Fix the spawner and doors problem

Fixed a bug about switching music from combat to exploration when you die.

Fixed a bug about explosive barrels not re-exploding when used a second time from the pool.

Fixed a second bug about explosive barrels not affecting damage to enemies or player when there were two barrels in a row.

Fixed a bug about combat zones and that the doors were locked when you died.

Fixed various bugs with ground collisions and flying flowers/plants.

Fixed zero division bug in "ExecuteTask" of "TPSLaserRepositioning".

Disabled some "SkeletalMeshComponents" in "EnemyBase" to turn them on and off when convenient and save ms: detected in profiling measurements.

Fixed spawn point bug for a special "Shooter" enemy in the last wave of the third level: a new spawn point has been created for that specific enemy and moved upwards.

Fixed spawn point bug for a couple of melee putty enemies in the first wave of the first level: basically, two enemies were spawned at the same spawn point, collided with each other and went up, so now one of those two spawn points has been duplicated and they are no longer spawned at the same spawn point.

Fixed collisions in the final wave area of the first level and the lift area of the last level.

Fixed foliage bugs in level 3 that disappeared when you approached them: now they don't disappear anymore.

Fixed bug where you could enter the first arena on level 3 without starting the fight.

Fixed collision bug that caused the player to fall on the last lift of level 3.

Fixed enemy bugs related to animations that caused enemies to become snotty

Fixed the stomp bug on the laser enemy when it was on a catwalk above the player so that it doesn't endlessly stomp around.

Iterated the navigation mesh in the last combat zone of the first level so that there is more non-navigable space around the railings and the laser enemy doesn't get stuck when walking.

Updated collisions on some minor elements such as railings, banners or lampposts so that the camera doesn't get blocked by them.

Massive collision iteration on all levels... but mainly on level 2 by far.

Fixed enemy spawner bugs that triggered two consecutive rounds or prevented from passing round.

Fixed music round bug when you are in combat and die: it now resets to zero.

Gaps have been plugged to prevent navigation from breaking: related to adding collisions and, in some cases, even some geometry has been added or its wrong sublevel has been changed.

Fixed bug where the wave would not deactivate on enemy spawner when you killed it in midair.

Fixed the shot charged on the spawner enemy when it dies so that the shot doesn't freeze.

Fixed an issue that caused enemy skeleton meshes to appear rotated and displaced after applying ragdoll for the first time when they reappeared in the game world.

Iterations of geometry and collisions in level 2 to fill gaps so that there is no possibility to escape the level, reposition elements in the level that touches, conversion of destructible false destructible to destructible.

Fixed the audio volume of some sound effects at the start of combat zones.