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Type: Posts; User: Dondrei

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    Aw, crap. I thought that just reserved 30 spaces....

    Aw, crap. I thought that just reserved 30 spaces.

    Hmm. You're right, I was eventually intending on making them local. What should I do when they're local?
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    Hmm, I have a new problem now, I was trying to...

    Hmm, I have a new problem now, I was trying to switch from using a vector of Monsters to using a vector of pointers to the Monsters like matsp suggested, but it doesn't like it. What I had originally...
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    Oh, that makes sense. Why would you want to...

    Oh, that makes sense.

    Why would you want to de-const a const? Doesn't that defeat the purpose?
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    Cool, thanks. What are the other kinds of...

    Cool, thanks.

    What are the other kinds of casts used for? Pointers or something?
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    Am I using casts properly?

    There are some pretty big gaps in my programming knowledge, one of them being casts. I was writing code like this:


    int a, c;
    float b;
    a = 100;
    b = 0.8;
    c = a*b;

    My compiler threw a...
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    Huh, so all those variables I've made ints and...

    Huh, so all those variables I've made ints and all the ones I've made signed ints are actually all the same? Now I feel like a dork. :P



    I see... so why does vector.size() need a specialised...
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    Okay, I think I see the problem, I was thinking...

    Okay, I think I see the problem, I was thinking int was unsigned but apparently it defaults to signed. That threw me. If I put:


    for (unsigned int i=0; i<MonsterList.size(); i++) {}

    It doesn't...
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    Even if I change "int i" to "signed int i" I...

    Even if I change "int i" to "signed int i" I still get comparison of signed and unsigned integer expressions. All the example code I've seen just uses something like:


    for(int i=0;i <...
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    Hmm, now I have an elementary question... I made...

    Hmm, now I have an elementary question... I made a loop for the two drawimage calls:


    for (int i=0; i<=1; i++) {
    drawimage(block, 0, 0, MonsterList.at(i).spritew,...
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    Oh, looks like you all figured it out right after...

    Oh, looks like you all figured it out right after I posted :P

    I'm planning to have different kinds of monsters, but Monster will be the base class, I think all the basic features of the monster...
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    Sorry... I'm a dork, I wasn't thinking clearly....

    Sorry... I'm a dork, I wasn't thinking clearly. The problem is that in my movement code I was still referring to Monster1 and Monster2, I should've changed that to MonsterList.at(0) and...
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    Gah... I think I figured it out. I went to copy...

    Gah... I think I figured it out. I went to copy more code across but then looking at it it occurred to me the monsters were assigned to the vector before I specified their positions. I pasted it just...
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    Vectors of classes

    I have a class Monster for NPCs and so on in the game, and I want to create a vector containing all the currently active monsters. As they die or get spawned I figure I'll pushback or popback them in...
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    Oh right, that makes sense. I was assuming that...

    Oh right, that makes sense. I was assuming that because the logic was being used in the definition of a float, it would assume all the numbers in it were floats too.

    So if I put (9.0/5) for...
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    Unexpected variable behaviour

    I'm still very much a programming newbie, so maybe this all makes perfect sense but it wasn't the behaviour I was expecting. I wrote a Celsius to Fahrenheit converter to show someone the basics of...
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    I think I'll just separate with &&s, probably the...

    I think I'll just separate with &&s, probably the simplest way.



    Ah, that makes sense.
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    Oh, okay. So what does the

    Oh, okay. So what does the <= operator do in that context?
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    Very elementary C++ question

    Okay, this is a bit basic but I'm having a hard time Googling it so what the hey...

    Does C++ accept logic tests like:


    if (a <= x <= y) {}

    Or do I have to keep writing it out as:
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    Yeah, my convention is basically just personal...

    Yeah, my convention is basically just personal aesthetics at the moment, I should probably make it more consistent.

    Heh, thanks for the link, I know exactly the sort of people it was talking...
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    Oh, I already had ==, I just got sloppy copying...

    Oh, I already had ==, I just got sloppy copying the code :P

    Hmm, maybe I should pass Goblin to the function instead, that would make the most sense I think.

    So if I make goblin and hero derived...
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    Basic scope issue

    I'm trying to access a variable in a class from another class:


    class hero (
    public:
    int xpos;
    void Move();
    );

    class monster (
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    Oh, of course, the scope thingy. That's great,...

    Oh, of course, the scope thingy.

    That's great, thanks for your help.
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    Ah, thanks. Hmm, I'm getting some kind of...

    Ah, thanks.

    Hmm, I'm getting some kind of error if I use this.xpos, but if I put this->xpos it seems to work, is "this" actually a pointer?

    Is there a way to change the global variable xpos...
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    Noob question about classes

    If I have a class defined like this:


    class Sprite {
    public:
    int xpos;
    int ypos;
    void move();
    };
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    I don't think so, I'm just hitting Dev-C++'s...

    I don't think so, I'm just hitting Dev-C++'s normal compile & run button. The thing is I'm putting in "include SDL.h" and apparently it references inttypes.h, so that's why I'm getting the error.
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