3d matrix

3d matrix

vixinu

Member #7,343

June 2006

Just out of curiosity, I'm not working on anyrhin 3d, how would you do a 3d tilemap matrix, ex. a

3 x 3 x 3

Andrei Ellman

Member #3,434

April 2003

I'd use a 3 dimensional array.

AE.

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vixinu

Member #7,343

June 2006

Oops, I worded that wrong. I kinda meant how you programmed a 3d array.

By the way, where did you get that animation?

LennyLen

Member #5,313

December 2004

Quote:

I kinda meant how you programmed a 3d array.

Here's an example:

1#define WIDTH 20
2#define HEIGHT 25
3#define DEPTH 10
4 
5int main() {
6 
7    int x, y, z;
8    int map[WIDTH][HEIGHT][DEPTH];
9 
10    for( z = 0; z < DEPTH; z++ ) {
11 
12        for( y = 0; y < HEIGHT; y++ ) {
13 
14            for( x = 0; x < WIDTH; x++ ) {
15 
16                map[x][y][z] = 0;
17 
18            }
19 
20        }
21 
22    }
23 
24    return 0;
25 
26}

Avenger

Member #4,550

April 2004

Quote:

int map[WIDTH][HEIGHT][DEPTH];

I believe this is more accurate:
int map[DEPTH][HEIGHT][WIDTH];

With arrays you have to use inverse of what you want (for optimal memory access that is).

vixinu

Member #7,343

June 2006

So how do you do a tilemap w/ a 3d array?

gnolam

Member #2,030

March 2002

By letting the array elements denote tiles. ::)

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vixinu

Member #7,343

June 2006

But with the numbers denoting tiles.

gnolam

Member #2,030

March 2002

IHBT, IHL, HAND?

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vixinu

Member #7,343

June 2006

which are?.?.?

LennyLen

Member #5,313

December 2004

I think gnolam is wondering if you have the faintest idea of what you are talking about.

vixinu

Member #7,343

June 2006

I haven't done anything 3D before. Besides, you're not gnolam. Gnolam can speak for himself.

gnolam

Member #2,030

March 2002

I'm simply wondering if you're trolling or if you really are as thick as you appear to be...

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LennyLen

Member #5,313

December 2004

Quote:

Gnolam can speak for himself

Yes, but I get the feeling that it would have to be censored.

Quote:

I haven't done anything 3D before.

Well for starters, you don't use tilemaps in 3D graphics. A 3d tilemap array is something different. It allows you to add layers to 2d tilemaps so that you can do things like 'fake 3d' games, and animated tiles.

vixinu

Member #7,343

June 2006

Jonny Cook

Member #4,055

November 2003

So you have a 3D array, right? It can be an array of ints. You loop through it, just as described by LennyLen. Each int can hold say, 1 or 0. 1 is for a tile, 0 is for no tile. Assuming you have a bitmap/model representation for the tile, you could do something like this.

    for( z = 0; z < DEPTH; z++ ) {

        for( y = 0; y < HEIGHT; y++ ) {

            for( x = 0; x < WIDTH; x++ ) {
                if (map[x][y][z]) {
                    DrawTile(x, y, z);
                }
            }
 
        }

    }

That's a very simple tile map. I'll leave it up to you to decide how DrawTile is implemented.

[edit]
It's a good idea to figure out what something is before you ask for help on how to implement it.

The face of a child can say it all, especially the mouth part of the face.

Andrei Ellman

Member #3,434

April 2003

LennyLen said:

You could still design a 3D level by using a 3D array to represent which blocks appear at certain discrete locations in 3D space (gap, brick wall, metal wall, etc.). You'd be using blocks instead of tiles, but you'd be using a 3D array like you would do for a 3D tilemap.

3D tilemaps are probably best sed for 2D games where the tiles consist of several layers (eg. what lies under the floor, the floor, the walls, and a transparent ceiling).

vixinu said:

By the way, where did you get that animation?

See this thread

AE.

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vixinu

Member #7,343

June 2006

This has nothing to do with anything in the topic thus far, but I get this error message when I run my code in g++:

error message:

maptest.cpp: In function 'int _mangled_main(int, char**)':
maptest.cpp:27: error: expected initializer before 'bmp'
maptest.cpp:50: error: 'x' was not declared in this scope
maptest.cpp:62: error: 'tilesize' was not declared in this scope
/usr/local/include/allegro/datafile.h:81: error: too few arguments to function 'BITMAP* load_bitmap(const char*, RGB*)'
maptest.cpp:67: error: at this point in file

code:

1#include <allegro.h>
2 
3int main(int argc, char *argv[])
4{
5allegro_init();
6install_keyboard();
7set_color_depth(16);
8set_gfx_mode(GFX_AUTODETECT_WINDOWED, 640, 480, 0, 0);
9 
10BITMAP *buffer = NULL;
11buffer = create_bitmap(640, 480);
12blit(buffer, screen, 0, 0, 0, 0, 640, 480);
13 
14//load bitmap
15 
16BITMAP *bmp
17 
18bmp = load_bitmap("Woodland_Tileset.png");
19 
20//load tilemap
21 
22int tilemap[5][5] = {
23  { 96, 96, 96, 96, 96 },
24  { 96, 96,  0,  0, 96 },
25  { 96,  0,  0,  0, 96 },
26  { 96,  0,  0, 96, 96 },
27  { 96, 96, 96, 96, 96 }
28};
29 
30int tile_number = 96; //Set to the tile number wanted
31BITMAP* tileset; //Set to tileset to be loaded
32int tile_size = 32; //Set this to how many pixels big each tile is
33int set_x = tile_number % (tileset->w / tile_size);
34int set_y = tile_number / (tileset->w / tile_size);
35 
36//Put tileset on screen
37 
38for (int y = 0; y < 5; y++)
39{
40  //Find out what tileset index to use based on the tilemap at the current (x, y) coordinates
41  int set_x = tilemap[y][x] % (tileset->w / tile_size);
42  int set_y = tilemap[y][x] / (tileset->w / tile_size);
43  //Put it on the buffer
44  //  blit(tileset, buffer,
45  //Blit from the tileset to the screen
46  //  set_x * tile_size, set_y * tile_size,
47  //starting at the pixel coordinates of the desired tile
48  //  x * tile_size, y * tile_size,
49  //put on the screen at the proper place
50  //  tile_size, tile_size);
51  //and put only 1 tile's worth of pixels
52  //To put this all together:
53  blit(tileset, buffer, set_x * tile_size, set_y * tilesize, x * tilesize, y * tilesize, tile_size, tile_size);
54}
55 
56BITMAP *sprite;
57 
58sprite = load_bitmap("Sprite.png");
59 
60draw_sprite(buffer, sprite, 0, 0);
61 
62int sprite_x = 0;
63int sprite_y = 0;
64 
65while(!key[KEY_ESC])
66{
67  if(key[KEY_RIGHT])
68  {
69    sprite_x +  32;
70  }
71  else if(key[KEY_LEFT])
72  {
73    sprite_x - 32;
74  }
75  else if(key[KEY_UP])
76  {
77    sprite_y - 32;
78  }
79  else if(key[KEY_DOWN])
80  {
81    sprite_y + 32;
82  }
83}
84 
85destroy_bitmap(sprite);
86destroy_bitmap(buffer);
87return 0;
88}
89END_OF_MAIN()

gnolam

Member #2,030

March 2002

I stand by my previous comment(s).

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vixinu

Member #7,343

June 2006

Which ones?

Neil Walker

Member #210

April 2000

He's wondering if you're trolling.

Neil.
MAME Cabinet Blog / AXL LIBRARY (a games framework) / AXL Documentation and Tutorial

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vixinu

Member #7,343

June 2006

No.

[edit]I found a few reasons for a few of the bugs, and cut it down to specific code. Now the error is:

maptest.cpp:26: error: at this point in file

the code is: (starting line 10)

1#include <allegro.h>
2 
3int main()
4{
5allegro_init();
6set_color_depth(16);
7set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0);
8 
9BITMAP *buffer = NULL;
10buffer = create_bitmap(640, 480);
11blit(buffer, screen, 0, 0, 0, 0, 640, 480);
12 
13//load bitmap
14 
15BITMAP *bmp;
16 
17bmp = load_bitmap("Woodland_Tileset.png");
18 
19//load tilemap
20 
21int tilemap[5][5] = {
22  { 96, 96, 96, 96, 96 },
23  { 96, 96,  0,  0, 96 },
24  { 96,  0,  0,  0, 96 },
25  { 96,  0,  0, 96, 96 },
26  { 96, 96, 96, 96, 96 }
27};
28 
29int tile_number = 96; //Set to the tile number wanted
30BITMAP* tileset; //Set to tileset to be loaded
31int tile_size = 32; //Set this to how many pixels big each tile is
32int set_x = tile_number % (tileset->w / tile_size);
33int set_y = tile_number / (tileset->w / tile_size);
34 
35//Put tileset on screen
36 
37for (int y = 0; y < 5; y++)
38{
39  for (int x = 0; x < 5; x++)
40  {
41  int tilesize = 32;
42   //Find out what tileset index to use based on the tilemap at the current (x, y) coordinates
43  int set_x = tilemap[y][x] % (tileset->w / tile_size);
44  int set_y = tilemap[y][x] / (tileset->w / tile_size);
45  //Put it on the buffer
46  //  blit(tileset, buffer,
47  //Blit from the tileset to the screen
48  //  set_x * tile_size, set_y * tile_size,
49  //starting at the pixel coordinates of the desired tile
50  //  x * tile_size, y * tile_size,
51  //put on the screen at the proper place
52  //  tile_size, tile_size);
53  //and put only 1 tile's worth of pixels
54  //To put this all together:
55  blit(tileset, buffer, set_x * tile_size, set_y * tilesize, x * tilesize, y * tilesize, tile_size, tile_size);
56}}
57 
58destroy_bitmap(buffer);
59return 0;
60}
61END_OF_MAIN()

LennyLen

Member #5,313

December 2004

Try using load_bitmap() correctly.

deps

Member #3,858

September 2003

Quote:

Try using load_bitmap() correctly.

And check the manual if you have any questions on how to use it.
You can click on it in the code you posted for a quick link.

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vixinu

Member #7,343

June 2006

I've read the manual, here is my new error and code:

maptest.cpp:36: error: expected primary-expression before 'palette'

1#include <allegro.h>
2 
3int main()
4{
5allegro_init();
6set_color_depth(16);
7set_gfx_mode(GFX_AUTODETECT, 640, 480, 0, 0);
8 
9BITMAP *buffer = NULL;
10buffer = create_bitmap(640, 480);
11blit(buffer, screen, 0, 0, 0, 0, 640, 480);
12 
13//load bitmap
14 
15typedef struct RGB
16{
17  unsigned char r, g, b;
18} RGB;
19typedef struct PALETTE
20{
21  RGB PALETTE[PAL_SIZE];
22} PALETTE;
23 
24BITMAP *bmp;
25PALETTE *palette;
26set_color_conversion(COLORCONV_REDUCE_TO_256);
27bmp = load_bitmap("Woodland_Tileset.bmp", RGB palette);
28 
29//load tilemap
30 
31int tilemap[5][5] = {
32  { 96, 96, 96, 96, 96 },
33  { 96, 96,  0,  0, 96 },
34  { 96,  0,  0,  0, 96 },
35  { 96,  0,  0, 96, 96 },
36  { 96, 96, 96, 96, 96 }
37};
38 
39int tile_number = 96; //Set to the tile number wanted
40BITMAP* tileset; //Set to tileset to be loaded
41int tile_size = 32; //Set this to how many pixels big each tile is
42int set_x = tile_number % (tileset->w / tile_size);
43int set_y = tile_number / (tileset->w / tile_size);
44 
45//Put tileset on screen
46 
47for (int y = 0; y < 5; y++)
48{
49  for (int x = 0; x < 5; x++)
50  {
51  int tilesize = 32;
52  //Find out what tileset index to use based on the tilemap at the current (x, y) coordinates
53  int set_x = tilemap[y][x] % (tileset->w / tile_size);
54  int set_y = tilemap[y][x] / (tileset->w / tile_size);
55  //Put it on the buffer
56  //  blit(tileset, buffer,
57  //Blit from the tileset to the screen
58  //  set_x * tile_size, set_y * tile_size,
59  //starting at the pixel coordinates of the desired tile
60  //  x * tile_size, y * tile_size,
61  //put on the screen at the proper place
62  //  tile_size, tile_size);
63  //and put only 1 tile's worth of pixels
64  //To put this all together:
65  blit(tileset, buffer, set_x * tile_size, set_y * tilesize, x * tilesize, y * tilesize, tile_size, tile_size);
66}}
67 
68destroy_bitmap(buffer);
69return 0;
70}
71END_OF_MAIN()