throw bone

throw bone

a b

Member #8,092

December 2006

How can I see number with using library Allegro ?
I have got code in c++ but I don't know how can I see it using allegro?

int eye;
srand (time(0));
eye = 1+rand()%6;
cout<<eye;

Jonatan Hedborg

Member #4,886

July 2004

I think this is a good place for a "RTFM". I suggest looking under "text output".

a b

Member #8,092

December 2006

text output<<eye it doesn't run

TotalControl

Member #8,078

December 2006

You could use something like:
textprintf_ex(screen, font, 100, 100, makecol(255, 255, 255), -1, "Number: %i", eye);

Archon

Member #4,195

January 2004

Don't use iostream anyway ( << and >> and cout and cin), instead, use stdio (printf("hello"); )

But in Allegro, use textprintf_ex

a b

Member #8,092

December 2006

OH noooo !!!

this is similar to language c but this is not similar to language c ++ - why ?

Jonatan Hedborg

Member #4,886

July 2004

What does that even mean?

Allegro is a C library.

Archon

Member #4,195

January 2004

Quote:

this is similar to language c but this is not similar to language c ++ - why ?

Because iostream style stinks, and I use C++.

a b

Member #8,092

December 2006

So I have to use language C and I can not use c ++ ? So I will not can use classes, heirdom etc. It is so sad........

Archon

Member #4,195

January 2004

C++ is backwards compatible with C.

GullRaDriel

Member #3,861

September 2003

a b, you really need to go watch what is C and what is C++, after what go back to allegro library.

Tons of people here use allegro with C++ or C.

You can use all C functions in a C++ program.

What ? hahem ! Weird...

"Code is like shit - it only smells if it is not yours"
Allegro Wiki, full of examples and articles !!

a b

Member #8,092

December 2006

I know c++ very well but library allegro is strange

Jonatan Hedborg

Member #4,886

July 2004

Has the definition of "very well" changed since i last checked?

a b

Member #8,092

December 2006

Why can't I use cin and cout with using library allegro - it is strange ?

Archon

Member #4,195

January 2004

Quote:

Why can't I use cin and cout with using library allegro - it is strange ?

Those are for the CONSOLE and not for the Allegro window.

Fladimir da Gorf

Member #1,565

October 2001

You can, but they output to the console, not to the main window.

OpenLayer has reached a random SVN version number ;) | Online manual | Installation video!| MSVC projects now possible with cmake | Now alvailable as a Dev-C++ Devpack! (Thanks to Kotori)

a b

Member #8,092

December 2006

thanks you

GullRaDriel

Member #3,861

September 2003

a b-corrected- said:

I know how to ask very well but my knowledge about programming is strange

Do not take it hard, I am just joking

"Code is like shit - it only smells if it is not yours"
Allegro Wiki, full of examples and articles !!

a b

Member #8,092

December 2006

My english isn't so good.

Could you say me what is wrong :

I have got table of size= 11. I am on field number 6, automically throw bone for example 4 and press l (left) so I am on field number 2, automically throw bone for example 3 and press l (left) so I am on field number 10, automically throw bone for example 4 and press r (right) so I am on field number 3 - my code in c++ is good but programm print very unattractively text - so what is vrong ??:

1#include<iostream>
2#include<ctime>
3#include <allegro.h>
4using namespace std;
5 
6int main()
7{
8BITMAP *plan = NULL;
9BITMAP *pawn = NULL;
10 
11allegro_init();
12install_keyboard();
13set_color_depth(32); //32-bitowa glebia kolorow
14set_gfx_mode(GFX_AUTODETECT,1280,1024,0,0);
15set_palette(default_palette);
16clear_to_color(screen,15); //wyczyszczenie struktury bitmap i zamalowanie jej danym kolorem
17 
18 
19plan = load_bitmap("plan.bmp",default_palette);
20pawn = load_bitmap("pawn.bmp",default_palette);
21 
22 
23 
24blit(plan,screen,0,0,0,0,plan->w,plan->h);
25blit(pawn,screen,0,0,0,0,pawn->w,pawn->h);
26 
27textout_ex(screen,font,"You are starting from field number 6",10,740,2,-1);
28textout_ex(screen,font,"ESC - The end of program",10,990,2,-1);
29 
30 
31 
32 
33 int tab[11]={1,2,3,4,5,6,7,8,9,10,11};
34    int *index=&tab[5];
35    int *start=&tab[0];
36    int *end=&tab[10];
37int eye;
38srand (time(0));
39 
40 
41 
42 
43 while(!key[KEY_ESC]) //program bedzie dzialac dopoki nie wcisne ESC
44{
45 
46eye = 1+rand()%6;
47textprintf_ex(screen, font, 10, 820, makecol(0, 0, 0), -1, "You throw number: %d", eye);
48textout_ex(screen,font,"r Go on right, l Go on left",10,840,2,-1);
49readkey();
50if (key[KEY_L])
51    {
52               if ((index-eye)>=start)
53               {
54               index=index-eye;
55               textprintf_ex(screen, font, 10, 860, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
56               
57               }
58               else
59               {               
60               index=end-(eye-*index);
61               textprintf_ex(screen, font, 10, 860, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
62               }
63               
64    }
65    
66    else if (key[KEY_R])
67    {
68         
69               if ((index+eye)<=end)
70               {
71               index=index+eye;
72               textprintf_ex(screen, font, 10, 860, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
73               }
74               else
75               {               
76               index=start+(eye-(*end-*index))-1;
77              textprintf_ex(screen, font, 10, 860, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
78               }
79    }
80 
81 
82 
83}
84 
85destroy_bitmap(plan);
86destroy_bitmap(pawn);
87 
88allegro_exit();
89return 0;
90 
91 
92 
93}
94END_OF_MAIN()

m c

Member #5,337

December 2004

maybe this is (just a little bit) better?

1#include<iostream>
2#include<ctime>
3#include <allegro.h>
4using namespace std;
5 
6inline void update_eye(int *eye, BITMAP *backbuffer)
7{
8  *eye = 1+rand()%6;
9  printf("%d\n",*eye);
10  textprintf_ex(backbuffer, font, 10, 320, makecol(0, 0, 0), -1, "You throw number: %d", *eye);
11  textout_ex(backbuffer,font,"r Go on right, l Go on left",10,340,2,-1);
12  
13  return;
14}
15 
16int main()
17{
18BITMAP *plan = NULL;
19BITMAP *pawn = NULL;
20BITMAP *backbuffer = NULL;
21allegro_init();
22install_keyboard();
23set_color_depth(32); //32-bitowa glebia kolorow
24set_gfx_mode(GFX_AUTODETECT_WINDOWED,800,600,0,0);
25clear_to_color(screen,makecol(255,255,255)); //wyczyszczenie struktury bitmap i zamalowanie jej danym kolorem
26 
27backbuffer=create_bitmap(SCREEN_W,SCREEN_H);
28if(NULL==backbuffer)
29{
30  exit(1); //not enough computer memory  
31}
32 
33 
34clear_to_color(backbuffer,makecol(255,255,255));
35 
36plan = load_bitmap("plan.bmp",NULL);
37pawn = load_bitmap("pawn.bmp",NULL);
38 
39 
40 
41blit(plan,backbuffer,0,0,0,0,plan->w,plan->h);
42blit(pawn,backbuffer,0,0,0,0,pawn->w,pawn->h);
43 
44textout_ex(backbuffer,font,"You are starting from field number 6",10,250,2,-1);
45textout_ex(backbuffer,font,"ESC - The end of program",10,490,2,-1);
46 
47 
48 
49 
50 int tab[11]={1,2,3,4,5,6,7,8,9,10,11};
51    int *index=&tab[5];
52    int *start=&tab[0];
53    int *end=&tab[10];
54int eye;
55srand (time(0));
56update_eye(&eye,backbuffer);
57blit(backbuffer,screen,0,0,0,0,SCREEN_W,SCREEN_H);
58 
59 
60 while(!key[KEY_ESC]) //program bedzie dzialac dopoki nie wcisne ESC
61{
62  
63  update_eye(&eye,backbuffer);
64  readkey();
65  if (key[KEY_L])
66    {
67               if ((index-eye)>=start)
68               {
69               index=index-eye;
70               textprintf_ex(backbuffer, font, 10, 360, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
71               
72               }
73               else
74               {               
75               index=end-(eye-*index);
76               textprintf_ex(backbuffer, font, 10, 360, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
77               }
78               
79    }
80    else if (key[KEY_R])
81    {
82               if ((index+eye)<=end)
83               {
84               index=index+eye;
85               textprintf_ex(backbuffer, font, 10, 360, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
86               }
87               else
88               {               
89               index=start+(eye-(*end-*index))-1;
90              textprintf_ex(backbuffer, font, 10, 360, makecol(0, 0, 0), -1, "You are now on field number: %d", *index);
91               }
92    }
93 
94  blit(backbuffer,screen,0,0,0,0,SCREEN_W,SCREEN_H);
95  clear_to_color(backbuffer,makecol(255,255,255)); //Clear the buffer for next time
96}
97 
98destroy_bitmap(plan);
99destroy_bitmap(pawn);
100destroy_bitmap(backbuffer);
101allegro_exit();
102return 0;
103 
104 
105 
106}
107END_OF_MAIN()

It is still quite ugly.

what i think that you were forgetting is that you were NOT clearing the screen before you wrote to it again.

So every time through that while loop, you were printing on top of the text that was still on there from last time.

(\ /)
(O.o)
(> <)

a b

Member #8,092

December 2006

thanks, but can't I clearing screen easier ?

m c

Member #5,337

December 2004

yes, you could just
clear_bitmap(screen);
i suppose. It's just that people normally use a double buffer to negate any chances of tearing, which usually looks pretty bad.

(\ /)
(O.o)
(> <)

Archon

Member #4,195

January 2004

Quote:

thanks, but can't I clearing screen easier ?

You don't clear the 'screen', you should clear the 'backbuffer' which should be as big as the screen.

BAF

Member #2,981

December 2002

Why are you clearing the backbuffer to white? Usually you just clear_bitmap and put it to black.

And, as Archon said, you don't need to clear the screen.

BAF.zone | SantaHack!

X-G

Member #856

December 2000

Guys, this is a lost cause. Just... do something better.

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