Thursday, 27 February 2014

Bump to open door option

The problem with this one was that I was using direct enum values for collision types. A central routine in World class returns this collision type, but when you bumped on closed door it returned hitWall (simply because specific hit on closed door was not needed earlier). This kind of programming has the side effect that if you add something new it will probably make things go bananas elsewhere. The new in this case was hitClosed_Door.

As you may already guess the datatype class and public interface came to the rescue. It took some time to convert all (well, most of them, but it's a different story) direct references to hit...-enums to datatype class, but it was worth the effort. Now there are specific routines such as Is_Hard_Obstacle() and Is_Air() etc. These contain all the collision types and as new types are added no checks are needed through the source code for them to work.

Bump to door -option required this change, but there will be also bump check for things you can read. It will only require a new hit type when hitting a readable object and couple of lines of code to call the read function from the player's collision check routine. The new hit type will not confuse other things like pathfinding for monsters. This is the power of datatype classes.

Monday, 24 February 2014

Functional adventure

My month off was reduced to about ten days, but there was no reason to continue this odd vacation from roguelike development so I've been working on Teemu again.

I tried to study something about functional languages, namely Haskell. I learned only that purely functional languages don't use state (aka mutable variables, or commonly known as variables). While this information didn't help me understand functional languages it actually gave me an idea for my data-driven type classes which I guess helps keep them more modular. The idea is to pass parameters to functions rather than pollute the class with external references or write the code itself elsewhere (using that classes information). Those parameters can even be reduced to flag (bool) type information, not the actual variable or object.

Wednesday, 12 February 2014

Month off

When I was planning my 7DRL I realized that in fact I need some time off from roguelikes and programming. I think a month will be fine. I also try not to visit roguetemple's forum or any other roguelike-related place.

I'm not going to sit still, there are many things to do which don't get as much effort as I want. Well to be honest I'm in some kind of crisis... maybe it's this age issue and... stuff.

The big question is can I stay month off?