IconLoader.h

// For icon file saving/loading:

#define ICON_FILE_VERSION 0x10000

struct IconFileVersionHeader
{
    unsigned int version;
};

#define ICON_MODEL_ATTR_IIP  0x01 // Shading method. 0 = flat, 1 = gouraud.
#define ICON_MODEL_ATTR_ANTI 0x02 // Anti-aliasing on/off.
#define ICON_MODEL_ATTR_TEX  0x04 // Texture pasting on/off.
#define ICON_MODEL_ATTR_RLE  0x08 // Texture compression flag. 0 = Uncompressed, 1 = compressed.

struct IconFileModelSectionHeader
{
    unsigned int nbsp;   // Number of key shapes (1, 4, 6 or 8)
    unsigned int attrib; // Model attributes
    float bface;         // Back-face clipping standard value (Normally 1.0).
    unsigned int nbvtx;  // Number of vertices (Must be a multiple of 3).
};

// The following structure is then repeated nbtx times.
/* struct IconFileModelVertex
{
    unsigned short int vtx[4 * nbsp]; // 3x6:10 fixed-point elements for each point of every coordinate, with 2-byte padding.
    unsigned short int normal[4];     // 3x4:12 fixed-point elements for each point, with 2-byte padding.
    unsigned short int st[2];         // Texture coordinates: 2x4:12 fixed-point elements.
    unsigned char color[4];           // Vertex color:    1 byte for R, G, B and A. A is ignored.
}; */

struct IconFileModelAnimSectionHeader
{
    unsigned int nbseq; // Number of sequences (Only 1 is currently supported).
};

// The following structure is repeated nbseq times.
struct IconFileModelAnimSequence
{
    unsigned int nbframe; // Frame length.
    float speed;          // Play speed magnification.
    unsigned int offset;  // Play offset (frame number).
    unsigned int nbksp;   // Number of shapes to be used (maximum 8).
};

struct IconFileModelAnimFrameKeyData
{
    float frame;  // Frame number of key frame.
    float weight; // Shape weight.
};

// The following structure is repeated nbksp times
struct IconFileModelAnimFrame
{
    unsigned int kspid;                          // Shape number.
    unsigned int nbkf;                           // Number of key frames (maximum 10).
    // struct IconFileModelAnimFrameKeyData keys[]; // Key data goes here in the file.
};

/* Texture data begins here. The content depends on whether it's compressed or not.
If it's compressed:
    unsigned int size -> size of compressed data.
    <data>    -> RLE-encoded 128x128 PSMCT16 image, compressed in 2-byte units.

If is's uncompressed:
    <data>    -> Uncompressed, raw 128x128 PSMCT16 image.
*/

/**************************/
// For icon storage in RAM.
struct Vector
{
    float x, y, z;
};

struct IconModelVertex
{
    struct Vector *vtx; // Repeated nbsp times
    float normal[3];
    float st[2];
    unsigned char color[4];
};

struct IconModelAnimFrame
{
    unsigned int kspid;                         // Shape number.
    unsigned int nbkf;                          // Number of key frames (maximum 10).
    struct IconFileModelAnimFrameKeyData *keys; // Key data.
};

struct IconModelAnimSequence
{
    unsigned int nbframe; // Frame length.
    float speed;          // Play speed magnification.
    unsigned int offset;  // Play offset (frame number).
    unsigned int nbksp;   // Number of shapes to be used (maximum 8).
    struct IconModelAnimFrame *frames;
};

struct PS2IconModel
{
    struct IconFileModelSectionHeader ModelSectionHeader;
    struct IconModelVertex *ModelVertices;
    struct IconFileModelAnimSectionHeader ModelAnimSectionHeader;
    struct IconModelAnimSequence *ModelAnimSequences;
    void *texture;
};

/**************************/
// Function prototypes.
int LoadPS2IconModel(const char *path, struct PS2IconModel *IconModel);
void UnloadPS2IconModel(struct PS2IconModel *IconModel);