Houses - substitute, override and other properties

[TadeuszD]

maybe this helps then: http://newgrf-specs.tt-wiki.net/wiki/Gl ... 95.2C96.29

Thanks! But these variables are not implemented in OTTD. Additionally, I afraid that increasing offsets for all tiles on the map (not only the building bottoms) will decrease the overall game performance.

And what about animations? Building animations works fine without any glitches. I can control two animation frames instead of switching between two spritelayouts (normal and snowy). Is this idea OK?

[Eddi]

i don't see anything wrong with that approach.

[TadeuszD]

Hi, I have new question...
Can I use random_switch in case of house not created (not placed on the map) yet?
For example, I want to modify house probability when certain conditions are met.
Will this code work?

Code: Select all

random_switch(FEAT_HOUSES, switch_decrease_probability) {
    5: return 0;
    3: return 1;   // decreases construction probability to 3/8 of original probability
}
switch( FEAT_HOUSE, SELF, switch_construction_check, [condition]) {
    1: return switch_decrease_probability;
    return 1;    // house is constructed with original probaility
}

item(FEAT_HOUSES, my_house, ...) {
    probability:    1;  // original probability
    ...
    graphics {
        construction_check:  return switch_construction_check;
    }
}

[Eddi]

probably not. none of the variables are initialized before construction, you can only use global variables or extra_callback_info and stuff like that

[frosch]

Yes, "construction_check" has already access to the random bits, which the house will get if construction is allowed.

[TadeuszD]

Yes, "construction_check" has already access to the random bits.

Thanks! It looks like it works.
Using this method I can create local residential districts, constructed using "normalized" houses.

[TadeuszD]

Hi, again...
I encountered the problem with recolour_mode: RECOLOUR_REMAP statement in house spritelayout.
If I use:

Code: Select all

spritelayout slay_building_prl6 {
...
    building {
        ...
        recolour_mode: RECOLOUR_REMAP;
        palette:       PALETTE_USE_DEFAULT;
    }
}

...every is OK.
But if I define my own recolour sprite and use it in spritelayout:

Code: Select all

recolour_house_palette = reserve_sprites(1);
replace(recolour_house_palette) {
    recolour_sprite {
        0x48: 0x58;
        0x49: 0x59;
        0x4A: 0x5A;
        0x4B: 0x5B;
        }
}

spritelayout slay_building_prl6 {
...
    building {
        ...
        recolour_mode: RECOLOUR_REMAP;
        palette:       recolour_house_palette;
    }
}

...the house which uses this spritelayout doesn't apper in the game at all.
What is wrong?