For some reason, I can't find how to input strings in C. How do I do so?
Spenceboy98 wrote:
For some reason, I can't find how to input strings in C. How do I do so?
C on the Prizm, I assume you mean to say specifically? If so, look at Kerm's routine, and if that doesn't cut it perhaps try working up from the more basic *MBString syscalls?
Spenceboy98 wrote:
So, the MBString lets you input text where you want on the screen?
No, it displays it with some customization on where to show the start of the string, where to put the cursor, etc. You'd have to write the actual input code on top of that. If you want something that can be used as-is, use Kerm's routine.
So, I can just copy and paste Kerms code into mine? Wouldn't it input somewhere at the top of the screen? Also, is there a Lbl type function? I can't find one of those either.
Spenceboy98 wrote:
So, I can just copy and paste Kerms code into mine? Wouldn't it input somewhere at the top of the screen? Also, is there a Lbl type function? I can't find one of those either.
Yes, put the function somewhere near the bottom of your source code, and prototype it near the top. Read the description to see how it works. And finally, "Lbl" function? What do you mean?
Spenceboy98 wrote:
I mean, is there a function similar to "Lbl" in TI-Basic and/or "Goto"?
Yes, and while it has it's admitted uses, for the most part you're going to want to use if/else/while/for/etc. control structures.
Spenceboy98 wrote:
Ashbad, how did you get the main character in Raptor to move so swiftly and smoothly?
It moves by 8 pixels at a time, plus the whole thing is optimized to blit as little as possible onto the screen at a time. Everything is drawn in about half the time it takes to render a full background from a picture.
Some Code:
Code:
It keeps saying,
Code:
Code:
int main() {
MENU:
int y = 129;
while(1) {
int key = PRGM_GetKey();
if(key == KEY_PRGM_MENU) { GetKey(&key); }
CopySprite(BulletMenu, 0, 0, 384, 216);
CopySpriteMasked(BulletMenuSelector, 7, y, 18, 16, COLOR_RED);
if(keydown(KEY_PRGM_UP) && y>129)
y-=16;
if(keydown(KEY_PRGM_DOWN) && y<145)
y+=16;
if(keydown(KEY_PRGM_SHIFT) && y == 129)
break;
if(keydown(KEY_PRGM_SHIFT) && y == 145)
goto PIZZA;
Bdisp_PutDisp_DD();
Bdisp_AllCr_VRAM();
}
struct Coord cur;
cur.x = 128;
while(1) {
int key = PRGM_GetKey();
if(key == KEY_PRGM_MENU) { GetKey(&key); }
moveCursor(&cur);
CopySprite(BulletBackground, 0, 0, 384, 216);
CopySpriteMasked(SpenBullet, cur.x, 159, 38, 43, COLOR_RED);
CopySpriteMasked(Banana, 0, 0, 75, 80, COLOR_RED);
CopySpriteMasked(LSDOMG, 77, 0, 34, 34, COLOR_RED);
Bdisp_PutDisp_DD();
Bdisp_AllCr_VRAM();
}
PIZZA:
while(1) {
CopySprite(Instructions, 0, 0, 384, 216);
if(keydown(KEY_PRGM_EXIT))
goto MENU;
Bdisp_PutDisp_DD();
Bdisp_AllCr_VRAM();
}
return 0;
}It keeps saying,
Code:
main.c:72:3: error: a label can only be part of a statement and a declaration is
not a statement
A label must be just before an instruction (and the line "int y = 129;" is not an instruction).
BTW, it is strongly discouraged to use goto in C. It's ugly and you can easily make anything without.
BTW, it is strongly discouraged to use goto in C. It's ugly and you can easily make anything without.
http://www.cplusplus.com/reference/clibrary/cstdlib/srand/
To initialize the generator, you have to call RTC_GetTicks() instead of time(NULL)
(RTC_GetTicks is the syscall 0x02C1)
To initialize the generator, you have to call RTC_GetTicks() instead of time(NULL)
(RTC_GetTicks is the syscall 0x02C1)
PierrotLL wrote:
A label must be just before an instruction (and the line "int y = 129;" is not an instruction).
BTW, it is strongly discouraged to use goto in C. It's ugly and you can easily make anything without.
BTW, it is strongly discouraged to use goto in C. It's ugly and you can easily make anything without.
Amen, int spaghetti code=mess.
Try to use function as much as possible, in my C programming book it highly persuades you from using Labels/Gotos
Spenceboy98 wrote:
How do I reset variables to a new value?
Code:
int i = 0;
...
i = 1; // magic.. *snort snort*Please take my earlier suggestion of reading a C tutorial
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