LynxJam2023 - day 2

Today is the real start.

After SpritesMind logo screen yesterday, I added a blank title screen and the main game screen.

With this game, I planned to play with the strech/tilt/.... capacities of sprite which I didn't understand for Hungry Monsters.

I made a big mistake at first because I used

SCB_REHVS floor_right = {
 BPP_4 | TYPE_NONCOLL,
 REHV | REUSEPAL,
 0x01,
 &D_small_side_left,
 A_wall,
 80 , 102-2*96/3,
 SCALE_x1, 0x00AB,
 0x0024 };

You don't see it  ?

Well I thought the right structure was enough but in fact, you also need to be sure sprctrl1 (2nd item) is in sync.
So here I had to change REHV to REHVS 

so, the same thing but fixed 

SCB_REHVS floor_right = {
 BPP_4 | TYPE_NONCOLL,
 REHVS | REUSEPAL,
 0x01,
 &D_small_side_left,
 A_wall,
 80 , 102-2*96/3,
 SCALE_x1, 0x00AB,
 0x0024
};

Note : the TYPE_xx is probably wrong, it's not (yet) clear enought for me the difference between TYPE_NONCOLL, TYPE_NORMAL, TYPE_BACKGROUND.  I read and re read tutorial about it but it's still not clear :(

The way Lynx draws sprites using linked list is perfect to achieve the painter algorithm, needed to draw a 3D Dungeon

At last, I could use my favorite animated gif :   

I first tried to draw my dungeon using this order but it wasn't good enough.
So I drew it this way :

- floor (with stretch!!)
- level D vertical wall (2 walls + 2 flippped walls)
- level C horizontal wall (3 walls)
- level C vertical wall (2 walls + 2 flippped walls)
- level B horizontal wall (3 walls)
- level B vertical wall (1 wall + 1 flippped wall)
- level A horizontal wall (3 walls)
- level A vertical wall (1 wall + 1 flippped wall)

or  

with 0 = floor

and it works !!!

At last, after all these years, I draw a 3D dungeon on a video game system !!!

While the painter algorithm is working, I hadn't enough time left to add controls to move inside the maze and to update dummy assets by the required ones : I can't wait for day 3 !