General bugfixing and small features

A bunch of things this week, mainly bug fixing, which I'm not going to focus on, so I'll keep it short.

• Remember that statue pushing last week? Well this time I implemented a proper "creature ability" to push or pull. Character moves with the object. Thankfully that was quite easy to implement.
• At some point I need to start building executables to distribute for testing various bits. Last time I attempted that was several months ago while porting. Tried it again, fixed a bunch of issues (and a few remain), but looks like it's going to be fine.
• Fireball and other AoE damage effects should destroy cobwebs and other such objects.
• Solved a few more issues related to doors! We all know how doors are PITA :) Examples, also specific to my implementation/visuals:
  • if a secret door is opened (by some monster -- should not happen!), reveal it first, otherwise there's a graphical glitch
  • if a door is secret, creatures should not open it (spoils the fun)
  • if a door is locked, creatures should not open it from the other side (players can though)
  • when unlocking a wooden door, the sprite was changed to the metal one. I was missing sprites, but fixed all that
• Swapping is allowed automatically with neutral creatures. Previously you could swap with friendly creatures only, but it was tedious when encountering neutral creatures in corridors that you didn't want to kill. Also I removed the GUI that allowed you to swap or attack, and now you swap automatically. You can still attack creatures with an explicit action.
• A little bit of GUI work. This means just slowly following a tutorial really, but I paused that for bug fixing. Will resume!

More things in the pipeline for next time, so next week's forecast is fonts, attack animation and GUI.