mirror of
https://github.com/mod-playerbots/mod-playerbots.git
synced 2026-01-16 02:10:28 +00:00
c9cc4324d3
<!-- > [!WARNING] > **This is a DRAFT PR.** > The structure is not definitive. The code might not be optimised yet. It might not even start nor compile yet. > **Don't panic. ✋ It's going to be ok. 👌 We can make modifications, we can fix things.** 😁 --> # Description This PR aims to refactor the NextAction declaration to achieve two goals: ## Eliminate C-style sentinel arrays Currently, a double pointer (`NextAction**`) approach is being used. This an old pre-C++11 (< 2011) trick before `std::vector<>` became a thing. This approach is painful for developers because they constantly need to declare their `NextAction` arrays as: ```cpp NextAction::array(0, new NextAction("foo", 1.0f), nullptr) ``` Instead of: ```cpp { new NextAction("foo", 1.0f) } ``` The first argument of `NextAction::array` is actually a hack. It is used to have a named argument so `va_args` can find the remaining arguments. It is set to 0 everywhere but in fact does nothing. This is very confusing to people unfamiliar with this antiquated syntax. The last argument `nullptr` is what we call a sentinel. It's a `nullptr` because `va_args` is looking for a `nullptr` to stop iterating. It's also a hack and also leads to confusion. ## Eliminate unnecessary pointers for `NextAction` Pointers can be used for several reasons, to cite a few: - Indicate strong, absolute identity. - Provide strong but transferable ownership (unlike references). - When a null value is acceptable (`nullptr`). - When copy is expensive. `NextAction` meets none of these criteria: - It has no identity because it is purely behavioural. - It is never owned by anything as it is passed around and never fetched from a registry. - The only situations where it can be `nullptr` are errors that should in fact throw an `std::invalid_argument` instead. - They are extremely small objects that embark a single `std::string` and a single `float`. Pointers should be avoided when not strictly necessary because they can quickly lead to undefined behaviour due to unhandled `nullptr` situations. They also make the syntax heavier due to the necessity to constantly check for `nullptr`. Finally, they aren't even good for performance in that situation because shifting a pointer so many times is likely more expensive than copying such a trivial object. # End goal The end goal is to declare `NextAction` arrays this way: ```cpp { NextAction("foo", 1.0f) } ``` > [!NOTE] > Additional note: `NextAction` is nothing but a hacky proxy to an `Action` constructor. This should eventually be reworked to use handles instead of strings. This would make copying `NextAction` even cheaper and remove the need for the extremely heavy stringly typed current approach. Stringly typed entities are a known anti-pattern so we need to move on from those.
102 lines
4.5 KiB
C++
102 lines
4.5 KiB
C++
/*
|
|
* Copyright (C) 2016+ AzerothCore <www.azerothcore.org>, released under GNU AGPL v3 license, you may redistribute it
|
|
* and/or modify it under version 3 of the License, or (at your option), any later version.
|
|
*/
|
|
|
|
#include "HealDruidStrategy.h"
|
|
|
|
#include "Playerbots.h"
|
|
|
|
class HealDruidStrategyActionNodeFactory : public NamedObjectFactory<ActionNode>
|
|
{
|
|
public:
|
|
HealDruidStrategyActionNodeFactory() {
|
|
creators["nourish on party"] = &nourtish_on_party;
|
|
}
|
|
|
|
private:
|
|
static ActionNode* nourtish_on_party([[maybe_unused]] PlayerbotAI* botAI)
|
|
{
|
|
return new ActionNode("nourish on party",
|
|
/*P*/ {},
|
|
/*A*/ { NextAction("healing touch on party") },
|
|
/*C*/ {});
|
|
}
|
|
};
|
|
|
|
HealDruidStrategy::HealDruidStrategy(PlayerbotAI* botAI) : GenericDruidStrategy(botAI)
|
|
{
|
|
actionNodeFactories.Add(new HealDruidStrategyActionNodeFactory());
|
|
}
|
|
|
|
void HealDruidStrategy::InitTriggers(std::vector<TriggerNode*>& triggers)
|
|
{
|
|
GenericDruidStrategy::InitTriggers(triggers);
|
|
|
|
triggers.push_back(new TriggerNode(
|
|
"party member to heal out of spell range",
|
|
{ NextAction("reach party member to heal", ACTION_CRITICAL_HEAL + 9) }));
|
|
|
|
// CRITICAL
|
|
triggers.push_back(
|
|
new TriggerNode("party member critical health",
|
|
{
|
|
NextAction("tree form", ACTION_CRITICAL_HEAL + 4.1f),
|
|
NextAction("swiftmend on party", ACTION_CRITICAL_HEAL + 4),
|
|
NextAction("regrowth on party", ACTION_CRITICAL_HEAL + 3),
|
|
NextAction("wild growth on party", ACTION_CRITICAL_HEAL + 2),
|
|
NextAction("nourish on party", ACTION_CRITICAL_HEAL + 1),
|
|
}));
|
|
|
|
triggers.push_back(
|
|
new TriggerNode("party member critical health",
|
|
{ NextAction("nature's swiftness", ACTION_CRITICAL_HEAL + 4) }));
|
|
|
|
triggers.push_back(new TriggerNode(
|
|
"group heal setting",
|
|
{
|
|
NextAction("tree form", ACTION_MEDIUM_HEAL + 2.3f),
|
|
NextAction("wild growth on party", ACTION_MEDIUM_HEAL + 2.2f),
|
|
NextAction("rejuvenation on not full", ACTION_MEDIUM_HEAL + 2.1f),
|
|
}));
|
|
|
|
triggers.push_back(
|
|
new TriggerNode("medium group heal setting",
|
|
{
|
|
NextAction("tree form", ACTION_CRITICAL_HEAL + 0.6f),
|
|
NextAction("tranquility", ACTION_CRITICAL_HEAL + 0.5f) }));
|
|
|
|
// LOW
|
|
triggers.push_back(
|
|
new TriggerNode("party member low health",
|
|
{ NextAction("tree form", ACTION_MEDIUM_HEAL + 1.5f),
|
|
NextAction("wild growth on party", ACTION_MEDIUM_HEAL + 1.4f),
|
|
NextAction("regrowth on party", ACTION_MEDIUM_HEAL + 1.3f),
|
|
NextAction("swiftmend on party", ACTION_MEDIUM_HEAL + 1.2),
|
|
NextAction("nourish on party", ACTION_MEDIUM_HEAL + 1.1f),
|
|
}));
|
|
|
|
// MEDIUM
|
|
triggers.push_back(
|
|
new TriggerNode("party member medium health",
|
|
{
|
|
NextAction("tree form", ACTION_MEDIUM_HEAL + 0.5f),
|
|
NextAction("wild growth on party", ACTION_MEDIUM_HEAL + 0.4f),
|
|
NextAction("rejuvenation on party", ACTION_MEDIUM_HEAL + 0.3f),
|
|
NextAction("regrowth on party", ACTION_MEDIUM_HEAL + 0.2f),
|
|
NextAction("nourish on party", ACTION_MEDIUM_HEAL + 0.1f) }));
|
|
|
|
// almost full
|
|
triggers.push_back(
|
|
new TriggerNode("party member almost full health",
|
|
{ NextAction("wild growth on party", ACTION_LIGHT_HEAL + 0.3f),
|
|
NextAction("rejuvenation on party", ACTION_LIGHT_HEAL + 0.2f),
|
|
NextAction("regrowth on party", ACTION_LIGHT_HEAL + 0.1f) }));
|
|
|
|
triggers.push_back(
|
|
new TriggerNode("medium mana", { NextAction("innervate", ACTION_HIGH + 5) }));
|
|
|
|
triggers.push_back(new TriggerNode("enemy too close for spell",
|
|
{ NextAction("flee", ACTION_MOVE + 9) }));
|
|
}
|