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[6890] Implemented more correct way of calculating fall damage by using fall distance and not fall time. Thanks to DasMy for finding an appropriate formula

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This commit is contained in:
arrai 2008-12-10 14:43:22 +01:00
parent 3da9f3f4cc
commit 69e9ab315f
3 changed files with 14 additions and 9 deletions
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20
src/game/MovementHandler.cpp
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@ -290,22 +290,24 @@ void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
// fall damage generation (ignore in flight case that can be triggered also at lags in moment teleportation to another map).
if (recv_data.GetOpcode() == MSG_MOVE_FALL_LAND && !GetPlayer()->isInFlight())
{
// calculate total z distance of the fall
float z_diff = GetPlayer()->m_fallMovementInfo.z - movementInfo.z;
sLog.outDebug("zDiff = %f", z_diff);
Player *target = GetPlayer();
//Players with Feather Fall or low fall time, or physical immunity (charges used) are ignored
if (movementInfo.fallTime > 1100 && !target->isDead() && !target->isGameMaster() &&
//Players with Feather Fall or physical immunity (charges used) are ignored
if (!target->isDead() && !target->isGameMaster() &&
!target->HasAuraType(SPELL_AURA_HOVER) && !target->HasAuraType(SPELL_AURA_FEATHER_FALL) &&
!target->HasAuraType(SPELL_AURA_FLY) && !target->IsImmunedToDamage(SPELL_SCHOOL_MASK_NORMAL,true) )
{
//Safe fall, fall time reduction
//Safe fall, fall height reduction
int32 safe_fall = target->GetTotalAuraModifier(SPELL_AURA_SAFE_FALL);
uint32 fall_time = (movementInfo.fallTime > (safe_fall*10)) ? movementInfo.fallTime - (safe_fall*10) : 0;
if(fall_time > 1100) //Prevent damage if fall time < 1100
float damageperc = 0.018f*(z_diff-safe_fall)-0.2426f;
if(damageperc >0 )
{
//Fall Damage calculation
float fallperc = float(fall_time)/1100;
uint32 damage = (uint32)(((fallperc*fallperc -1) / 9 * target->GetMaxHealth())*sWorld.getRate(RATE_DAMAGE_FALL));
uint32 damage = (uint32)(damageperc * target->GetMaxHealth()*sWorld.getRate(RATE_DAMAGE_FALL));
float height = movementInfo.z;
target->UpdateGroundPositionZ(movementInfo.x,movementInfo.y,height);
@ -359,6 +361,8 @@ void WorldSession::HandleMovementOpcodes( WorldPacket & recv_data )
GetPlayer()->SetPosition(movementInfo.x, movementInfo.y, movementInfo.z, movementInfo.o);
GetPlayer()->m_movementInfo = movementInfo;
if (GetPlayer()->m_fallMovementInfo.fallTime >= movementInfo.fallTime || GetPlayer()->m_fallMovementInfo.z <=movementInfo.z)
GetPlayer()->m_fallMovementInfo = movementInfo;
if(GetPlayer()->isMovingOrTurning())
GetPlayer()->RemoveSpellsCausingAura(SPELL_AURA_FEIGN_DEATH);

1
src/game/Player.h
View file

@ -1910,6 +1910,7 @@ class MANGOS_DLL_SPEC Player : public Unit
/*** VARIOUS SYSTEMS ***/
/*********************************************************/
MovementInfo m_movementInfo;
MovementInfo m_fallMovementInfo;
bool isMoving() const { return HasUnitMovementFlag(movementFlagsMask); }
bool isMovingOrTurning() const { return HasUnitMovementFlag(movementOrTurningFlagsMask); }

2
src/shared/revision_nr.h
View file

@ -1,4 +1,4 @@
#ifndef __REVISION_NR_H__
#define __REVISION_NR_H__
#define REVISION_NR "6889"
#define REVISION_NR "6890"
#endif // __REVISION_NR_H__