Could someone please create a forge mod with these simple requirements:
Add value to the players score every time a player:
mines a block
crafts an item
kills an entity
(or otherwise performs an action)
The value of the score to be added to the players score should reflect the value of the item the action was performed on. IE: mine a dirt block, get 1 point, mine a stone block, get 2 points. For crafting it should be based on the difficulty of the recipe.
Then there should be 2 commands
/score <name> - shows your current score or the score of the player you've optionally named
/score reset <name> <value> - admin command resets the players score to 0 or to the optional value specified
The end result is the more the player does in the world, the higher their score. The more they explore, mine, fight, craft, and the more difficult things they craft, the higher their score.