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Merge pull request https://github.com/TrinityCore/TrinityCore/pull/13650

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RandomMovementGenerator - no need for extra complexity in computing height

(cherry picked from commit 1b9aca10c7)
This commit is contained in:
z0ldrax
2014-12-01 13:07:00 +01:00
committed by jackpoz
parent e07054ff2d
commit 17039cd922
1 changed files with 3 additions and 3 deletions
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6
src/server/game/Movement/MovementGenerators/RandomMovementGenerator.cpp
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@@ -56,12 +56,12 @@ void RandomMovementGenerator<Creature>::_setRandomLocation(Creature* creature)
Trinity::NormalizeMapCoord(destX);
Trinity::NormalizeMapCoord(destY);
travelDistZ = distanceX*distanceX + distanceY*distanceY;
travelDistZ = range; // sin^2+cos^2=1, so travelDistZ=range^2; no need for sqrt below
if (is_air_ok) // 3D system above ground and above water (flying mode)
{
// Limit height change
const float distanceZ = float(rand_norm()) * std::sqrt(travelDistZ)/2.0f;
const float distanceZ = float(rand_norm()) * travelDistZ/2.0f;
destZ = respZ + distanceZ;
float levelZ = map->GetWaterOrGroundLevel(destX, destY, destZ-2.0f);
@@ -73,7 +73,7 @@ void RandomMovementGenerator<Creature>::_setRandomLocation(Creature* creature)
else // 2D only
{
// 10.0 is the max that vmap high can check (MAX_CAN_FALL_DISTANCE)
travelDistZ = travelDistZ >= 100.0f ? 10.0f : std::sqrt(travelDistZ);
travelDistZ = travelDistZ >= 10.0f ? 10.0f : travelDistZ;
// The fastest way to get an accurate result 90% of the time.
// Better result can be obtained like 99% accuracy with a ray light, but the cost is too high and the code is too long.