blockat condition for relative block evaluation checks

?blockat condition to evaluate the block material at a location beyond inherited skill context.

For example, a TriggerCondition using blockat{b=STONE;yo=-1} would check the block 1 below the trigger's location, while a TargetCondition of blockat{b=DIRT;yo=1} would check the block one above the inherited target location.

types | type | t | material | mat | m | block | b blockmatcher to check for

x | y | z coordinate inputs, default to 0

relative | r defaults to true, if true evaluates xyz offsets from the evaluating scope. If false, treats x/y/z as absolute coordinates.

targetlocation | location | loc accepts "world,x,y,z" string input for Mythic parity, and location targeters such as @selfLocation{fo=2;so=1}. If set overrides x/y/z and relative attributes.

buried_treasure:
  Conditions:
  - blockat{b=SAND;loc=@self{fo=2}}
  TargetConditions:
  - blockat{b=SANDSTONE;y=-1}
  TriggerConditions:
  - onblock{b=SAND}
  - blockat{b=SAND;y=-2}
  Skills:
  - idk bury treasure here ig