AI Planners

AI planners give battle scripts the ability to group units together under AI control, and to give that group high-level orders such as ai_planner:defend_position or ai_planner:attack_unit and have those units work together to intelligently carry out the order.

This code interface is wrapped in script by the script_ai_planner interface, and it is recommended that client scripts use that interface rather than this one as it provides some ease-of-use improvements and additional wrapped behaviours.        

It is not recommended to try and use ai planners during siege battles, as the siege battle ai system has a tendency to override unit behaviour - see a battle ai programmer for more details.

Loaded in Campaign Loaded in Campaign
Loaded in Battle Loaded in Battle
Loaded in Frontend Loaded in Frontend
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Creation

AI planners are created with the alliance:create_ai_unit_planner function call on the battle_alliance interface. Once one is created and returned, units belonging to that alliance may be added to it and orders issued to them with the functions below.

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Adding and Removing Units

ai_planner:add_units(... units)
Adds units to the ai planner. One or more battle_unit objects may be specified as arguments. Each unit specified must belong to the battle_alliance from which the planner was created. If units are added to the planner after an order has been issued then those units will start following that order automatically.

Parameters:

1

...

One or more battle_unit objects.

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 142

ai_planner:remove_units(... units)
Removes units from the ai planner. One or more battle_unit objects may be specified as arguments. Each unit specified must have previously been added to the planner with ai_planner:add_units.

Parameters:

1

...

One or more battle_unit objects.

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 181

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Orders

ai_planner:defend_position(battle_vector position, number radius)

Instructs units in the ai planner to adopt a defensive formation, then move to and defend a specified position from any enemies, staying within a specified radius.

Parameters:

1

battle_vector

Position which the units will defend.

2

number

Radius in m around the position in which the units will roam.

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 217

ai_planner:attack_unit(battle_unit target)

Instructs units in the ai planner to adopt an offensive formation and then attack a specified unit and any other nearby enemies. Other enemies encountered along the way will be intelligently reacted to.

Parameters:

1

battle_unit

target

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 250

ai_planner:rush_unit(battle_unit target)

Instructs units in the ai planner to attack a specified unit and any other nearby enemies, without too much reforming. Other enemies encountered along the way will be intelligently reacted to.

Parameters:

1

battle_unit

target

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 277

ai_planner:move_to_position(battle_vector position)

Instructs units in the ai planner to adopt an movement formation and then move to a specified position.

Parameters:

1

battle_vector

position

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 304

ai_planner:clear_objective()
Clears the current order of the ai planner.

Returns:

  1. nil

defined in ../../common/EmpireBattle/Source/BattleScript/BattleScriptAIObjective.cpp, line 334

Last updated 12/08/2022 11:56:59