top of page
Unreal Engine 5.2
Data structure example
The goal here is to demonstrate how I would create a data structure and implement it in Unreal Engine 5.2
Context :
-
I want to create an FPS game with realistic weapon 3C.
-
How do I implement the weapons specifications into my game ?
Here is a short video of the Rate of Fire & Muzzle Velocity being implemented in the First Person shooter project.
The weapon specs are displayed on the top left corner of the video, I recommand watching it fullscreen.
Setting up the structure
First, I create a simple excel with the values I want to handle ingame
Then I create a Structure in Unreal, and Import my .csv file to create a DataTable
Using the project template First Person Shooter of Unreal Engine, we can consider the following implementation for our DataStruct.
Our structure can be referenced in the BP_Weapon_Component which is then added to the BP_Pickup_Rifle
Implement the structure
Now that our structure is set up, let's implement it to influence the rate of fire and muzzle velocity.
Rate of fire : Controls the speed at which the projectiles are fired
Muzzle velocity : Controls the speed at which the projectile are pushed out of the barrel
Lets initialize some local variable using the Event OnBeginPlay
Such as :
- WeaponSpecs <DataTable> to have a local copy of the table
- CurrentRowName <string> to know which data row we are dealing with at any time
- CurrentRowIndex <int> to know which data row index of the table we currently handle
To handle the Rate of Fire, delay every call of the "Shoot" input action by the RPM.
(actual rate of fire = 1/(RPM/60))
To handle the Muzzle Velocity, add the Muzzle velocity to the projectile.
Actual muzzle velocity is slowed down for visualization purposes.
bottom of page