* Comments and newlines in engine.go
* Comments and newlines in object.go
* Comments and newlines in animated_entity.go
* Comments and newlines in missile.go
* Comments and newlines in npc.go
* Comments and newlines in player.go
* Removed object.go (incorrectly merged it in during rebase).
* Comments and newlines in renderer.go.
* Comments and newlines in map_entity.go.
* Comments and newlines in walk_mesh.go.
* Comments and newlines in viewport.go and tile_cache.go.
* Comments and newlines in stamp.go and wilderness_tile_types.go.
* Comments and newlines in everything else.
When clicking on the other side of a wall or in an an inaccessible area,
route the player the closest possible node. This allows running along
walls and matches the original closely.
Co-authored-by: Nicholas Eden <neden@zigzagame.com>
Copied go-astar into d2common/d2astar, made a few optimizations. Runs
roughly 30% faster according to my benchmarking.
Added a `maxCost` param to prevent searching the entire map for a path.
This probably needs tweaked a bit, but follows the original game more
closely.
Co-authored-by: Nicholas Eden <neden@zigzagame.com>
