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Add a threshold to AiFollow distance

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Idle animations can move the actor around slightly, which sometimes causes AiFollow to constantly toggle between "arrived" and "following" state even when the player isn't moving. Could be observed by summoning a bonelord.
This commit is contained in:
scrawl 2015-09-26 01:55:12 +02:00
parent 8e69c80bf6
commit 387624e158
1 changed files with 15 additions and 5 deletions
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20
apps/openmw/mwmechanics/aifollow.cpp
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@ -20,8 +20,9 @@ namespace MWMechanics
struct AiFollowStorage : AiTemporaryBase
{
float mTimer;
bool mMoving;
AiFollowStorage() : mTimer(0.f) {}
AiFollowStorage() : mTimer(0.f), mMoving(false) {}
};
int AiFollow::mFollowIndexCounter = 0;
@ -64,10 +65,11 @@ bool AiFollow::execute (const MWWorld::Ptr& actor, CharacterController& characte
actor.getClass().getCreatureStats(actor).setDrawState(DrawState_Nothing);
AiFollowStorage& storage = state.get<AiFollowStorage>();
// AiFollow requires the target to be in range and within sight for the initial activation
if (!mActive)
{
AiFollowStorage& storage = state.get<AiFollowStorage>();
storage.mTimer -= duration;
if (storage.mTimer < 0)
@ -126,7 +128,15 @@ bool AiFollow::execute (const MWWorld::Ptr& actor, CharacterController& characte
//Set the target destination from the actor
ESM::Pathgrid::Point dest = target.getRefData().getPosition().pos;
if(distance(dest, pos.pos[0], pos.pos[1], pos.pos[2]) < followDistance) //Stop when you get close
float dist = distance(dest, pos.pos[0], pos.pos[1], pos.pos[2]);
const float threshold = 10;
if (storage.mMoving) //Stop when you get close
storage.mMoving = (dist > followDistance);
else
storage.mMoving = (dist > followDistance + threshold);
if(!storage.mMoving)
{
actor.getClass().getMovementSettings(actor).mPosition[1] = 0;
@ -141,9 +151,9 @@ bool AiFollow::execute (const MWWorld::Ptr& actor, CharacterController& characte
}
//Check if you're far away
if(distance(dest, pos.pos[0], pos.pos[1], pos.pos[2]) > 450)
if(dist > 450)
actor.getClass().getCreatureStats(actor).setMovementFlag(MWMechanics::CreatureStats::Flag_Run, true); //Make NPC run
else if(distance(dest, pos.pos[0], pos.pos[1], pos.pos[2]) < 325) //Have a bit of a dead zone, otherwise npc will constantly flip between running and not when right on the edge of the running threshhold
else if(dist < 325) //Have a bit of a dead zone, otherwise npc will constantly flip between running and not when right on the edge of the running threshhold
actor.getClass().getCreatureStats(actor).setMovementFlag(MWMechanics::CreatureStats::Flag_Run, false); //make NPC walk
return false;