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IMG_Load on Linux

mister bean

Joined: 16 Feb 2015

Posts: 5

Posted: Fri Apr 17, 2015 4:18 am

Hi everyone. I am a C student and I am making a library to improve my projects.
I am using gcc on Linux and MingW on Windows. When I open my project on Windows
the Image and the background works well, but when I go to Linux the same backgrounds
which work on Windows don't show.
What did I miss?

Here is my main code code:

Code:

/*
* File: main.h
* Author: Bean Dragon
*
* Created on 19 de Março de 2015, 21:50
*/

#ifndef MAIN_H
#define MAIN_H

#include <place.h>

#ifdef __cplusplus
extern "C" {
#endif
static SPRITE * sprite_global = NULL;
///static SOUND * sound_global = NULL;
static STATUS init(PLACE ** to);
static OBJECT * object_start(PLACE * to);
static STATUS update(PLACE * to);
static void destroy(PLACE * to);

static STATUS init(PLACE ** to) {
*to = place_set(
0,
machine_set(0, "Animation", 1280, 800, 0, 0, SDL_INIT_EVERYTHING,
SDL_WINDOW_FULLSCREEN, audio_standard()),
connection_set(NULL, 5000));
if (!(*to)->start(*to)) {
fprintf(stderr, "Could not init machine\n\n");
return (Off);
}
#ifdef WIN32
if (!sprite_global) {/// load all the images from project here
sprite_next_front(
&sprite_global,
sprite_set((*to)->machine->RENDERER,
"E:/Image/Background/green.jpg", "Cliff"));
sprite_next_front(
&sprite_global,
sprite_set((*to)->machine->RENDERER,
"E:/Image/sprite/twinsen/twinsen-front-up.png",
"Twinsen Front Up"));
sprite_next_front(
&sprite_global,
sprite_set((*to)->machine->RENDERER,
"E:/Image/sprite/twinsen/twinsen-back.png",
"Twinsen Back"));
sprite_next_front(
&sprite_global,
sprite_set((*to)->machine->RENDERER,
"E:/Image/sprite/twinsen/twinsen-side-up.png",
"Twinsen Side Up"));
sprite_next_front(
&sprite_global,
sprite_set((*to)->machine->RENDERER,
"E:/Image/sprite/twinsen/twinsen-diagonal-up1.png",
"Twinsen Diagonal Up"));
sprite_next_front(
&sprite_global,
sprite_set((*to)->machine->RENDERER,
"E:/Image/sprite/twinsen/twinsen-back-diagonal.png",
"Twinsen Back Diagonal"));
}
#elif __linux__
if (!sprite_global) {/// load all the images from project here
sprite_next_front(&sprite_global, sprite_set((*to)->machine->RENDERER, "/media/bean/Traveler/Image/Background/Rock.png", "Cliff"));
sprite_next_front(&sprite_global, sprite_set((*to)->machine->RENDERER, "/media/bean/Traveler/Image/sprite/twinsen/twinsen-front-up.png", "Twinsen Front Up"));
sprite_next_front(&sprite_global, sprite_set((*to)->machine->RENDERER, "/media/bean/Traveler/Image/sprite/twinsen/twinsen-back.png", "Twinsen Back"));
sprite_next_front(&sprite_global, sprite_set((*to)->machine->RENDERER, "/media/bean/Traveler/Image/sprite/twinsen/twinsen-side-up.png", "Twinsen Side Up"));
sprite_next_front(&sprite_global, sprite_set((*to)->machine->RENDERER, "/media/bean/Traveler/Image/sprite/twinsen/twinsen-diagonal-up1.png", "Twinsen Diagonal Up"));
sprite_next_front(&sprite_global, sprite_set((*to)->machine->RENDERER, "/media/bean/Traveler/Image/sprite/twinsen/twinsen-back-diagonal.png", "Twinsen Back Diagonal"));
}
#endif
double x_speed = 20.0, y_speed = 20.0;
(*to)->map_set(
*to,
object_set(0, "Map", 0, 0, x_speed, y_speed, timer_set(1),
sprite_get(sprite_global, "Cliff"),
#ifdef WIN32
sound_set("E:/music/game/mus.mp3", NULL)));
#elif __linux__
sound_set("/media/bean/Traveler/music/game/mus.mp3", NULL)));
#endif
//(*to)->map->width = 1000;
//(*to)->map->height = 1000;
(*to)->object = object_start(*to);
///fprintf(stdout,"***%li\n", (*to)->MAX);
return (On);
}

static OBJECT * object_start(PLACE * to) {
if (to != NULL && to->map != NULL) {
static OBJECT * object = NULL;
long int id, max = 10;
int x = (rand() % to->map_width_get(to));
int y = (rand() % to->map_height_get(to));
double x_speed = 1.0, y_speed = 1.0;
for (id = 0; id < max; id++) {
x = (rand() % to->map_width_get(to));
y = (rand() % ((to->map_height_get(to) / 100) * 75)), y
+= (to->map_height_get(to) / 100) * 25;
if (object != NULL) {
object->next_back(
&object,
object_set(id, "Hero", x, y, x_speed, y_speed,
timer_set(1000 / 25),
sprite_get(sprite_global, "Twinsen Front Up"),
sound_set(NULL, "E:/sound/SonicRing.wav")));
to->MAX++;
} else {
/// like to say OBJECT * object = new Object(...) in c++
object = object_set(id, "Hero", x, y, x_speed + 9.0,
y_speed + 9.0, timer_set(1000 / 25),
sprite_get(sprite_global, "Twinsen Front Up"),
sound_set(NULL, "E:/sound/SonicRing.wav"));
to->MAX++;
}
}
return (object);
}
return (NULL);
}

#define REACH 500

static STATUS update(PLACE * to) {
if (to && to->object) {
static STATUS camera_first_adjust = Off;
long int selected = 0;
OBJECT * hero = to->object->search(to->object, selected), *object =
NULL;
if (camera_first_adjust == Off) {
to->camera_object(to, hero);
camera_first_adjust = On;
}
static STATUS route = Off;
if (!music_is_playing(to->map))
music_play(to->map, 0);
to->camera_mouse(to);
///fprintf(stdout,"#\n");
for (object = to->object; object; object = object->next) {
if (object->id == selected) {
if (to->mouse_button(to, SDL_BUTTON_RIGHT) && to->type(to,
SDL_MOUSEBUTTONDOWN)) {
object->x_route = to->mouse_x_get(to);
object->y_route = to->mouse_y_get(to);
route = On;
}
if (timer_get(object->timer)) {
if (to->key_get(SDL_SCANCODE_LEFT)) {
object->image_set(object,
sprite_get(sprite_global, "Twinsen Side Up"));
object->flip = SDL_FLIP_HORIZONTAL;
object->x_route = object->x - object->x_speed;
to->camera_object(to, object);
route = On;
}
if (to->key_get(SDL_SCANCODE_RIGHT)) {
object->image_set(object,
sprite_get(sprite_global, "Twinsen Side Up"));
object->flip = SDL_FLIP_NONE;
object->x_route = object->x + object->x_speed;
to->camera_object(to, object);
route = On;
}
if (to->key_get(SDL_SCANCODE_UP)) {
object->image_set(object,
sprite_get(sprite_global, "Twinsen Back"));
object->y_route = object->y - object->y_speed;
;
to->camera_object(to, object);
route = On;
}
if (to->key_get(SDL_SCANCODE_DOWN)) {
object->image_set(object,
sprite_get(sprite_global, "Twinsen Front Up"));
object->flip = SDL_FLIP_NONE;
object->y_route = object->y + object->y_speed;
to->camera_object(to, object);
route = On;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_Z) && to->key_get(SDL_SCANCODE_EQUALS)) {
object->width_zoom += 0.1;
object->height_zoom += 0.1;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_Z) && to->key_get(SDL_SCANCODE_MINUS)) {
object->width_zoom -= 0.1;
object->height_zoom -= 0.1;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && !to->key_get(
SDL_SCANCODE_LALT) && to->key_get(SDL_SCANCODE_S)
&& to->key_get(SDL_SCANCODE_EQUALS)) {
object->x_speed += 0.1;
object->y_speed += 0.1;
///fprintf(stdout,"object speed x %lf y %lf\n",object->x_speed,object->y_speed);
}
if (to->key_get(SDL_SCANCODE_LCTRL) && !to->key_get(
SDL_SCANCODE_LALT) && to->key_get(SDL_SCANCODE_S)
&& to->key_get(SDL_SCANCODE_MINUS)) {
object->x_speed -= 0.1;
object->y_speed -= 0.1;
///fprintf(stdout,"object speed x %lf y %lf\n",object->x_speed,object->y_speed);
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_LALT) && to->key_get(SDL_SCANCODE_S)
&& to->key_get(SDL_SCANCODE_EQUALS)) {
to->map->x_speed += 0.1;
to->map->y_speed += 0.1;
///fprintf(stdout,"map speed x %lf y %lf\n",to->map->x_speed,to->map->y_speed);
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_LALT) && to->key_get(SDL_SCANCODE_S)
&& to->key_get(SDL_SCANCODE_MINUS)) {
to->map->x_speed -= 0.1;
to->map->y_speed -= 0.1;
///fprintf(stdout,"map speed x %lf y %lf\n",to->map->x_speed,to->map->y_speed);
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_A) && to->key_get(SDL_SCANCODE_EQUALS)) {
object->angle += 1.0;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_A) && to->key_get(SDL_SCANCODE_MINUS)) {
object->angle -= 1.0;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_A) && to->key_get(SDL_SCANCODE_0)) {
object->angle = 0.0;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_T) && to->key_get(SDL_SCANCODE_EQUALS)) {
object->color->a += 1;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_T) && to->key_get(SDL_SCANCODE_MINUS)) {
object->color->a -= 1;
}
if (to->key_get(SDL_SCANCODE_LCTRL) && to->key_get(
SDL_SCANCODE_T) && to->key_get(SDL_SCANCODE_0)) {
object->color->a = 255;
}
if (route) {
if (!object_route(to, object, object->x_route,
object->y_route)) {
if (object->where == NORTH) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Back"));
}
if (object->where == NORTHEAST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Back Diagonal"));
object->flip = SDL_FLIP_NONE;
}
if (object->where == NORTHWEST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Back Diagonal"));
object->flip = SDL_FLIP_HORIZONTAL;
}
if (object->where == SOUTH) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Front Up"));
}
if (object->where == SOUTHEAST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Diagonal Up"));
object->flip = SDL_FLIP_HORIZONTAL;
}
if (object->where == SOUTHWEST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Diagonal Up"));
object->flip = SDL_FLIP_NONE;
}
if (object->where == WEST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Side Up"));
object->flip = SDL_FLIP_HORIZONTAL;
}
if (object->where == EAST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Side Up"));
object->flip = SDL_FLIP_NONE;
}
} else
route = Off;
}
timer_start(object->timer);
}
} else if (object->id != selected) { /// controle da maquina
if (timer_get(object->timer)) {
if (object_route(to, object, object->x_route,
object->y_route)) {

object->x_route = (rand() % (int) (to->map->width
* to->map->width_zoom));
int y_size = (int) (to->map->height
* to->map->height_zoom);
object->y_route = (rand() % ((y_size / 100) * 75)), object->y_route
+= ((y_size / 100) * 25);

} else {
OBJECT * hero = object->search(to->object, selected);
if (object->x >= hero->x - REACH && object->x
<= hero->x + REACH && object->y >= hero->y
- REACH && object->y <= hero->y + REACH) {
object->x_route = hero->x;
object->y_route = hero->y;
///fprintf(stdout, "%li following %li\n",object->id,hero->id);

}
if (!object_route(to, object, object->x_route,
object->y_route)) {
if (object->where == NORTH) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Back"));
}
if (object->where == NORTHEAST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Back Diagonal"));
object->flip = SDL_FLIP_NONE;
}
if (object->where == NORTHWEST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Back Diagonal"));
object->flip = SDL_FLIP_HORIZONTAL;
}
if (object->where == SOUTH) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Front Up"));
}
if (object->where == SOUTHEAST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Diagonal Up"));
object->flip = SDL_FLIP_HORIZONTAL;
}
if (object->where == SOUTHWEST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Diagonal Up"));
object->flip = SDL_FLIP_NONE;
}
if (object->where == WEST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Side Up"));
object->flip = SDL_FLIP_HORIZONTAL;
}
if (object->where == EAST) {
object->image_set(
object,
sprite_get(sprite_global,
"Twinsen Side Up"));
object->flip = SDL_FLIP_NONE;
}
}
}
timer_start(object->timer);
}

}
}
///fprintf(stdout,"*\n");
to->update(to);
to->show(to);
if (PLACE_EXIT(to))
to->stop(to);
return (On);
}
return (Off);
}

static void destroy(PLACE * to) {
to->destroy(to);
}
#ifdef __cplusplus
}
#endif

#endif /* MAIN_H */

And Here is the function that I am using to load the sprites

Code:

PLACE_CALL SPRITE *
sprite_set(SDL_Renderer * renderer, SDL_PixelFormat * pixel, const char * path, char * name) {
if (renderer == NULL)
return (NULL);
SPRITE * to = (SPRITE *) malloc(sizeof (SPRITE));
if (to == NULL)
return (NULL);
if (name != NULL) {
to->name = strdup(name);
}
SDL_Surface * image = (path) ? IMG_Load(path) : NULL;
if (!image)return (NULL);
SDL_Surface * optimized = SDL_ConvertSurface(image,pixel,0);
to->sprite = (optimized != NULL) ? SDL_CreateTextureFromSurface(renderer,optimized) : NULL;
to->next = NULL;
to->preview = NULL;
return (to);
}

I don't know why it does happen. Help me, please.

MrTAToad

Joined: 13 Feb 2014

Posts: 205

Location: Chichester, England

Posted: Fri Apr 17, 2015 9:44 am

To start with, your E drive won't exist on Linux - nor any other drive letter...

MrTAToad

Joined: 13 Feb 2014

Posts: 205

Location: Chichester, England

Posted: Fri Apr 17, 2015 9:46 am

In addition, file names are case sensitive. Pathing may be better using "./xxx" instead of just "/xxx"

Thanks for reply

mister bean

Joined: 16 Feb 2015

Posts: 5

Posted: Fri Apr 17, 2015 1:57 pm

MrTAToad. The problem is not the way I am using the letter's call. Because other images can be loaded even on Linux.
The only problem is that, not every image displays on Linux. The same image which displays on windows doesn't display
on Linux. Eg: if I try to use the "Rock.jpg" on Linux it doesn't show, but on Windows it does. Even if I spell all the letters
in case sensitive. It looks like the pallet on Linux is not able to allocate all needed memory to display the image.

I don't know what to do anymore.

MrTAToad

Joined: 13 Feb 2014

Posts: 205

Location: Chichester, England

Posted: Fri Apr 17, 2015 3:07 pm

Mister Bean. The linux version is behind on the Windows version - its possible there is a bug, which can only be fixed by downloading the source and compiling it yourself.

Or you could try changing graphics formats.

Do you mean the sdl2 source?

mister bean

Joined: 16 Feb 2015

Posts: 5

Posted: Fri Apr 17, 2015 4:47 pm

MrTAToad, Is there a bug in the SDL2's .so library?
Do I have to download the source and construct it through make?
Or it is a problem in the SDL2_image?

MrTAToad

Joined: 13 Feb 2014

Posts: 205

Location: Chichester, England

Posted: Sat Apr 18, 2015 12:37 pm

I have no idea what problems the Linux version had - haven't used it yet. It could be to do with SDL2, but more likely to do with SDL2_Imahlge

The SDL forums have moved to discourse.libsdl.org. This is just a read-only archive of the previous forums, to keep old links working.

The SDL forums have moved to discourse.libsdl.org.
This is just a read-only archive of the previous forums, to keep old links working.