Fix melee reach target

conf/playerbots.conf.dist

@@ -275,7 +275,7 @@ AiPlayerbot.HealDistance = 38.5
 AiPlayerbot.LootDistance = 15.0
 AiPlayerbot.FleeDistance = 5.0
 AiPlayerbot.TooCloseDistance = 5.0
-AiPlayerbot.MeleeDistance = 0.01
+AiPlayerbot.MeleeDistance = 0.75
 AiPlayerbot.FollowDistance = 1.5
 AiPlayerbot.WhisperDistance = 6000.0
 AiPlayerbot.ContactDistance = 0.45

src/strategy/actions/MovementActions.cpp

@@ -149,7 +149,7 @@ bool MovementAction::MoveTo(uint32 mapId, float x, float y, float z, bool idle,
     // if (bot->Unit::IsFalling()) {
     //     bot->Say("I'm falling", LANG_UNIVERSAL);
     // }
-    float distance = bot->GetDistance(x, y, z);
+    float distance = bot->GetExactDist(x, y, z);
     if (distance > sPlayerbotAIConfig->contactDistance)
     {
         WaitForReach(distance);
@@ -671,7 +671,41 @@ bool MovementAction::MoveTo(Unit* target, float distance)
     float ty = target->GetPositionY();
     float tz = target->GetPositionZ();
 
-    float distanceToTarget = bot->GetDistance2d(target);
+    float distanceToTarget = bot->GetDistance(target);
+    float angle = bot->GetAngle(target);
+    float needToGo = distanceToTarget - distance;
+
+    float maxDistance = sPlayerbotAIConfig->spellDistance;
+    if (needToGo > 0 && needToGo > maxDistance)
+        needToGo = maxDistance;
+    else if (needToGo < 0 && needToGo < -maxDistance)
+        needToGo = -maxDistance;
+
+    float dx = cos(angle) * needToGo + bx;
+    float dy = sin(angle) * needToGo + by;
+    float dz; // = std::max(bz, tz); // calc accurate z position to avoid stuck
+    if (distanceToTarget > CONTACT_DISTANCE) {
+        dz = bz + (tz - bz) * (needToGo / distanceToTarget);
+    } else {
+        dz = tz;
+    }
+    return MoveTo(target->GetMapId(), dx, dy, dz);
+}
+
+bool MovementAction::ReachCombatTo(Unit* target, float distance)
+{
+    if (!IsMovingAllowed(target))
+        return false;
+
+    float bx = bot->GetPositionX();
+    float by = bot->GetPositionY();
+    float bz = bot->GetPositionZ();
+
+    float tx = target->GetPositionX();
+    float ty = target->GetPositionY();
+    float tz = target->GetPositionZ();
+    float combatDistance = bot->GetCombatReach() + target->GetCombatReach();
+    float distanceToTarget = bot->GetExactDist(target) - combatDistance;
     float angle = bot->GetAngle(target);
     float needToGo = distanceToTarget - distance;
 

src/strategy/actions/MovementActions.h

@@ -29,6 +29,7 @@ class MovementAction : public Action
         bool Follow(Unit* target, float distance = sPlayerbotAIConfig->followDistance);
         bool Follow(Unit* target, float distance, float angle);
         bool ChaseTo(WorldObject* obj, float distance = 0.0f, float angle = 0.0f);
+        bool ReachCombatTo(Unit* target, float distance = 0.0f);
         float MoveDelay(float distance);
         void WaitForReach(float distance);
         bool IsMovingAllowed(Unit* target);

src/strategy/actions/ReachTargetActions.cpp

@@ -10,7 +10,7 @@
 
 bool ReachTargetAction::Execute(Event event)
 {
-    return MoveTo(AI_VALUE(Unit*, GetTargetName()), distance);
+    return ReachCombatTo(AI_VALUE(Unit*, GetTargetName()), distance);
 }
 
 bool ReachTargetAction::isUseful()
@@ -19,8 +19,9 @@ bool ReachTargetAction::isUseful()
     if (bot->GetCurrentSpell(CURRENT_CHANNELED_SPELL) != nullptr) {
         return false;
     }
-
-    return AI_VALUE2(float, "distance", GetTargetName()) > (distance + sPlayerbotAIConfig->contactDistance);
+    Unit* target = GetTarget();
+    // float dis = distance + CONTACT_DISTANCE;
+    return target && !bot->IsWithinCombatRange(target, distance); // sServerFacade->IsDistanceGreaterThan(AI_VALUE2(float, "distance", GetTargetName()), distance);
 }
 
 std::string const ReachTargetAction::GetTargetName()

src/strategy/druid/FeralDruidStrategy.cpp

@@ -98,7 +98,7 @@ void FeralDruidStrategy::InitTriggers(std::vector<TriggerNode*>& triggers)
 
     // triggers.push_back(new TriggerNode("not facing target", NextAction::array(0, new NextAction("set facing", ACTION_NORMAL + 7), nullptr)));
     triggers.push_back(new TriggerNode("enemy out of melee", NextAction::array(0, new NextAction("reach melee", ACTION_NORMAL + 8), nullptr)));
-    triggers.push_back(new TriggerNode("enemy too close for melee", NextAction::array(0, new NextAction("move out of enemy contact", ACTION_NORMAL + 8), nullptr)));
+    // triggers.push_back(new TriggerNode("enemy too close for melee", NextAction::array(0, new NextAction("move out of enemy contact", ACTION_NORMAL + 8), nullptr)));
     triggers.push_back(new TriggerNode("critical health", NextAction::array(0, new NextAction("survival instincts", ACTION_EMERGENCY + 1), nullptr)));
     triggers.push_back(new TriggerNode("omen of clarity", NextAction::array(0, new NextAction("omen of clarity", ACTION_HIGH + 9), nullptr)));
     triggers.push_back(new TriggerNode("player has flag", NextAction::array(0, new NextAction("dash", ACTION_EMERGENCY + 2), nullptr)));

src/strategy/triggers/RangeTriggers.cpp

@@ -131,7 +131,9 @@ bool EnemyIsCloseTrigger::IsActive()
 bool OutOfRangeTrigger::IsActive()
 {
     Unit* target = AI_VALUE(Unit*, GetTargetName());
-    return target && sServerFacade->IsDistanceGreaterThan(AI_VALUE2(float, "distance", GetTargetName()), distance);
+    // increase contact distance to prevent calculation error
+    float dis = distance + CONTACT_DISTANCE;
+    return target && !bot->IsWithinCombatRange(target, dis); // sServerFacade->IsDistanceGreaterThan(AI_VALUE2(float, "distance", GetTargetName()), distance);
 }
 
 EnemyOutOfSpellRangeTrigger::EnemyOutOfSpellRangeTrigger(PlayerbotAI* botAI) : OutOfRangeTrigger(botAI, "enemy out of spell range", botAI->GetRange("spell"))