SpritesMind.Net

Good day

I was using VDP_setMapEx() with h.scroll with success, but actually I'm trying to do a different thing and not sure what's happening.

I use VDP_drawImageEx() to draw a background image in PLAN_B (from a PNG file). This one with castle:

fase01_01.png

This is ok.

Now I want to draw 2 ...

New lesson:

Lesson 9 - Scrolling planes (3) Beyond 512px

Thanks all the people in this post that help me so much
( cloudstrifer, Sik, hotrodx, Chilly Willy ).

Hi again folks

Finally it's working! I just change the code a bit and works perfectly, only scrolling in one direction, that means pressing DPAD right it's ok, scroll works and the image is showing complete :D
Remember, I'm working with a 1024x224px PNG file.

But not sure why moving in the other ...

New lesson

<<NEW>>
Lesson 09 - Simple scroll (2): Line scroll

This is working but not for column-tile 127, not sure why but tile 127 are being painted with column-tile 63.
Just wait for moving 8 pixels to update tile, so it's painted out of "TV zone"




[...]
s16 offset=512;
s16 offsetTILES = 0;
s16 offset_old = offset;

while(TRUE)
{
offsetTILES ...

Thanks again Chilly Willy

Now it's like this

[...]
VDP_drawImageEx(PLAN_B, &bgd_image, TILE_ATTR_FULL(PAL2, FALSE, FALSE, FALSE, ind), 0, 0, FALSE, TRUE);
ind += bgd_image.tileset->numTile;
VDP_setScrollingMode(HSCROLL_PLANE ,VSCROLL_PLANE);

s16 offset=512; //PIXELS from 0 to 1023px
s16 ...

Thanks Chilly Willy, changed with

offsetTILES = (offset>>3) % 128; //offset=0..1023 then offsetTILES=0..127

Anyway, I can see 1st tile-column (left part of visible tiles) updating.

I think I have to update in another place but not sure why, as 1st column dissapearing at left part (tile column 0 ...

I'm fighting with scroll code again, it's working but there is a small problem

320x224px, horizontal scroll from right to left, using an image with size 1024x224px

The problem is that I can see when tiles are being updated, just when left tile colum is going to dissapear at the left part, it's ...

Nice project, can't wait to see bosses

Little update

Lesson 00 - SGDK + CodeBlocks (instalation)
Lesson 01 - Hello World
Lesson 01 - Clone and Mistakes
Lesson 02 - Controls
Lesson 03 - Tiles and Plans
Lesson 03 - Tiles and Plans (II)
Lesson 04 - Tiles from Images
Lesson 04 - Tiles from Images (II)
Lesson 04 - Tiles from Images (III ...

If scrolling is still troubling you, I've altered the SGDK's "Sprite" example to do basic scrolling. (see attachment, scrolling.zip)

Made the playfield wider (1280px wide) to see the effect. Also, removed the BEST compression for the tilemaps, as VDP_setMapEx is slower when decompressing data ...

Still having problems with scroll. Let's work simple. Horizontal scroll only (from left to right). 320x224px. Only 1 plane. No sprites.
I'm using sonic background from SGDK sample folder but I add px position (see background's bottom)

scroll_v3.png

As you can see this image have 640x224px, then ...

Hi there, here testing sprite collision flag also :mrgreen:

It's working, but not sure why... this is my code


[..] //include and all these stuff

int a = 0;

main()
{

[...] //add sprites, pals,... and these things

while(1)
{
handleInput();
check_collision();
SPR_update();
VDP_waitVSync ...

Awesome, best explanation ever!!

Thanks a lot, I will try again, have a nice day

Hi again, I'm afraid I saw lot of threads but no success at all.

Ok so by default with SGDK we have 512 pixels wide, that is, 64 tiles (from 0 to 63).

Question. bga.png is 640px wide. Where are the last 640-512=128px (16 tiles)? (from 64 to 79)
Are they still in memory somewhere?

I tried to use ...