Space station docking animations

[Luomu]

Waypoints etc.

Perhaps: export special animation file Also consider: temporarily attach ship geometry to an animated node when docking surface has been reached (attaching things to each other should have been done at Body level but meh)

[Luomu]

I am going to completely ignore space stations until newmodel is otherwise working with the game.

[Luomu]

Idea: separate the docking sequence specific lua from LMR and use that with new models as well, in SpaceStation.

I don't feel like hacking in specific collision surfaces (LMR uses separate collision flags for landing spots 1-4). Could define them as points instead.

[Luomu]

Suggestions:

• Keep using special collision surfaces for landing pads. Use named quads ("landing_surface_1") to import the surfaces.
• Use point/radius docking detection for space stations, where you usually go "forward" to dock. See http://spacesimcentral.com/forum/topic/3097-docking-error-just-how-playable-is-the-alpha/ for how the surfaces confuse the player

[Luomu]

I have separated station definitions in Luomu/separate-station-defs, a data/stations/some_station.lua looks like this:

define_surface_station {
    model = 'ground_station_4',
    num_docking_ports = 4,
    dock_anim_stage_duration = { DOCKING_TIMEOUT_SECONDS, 4.0},
    undock_anim_stage_duration = { 0 },
    ship_dock_anim = function(port, stage, t, from, ship_aabb)
        local port_pos = { v(-150,50,0), v(150,50,0), v(0,50,-150), v(0,50,150) }
        if stage == 2 then
            return { vlerp(t, from, port_pos[port] - v(0,ship_aabb.min.y,0)), v(1,0,0), v(0,1,0) }
        end
    end,
    ship_approach_waypoints = function(port, stage)
        local port_pos = { v(-150,50,0), v(150,50,0), v(0,50,-150), v(0,50,150) }
        if stage == 1 then
            return { v(port_pos[port].x, port_pos[port].y+1000, port_pos[port].z), v(1,0,0), v(0,1,0) }
        elseif stage == 2 then
            return { v(port_pos[port].x, port_pos[port].y, port_pos[port].z), v(1,0,0), v(0,1,0) }
        end
    end
}

Now it's almost possible to create a (unanimated) station in new-model.

Not going to create a PR yet since the game does not currently need this. @robn you might be interested to know, @fluffyfreak too since you are doing things with stations.

[robn]

Yeah probably not worth doing yet, but definitely interesting. Nice work.

[fluffyfreak]

I might pull this into the work that I'm playing with on issue 16.

I've also just committed some rather random work in progress stuff on my FluffyFreak/station branch BUT BE WARNED it's really rough and I'm mostly just hacking on it in the 15 to 60 mins I get on an evening so won't be what actually gets turned into a PR one day, but will be where if figure out what will go into a branch that does :)

[Luomu]

Added support for collision surfaces (bays 1-4), so it's now possible to create an unanimated station or a landing pad.