mtcontrib/banners
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Code Issues Releases Wiki Activity

minimize metadata size

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also changed banners.max_transformations to
banners.max_undo_levels and lowered the value substantially.
This commit is contained in:
Luke aka SwissalpS 2024-11-28 14:18:26 +01:00
parent 3d22f9b76b
commit 7e3a84eaac
1 changed files with 24 additions and 14 deletions
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38
init.lua
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@ -29,15 +29,11 @@ banners.masks = {
"star_chevron", "checkered_8_4", "checkered_16_8" "star_chevron", "checkered_8_4", "checkered_16_8"
} }
-- The amount of transformations needs to be capped somewhere -- It is now unlikely for the server to crash from too long
-- to avoid crashing server. -- history since we now trim out garbage when converting to
-- It doesn't make sense to have any one mask multiple times -- metadata. This limit is now just to avoid run-time
-- but users normally don't follow strict logic when being -- memory bloat.
-- creative, so we give them plenty of space to work with. banners.max_undo_levels = 256
-- A better approach would be to strip duplicates and to
-- drop all previous masks if a full background is dropped
-- on top of other masks.
banners.max_transformations = #banners.masks * #banners.masks
banners.colors = { banners.colors = {
"black", "cyan", "green", "white", "black", "cyan", "green", "white",
@ -143,7 +139,7 @@ function banners.Banner:new(banner)
end end
function banners.Banner.push_transform(self, transform) function banners.Banner.push_transform(self, transform)
table.insert(self.transforms, transform) table.insert(self.transforms, transform)
if #self.transforms > banners.max_transformations then if #self.transforms > banners.max_undo_levels then
table.remove(self.transforms, 1) table.remove(self.transforms, 1)
end end
end end
@ -152,10 +148,24 @@ function banners.Banner.pop_transform(self)
end end
function banners.Banner.get_transform_string(self) function banners.Banner.get_transform_string(self)
local final = {} local final = {}
for _, transform in ipairs(self.transforms) do local used = {}
table.insert(final, "(" .. transform.texture local transform
.. "^[mask:" .. transform.mask .. "^[makealpha:0,0,0)") -- work backwards to keep resulting data small
end local i = #self.transforms
repeat
transform = self.transforms[i]
-- same mask can be trimmed out only using most recent
if not used[transform.mask] then
used[transform.mask] = true
table.insert(final, 1, "(" .. transform.texture
.. "^[mask:" .. transform.mask .. "^[makealpha:0,0,0)")
-- anything before a background is fully covered
if "mask_background.png" == transform.mask then
break
end
end
i = i - 1
until i == 0
local ret = table.concat(final, "^") local ret = table.concat(final, "^")
return ret return ret
end end