config* cfg_load_file(const char* filename) {
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Cannot load file %s", filename);
}
config* c = malloc(sizeof(config));
c->entries = dict_new(512);
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
if (line[0] == '#') continue;
if (line[0] == '\r') continue;
if (line[0] == '\n') continue;
char key[1024];
char val[1024];
if (sscanf(line, "%[^ \r\n=] = %[^ \r\n=]", key, val) == 2) {
char* val_cpy = malloc(strlen(val) + 1);
strcpy(val_cpy, val);
dict_set(c->entries, key, val_cpy);
}
}
SDL_RWclose(file);
return c;
}
shader_program* prog_load_file(char* filename) {
shader_program* sp = shader_program_new();
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Could not load file %s", filename);
}
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
char type[256];
char path[1024];
if (sscanf(line, "%256s : %1024s", type, path) == 2) {
if(!asset_loaded(path)) {
load_file(path);
}
shader* s = asset_get(path);
shader_program_attach_shader(sp, s);
}
}
SDL_RWclose(file);
shader_program_link(sp);
shader_program_print_log(sp);
int error = 0;
glGetProgramiv(*sp, GL_LINK_STATUS, &error);
if (error == GL_FALSE) {
error("Linking Error on Shader Program %s.", filename);
}
return sp;
}
lang* lang_load_file(const char* filename) {
lang* t = malloc(sizeof(lang));
t->map = dict_new(512);
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Could not load file %s", filename);
}
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
char id[1024];
char text[1024];
if (sscanf(line, "%s %[^\r\n]", id, text) == 2) {
/* Replace newlines */
for(int i = 0; i < strlen(text); i++) {
if (text[i] == '\\' && text[i+1] == 'n') {
text[i] = ' ';
text[i+1] = '\n';
}
}
char* text_cpy = malloc(strlen(text) + 1); strcpy(text_cpy, text);
dict_set(t->map, id, text_cpy);
}
}
SDL_RWclose(file);
return t;
}
animation* ani_load_file(char* filename) {
int state = STATE_LOAD_EMPTY;
animation* a = animation_new();
skeleton* base = skeleton_new();
frame* f = NULL;
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Could not load file %s", filename);
}
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
if (state == STATE_LOAD_EMPTY) {
int version;
if (sscanf(line, "version %i", &version) > 0) {
if (version != 1) {
error("Can't load ani file '%s'. Don't know how to load version %i\n", filename, version);
}
}
if (strstr(line, "nodes")) {
state = STATE_LOAD_NODES;
}
if (strstr(line, "skeleton")) {
state = STATE_LOAD_SKELETON;
}
}
else if (state == STATE_LOAD_NODES) {
char name[1024];
int id, parent;
if (sscanf(line, "%i \"%[^\"]\" %i", &id, name, &parent) == 3) {
skeleton_joint_add(base, name, parent);
}
if (strstr(line, "end")) {
state = STATE_LOAD_EMPTY;
}
}
else if (state == STATE_LOAD_SKELETON) {
float time;
if (sscanf(line, "time %f", &time) == 1) {
f = animation_add_frame(a, base->rest_pose);
}
int id;
float x, y, z, rx, ry, rz;
if (sscanf(line, "%i %f %f %f %f %f %f", &id, &x, &y, &z, &rx, &ry, &rz) > 0) {
f->joint_positions[id] = vec3_new(x, z, y);
mat4 rotation = mat4_rotation_euler(rx, ry, rz);
mat4 handedflip = mat4_new(1,0,0,0,
0,0,1,0,
0,1,0,0,
0,0,0,1);
rotation = mat4_mul_mat4(handedflip, rotation);
rotation = mat4_mul_mat4(rotation, handedflip);
rotation = mat4_transpose(rotation);
f->joint_rotations[id] = mat4_to_quat(rotation);
}
if (strstr(line, "end")) {
state = STATE_LOAD_EMPTY;
}
}
}
SDL_RWclose(file);
skeleton_delete(base);
return a;
}
font* font_load_file(char* filename) {
font* f = malloc(sizeof(font));
f->width = 0;
f->height = 0;
/* Encodes ASCII */
f->locations = malloc( sizeof(vec2) * 256 );
f->sizes = malloc( sizeof(vec2) * 256 );
f->offsets = malloc( sizeof(vec2) * 256 );
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Could not load file %s", filename);
}
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
int tex_id;
char tex_file[MAX_PATH];
if (sscanf(line, "page id=%i file=%s", &tex_id, tex_file) > 0) {
fpath location;
SDL_PathFileLocation(location.ptr, filename);
/* +1 to remove beginning quotation */
strcat(location.ptr, tex_file+1);
/* remove ending quotation */
location.ptr[strlen(location.ptr)-1] = '\0';
f->texture_map = asset_hndl_new_load(location);
}
int lineheight, base, scalew, scaleh;
int pages, packed, a_chan, r_chan, g_chan, b_chan;
if (sscanf(line, "common lineHeight=%i base=%i scaleW=%i scaleH=%i "
"pages=%i packed=%i alphaChnl=%i "
"redChnl=%i greenChnl=%i blueChnl=%i",
&lineheight, &base, &scalew, &scaleh,
&pages, &packed, &a_chan,
&r_chan, &g_chan, &b_chan) > 0) {
f->width = scalew;
f->height = scaleh;
}
int id, x, y, w, h, x_off, y_off, x_adv, page, chnl;
if (sscanf(line, "char id=%i x=%i y=%i width=%i height=%i "
"xoffset=%i yoffset=%i xadvance=%i page=%i chnl=%i",
&id, &x, &y, &w, &h, &x_off,
&y_off, &x_adv, &page, &chnl) > 0) {
f->locations[id] = vec2_new((float)x / f->width, (float)y / f->height);
f->sizes[id] = vec2_new((float)w / f->width, (float)h / f->height);
f->offsets[id] = vec2_new((float)x_off / f->width, (float)y_off / f->height);
}
}
SDL_RWclose(file);
return f;
}
material* mat_load_file(char* filename) {
SDL_RWops* file = SDL_RWFromFile(filename, "r");
if(file == NULL) {
error("Cannot load file %s", filename);
}
material* m = material_new();
material_entry* me = material_add_entry(m);
char line[1024];
while(SDL_RWreadline(file, line, 1024)) {
if (line[0] == '#') { continue; }
if (line[0] == '\r') { continue; }
if (line[0] == '\n') { continue; }
if (strstr(line, "submaterial")) {
/* Skip Empty Submaterials */
if (me->num_items == 0) {
continue;
} else {
me = material_add_entry(m);
continue;
}
}
char type[512]; char name[512]; char value[512];
int matches = sscanf(line, "%511s %511s = %511s", type, name, value);
if (matches != 3) continue;
material_item mi;
int type_id;
char* end;
float f0, f1, f2, f3;
if (strcmp(type, "shader") == 0) {
mi.as_asset = asset_hndl_new_load(P(value));
type_id = mat_item_shader;
} else if (strcmp(type, "texture") == 0) {
mi.as_asset = asset_hndl_new_load(P(value));
type_id = mat_item_texture;
} else if (strcmp(type, "int") == 0) {
mi.as_int = atoi(value);
type_id = mat_item_int;
} else if (strcmp(type, "float") == 0) {
mi.as_float = atof(value);
type_id = mat_item_float;
} else if (strcmp(type, "vec2") == 0) {
f0 = strtod(value, &end); f1 = strtod(end, NULL);
mi.as_vec2 = vec2_new(f0, f1);
type_id = mat_item_vec2;
} else if (strcmp(type, "vec3") == 0) {
f0 = strtod(value, &end); f1 = strtod(end, &end);
f2 = strtod(end, NULL);
mi.as_vec3 = vec3_new(f0, f1, f2);
type_id = mat_item_vec3;
} else if (strcmp(type, "vec4") == 0) {
f0 = strtod(value, &end); f1 = strtod(end, &end);
f2 = strtod(end, &end); f3 = strtod(end, NULL);
mi.as_vec4 = vec4_new(f0, f1, f2, f3);
type_id = mat_item_vec4;
} else {
error("Unknown material item type '%s'", type);
return NULL;
}
material_entry_add_item(me, name, type_id, mi);
}
SDL_RWclose(file);
material_generate_programs(m);
SDL_GL_CheckError();
return m;
}
level* level_load_file(char* filename) {
for(int i = 0; i < num_tile_types; i++) {
tile_counts[i] = 0;
}
level* l = malloc(sizeof(level));
l->num_tile_sets = num_tile_types;
l->tile_sets = malloc(sizeof(tile_set) * num_tile_types);
l->tile_map = calloc(sizeof(int), MAX_WIDTH * MAX_HEIGHT);
SDL_RWops* file = SDL_RWFromFile(filename, "r");
char line[MAX_WIDTH];
int y = 0;
int x = 0;
while(SDL_RWreadline(file, line, 1024)) {
for(x = 0; x < strlen(line); x++) {
char c = line[x];
int type = tile_for_char(c);
l->tile_map[x + y * MAX_WIDTH] = type;
tile_counts[type]++;
}
y++;
}
SDL_RWclose(file);
/* Start from 1, type 0 is none! */
for(int i = 1; i < num_tile_types; i++) {
int num_tiles = tile_counts[i];
float* position_data = malloc(sizeof(float) * 3 * 4 * num_tiles);
float* uv_data = malloc(sizeof(float) * 2 * 4 * num_tiles);
int pos_i = 0;
int uv_i = 0;
for(x = 0; x < MAX_WIDTH; x++)
for(y = 0; y < MAX_HEIGHT; y++) {
int type = l->tile_map[x + y * MAX_WIDTH];
if( type == i ) {
position_data[pos_i] = x * TILE_SIZE; pos_i++;
position_data[pos_i] = y * TILE_SIZE; pos_i++;
position_data[pos_i] = 0; pos_i++;
position_data[pos_i] = (x+1) * TILE_SIZE; pos_i++;
position_data[pos_i] = y * TILE_SIZE; pos_i++;
position_data[pos_i] = 0; pos_i++;
position_data[pos_i] = (x+1) * TILE_SIZE; pos_i++;
position_data[pos_i] = (y+1) * TILE_SIZE; pos_i++;
position_data[pos_i] = 0; pos_i++;
position_data[pos_i] = x * TILE_SIZE; pos_i++;
position_data[pos_i] = (y+1) * TILE_SIZE; pos_i++;
position_data[pos_i] = 0; pos_i++;
uv_data[uv_i] = 0; uv_i++;
uv_data[uv_i] = 0; uv_i++;
uv_data[uv_i] = 1; uv_i++;
uv_data[uv_i] = 0; uv_i++;
uv_data[uv_i] = 1; uv_i++;
uv_data[uv_i] = 1; uv_i++;
uv_data[uv_i] = 0; uv_i++;
uv_data[uv_i] = 1; uv_i++;
}
}
l->tile_sets[i].num_tiles = num_tiles;
glGenBuffers(1, &l->tile_sets[i].positions_buffer);
glGenBuffers(1, &l->tile_sets[i].texcoords_buffer);
glBindBuffer(GL_ARRAY_BUFFER, l->tile_sets[i].positions_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 3 * 4 * num_tiles, position_data, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, l->tile_sets[i].texcoords_buffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * 2 * 4 * num_tiles, uv_data, GL_STATIC_DRAW);
glBindBuffer(GL_ARRAY_BUFFER, 0);
free(position_data);
free(uv_data);
}
return l;
}