gameplay: make caber damage consistent

since the caber used distance mod, its base damage
was extremely inconsistent and seemingly random,
with a player essentially needing to "aim" this
melee weapons using their eye position.

also set the explosion location to the player's center, so that
the explosion falloff is much more consistent and easier to
land optimally.

we set DMG_NOCLOSEDISTANCEMOD because there are various parts of
the code which adjust the damage when this flag is not present,
without checking if DMG_USEDISTANCEMOD is really applied.

also treat the caber as a grenade in all cases in the code,
for consistency.

finally, add missing charge mini-crit code for the caber and
pain train.

ref: ValveSoftware/Source-1-Games#4428

Author: mastercoms

src/game/server/tf/player_vs_environment/boss_alpha/boss_alpha.cpp

@@ -268,6 +268,7 @@ float ModifyBossDamage( const CTakeDamageInfo &info )
 		case TF_WEAPON_GRENADELAUNCHER:
 		case TF_WEAPON_PIPEBOMBLAUNCHER:
 		case TF_WEAPON_GRENADE_DEMOMAN:
+		case TF_WEAPON_STICKBOMB:
 			return info.GetDamage() * tf_boss_alpha_dmg_mult_grenade.GetFloat();
 
 		case TF_WEAPON_ROCKETLAUNCHER:

src/game/shared/tf/tf_gamerules.cpp

@@ -5848,7 +5848,7 @@ bool CTFGameRules::ApplyOnDamageModifyRules( CTakeDamageInfo &info, CBaseEntity
 					eDamageBonusCond = TF_COND_OFFENSEBUFF;
 				}
 			}
-			else if ( pTFAttacker && (bitsDamage & DMG_RADIUS_MAX) && pWeapon && ( (pWeapon->GetWeaponID() == TF_WEAPON_SWORD) || (pWeapon->GetWeaponID() == TF_WEAPON_BOTTLE)|| (pWeapon->GetWeaponID() == TF_WEAPON_WRENCH) ) )
+			else if ( pTFAttacker && (bitsDamage & DMG_RADIUS_MAX) && pWeapon && ( (pWeapon->GetWeaponID() == TF_WEAPON_SWORD) || (pWeapon->GetWeaponID() == TF_WEAPON_BOTTLE) || (pWeapon->GetWeaponID() == TF_WEAPON_WRENCH) || (pWeapon->GetWeaponID() == TF_WEAPON_STICKBOMB) || (pWeapon->GetWeaponID() == TF_WEAPON_SHOVEL) ) )
 			{
 				// First sword or bottle attack after a charge is a mini-crit.
 				bAllSeeCrit = true;

src/game/shared/tf/tf_weapon_bottle.cpp

@@ -171,8 +171,7 @@ void CTFStickBomb::Smack( void )
 		{
 			Vector vecForward; 
 			AngleVectors( pTFPlayer->EyeAngles(), &vecForward );
-			Vector vecSwingStart = pTFPlayer->Weapon_ShootPosition();
-			Vector vecSwingEnd = vecSwingStart + vecForward * GetSwingRange();
+			Vector vecSwingStart = pTFPlayer->WorldSpaceCenter();
 
 			Vector explosion = vecSwingStart;
 
@@ -192,7 +191,7 @@ void CTFStickBomb::Smack( void )
 
 			TE_TFExplosion( filter, 0.0f, explosion, Vector(0,0,1), TF_WEAPON_GRENADELAUNCHER, pTFPlayer->entindex(), -1, SPECIAL1, iCustomParticleIndex );
 
-			int dmgType = DMG_BLAST | DMG_USEDISTANCEMOD;
+			int dmgType = DMG_BLAST | DMG_NOCLOSEDISTANCEMOD;
 			if ( IsCurrentAttackACrit() )
 				dmgType |= DMG_CRITICAL;