New tie paradigm

For the C++ version (2.5), all old tie sysvars are thrown out. Here's the comprehensive list of all the new tie commands and sysvars:

Commands

• readtie - If settie is set (ie: not 0) writetie takes 1 value from the stack, representing the memory location to be read from, and places a value on the stack representing the value at that location through the tie. If settie is positive, and points to a phase representing more than one tie, the returned values are averaged for each robot thus pointed to.

.nrg readtie will read the value stored in .nrg from the bot connected through the current tie.

• writetie - If settie is set (ie: not 0) writetie takes 2 values from the stack. 10 .up writetie will place 10 at the location specified (.up) in whichever bots are at the other end of the tie(s) settie addresses.

When settie isn't set, writetie removes an extra value from the stack to represent the tie being pointed to. ie: -1 10 .up writetie to write to tie -1.

If a negative memory location is specified (ie: 10 -1 writetie) substance transfer is initiated. 10 -1 writetie would transfer 10 units of energy from the tie being pointed to. If settie is unset, this vesion also takes an additional value form the stack.

• settie - Sets the current tie that the DNA is looking at. When a new tie is set, all the sysvars update for the new information from that tie. Negative nubmers specify a physical tie in the internal array. Positive numbers specifies a tie phase. Multiple ties can be addressed through a single tie phase.
• nexttie - settie's to the next tie. If settie is currently set to negative (ie: internal arrays) it finds the next tie in the internal array. If the present tie is already at the end, it moves back to the beginning. If the present tie is positive, nexttie finds the next valid tie phase, looping back to the lowest tie phase if it's already at the highest. If settie is unset (ie: set to 0) nexttie pushes it to first internal tie (ie: a negative).