Net Yaroze
Index
Changing TMD colour values on
the fly.
The Net Yaroze is
the official Sony Hobbyist programmable Playstation.
Project: UN-NAMED.
Description: 2d scroller fighter using 3d objects in
C++.
This is far from complete but I thought I would put
some stuff up and to share some ideas that I hack out ........
So here it is (Current Versions -world v40 -obj v20).
Special Techniques.
Displays TMD objects with TOD animation.
( TOD is an animation file format that 3d4 (DOS)
supports using a plugin from the Yaroze dev page)
Reuses identical TMD saving memory, e.g. legs &
feet.
Changing TMD colour values on the fly.
Reuses identical TMD saving memory, e.g. legs &
feet. - The Object List
An array of GsDOBJ2 (I call it olist - object list ) is passed to the init
function for the obj_c.
The first number tells the size of the objects list
and how many GsDOBJ2 to create and link,
the
following numbers are used as references to link GsDOBJ2 to TMD data.
.e.g. TMD file has 4 3d objects (TMD ID's start from
0).
/************ TMD FILE *********
ID
0 FOOT
ID
1 LOWER LEG
ID
2 UPPER LEG
ID
3 WAIST
************ TMD FILE *********/
To save memory foot and leg parts can be reused
instead of being included in the TMD file redundantly.
the
object list looks like this ( GsDOBJ2 pointers are used after initialisation)
GsDOBJ2
*olist[]={
(GsDOBJ2 *) 7, // Number of GsDOBJ2 objects in
class but not it TMD, the TMD file only has 4 not 7.
(GsDOBJ2 *) 0, // GsDOBJ2 0 link to TMD ID 0 -
foot LEFT
(GsDOBJ2 *) 1, // GsDOBJ2 1 link to TMD ID 1 -
lower leg LEFT
(GsDOBJ2 *) 2, // GsDOBJ2 2 link to TMD ID 2 -
upper leg LEFT
(GsDOBJ2 *) 3, // GsDOBJ2 3 link to TMD ID 3 -
waist
(GsDOBJ2 *) 2, // GsDOBJ2 4 link to TMD ID 2 -
upper leg RIGHT
(GsDOBJ2 *)
1, // GsDOBJ2 5 link to TMD ID 1 - lower leg RIGHT
(GsDOBJ2 *) 0 // GsDOBJ2 6 link to TMD ID 0 - foot RIGHT
}
It links the TMD data to GsDOBJ2 in an array -
OBJ_DATA_m .
Then instead of using the OBJ_DATA_m array to
reference the objects the olist is used.
for(int
i = 0; i < OBJ_nobj_m; i++)
olist[i] = &OBJ_DATA_m[
(u_long)( olist[ i+1] ) ];
//converts to list to pointers - the +1 is to skip the first number
Changing
TMD colour values on the fly.
Each obj_c manipulates a type of tmd object and
changes its appearance according to the objController_c.
All TMD's colour values that are white can be change
on the fly, giving the appearance of many TMD objs
eg white legs and waist ( see pictures- only 2 TMD
files used - top and bottom).
Obj_c stores the memory address of the TMD colour value (that equals
white) in a array called clist_m.
Before displaying the TMD the class changes the
values of the dereferenced pointers in the list with a given colour.
To get a colour list going I just give it the size of
the TMD, it searches from the
start of the TMD to the end, looking for any
0x00FFFFFF.
for(int
i=0; i<tmdSize; i++)
{
if( *tmd == 0x00FFFFFF)
{
clist_m[i] = (colourTMD_t *)tmd;
}
tmd++;
}
objController_c
The class controls a person (I should have called it person_c or
something....)..
A person is spilt into two, top (head , chest, upper arms and lower arms) and bottom
(waist, upper legs and lower legs).
Each part has its own TMD & TOD data (see obj_c).
here is my init function
init(
obj_c *top_obj, // pointer to the top obj
obj_c *bot_obj, // pointer to the bottom obj
// top colour values
u_char tr,
u_char tg,
u_char tb,
// bottom colour values
u_char br,
u_char bg,
u_char bb
);
This class controls the a person's top and bottom-
TMD colour.
TOD Action (run, jump, kick etc) and Frame.
and the
person's life value, coordinate,
rotation, speed, name etc.
I will rename this class too.
NOT FINISHED
world_c
Dynamic TMD objects.
Changing TMD colour values on the fly.
Dynamic TMD objects.
The world so far only uses flat coloured and textured
quads with no lights.
The world is split into three sections - the floor,
wall and background.
the background is one big flat textured starting at
UV 32 0 to 69 255 in tpage 1
Changing TMD colour values on the fly.
This is the all of the textures used in the world (so
far).
All textures have been taken on a GB camera (2bit
4colours) saved as one large 4bit 256 x
252 tim.
each cell (if textured) has it's own CBA (clut for
textures).
The original CLUT is loaded under the image and 15 others are added after it
to fill
the the rest of the tpage.
The red and green strips are my empty colours (easier
to debug).
The world also moves the people and checks that its a
valid move.
Textured heads
Me on the Game boy
Staring Jim!
The world and the 8 people
max is 28 so far, all walking randomly!
half the world with the original CBA
Close up.
Normal view.
