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/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */
#include <string.h>
#include <stdio.h>
#include <engine/system.h>
#include <engine/interface.h>
#include "cl_skin.h"
#include "../math.h"
enum
{
MAX_SKINS=256,
};
static skin skins[MAX_SKINS] = {{0}};
static int num_skins = 0;
static void skinscan(const char *name, int is_dir, void *user)
{
int l = strlen(name);
if(l < 4 || is_dir || num_skins == MAX_SKINS)
return;
if(strcmp(name+l-4, ".png") != 0)
return;
char buf[512];
sprintf(buf, "data/skins/%s", name);
IMAGE_INFO info;
if(!gfx_load_png(&info, buf))
{
dbg_msg("game", "failed to load skin from %s", name);
return;
}
skins[num_skins].org_texture = gfx_load_texture_raw(info.width, info.height, info.format, info.data);
// create colorless version
unsigned char *d = (unsigned char *)info.data;
int step = info.format == IMG_RGBA ? 4 : 3;
for(int i = 0; i < info.width*info.height; i++)
{
int v = (d[i*step]+d[i*step+1]+d[i*step+2])/3;
d[i*step] = v;
d[i*step+1] = v;
d[i*step+2] = v;
}
skins[num_skins].color_texture = gfx_load_texture_raw(info.width, info.height, info.format, info.data);
mem_free(info.data);
// set skin data
strncpy(skins[num_skins].name, name, min((int)sizeof(skins[num_skins].name),l-4));
dbg_msg("game", "load skin %s", skins[num_skins].name);
num_skins++;
}
void skin_init()
{
// load skins
fs_listdir("data/skins", skinscan, 0);
}
int skin_num()
{
return num_skins;
}
const skin *skin_get(int index)
{
return &skins[index%num_skins];
}
int skin_find(const char *name)
{
for(int i = 0; i < num_skins; i++)
{
if(strcmp(skins[i].name, name) == 0)
return i;
}
return -1;
}
// these converter functions were nicked from some random internet pages
static float hue_to_rgb(float v1, float v2, float h)
{
if(h < 0) h += 1;
if(h > 1) h -= 1;
if((6 * h) < 1) return v1 + ( v2 - v1 ) * 6 * h;
if((2 * h) < 1) return v2;
if((3 * h) < 2) return v1 + ( v2 - v1 ) * ((2.0f/3.0f) - h) * 6;
return v1;
}
vec3 hsl_to_rgb(vec3 in)
{
float v1, v2;
vec3 out;
if(in.s == 0)
{
out.r = in.l;
out.g = in.l;
out.b = in.l;
}
else
{
if(in.l < 0.5f)
v2 = in.l * (1 + in.s);
else
v2 = (in.l+in.s) - (in.s*in.l);
v1 = 2 * in.l - v2;
out.r = hue_to_rgb(v1, v2, in.h + (1.0f/3.0f));
out.g = hue_to_rgb(v1, v2, in.h);
out.b = hue_to_rgb(v1, v2, in.h - (1.0f/3.0f));
}
return out;
}
vec4 skin_get_color(int v)
{
vec3 r = hsl_to_rgb(vec3((v>>16)/255.0f, ((v>>8)&0xff)/255.0f, 0.5f+(v&0xff)/255.0f*0.5f));
return vec4(r.r, r.g, r.b, 1.0f);
}
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