it is sure where it isn't, within reason, and it knows where it was. It now subtracts where it should be from where it wasn't, or vice-versa, and by differentiating this from the algebraic sum of where it shouldn't be, and where it was, it is able to obtain the deviation and its variation, which is called error.

[2.5D FPS RPG WIPFPS WIP] Welcome to The City of Victoria​.
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Still in progress, now at Ver0.0.76

https://kalico357.itch.io/akiva

https://space.bilibili.com/403951624?spm_id_from=333.1007.0.0
https://www.youtube.com/@C357kilo


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Mobile control is not supported 4 now
19/08/2026:

Ver0.0.76
Shooting range added
Weapon sway animation and other stuff were fixed 

17/8/2026:

6/5/2026:
Updated: Drone animation, L&R Peek, movement animation, ADS system updated
Next Target: simple commission, shooting range&ranking

14/4/2026:
now support mobile control(Unstable)

0.0.4
POV Body movement animation
Need 2 finish:
-Footsteps&animation
-Sound Distance
-Basic Enemy attack & defense animation
-Different weapons
-Mobile controls
Planning:
-More realism

-Inventory
-injury and bleeding system(like EFT)
-Armor levels
-Missions
-Multiplayer(?


AKIVA - [FPS]