Tracking Defold Objects

This module keeps track of active game objects.

This allows you to iterate over all objects, or subsets.

To use this library

1. Add this url to Assets->game.project->Dependencies

   • https://github.com/brpollock/defold-tracking/archive/master.zip

2. Then select Project->Fetch Libraries

To track an object

You need to require this module in the object's script and call track() to start tracking, and untrack() to stop.

trk = require('tracking.tracking')

local function init(self)
    trk.track()
    -- ...
end

local function final(self)
    trk.untrack()
    -- ...
end

To iterate over tracked objects

The function get() returns a table of tracked IDs as keys.

    local objs = trk.get()
    for id, _ in pairs(objs) do
        local pos = go.get_position(id)
        print(pos)
    end

Using classes

All objects are tracked in one table, but you can also track 'classes' (groups) of objects separately, by specifying a 'class' when calling track().

    trk.track("enemies")

And you can specify a class when calling get().

    local enemies = trk.get("enemies")
    local friends = trk.get("friends")

But note that all objects are still tracked as one list.

    local everyone = trk.get()

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