[WIP] AdventureMapHelper

Hey everyone!
I'm making a plugin to help admins create advanced adventure maps, with seamless teleportation, triggers, and scripts.

Basically, the main feature is a small scripting language, allowing to change blocks, do basic loops, conditions and calculations with variables, connected with in-game triggers (commands, player entering a zone, etc...).

An example of such a script is :

Code:

for (i, 0, 10) {  // For the variable i (declared here if it doesn't exist  already) with the values from 0 to 10 included
  changeBlock (12, 50 + i, -36, #AIR); // Change the block at the coordinates to air
  if (i > 5) {
    changeBlock (12, 50 + i, -37, #WOOD:2); // Change the block to birch wood
  }
  else {
    changeBlock (12, 50 + i, -37, 17:3); // Change the block to jungle wood
  }
}
getNearestPlayer ().teleportR (10, 2, 3);
/* Teleport the player to a position relative to his (i.e. player.getX() + 10, player.getY() + 2, etc...),
in order to allow for seamless teleport (he won't notice he teleported), keeping the yaw, pitch, and decimal coordinates. */

For now I'd like some suggestions/comments on the syntax and the methods I could implement.