not fully implemented yet. this is a solid start. i have to commit before i break something.
MojangsonParser: Parses strings in Mojangson format (the JSON variant Minecraft uses for commands) and converts them into NBT Tag objects.
PlayerSelector: Implements Minecraft selectors (@p, @a, @r, @e, @s) to filter entities based on criteria.
Supported clauses:
x,y,z - origin coordinates
r,rm - max/min radius (spherical distance)
dx,dy,dz - axis-aligned bounding box
c - number of entities to return
l,lm - player experience level
m - game mode (0=S,1=C,2=A,3=Spec)
name - exact entity name
type - entity type (with ! inversion support)
team - team (placeholder, not implemented)
rx,rxm,ry,rym - rotation (pitch/yaw)
nbt - NBT filter (first level only)
some of them not working yet. or have to be fixed, or misses something to implement.
