Bullet Code Problems - Cemetech | Forum | Casio Development & Programming [Topic]

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

Bullet Code Problems
22 Apr 2012 06:56:03 pm

Bullet is the name of the game I'm making, but the code is being spo annoying. I can't figure out what's wrong. Help please:

Code:

#include "keyboard.hpp"   


#include "color.h"   


#include "display.h"   


#include "keyboard_syscalls.h"   


#include "PictureData.h"   


#include "stdlib.h"





void CopySprite(const void* datar, int x, int y, int width, int height) {     


   color_t*data = (color_t*) datar;     


   color_t* VRAM = (color_t*)0xA8000000;     


   VRAM += LCD_WIDTH_PX*y + x;     


   for(int j=y; j<y+height; j++) {     


      for(int i=x; i<x+width; i++) {     


         *(VRAM++) = *(data++);     


     }     


     VRAM += LCD_WIDTH_PX-width;     


   }     


}   





void CopySpriteMasked(const void*datar, int x, int y, int width, int height, int maskcolor) { 


   color_t*data = (color_t*) datar; 


   color_t* VRAM = (color_t*)0xA8000000; 


   VRAM += LCD_WIDTH_PX*y + x; 


   for(int j=y; j<y+height; j++) { 


      for(int i=x; i<x+width;  i++) { 


         if (*(data) != maskcolor) { 


            *(VRAM++) = *(data++); 


         } else { VRAM++; data++; } 


      } 


      VRAM += LCD_WIDTH_PX-width; 


   } 


}








int PRGM_GetKey(){     


  unsigned char buffer[12];     


  PRGM_GetKey_OS( buffer );     


  return ( buffer[1] & 0x0F ) * 10 + ( ( buffer[2] & 0xF0 ) >> 4 );     


}   











struct Coord {   








   int x;   








   int y;   








};   





int keydown(int basic_keycode)    


{    


   const unsigned short* keyboard_register = (unsigned short*)0xA44B0000;    


   int row, col, word, bit;    


   row = basic_keycode%10;    


   col = basic_keycode/10-1;    


   word = row>>1;    


   bit = col + 8*(row&1);    


   return (0 != (keyboard_register[word] & 1<<bit));    


}   





void moveCursor(struct Coord* cursor) {       


   if( keydown(KEY_PRGM_LEFT) && cursor->x>45) cursor->x-=8;    


   if( keydown(KEY_PRGM_RIGHT) && cursor->x<302) cursor->x+=8;    


}   











int main() {     


  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) {


while(1) {     


  struct Coord cur;    


  cur.x = 128;    


  int w = rand()%(340-45+1) + 45;


  int b = rand()%(340-45+1) + 45;


  int j = 0;


  int s = 0;


    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, w, j, 75, 80, COLOR_RED);


    CopySpriteMasked(LSDOMG, b, j, 34, 34, COLOR_RED);


    if(w == cur.x && j == 159)


    break;


    if(b == cur.x && j == 159)


    s++;


    j+=8;


    if(j >= 216) {


  j = 0;


  w = rand()%(340-45+1) + 45;


  b = rand()%(340-45+1) + 45;


}


    if(keydown(KEY_PRGM_EXIT))


    break;


    Bdisp_PutDisp_DD();     


    Bdisp_AllCr_VRAM();


  }     }


    if(keydown(KEY_PRGM_SHIFT) && y == 145) {


while(1) {


    CopySprite(Instructions, 0, 0, 384, 216);


    if(keydown(KEY_PRGM_EXIT))


    break;


    Bdisp_PutDisp_DD();     


    Bdisp_AllCr_VRAM();


}


  return 0;


}


    Bdisp_PutDisp_DD();     


    Bdisp_AllCr_VRAM();





}





  return 0;     


}

Help fix it. PLEASE!

souvik1997
2
Guru-in-Training (Posts: 2867)

22 Apr 2012 06:57:41 pm

What's happening with your code? We can't just magically fix it if you don't tell us what's wrong.

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

22 Apr 2012 07:00:03 pm

When I put it on my Prizm, the Banana/LSDOMG sprites jerk around the top of the screen. Even though it is supposed to make them scroll to the bottom of the screen and regenerate somewhere else at the top.

Edit:

Here is the g3a file. Enjoy.....

http://www.mediafire.com/?79bchn1nyyfcyv2

souvik1997
2
Guru-in-Training (Posts: 2867)

22 Apr 2012 07:08:19 pm

Quote:

int w = rand()%(340-45+1) + 45;
int b = rand()%(340-45+1) + 45;
int j = 0;
int s = 0;
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, w, j, 75, 80, COLOR_RED);
CopySpriteMasked(LSDOMG, b, j, 34, 34, COLOR_RED);

You're setting the coordinates for the sprites every time the loop repeats. Set the variables outside the loop.

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

22 Apr 2012 07:15:50 pm

Now how will I make it detect if the banana or coin(LSDOMG) hits it or not?.........

souvik1997
2
Guru-in-Training (Posts: 2867)

22 Apr 2012 07:17:29 pm

Spenceboy98 wrote:

Now how will I make it detect if the banana or coin(LSDOMG) hits it or not?.........

Umm..

Code:

if(w == cur.x && j == 159) 


    break; 


    if(b == cur.x && j == 159) 


    s++;

You already have code to detect if it hit the cursor.

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

22 Apr 2012 07:21:10 pm

Yes, but it only detects when it is exactly the same coordinates.

Ashbad
1
Guru-in-Training (Posts: 2497)

22 Apr 2012 07:22:23 pm

Spenceboy98 wrote:

Yes, but it only detects when it is exactly the same coordinates.

Seems you're going to need to check if it's in a box of a certain size, using position offsets and the >, <, >=, <= operators instead of the == operator.

_player1537
Guru-in-Training (Posts: 2983)

22 Apr 2012 07:24:28 pm

Or you could use the absolute value trick. Such as: if (abs(bulletX - playerX) <= 10) { /* within 10 pixels on either side */ }.

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

23 Apr 2012 06:17:20 pm

_player1537 wrote:

Or you could use the absolute value trick. Such as: if (abs(bulletX - playerX) <= 10) { /* within 10 pixels on either side */ }.

Now it says

Code:

main.c:99:5: warning: implicit declaration of function 'abs' [-Wimplicit-functio


n-declaration]

Now what?

Ashbad
1
Guru-in-Training (Posts: 2497)

23 Apr 2012 06:19:37 pm

you need to define abs.

Code:

inline int abs(int a) { return (a < 0) ? (-a) : (a); }

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

23 Apr 2012 06:26:32 pm

Now, whenever you are underneath the bullet coming toward you, it exits anyways. No matter how far away from it you are.

KermMartian
Site Admin (Posts: 64173)

24 Apr 2012 12:57:48 pm

Ashbad wrote:

you need to define abs.

Code:

inline int abs(int a) { return (a < 0) ? (-a) : (a); }

There's a better way to do this:

Code:

#define abs(a) ((a) < 0 ? (-(a)):(a))

This will work for any numeric data type. Smile

Spence: Then you didn't use it correctly. You should check when the absolute difference in X is less than or equal to (some distance), and the difference is Y is also less than or equal to (some distance). Maybe you aren't properly cancelling the bullet?

blue_bear_94
Member (Posts: 164)

24 Apr 2012 05:00:17 pm

I think the abs( function was already defined in stdlib.h.

Ashbad
1
Guru-in-Training (Posts: 2497)

24 Apr 2012 05:01:16 pm

blue_bear_94 wrote:

I think the abs( function was already defined in stdlib.h.

Unfortunately, the PrizmSDK's C standard library is far from being completely filled in; abs() isn't defined there officially yet.

merthsoft
1
im shaun (Posts: 3885)

24 Apr 2012 05:02:01 pm

KermMartian wrote:

Ashbad wrote:

you need to define abs.

Code:

inline int abs(int a) { return (a < 0) ? (-a) : (a); }

There's a better way to do this:

Code:

#define abs(a) ((a) < 0 ? (-(a)):(a))

This will work for any numeric data type. Smile

And breaks for abs(someFuncThatReturnsAValue()) and abs(x++), right? I remember benryves and Catherine talking about this last night. In any case, I prefer functions to macros. Macros feel dirty.

Tari
3
Systems Wrangler (Posts: 3541)

24 Apr 2012 05:26:51 pm

Ashbad wrote:

blue_bear_94 wrote:

I think the abs( function was already defined in stdlib.h.

Unfortunately, the PrizmSDK's C standard library is far from being completely filled in; abs() isn't defined there officially yet.

You're both wrong. abs() is a GCC builtin (unless you force strict adherence to the standard), but nothing included the prototype, hence the warning-- note that was not an error, but a warning.

Code:

int abs(int);

will do the trick until somebody bothers putting them in the headers.

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

28 Apr 2012 03:12:48 pm

I'm guessing that it is too big to compile:

Code:

/prizmsdk-0.3/prizmsdk-0.3/bin/../lib/gcc/sh3eb-elf/4.6.0/../../../../sh3eb-


elf/bin/ld.exe: region `rom' overflowed by 159776 bytes


collect2: ld returned 1 exit status


make: *** [Bullet.bin] Error 1

Ashbad
1
Guru-in-Training (Posts: 2497)

28 Apr 2012 03:16:29 pm

Spenceboy98 wrote:

I'm guessing that it is too big to compile:

Code:

/prizmsdk-0.3/prizmsdk-0.3/bin/../lib/gcc/sh3eb-elf/4.6.0/../../../../sh3eb-


elf/bin/ld.exe: region `rom' overflowed by 159776 bytes


collect2: ld returned 1 exit status


make: *** [Bullet.bin] Error 1

What did you stick in it, 3 screen-sized textures? If you want to make it bigger, change your "rom: l=500K" (or something like that) in Prizm.ld in the "common" folder of the SDK to "l=1250K", which is a safe number.

Spenceboy98
1
Minor Calculator Deity (Posts: 1060)

30 Apr 2012 09:05:43 pm

It doesn't display the pic at the end. Here's code:

Code:

int main() {     


  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) {


  struct Coord cur;    


  cur.x = 128;    


  cur.y = 159;


  int w = rand()%(265-45+1) + 45;


  int b = rand()%(306-45+1) + 45;


  int j = -80;


  int m = -34;


  int s = 0;


  int t = 0;


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, cur.y, 38, 43, COLOR_RED);


    CopySpriteMasked(Banana, w, j, 75, 80, COLOR_RED);


    CopySpriteMasked(LSDOMG, b, m, 34, 34, COLOR_RED);


    if ((cur.x >= w+10 && cur.x <= w+59) && (cur.y >= j+15 && cur.y <= j+71))


    break;


    if ((cur.x >= b+4 && cur.x <= b+30) && (cur.y >= m+4 && cur.y <= m+30)) {


    s++;


    m = -34;


    b = rand()%(340-45+1) + 45;}


    j+=8;


    m+=8;


    if(j > 216) {


  j = -80;


  w = rand()%(340-45+1) + 45; }


    if(m > 216) {


    m = -34;


    b = rand()%(340-45+1) + 45;}


    if(keydown(KEY_PRGM_EXIT))


    break;


    t++;


    if(t >= 1000){


    CopySprite(BulletPerson, 0, 0, 384, 216);


    break;}


    Bdisp_PutDisp_DD();     


    Bdisp_AllCr_VRAM();


  }     }


    if(keydown(KEY_PRGM_SHIFT) && y == 145) {


while(1) {


    CopySprite(Instructions, 0, 0, 384, 216);


    if(keydown(KEY_PRGM_EXIT))


    break;


    Bdisp_PutDisp_DD();     


    Bdisp_AllCr_VRAM();


}





}


    Bdisp_PutDisp_DD();     


    Bdisp_AllCr_VRAM();





}





  return 0;     


}