Unit Tests for AI Planning Subtrees not having required element/component (#77539)

## About The Pull Request

Hey there,

I've personally fallen for this stupid thing twice (in #77503 and #75627
(d3575161ca)), so I decided to spend a few
hours to crack out a unit test to ensure that I (and no one else) falls
for this stupid thing again.

Let me know if there's a smarter way to code something like this, but I
couldn't figure out a better way to accomodate the current framework and
be as agnostic to certain oddities as possible.
## Why It's Good For The Game
Catches stuff like this:

```txt
[2023-08-11 21:10:04.019]     FAILURE #1: The mob Garden Gnome does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #2: The mob the morph does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #3: The mob the guard spiderling (946) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #4: The mob the ambush spiderling (255) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #5: The mob the scout spiderling (375) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #6: The mob the flesh spiderling (337) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #7: The mob the hunter spiderling (869) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #8: The mob the nurse spiderling (629) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #9: The mob the tangle spiderling (19) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #10: The mob the broodmother spiderling (855) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #11: The mob the viper spiderling (519) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #12: The mob the tarantula spiderling (963) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
 -     FAILURE #13: The mob the spiderling (100) does not have ANY instances of TRAIT_SUBTREE_REQUIRED_ELEMENT, but has a planning subtree (/datum/ai_planning_subtree/target_retaliate/to_flee) that requires it! at code/modules/unit_tests/ensure_subtree_element.dm:45
```

(ignore the part about gnomes and morphs, this was an earlier version of
the unit test. everything else was relevant and is fixed)
## Changelog
🆑
fix: Growing spiders will now retaliate against you like they were
always meant to.
/🆑
This commit is contained in:
san7890
2023-08-12 16:08:43 -06:00
committed by GitHub
parent 56f8b64461
commit 8e08a38cfb
11 changed files with 86 additions and 4 deletions
@@ -12,8 +12,8 @@
/datum/ai_planning_subtree/basic_melee_attack_subtree/average_speed
melee_attack_behavior = /datum/ai_behavior/basic_melee_attack/average_speed
//If you give this to something without the element you are a dumbass.
/datum/ai_planning_subtree/basic_ranged_attack_subtree
operational_datums = list(/datum/element/ranged_attacks)
var/datum/ai_behavior/basic_ranged_attack/ranged_attack_behavior = /datum/ai_behavior/basic_ranged_attack
/datum/ai_planning_subtree/basic_ranged_attack_subtree/SelectBehaviors(datum/ai_controller/controller, seconds_per_tick)
@@ -1,5 +1,6 @@
/// Sets the BB target to a mob which you can see and who has recently attacked you
/datum/ai_planning_subtree/target_retaliate
operational_datums = list(/datum/element/ai_retaliate, /datum/component/ai_retaliate_advanced)
/// Blackboard key which tells us how to select valid targets
var/targetting_datum_key = BB_TARGETTING_DATUM
/// Blackboard key in which to store selected target