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| [A5] How do I use the addons? |
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SpectreNectar
Member #10,969
May 2009
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Me again. So I'm experimenting with A5 and would like to draw primitive shapes or display bmp files :-) I checked, the test.bmp file IS there, but still I see a yellow square. ALLEGRO_BITMAP *bmp = al_load_bitmap("test.bmp"); fails. The conclusion: Quote: Note: the core Allegro library does not support any image file formats by default. You must use the allegro_image addon, or register your own format handler Recently I asked how to link to Allegro5. Today I'm asking how to use addons in Code::Blocks 10. I tried project -> build options -> linker settings, and added liballegro_image-5.0.0-RC2-mt.a (what are the debug ones for?) Didn't work. Can someone help me? Again. Here's my code in case I actually already have it working but am missing something: anim.h 1#ifndef ANIM_H_INCLUDED
2#define ANIM_H_INCLUDED
3
4#include <stdio.h>
5#include <allegro5/allegro.h>
6#include <allegro5/allegro_image.h>
7
8class Sprite {
9
10 public:
11
12 Sprite(const char * filename);
13 ~Sprite();
14
15 ALLEGRO_BITMAP *get();
16 void set(const char *filename);
17
18 virtual void draw(int x, int y);
19
20 protected:
21
22 ALLEGRO_BITMAP *gfx;
23 int w, h;
24 bool isLoaded;
25 bool isInitialized;
26
27};
28
29
30class Anim : public Sprite {
31
32 public:
33
34 Anim(const char * filename, int frames, int dirs);
35
36 void draw(int x, int y, int a);
37
38 private:
39 //frame, dir etc.
40 int num_frames;
41 int num_dirs;
42
43};
44
45
46#endif // ANIM_H_INCLUDED
anim.cpp 1#include "anim.h"
2
3
4Sprite::Sprite(const char * filename) {
5
6 isInitialized = false;
7 isLoaded = false;
8 gfx = 0;
9
10 w = h = 0;
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12 set(filename);
13
14}
15
16Sprite::~Sprite() {
17
18 if(isInitialized) {
19 al_destroy_bitmap(gfx);
20 }
21
22}
23
24void Sprite::set(const char * filename) {
25
26 ALLEGRO_BITMAP *bmp = al_load_bitmap("test.bmp");
27
28 if(!bmp) {
29 bmp = al_create_bitmap(32,32);
30 if(bmp) {
31
32 ALLEGRO_BITMAP * temp = al_get_target_bitmap();
33 al_set_target_bitmap(bmp);
34
35 al_clear_to_color(al_map_rgb(255, 255, 0));
36
37 al_set_target_bitmap(temp);
38
39 gfx = bmp;
40 isInitialized = true;
41 }
42 isLoaded = false;
43 } else {
44 gfx = bmp;
45 isLoaded = true;
46 isInitialized = true;
47 }
48
49 if(isInitialized) {
50 w = al_get_bitmap_width(gfx);
51 h = al_get_bitmap_height(gfx);
52 }
53
54}
55
56ALLEGRO_BITMAP * Sprite::get() {
57
58 return gfx;
59
60}
61
62
63void Sprite::draw(int x, int y) {
64
65 al_draw_bitmap(gfx, x,y, 0);
66
67}
68
69
70
71Anim::Anim(const char * filename, int frames=1, int dirs=8) : Sprite(filename) {
72 num_frames = frames;
73 num_dirs = dirs;
74}
75
76void Anim::draw(int x, int y, int a) {
77
78 al_draw_bitmap_region(gfx, 0,0, w, h, x-w/2,y-h/2, 0);
79
80}
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Matthew Leverton
Supreme Loser
January 1999
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Have you called al_init_image_addon()? |
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SpectreNectar
Member #10,969
May 2009
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I had not. |
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jmasterx
Member #11,410
October 2009
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al_init(); //allegro itself al_init_image_addon(); //bitmaps, pngs, jpegs etc al_init_font_addon(); //for fonts, just bitmap ones al_init_primitives_addon(); //rectangles, circles, triangles etc al_init_ttf_addon(); // true type fonts (scalable vector fonts) al_install_mouse(); //the mouse al_install_keyboard(); //the keyboard al_install_joystick(); //game pads al_install_audio(); //for audio, WAVs, al_init_acodec_addon(); //audio codecs like OGG and FLAC
Agui GUI API -> https://github.com/jmasterx/Agui |
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