Terror from the Deep support

[AndO3131]

Why this craft has underwater "bluish" tint for shades AT terrain level?

Good catch. I used wrong palette (one of those underwater).

[Volutar]

I believe we could "recode" tftd sprites into ufo1 palette by closest color algorithm, and use it with xcom1 palette...
But jow did you make them together?

[AndO3131]

I believe we could "recode" tftd sprites into ufo1 palette by closest color algorithm, and use it with xcom1 palette...

Someone could try it, but I think it would require much more work (besides, I don't know, how to do it ).

Initially, whole battlescape is shaded to one big surface, then drawn to screen. Instead of one big surface, I used small tile to blit shade of small map parts to it and then blit this small tile on proper place in battlescape. This way every part of map can have different palette. Remember, It's not working perfectly yet.

[kkmic]

How is your algorithm, performance-wise?

[xracer]

those look really nice

[SupSuper]

If you are just blitting surfaces onto other surfaces (remember the screen is still a surface), it is likely SDL is doing all the converting for you behind the scenes. If you try to blit 8bpp surfaces with different palettes, SDL will automatically do "nearest color" matching between the palettes. If you try to blit 8bpp with 24bpp, it will automatically convert between bit-depths as appropriate. If the screen is 24bpp, you would get an apparently "flawless" result. This all has performance costs, though they might not be noticable on modern systems.

[AndO3131]

I'm coding on Linux, and as @Supsuper said, I didn't notice any performance issues yet. I haven't tried to compile on Windows.

If you try to blit 8bpp surfaces with different palettes, SDL will automatically do "nearest color" matching between the palettes.

Result's of this are here.

[pmprog]

I'm coding on Linux, and as @Supsuper said, I didn't notice any performance issues yet. I haven't tried to compile on Windows.

I don't think you'll see much in the way of performance changes on Windows either. I think where you will probably see it (if anyway) are on the embedded devices, like Android devices, Cannoo, Pandora, GP32x, GCWZero etc.

[Volutar]

SDL is making 8bpp->[palette]->RGB conversion for each pixel anyways. So at 24bit surface/display mode that wouldn't make any performance difference at all.

[Yankes]

Result's of this are here.

AndO3131 this dont look like "nearest color". It more probably this use my blit function (aka simple copying palette index without bothering with different palettes) not SDL ones.

[AndO3131]

There's some new progress. Looks like battle terrain is not a problem anymore (only thing left is putting them in ruleset). Next thing will be items.

[localSol]

Fantastic Work!
 August 1999 - This just in, reports of the rumo(u)red organization called X-COM seen flying an unknown type of flying craft into the ocean! Ocean liner personnel who witnessed the incident say the craft didn't return out of the water during the few hours that they passed near. What could this mean? Bug your local representative and keep off the beaches!

[Volutar]

Technology used for bubbles trail requires for "postprocess" pixel manipulation. If this "mixed palette" concept will be used, I'm not really sure this will work. Because for working it will require pick color index of pixel, modify, put pixel index. For every bubble trail pixel, and often even number of times.
I wouldn't take this mixed mode at all.

[AndO3131]

Bubbles coming from terrain do work - I think they are included in map files. This is an example ruleset entry for terrains, based on ufopaedia.org found here - bubbles are in UFOBITS section:

==========
  - name: SEABED
    mapDataSets:
      - BLANKS
      - SAND
      - ROCKS
      - WEEDS
      - DEBRIS
      - UFOBITS
    largeBlockLimit: 3
    textures: [13]
    mapBlocks:
      - name: SEABED00
        width: 10
        length: 10
        type: 1
        subType: 0
        maxCount: 3
      - name: SEABED01
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED02
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED03
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED04
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED05
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED06
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED07
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED08
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED09
        width: 10
        length: 10
        maxCount: 3
      - name: SEABED10
        width: 20
        length: 20
      - name: SEABED11
        width: 20
        length: 20
      - name: SEABED12
        width: 20
        length: 20
==========

Bubbles coming from operatives of course don't work, but I think they are hidden somewhere in terror files, just like other animation frames.

[AndO3131]

Some more info. @Volutar, you can see bubbles in first screenshot.

Weapons and grenades work, but I don't have projectiles. How did you guys get projectiles currently in use by the game (those in Resources/BulletSprites)?