RTSOpen

RTSOpen is a source-available BSL(1.1) project for developing tools and systems for an RTS game base anyone can bootstrap their games on. The license has custom usage rights that permit *most people to use this in a commercial game project if appropriate credits are given and if the source code is not redistributed outside of compiled form.

*Persons and studios with any access to finances above 100,000 USD per year need to read the additional grants section in the license for further details

Notes

Updated the readme to better reflect the current state of the system, although it is still incomplete, so I will update the readme some more in the coming days (6th May 2026).


Sections
Status
Description			Integral & Floating point number boxes


Sections
Status
Description	Keep network load lighter when there are many recipients and senders	Message datums contain a message tag, to be routed to a list of game messages to display to the target actor	Registers network managers to route RX/TX messages to managed actors


Sections
Status
Description	Configurable rulesets and a ruleset evaluator. Make custom rulesets or recreate existing well-known rulesets	Configurable Skills & Skilltrees	Configurable level scaling and stat modifier rules	Replicated progression component and progression datums (fastarrays again)	Maps data so we can access it at O(1) when searching for specific default data	Base UMG widgets for developers to bootstrap from or to use as example for progression related widgets


Sections			Sections
Status			Status
Description			Description

TODO: Need to finish up the ruleset code, it was mostly done but was a long time ago since I wrote it so I will need to investigate first

TODO: Need to assess if this needs more substantial additions. Not very likely. I do vaguely remembe


Sections
Status
Description	Configurable tracer for interactions or other purposes	Base interact actor, Interact component, and Interact interface	Base UMG widgets for developers to bootstrap from or to use as example for progression related widgets

TODO: Need to assess if this needs more substantial additions


Sections
Status
Description	Configurable item definitions via datatable	MassFragment base, can interact with inventory components	UObject component base, can interact with inventory fragments


Sections			Sections
Status			Status
Description	N/A	N/A	Description	Replicating items and item counts (fastarrays again) for the inventory component. Inventory Fragment is currently not being replicated iirc

TODO: Need to assess if this needs more substantial additions


Sections
Status
Description	Generates custom octree nodes and assigns them to entities Custom octree nodes that packs certain entity data	Calculates dynamic hashgrid cells Recalculates locations to dynamic hashgrid mapping	Scans hashgrid for entities to ping Pings JobTag to entities to target given actor	Uses hashgrid for actor placement Tracks buildings and owners Caches build system recipes	Custom Mass Tasks, Processors, Evaluators, Fragments, Traits Custom State tree behaviour schema


Sections
Status
Description	Applies different camera presets/setups using 'FPDCameraManagerSettings' Allows for custom presets/setups (Has a default base RTS preset )	UPDATEME UPDATEME	Ghost building interface, used by actors that wants to be managed by the builder system Builder Interface, used by actors that wants to be able to build other actors


Sections
Status
Description	Bootstrapped from Unreal Conversation	Mission editor classes are halfway implemented in another repo, will move here when it is more complete and continue work then

TODO: Need to move this over to PDOpen and to wrap up the mission editor code in PDOpen and port it over here when done.


Sections
Status
Description


Sections
Status
Description	GodHand player pawn (Basic godhand concept. Uses 'IPDRTSBuilderInterface, IRTSOInputInterface, IRTSOConversationInterface')	Player Controller (Uses 'IRTSOInputInterface, IPDRTSBuilderInterface, IRTSOActionLogInterface')

TODO: Need to assess if this needs more substantial additions


Sections
Status
Description	Handling interaction logic for resource buildings or building ghost steps	Resource type interactables, makes use of the inventory system	Handles triggering unreal conversations and mmanages checking and applying mission tags

TODO: Need to assess if this needs more substantial additions


Sections
Status
Description	Custom tasks that hooks into other systems, such as interaction or inventory	Custom fragments that uses data for other systems, such as interaction or inventory

TODO: Need to assess if this needs more substantial additions. Very likely there is need for furhter tasks w.r.t specialized reource gathering or stacked build tasks


Sections
Status
Description	Tag based mission system. Tags serve as missions and as flags for objectives/sideobjectives states.	Custom conversation actor that uses one of the interaction systems intrfaces and has interaction logic that handles checking and granting for mission tags	Slate core widgets with UMG wrappers. Used for a Mission Menu View and Mission/Objective Lists

TODO: integrate with mission/quest plugin in PDOpen when getting back to that

TODO: Need to move this over to PDOpen and to wrap up the mission editor code in PDOpen and port it over here when done.


Sections
Status
Description	Handles login player controller flow and loads in their buildings if they have any	Handles level transitions	Handles Autosaving logic, timers and auto save slots

TODO: Single player and custom server matchmaking is the plan, and official servers I guess could run game with anti-cheat? not sure yet, but a login flow and loading logic is needed for the p2p part, the single player part stores the savefile on

TODO: Very likely I will need to add more login related code and loading more player data than just buildings ()


Sections
Status
Description	Draws selection marquee and gathers results	Minimap logic (Deprecated, moved to compute shaders)

TODO: Need to assess if this needs more substantial additions. Very likely there is need for it later down the line


Sections
Status
Description	See 'User Settings' for more details	Custom Save/load menu, Slate base	N/A	Mission view widgets, Slate base

TODO: Need to assess if this needs more substantial additions. Somewhat likely there is need for it later down the line


Sections
Status
Description	Mix of slate and UMG to generate widget slots for each settings type	Supports POD data settings types, String settings type, Enum/String selector settings types, vector settings types	Settings bindable to actual in-game data, as to make thigns more plug and play an avoid having hardocded edge cases for each binding

TODO: Need to fix a darn bug I notced when overriding the slate widget for certain overriden boolean members (specifically those that via a checkbox and control access to other variables)


Sections
Status
Description	Mix of slate and UMG widgets	Reads the current save data and allows for live modification within the game

TODO: Update UI, looks horrendous. Alos while at it add import and export from custom binary format and also json format (With this many entities I might need to be creative with the Json structure so I can cram alot of data into few fields)


Sections
Status
Description	Injects user defined strings and generates tags at game startup. Meant ot be used to allowing mods that target different systems liek the inventory system, skill system etc


Sections
Status
Description	Build system HUD View buttons (mostly slate)	Conversation system HUD View Elements (mostly slate)

TODO: Need to assess if this needs more substantial additions. Somewhat likely there is need for it later down the line


Sections
Status
Description	Stacks input for IA actions, mainly due to a bug in 'Enhanced Input' causing input data to be reset


Sections
Status
Description	Global Minimap splatter shader (used for splatting mass entities unto a RT texture, need to reuse for other data I want on the minimap RT texture)

TODO: I have more texture shaders and compute shaders I want to write and make use of for other data visualization w.r.t. entities

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RTSOpen

Notes

Integral & Floating point number boxes

Keep network load lighter when there are many recipients and senders

Message datums contain a message tag, to be routed to a list of game messages to display to the target actor

Registers network managers to route RX/TX messages to managed actors

Configurable rulesets and a ruleset evaluator. Make custom rulesets or recreate existing well-known rulesets

Configurable Skills & Skilltrees

Configurable level scaling and stat modifier rules

Replicated progression component and progression datums (fastarrays again)

Maps data so we can access it at O(1) when searching for specific default data

Base UMG widgets for developers to bootstrap from or to use as example for progression related widgets

TODO: Need to finish up the ruleset code, it was mostly done but was a long time ago since I wrote it so I will need to investigate first

TODO: Need to assess if this needs more substantial additions. Not very likely. I do vaguely remembe

Configurable tracer for interactions or other purposes

Base interact actor, Interact component, and Interact interface

Base UMG widgets for developers to bootstrap from or to use as example for progression related widgets

TODO: Need to assess if this needs more substantial additions

Configurable item definitions via datatable

MassFragment base, can interact with inventory components

UObject component base, can interact with inventory fragments

N/A

N/A

Replicating items and item counts (fastarrays again) for the inventory component.Inventory Fragment is currently not being replicated iirc

TODO: Need to assess if this needs more substantial additions

Generates custom octree nodes and assigns them to entities Custom octree nodes that packs certain entity data

Calculates dynamic hashgrid cells Recalculates locations to dynamic hashgrid mapping

Scans hashgrid for entities to ping Pings JobTag to entities to target given actor

Uses hashgrid for actor placement Tracks buildings and owners Caches build system recipes

Custom Mass Tasks, Processors, Evaluators, Fragments, Traits Custom State tree behaviour schema

Applies different camera presets/setups using 'FPDCameraManagerSettings' Allows for custom presets/setups (Has a default base RTS preset )

UPDATEME UPDATEME

Ghost building interface, used by actors that wants to be managed by the builder system Builder Interface, used by actors that wants to be able to build other actors

Bootstrapped from Unreal Conversation

Mission editor classes are halfway implemented in another repo, will move here when it is more complete and continue work then

TODO: Need to move this over to PDOpen and to wrap up the mission editor code in PDOpen and port it over here when done.

GodHand player pawn (Basic godhand concept. Uses 'IPDRTSBuilderInterface, IRTSOInputInterface, IRTSOConversationInterface')

Player Controller (Uses 'IRTSOInputInterface, IPDRTSBuilderInterface, IRTSOActionLogInterface')

TODO: Need to assess if this needs more substantial additions

Handling interaction logic for resource buildings or building ghost steps

Resource type interactables, makes use of the inventory system

Handles triggering unreal conversations and mmanages checking and applying mission tags

TODO: Need to assess if this needs more substantial additions

Custom tasks that hooks into other systems, such as interaction or inventory

Custom fragments that uses data for other systems, such as interaction or inventory

TODO: Need to assess if this needs more substantial additions. Very likely there is need for furhter tasks w.r.t specialized reource gathering or stacked build tasks

Tag based mission system. Tags serve as missions and as flags for objectives/sideobjectives states.

Custom conversation actor that uses one of the interaction systems intrfaces and has interaction logic that handles checking and granting for mission tags

Slate core widgets with UMG wrappers. Used for a Mission Menu View and Mission/Objective Lists

TODO: integrate with mission/quest plugin in PDOpen when getting back to that

TODO: Need to move this over to PDOpen and to wrap up the mission editor code in PDOpen and port it over here when done.

Handles login player controller flow and loads in their buildings if they have any

Handles level transitions

Handles Autosaving logic, timers and auto save slots

TODO: Single player and custom server matchmaking is the plan, and official servers I guess could run game with anti-cheat? not sure yet, but a login flow and loading logic is needed for the p2p part, the single player part stores the savefile on

TODO: Very likely I will need to add more login related code and loading more player data than just buildings ()

Draws selection marquee and gathers results

Minimap logic (Deprecated, moved to compute shaders)

TODO: Need to assess if this needs more substantial additions. Very likely there is need for it later down the line

See 'User Settings' for more details

Custom Save/load menu, Slate base

N/A

Mission view widgets, Slate base

TODO: Need to assess if this needs more substantial additions. Somewhat likely there is need for it later down the line

Mix of slate and UMG to generate widget slots for each settings type

Supports POD data settings types, String settings type, Enum/String selector settings types, vector settings types

Settings bindable to actual in-game data, as to make thigns more plug and play an avoid having hardocded edge cases for each binding

TODO: Need to fix a darn bug I notced when overriding the slate widget for certain overriden boolean members (specifically those that via a checkbox and control access to other variables)

Mix of slate and UMG widgets

Reads the current save data and allows for live modification within the game

TODO: Update UI, looks horrendous. Alos while at it add import and export from custom binary format and also json format (With this many entities I might need to be creative with the Json structure so I can cram alot of data into few fields)

Injects user defined strings and generates tags at game startup. Meant ot be used to allowing mods that target different systems liek the inventory system, skill system etc

Build system HUD View buttons (mostly slate)

Conversation system HUD View Elements (mostly slate)

Configurable rulesets and a ruleset evaluator.

Make custom rulesets or recreate existing well-known rulesets

Replicating items and item counts (fastarrays again) for the inventory component.
Inventory Fragment is currently not being replicated iirc

Generates custom octree nodes and assigns them to entities

Custom octree nodes that packs certain entity data

Calculates dynamic hashgrid cells

Recalculates locations to dynamic hashgrid mapping

Scans hashgrid for entities to ping

Pings JobTag to entities to target given actor

Uses hashgrid for actor placement

Tracks buildings and owners

Caches build system recipes

Custom Mass Tasks, Processors, Evaluators, Fragments, Traits

Custom State tree behaviour schema

Applies different camera presets/setups using 'FPDCameraManagerSettings'

Allows for custom presets/setups (Has a default base RTS preset )

UPDATEME

UPDATEME

Ghost building interface, used by actors that wants to be managed by the builder system

Builder Interface, used by actors that wants to be able to build other actors