Text with Allegro

**godly 20** · 01-21-2011

Hi. I'm currently programming a small 2d game usign the allegro library. I need the game to print out a few messages. I tried with the "textout()" function but apparently it the text is drawn undea all the other levels and i only see it for a fraction of second when I close the app.
How can I fix this?

**GReaper** · 01-21-2011

Draw after all the other! Isn't it simple?

**godly 20** · 01-22-2011

If it was that easy I wouldn't have posted this question here don't you think? I have tried to write it on anything but it still doesnt work. Atm I have a buffer, a backbuffer and the screen. And it doesnt work on any of these.

**GReaper** · 01-22-2011

Could you show the relevant code, then? ( Please use code tags )

**godly 20** · 01-22-2011

Code:

#include <allegro.h>
#include <iostream>
using namespace std;
BITMAP* ground;
BITMAP* water;
BITMAP* tree;
BITMAP* rock;
BITMAP* character;
BITMAP* buffer;
BITMAP *backbuffer; 
BITMAP *tree2;

//These will hold the player's position
//instead of using pixels, we will use the position within the 2d array
float x, y;
int grounds, waters, trees, tree2s, rocks;

//This will be our background, 1 = grass, 3 = water.
int map[24][32] = {{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
                   {3,3,3,3,3,3,3,3,3,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}};

//This will contain all the objects, 100 = player, 101 = tree, 102 = rock.
int objMap[24][32] = {{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,102,0,103,0,0,0,103,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,101,0,0,0,0,101,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,101,0,0,0,0,101,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,100,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
                   {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}};

void moveChar()
{
     while( !key[KEY_ESC])
     {
		  blit(backbuffer, screen, 0, 0, 0, 0, buffer->w, buffer->h);
		     
    		draw_sprite(backbuffer, buffer, 0,0) ;

			draw_sprite(backbuffer, character, x, y) ;
			
            if(key [KEY_LEFT]) x-=0.5 ;
            if((key [KEY_LEFT]) && (key [KEY_R])) x-=1;
            if(key [KEY_RIGHT]) x+=0.5;
            if((key [KEY_RIGHT]) && (key [KEY_R])) x+=1;      
            if(key [KEY_DOWN]) y+=0.5; 
            if((key [KEY_DOWN]) && (key [KEY_R])) y+=1;       
            if(key [KEY_UP]) y-=0.5;
            if((key [KEY_UP]) && (key [KEY_R])) y-=1; 

          if((x<=176)&&(y>=250)) //collision with map borders & objects
           {
                                  
                        y-=2;
                        
           }
           if((x<=176)&&(y>=250))
           {
                                  
                        x+=2;
                        
           }
              if((x>=428)&&(y<=122))
           {
                                  
                        y+=2;
                        
           }
              if((x>=428)&&(y<=122))
           {
                                  
                        x-=2;
                        
           }            
                                    
            
           if((x>=410)&&(y>=199))
           {
                                    x-=2;
                        
                        
           }       
           if((x>=410)&&(y>=199))
           {
                                    
                        y-=2;
                        
           }       
                          
            if(y<=0)
            y+=3;
            if(x<=0)
            x+=3;
            if(y>=417)
            y-=3;
            if(x>=583)
            x-=3;
            } 
    
    destroy_bitmap(buffer);
    destroy_bitmap(backbuffer);
    destroy_bitmap(character);
    release_screen();
    rest(100);

} 

void setupGame()
{
    buffer = create_bitmap( 640, 480);
	backbuffer = create_bitmap( 640, 480);
	
    ground = load_bitmap( "ground2.bmp", NULL);
    water = load_bitmap( "water(2).bmp", NULL);
    tree = load_bitmap( "sprite-0001.bmp", NULL);
    rock = load_bitmap( "Immagine.bmp", NULL);
    character = load_bitmap( "anim2.bmp", NULL);
    tree2 = load_bitmap( "albero2.bmp", NULL);
    grounds = 1;
    waters = 3;
    trees = 101;
    tree2s = 103;
    rocks = 102;

  //  draw_sprite( screen, buffer, 0, 0);
          

	for (int i = 0; i <= 24; i++){
     
        for( int t = 0; t <= 32; t++){
            
            if( map[i][t] == 1) draw_sprite( buffer, ground, t * 20, i * 20);
            else if( map[i][t] == 3) draw_sprite( buffer, water, t * 20, i * 20);
            
           }       
        
    }  
    
    //draw_sprite( screen, buffer, 0, 0);
    
        for (int i = 0; i <= 24; i++){
     
        for( int t = 0; t <= 32; t++){
            
            if( objMap[i][t] == 101) draw_sprite( buffer, tree, t * 20, i * 20);
            else if( objMap[i][t] == 102) draw_sprite( buffer, rock, t * 20, i * 20);
            else if( objMap[i][t] == 103) draw_sprite( buffer, tree2, t * 20, i * 20);
            
           }       
        
    }
   	
}  

int main()
{    
    allegro_init();
    install_keyboard();
    set_color_depth(32);
    set_gfx_mode( GFX_AUTODETECT_WINDOWED, 640, 480, 0, 0);
    
    BITMAP* bmp = create_bitmap(640, 480);
    blit(bmp, screen, 0, 0, 0, 0, 0, 0);
    setupGame();    
    moveChar();
    destroy_bitmap(bmp);
    
    cout <<"Posizione x: "<<x<<endl;
    cout <<"Posizione y: "<<y<<endl;
      
    return 0;
}
END_OF_MAIN();

**VirtualAce** · 01-22-2011

I think some object oriented code would certainly help a bit here.

**Eman** · 01-22-2011

you can't use cout..you would have to use a console screen that works with allegro..
in the while loop
try using
textprintf_ex but the buffer would be backbuffer not screen

Code:

textprintf_ex(backbuffer, font, 10, 10, makecol(255, 100, 200),
		    -1, "Score: %d", player_score);

**godly 20** · 01-23-2011

The cout at the bottom of the main work perfectly. They're just there because they print on a separate dos widnow the position of the character in the x and y coordinates.
Ok, I put the code you gave me at the top of the while loop and it worked. Thanks. Now, how can i make it display the x and y coordinates so that they change when the player moves?

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