Here's Java-Gaming.org pastebin of my currently managed code.
I have successfully managed to create a simple chase camera. The camera itself is the Canvas. The region of the camera is the region of the Canvas. The camera (Canvas) follows a stationary unit, while other objects move in opposite directions, creating the illusion that the stationary unit is moving and the camera is "chasing" it.
But, a friend of mine points that my simplistic design is a bad design if I were to expand on this. For example, if I were to add lots of objects to my game, I would have to calculate each and every single object. The friend thinks that the Canvas could just follow around the unit itself, while the unit moves around stationary obstacles, making the game more flexible and more easier to code. So I did a rewrite, albeit unsuccessful.
It's like this diagram shown here:
The trouble I'm having is that, due to some technical difficulties, I can only obtain the center position, (x,y), of the Canvas. The map itself is loaded from a binary file, with everything from trees, to guns, to doors, etc. all fully created in the file. If I were to just load the file, my unit (the purple dot in the diagram) would spawn in at the top left corner.
The main problem, thus the question, is how do I map the Canvas's center position onto the purple dot all the time?
The hint I'm getting is that, if I can obtain the unit's position coordinates, then do something I have no clue on, I can then take the results from there, and offset all of the objects. But, wouldn't that defeat the purpose of what my friend is thinking of?
Thanks in advance.