Pokémon Mystery Dungeon: Red Rescue Team:Pokémon Graphics:Overworld Animations

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Pokémon Graphics: Overworld Animations
Game Pokémon Mystery Dungeon: Red Rescue Team
Start Address 0x0511F30
End Address 0x167FE77
# of Entries 423
Entry Length varies
Total Length 18276168 bytes (0x116DF48)
Back to the ROM map

There are 423 SIRO files pointed to by the Pokémon Graphics Pointer Table. Each one represents a different Pokemon graphics file. The structure of these individual files is as follows.

Header

  • Note - all pointers are stored in little-endian format.
Address   Size     Description
--------  ----   ----------------
0000      0004    SIRO Header - Spells out SIRO and begins file.
0004      0004    Pointer to footer - Points to main data structure in each Pokemon

Animation Data Before Sprites

There are two sections before the sprites begin.

Animation Frame

Comes in 0x14 byte increments which each represent a frame of the animation.

Address   Size     Description
--------  ----   ----------------
0000      0002    The index of the sprite to be displayed.
0002      0002    Does Palette Effects - Use unknown
Obj Attribute 0 {
0004      0001    Vertical Displacement (Signed Short)
0005      0001    Tile Byte - Tells data about the tile
                      bit  8      : Rotation/Scaling Flag
                      bit  9      : When bit 8 set to 1: Double-Size Flag (0=Normal, 1=Double)
                                    When bit 8 set to 0: OBJ Disable          (0=Normal, 1=Not displayed)
                      bit  10 ~ 11 : OBJ Mode  (00=Normal, 01=Semi-Transparent, 10=OBJ Window, 11=Prohibited)
                      bit  12      : Mosaic (0=Off, 1=On)
                      bit  13      : Color Mode (0=16/16, 1=256/1)
                      bit  14 ~ 15 : OBJ Shape (00=Square, 01=Horizontal, 10=Vertical, 11=Prohibited)
}
Obj Attribute 1 {
0006      0002    bit  0 ~  8  : Y Coordinate
                  When Object Attribute 0:Rotation/Scaling Flag Set
                  bit  9 ~ 13  : Rotation Scaling Parameter Selection

                  When Object Attribute 0:Rotation/Scaling Flag NOT Set
                  bit  9 ~ 11  : Unused
                  bit  12      : Horizontal flip bit
                  bit  13      : Vertical flip bit

                  bit  14 ~ 15 : OBJ Size (0..3, depends on OBJ Shape, see address 0005)
                      Size 	Square 	Horizontal 	Vertical
                      0 	8x8 	16x8 	        8x16
                      1 	16x16 	32x8 	        8x32
                      2 	32x32 	32x16 	        16x32
                      3 	64x64 	64x32 	        32x64 
}
Obj Attribute 2 {
0008      0002    bit  0 ~  9 : Tile Number
                  bit 10 ~ 11 : Priority Relative to BG (Usually 11)
                  bit 12 ~ 15 : Palette number (May different than the Pokemon's palette number)
}
000A      000A    Allows VRAM to be cleared. Usually all FFs

Obj Attributes are documented at GBATek.

Animation Timing

The next section deals with animation timing in the following format:

Total Size: 0x0C

Address   Size     Description
--------  ----   ----------------
0000      0002   Number of frames to display sprite.
0002      0002   Index of Animation Frame to be displayed.
0004      0002   Horizontal Displacement    -Signed Short
0006      0002   Vertical Displacement      -Signed Short
0008      0002   Shadow Horizontal Displacement    -Signed Short
000A      0002   Shadow Vertical Displacement      -Signed Short

Overworld Sprites

Every Sprite has data associated with it.

The sprite data pointers in the data after the sprites point to each individual sprite's data.

When the sprite data pointer points at the individual sprite pointer, this is the format:

Address   Size     Description
--------  ----   ----------------
0000      0004   Pointer to individual sprite
0004      0002   Number of bytes to read (little endian)

When the sprite pointer points at 4 bytes with the value 00, this is the format:

Address   Size     Description
--------  ----   ----------------
{
  0000      0004   0x00
  0004      0004   Amount of blank space written before sub sprite.
  0008      0004   Pointer to individual sprite
  000C      0004   Number of bytes to be read (little endian)
}
Repeats until every sub sprite has been pointed to.

After every sub sprite has been pointed to, sometimes there is an additional blank space offset without a sprite attached:

Address   Size     Description
--------  ----   ----------------
{
  0000      0004   0x00
  0004      0004   Amount of blank space written before sub sprite.
  0008      0008   0x00
}
Visual representation of sprite layout.

Data After Sprites

Following the sprites are six sections with different information:

  1. Table of pointers to the animation data.
  2. Body Animation Displacement
  3. Pointers to directional animation timing data.
  4. Pointers to (#3) each set of directional animations
  5. Pointers to Sprite Data
  6. The Footer

Animation Frame Data Pointer Table

Points to animation frame data.

Body Animation Displacement

Indicate each frame's Pokémon's head / left side / right side / body location, it's used by moves animation.

Total Size: 0x08

Address   Size     Description
--------  ----   ----------------
0000      0001   Horizontal Displacement for Pokémon's head         -Signed Byte
0001      0001   Vertical   Displacement for Pokémon's head         -Signed Byte
0002      0001   Horizontal Displacement for Pokémon's left side?   -Signed Byte
0003      0001   Vertical   Displacement for Pokémon's left side?   -Signed Byte
0004      0001   Horizontal Displacement for Pokémon's right side?  -Signed Byte
0005      0001   Vertical   Displacement for Pokémon's right side?  -Signed Byte
0006      0001   Horizontal Displacement for Pokémon's body         -Signed Byte
0007      0001   Vertical   Displacement for Pokémon's body         -Signed Byte

Directional Animation Timing Pointer Table

A repeating set of little-endian pointers that will point to an animation for any direction. For example: each direction of the walking animation would show up here.

Index Direction Pointed to
----- --------------------
0x00:  S, SE, E, NE,
0x10:  N, NW, W, SW

Pointer to Directional Table

Points to each set of pointers from the previous section.

Pointers to Sprite Data

Pointers to the data in between each sprite.

Footer

The header points to another set of pointers starting here and ending at the next SIRO file.

Address   Size     Description
--------  ----   ----------------
0000      0004   Pointer to Animation Frame Table
0004      0004   Pointer to Directional Animations - Different animations can be chosen based upon direction.
0008      0004   Body Animation Displacement
000C      0004   Sprite Data Pointers
0010      0004   Pointer to Unknown Data
0014      0004   SIRO Header of next Pokemon