New Scripting Techniques & Lua Upgrade

[SolarPortal]

Edit: These posts were moved from another topic as i went off track in the wrong topic.. lol... naughty dev!

API will need a major overhaul as we have upgraded lua 5.3.5 and vector2, vector3, vector4, quat libraries are now proper objects.
This means simple math like so is possible:

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   bounds = aabb.new( vector3.new(10.5,10.7,10.9), vector3.new(21,100,21));
   bounds2 = aabb.new( vector3.new(0.5,0.7,0.9), vector3.new(2,10,1));
   
   p1 = bounds:getCenter();      
   p2 = bounds2:getCenter();      
   
   _d = p2 - p1; -- calculate direction
   _d:normalise(); -- normalise the vector3 internally.. note the use of ":"(colon) to have self automatically passed through.
   
   _d = -_d;   -- unary minus to flip the vector. same as _d = _d * vector3.new(-1,-1,-1)
   lprint("direction: "..tostring(_d));
   _d = vector3.ZERO();
   _d.x()


oh and of course we have added some new libraries also like the aabb library and a query library.
Because of lua 5.3.5 it also means we now have access to the bitwise and debug libraries of lua too..

Lots and lots of changes.. there will be porting notes.

[epsilonion]

Oh my a lot has changed since last year lol..
You have been busy cramming all these changes in

[SolarPortal]

just playing around creating a sceneEntity object in lua and this is a simple script to get position, add to the position and print the position. Just playing around and may not make it into final build

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   sEntity = sceneEntity.get(4);
   pos = sEntity:getPosition() + vec3(1,1,1);
   sEntity:setPosition(pos);

   -- or if you want to multiply the position by a full transform of another using matrix4
   pos = sEntity2:getFullTransform():inverse()  * pos; -- full transform is a full matrix4 multiplied by a vector3 object.
   sEntity:setPosition(pos);


The sEntity object is the entity data itself so no need to hold or pass ids.

[SolarPortal]

Here is another cool example of the new system for volume querying with the entire scene's entities.

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function collectEntitiesWithinVolumes()
   --local volumeIDs = query.findEntities("desc", "navvolume");
   local volumeIDs = query.findEntities("action", "Navmesh Volume");

   for k, v in pairs(volumeIDs) do
      local volumeID = v;
      lprint("volumeID: "..volumeID);
      
      local volumeAabb = entity.getWorldAabb(volumeID);
      local sceneEntityIDs = query.findEntities("aabb_intersection", volumeAabb);
      --local sceneEntityIDs = query.findEntities("aabb_contains", volumeAabb);
   
      for idx, id in pairs(sceneEntityIDs) do
         lprint("seid: "..id);
      end
   end
end

This is used to get all intersecting entity bounding boxes within the volumes.

Prints something like:

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volumeID: 17
seid: 3
seid: 11
seid: 14
seid: 15

volumeID: 19
seid: 4


This code will not work on any version released yet, but it will on the next version. v2.0