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XMark
Guitar playin' black mage
Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada
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 Posted: Thu Nov 06, 2003 8:16 am Post subject: |
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heh, actually I'm going to stick with the ol' tile engine. I just had a bad day, got a little confused and fell into the old "start everything over again" trap.
Anyway, I figured out how to get it working in Dev-C++. Now I just have one problem. The map file loading thing doesn't seem to be working anymore. Here's my mapfile loading code (half of it, the other half goes through the map entities, loading them one by one and putting them in a vector)
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ifstream loadmap(filenamecopy, ios::in | ios::binary);
loadmap.read(mapname, 16);
loadmap.read(scriptfile, 16);
loadmap.read(tilefile, 16);
loadmap.read(backimg, 16);
loadmap.read(map1, 16384);
loadmap.read(map2, 16384);
loadmap.read(collision, 16384);
int tempsize;
loadmap.read(&tempsize, 4);
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map1, map2, and collision are arrays of unsigned chars
and for those three I get this error message:
| Code: | | invalid conversion from 'unsigned char*' to 'char *' |
and for the loadmap.read(&tempsize, 4) I get this message
| Code: | | no matching function for call to `std::basic_ifstream<char, |
It's weird, it's like all of a sudden the read function can't handle anything except chars.
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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XMark
Guitar playin' black mage
Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada
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| Posted: Thu Nov 06, 2003 8:49 am Post subject: |
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blarg. Seems 9 times out of 10, I figure out the answers to my questions about 15 minutes after posting them. All I had to do was type cast with some handy-dandy (char *)'s :)
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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valderman
Mage
Joined: 29 Aug 2002
Posts: 334
Location: Gothenburg, Sweden
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| Posted: Thu Nov 06, 2003 9:01 am Post subject: |
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| XMark wrote: | | blarg. Seems 9 times out of 10, I figure out the answers to my questions about 15 minutes after posting them. All I had to do was type cast with some handy-dandy (char *)'s :) |
It took you 15 minutes to realize that? o_O
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Adam
Mage
Joined: 30 Dec 2002
Posts: 416
Location: Australia
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| Posted: Thu Nov 06, 2003 9:02 am Post subject: |
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pfft
and that was the first C++ question i had the answer to
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Mandrake
elementry school minded asshole
Joined: 28 May 2002
Posts: 1341
Location: GNARR!
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| Posted: Thu Nov 06, 2003 2:28 pm Post subject: |
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were you able to get Lua to compile? If not, I think the standard windows precompiled .dll windows pkg should work fine for 4.0, but 5.0 i think it's a source only release (i could be wrong).
If you still can't find them, maybe somebody here could send them to ya.
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Xmark
http://pauljessup.com
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syn9
Wandering Minstrel
Joined: 31 Aug 2002
Posts: 120
Location: USA
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XMark
Guitar playin' black mage
Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada
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| Posted: Fri Nov 07, 2003 11:44 pm Post subject: |
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heh, actually now that my original source is working, I have my own homegrown scripting language that I'm using, so I don't need Lua anymore :)
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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XMark
Guitar playin' black mage
Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada
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| Posted: Sat Nov 08, 2003 8:02 am Post subject: |
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Okay, I'm having another major problem right now. It's in my scripting engine. Specifically the problem is with adding variables to my scripting engine. What I have is an object called Scriptint which is held in a vector.
| Code: |
class Scriptint
{
public:
Scriptint();
~Scriptint();
char name[40];
int value;
};
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And here's the part of the scripting code which reads a line such as
int myvariable 32
and places the integer value into the variable vector
| Code: |
case ST_NEWINT:
foundint = 0;
for (x = 0; x < scriptints.size(); x++) {
if (!strcmp(scriptints[x].name, curword))
foundint = 1;
}
strcpy (tempint.name, curword);
grabword(); // grabs the next word in the script into curword
tempint.value = atoi(curword);
if (!foundint)
scriptints.push_back(tempint);
state = ST_ACTIVE;
nodelay = 0;
break;
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Now, the problem is with my scriptints vector. The program compiles perfectly with no errors or warnings, but when I run it, it crashes whenever I even touch the vector. By commenting and uncommenting code I narrowed it down and these following things cause the game to lock up/crash:
attempting to push_back into the vector
using either strcmp or strcpy on name
the FOR loop using scriptints.size()
although tempint.value = atoi(curword) seems to work fine for some reason. Any idea what I could possibly be doing wrong here?
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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Rainer Deyke
Demon Hunter
Joined: 05 Jun 2002
Posts: 672
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| Posted: Sat Nov 08, 2003 5:31 pm Post subject: |
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This may not have anything to do with your problem, but why do you use character arrays as strings? Using std::string is both easier and safer.
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valderman
Mage
Joined: 29 Aug 2002
Posts: 334
Location: Gothenburg, Sweden
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| Posted: Sat Nov 08, 2003 5:58 pm Post subject: |
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I would recommend against interpreting the scripts from raw text at runtime. Better to compile them into bytecode, either when the script is done, or at loadtime.
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XMark
Guitar playin' black mage
Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada
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| Posted: Sat Nov 08, 2003 7:43 pm Post subject: |
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well, the problem has nothing to do with interpreting the raw text and I'm not sure how to do the bytecode thing.
Just humor me here, guys, any idea what might be causing these crashes?
EDIT:
I just did a little test, and even when the name thing is completely removed and it only does anything with the value, I still get the crash. (illegal operation) It's like the program really doesn't want me to use vectors in my scripting code. Which is strange because all my other vectors in the code work perfectly. Just this one is screwing up.
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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DrunkenCoder
Demon Hunter
Joined: 29 May 2002
Posts: 559
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| Posted: Sat Nov 08, 2003 9:14 pm Post subject: |
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hmm.. maybe you should be glad that it crashes so you have the option to use the correct data structure for that...
If your not going to compile it into something at least have a look at std::map instead.
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Bjorn
Demon Hunter
Joined: 29 May 2002
Posts: 1425
Location: Germany
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| Posted: Sun Nov 09, 2003 9:05 pm Post subject: |
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I have a solution, you could try Lua. It's an extensible scripting language suitable for many kinds of application. If you use Lua, you won't have to write your own interpreter, it'll be much easier and you'll have dynamic typing, tables (that can behave like lists, arrays, hash tables, objects, modules, etc.), garbage collector, nice error messages for syntax and runtime errors, fast execution, and much more. ;-)
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XMark
Guitar playin' black mage
Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada
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| Posted: Sat Nov 29, 2003 2:32 am Post subject: |
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Yes! I finally figured out what the problem was. It had nothing to do with the code, it was entirely a compiler problem. When I deleted all the .o files and compiled the whole program, everything worked really easy-like. I guess the compiler was probably putting the vector in an already-used section of memory or something.
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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LeoDraco
Demon Hunter
Joined: 24 Jun 2003
Posts: 584
Location: Riverside, South Cali
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| Posted: Sat Nov 29, 2003 3:33 am Post subject: |
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| Valderman wrote: | | I would recommend against interpreting the scripts from raw text at runtime. Better to compile them into bytecode, either when the script is done, or at loadtime. |
That's complete and utter FUD bullshit. There is nothing wrong with run-time interpretation of raw text.
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