Unreal Engine BT's changing based on states. Proof of concept

When to use:

• When you want to create a lot of small generic BTs and combine them for AI characters
• When you want to create AI characters with interaction based logic. Interactions could be used as states
• When you want to have same behavior for some states for all AI characters (for example, Disabled/Stunned state)
• When you want to try something new :)

Main concept:

• AI character has specific controller
• Controller has map with different behaviors based on states
• Every state has own BT

Test implementation:

• Spawn legioner with "Space". State changes to Spawning. BT starts
• After BT is end, it's waiting
• Press "1" to change state to Attacking. Old BT is stopped and new one is running
• BT is working until we press "2" to change state to Blocking. Old BT is stopped and new one is running

How to improve:

• Buffer for queue of states to change
• Change states conditions implementation