roadport.nml

grf {
   grfid:                  "BBRR";
   name:                   string(STR_NAME);
   desc:                   string(STR_DESC);
   //url:                    string(STR_);
   version:                1;
   min_compatible_version: 1;
}

spritelayout sl_grass {
    ground {
        sprite: GROUNDSPRITE_NORMAL;
    }
    childsprite {
        sprite: GROUNDSPRITE_SNOW;
        always_draw: 1;
        hide_sprite: 1-(terrain_type == TILETYPE_SNOW);
    }
}

item (FEAT_AIRPORTTILES, item_grass, 0) {
    property {
        substitute: 0;
    }
    graphics {
        default: sl_grass;
        foundations: CB_RESULT_FOUNDATIONS;
    }
}

spritelayout sl_road {
    ground {
        sprite: 1314;
    }
}

item (FEAT_AIRPORTTILES, item_road, 1) {
    property {
        substitute: 0;
    }
    graphics {
        default: sl_road;
        foundations: CB_RESULT_FOUNDATIONS;
    }
}

spritelayout sl_paved {
    ground {
        sprite: 2634;
    }
    childsprite {
        sprite: GROUNDSPRITE_SNOW;
        always_draw: 1;
        hide_sprite: 1-(terrain_type == TILETYPE_SNOW);
    }
}

item (FEAT_AIRPORTTILES, item_paved, 2) {
    property {
        substitute: 0;
    }
    graphics {
        default: sl_paved;
        foundations: CB_RESULT_FOUNDATIONS;
    }
}

tilelayout tl_road_runway_north {
    rotation: DIRECTION_NORTH;
    3, 1: item_grass;
    0, 2: item_paved;
    1, 2: item_paved;
    2, 2: item_paved;
    3, 2: item_paved;
}

tilelayout tl_road_runway_east {
    rotation: DIRECTION_EAST;
    1, 0: item_grass;
    2, 0: item_paved;
    2, 1: item_paved;
    2, 2: item_paved;
    2, 3: item_paved;
}

//requiered for default airport to stay

item (FEAT_AIRPORTS, item_airport, 0) {
    property {
        override: 0;
    }
}

spriteset (ss_ne, "gfx/NE.png") {
    [0, 0, 192, 95, 0, 0]
}

spriteset (ss_se, "gfx/SE.png") {
    [0, 0, 192, 95, 0, 0]
}

switch (FEAT_AIRPORTS, SELF, sw_layout_preview, layout) {
    1: ss_se;
    default: ss_ne;
}

switch (FEAT_AIRPORTS, SELF, sw_layout_name, layout) {
    1: string(STR_LAYOUT_EAST);
    default: string(STR_LAYOUT_NORTH);
}

item (FEAT_AIRPORTS, item_road_runway, 1) {
    property {
        override: 0;
        name: string(STR_NAME_AIRPORT);
        layouts: [tl_road_runway_north, tl_road_runway_east];
        ttd_airport_type: 0;	
        catchment_area: 4;
        noise_level: 3;
        maintenance_cost: 5;
    }
    graphics {
        layout_name: sw_layout_name;
        additional_text: string(STR_ADDITIONAL_TEXT);
        default: sw_layout_preview;
    }
}