Events description:
There are multiple events and they can be added between objectives.
So when there is like a objective 1 and objective 2 and you add a event between them.
Then after you finish task 1 it start the event and there can be multiple events.
So it could be something go to xx location and then a event that spawn monsters.
And then the player get a objective to kill the monsters.
All events are listed below. Also all effects have a delay this means time before it start.

events:

SpawnMob:
This will spawn xx amount of mobs of xx type.
If possible make it so health can be more then 20 for boss mobs
Parameters:
ID -> what mob to spawn?
amount -> the amount of mobs to spawn.
health: -> The health of the mob to make them stronger or weaker.
nearplayer -> Spawn near the player
Radius -> Radius around the player the monters can spawn.
Coordinates -> Spawn on xx coordinates.

Explosion:
This will create a explosion.
Need to be configurable if it does damage and the size etc
Parameters:
size -> the size of the explosion.
blockdamage -> does the explosion do block damage?
playerdamage -> does the explosion do player/entity damage?
fire -> does the explosion create fire?
nearplayer -> create near the player
Radius -> Radius around the player the effect will happen.
Coordinates -> create on xx coordinates.

BlockPlace:
This will create a block at location.
Parameters:
ID -> Block data value
coordinates -> Location where the block will create
Smokeeffect -> Create smoke effect when block is placed?

BlockBreak:
This will place a block at location
Parameters:
ID -> Block data value
coordinates -> Location where the block will break
Smokeeffect -> Create smoke effect where the block is broken?
blockbreakeffect -> Play a block breaking effect of the block ID

Lightning:
This will strike down lightning at a location or near the player.
Parameters:
nearplayer -> Does it strike down lightning near the player?
radius -> Radius around the player where the lightning will strike down
coordinates -> Location where the lightning will strike down.
Playerdamage -> Does the lighting do player damage?
Explosion -> Will there be a small explosion where the lighting comes down?

Arrow:
This will shoot a arrow from xx location in direction of xx location
Should always player the arrow shoot effect
Parameters:
start location -> Where does the arrow start?
target -> where does the arrow go? a second coordinate
arrow damage -> amoutn of damage the arrow does
amount -> amount of arrows to shoot
delay -> Delay between arrows in ticks

Potion:
This will give the player a potion effect
Should always play the potion splash sound and effect of the same potion id
Parameters:
PotionID -> ID of the potion to give the player
Strength -> The power of the potion.
Length -> The time the player get the potion effect

Teleport:
This will teleport a player to coordinates.
Should add a visual effect on start location and target location of EnderSignal.
Parameters:
Location -> coordinates where to tp the player to.