Tile Direction Deltas

[crhallberg]

This is the culmination of what we were discussing over in issue #10.

I've been seeing a position problem related to turning, where the calculated vectors in the program don't match up with what actually happens with the game. After combing through the OpenRCT2 code, I found this tasty bit that adjusts the arrow when the orientation changes. This solves the issue, as illustrated below.

The green arrows is the width of the element, the cyan is the tile direction adjustment.

The tests that were skipped that you pointed out were testing the deprecated Advance function, so I adjusted the turn test for the values I'm seeing in the game and then made them pass.

Look forward to talking this over!

Resolves #10.

[crhallberg]

Any ideas why the genetic algorithm test would be failing? Hacktoberfest is coming!

[crhallberg]

Update: Discovered that this broke the track completing code.

PS: Happy Hacktoberfest!

[crhallberg]

So, I was uneasy editing the trackTests data in rct2_test.go, since they no longer worked with the new tile deltas. I didn't want to edit the tests to match broken code, so I did a little building in RCT2.

For example, this is the setup for the test that wants the completer to make two sharp left turns into home. To my relief, the cursor is at {-1, 3} (the new value), not {0, 3} (the old value).

This, on top of the fact that all tests not involving turns still passed made me feel I was doing the correct edits.