Gadget that orders features reclaimed when placing buildings

[Niobium]

Code: Select all

function gadget:GetInfo()
    return {
        name      = 'Feature Test',
        desc      = '',
        author    = 'Niobium',
        version   = 'v1.0',
        date      = 'April 2011',
        license   = 'GNU GPL, v2 or later',
        layer     = 0,
        enabled   = true
    }
end

----------------------------------------------------------------
-- Synced only
----------------------------------------------------------------
if not gadgetHandler:IsSyncedCode() then
   return false
end

----------------------------------------------------------------
-- Callins
----------------------------------------------------------------
function gadget:UnitCreated(uID, uDefID, uTeam, bID)
    
    local uDef = UnitDefs[uDefID]
    if uDef.isBuilding or uDef.isFactory then
        local ux, uy, uz = Spring.GetUnitPosition(uID)
        local xr, zr
        if Spring.GetUnitBuildFacing(uID) % 2 == 0 then
            xr, zr = 4 * uDef.xsize, 4 * uDef.zsize
        else
            xr, zr = 4 * uDef.zsize, 4 * uDef.xsize
        end
        
        local features = Spring.GetFeaturesInRectangle(ux-xr, uz-zr, ux+xr, uz+zr)
        for i = 1, #features do
            local fID = features[i]
            local fDefID = Spring.GetFeatureDefID(fID)
            local fDef = FeatureDefs[fDefID]
            
            if (not fDef.geoThermal) and (fDef.name ~= 'geovent') then
                local fx, fy, fz = Spring.GetFeaturePosition(fID)
                Spring.DestroyFeature(fID)
                Spring.SpawnCEG('sparklegreen', fx, fy, fz)
                Spring.PlaySoundFile('sounds/reclaimed.wav', 1, fx, fy, fz)
            end
        end
    end
end