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loader.lua
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loader.lua
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local path = (...):match('^.+[%.\\/]') or ''
local grid = require (path..'grid')
local atlas = require (path..'atlas')
local map = require (path..'map')
local isomap = require (path..'isomap')
local mapdata = require (path..'mapdata')
local drawlist = require (path..'drawlist')
local serialize= require (path..'ext.serialize')
local DEFAULT_ATLAS_EXTENSION = '.atlas'
local DEFAULT_MAP_EXTENSION = '.map'
local cachedImages = setmetatable({},{__mode = 'v'})
local function getPathComponents(path)
local dir,name,ext = path:match('^(.-)([^\\/]-)%.?([^\\/%.]*)$')
if #name == 0 then name = ext; ext = '' end
return dir,name,ext
end
local function removeUpDirectory(path)
while path:find('%.%.[\\/]+') do
path = path:gsub('[^\\/]*[\\/]*%.%.[\\/]+','')
end
return path
end
local stripExcessSlash = function(path)
return path:gsub('[\\/]+','/'):match('^/?(.*)')
end
local copyProperty = function(p)
local ptype = type(p)
if ptype ~= 'table' then return p end
local copy = {}
for i,v in pairs(t) do
local itype = type(i)
local vtype = type(v)
if itype ~= 'table' and vtype ~= 'table' then
copy[i] = v
end
end
return copy
end
-- ====================================
-- MODULE
-- ====================================
local l = {}
function l.saveAtlas(atlas,path)
local t = {
iWidth = atlas.iWidth,
iHeight = atlas.iHeight,
qWidth = atlas.qWidth,
qHeight = atlas.qHeight,
aWidth = atlas.aWidth,
aHeight = atlas.aHeight,
ox = atlas.ox,
oy = atlas.oy,
xs = atlas.xs,
ys = atlas.ys,
properties= grid.new(),
atlasname = atlas:getName(),
}
for x,y,v in grid.iterate(atlas) do
if v.property then
t.properties:set(x,y,copyProperty(t.property))
end
end
return serialize.save(t,path)
end
function l.loadAtlas(path)
path = stripExcessSlash(path)
local t = serialize.load(path)
if not t then return nil,'No file was found for the specified path' end
local atlas = atlas.new(t.iWidth,t.iHeight,t.qWidth,t.qHeight,t.aWidth,t.aHeight,t.ox,t.oy,t.xs,t.ys)
local coords = {}
for x,y,v in grid.iterate(t.properties) do
coords[1],coords[2] = x,y
atlas:setqProperty(coords,v)
end
return atlas
end
function l.saveMap(map,path)
if not map.imagesource then
return nil,'Must specify map.imagesource to image path!'
end
path = stripExcessSlash(path)
local class = getmetatable(map)
local dir,name,ext= getPathComponents(path)
local t = {
tw = map.tw,
th = map.th,
imagesource= map.imagesource,
atlasname = map.atlas:getName() or name,
layername = map.layername,
maparray = map:export(1),
viewrange = {map:getViewRange()},
type = class== isomap and 'isometric' or 'orthogonal'
}
local grid = map.tilegrid
local array = t.maparray
for x,y,v in grid:iterate() do
local index = v.index
if index then
local flip_meta = v.sx ~= 1 or v.sy ~= 1
local angle_meta= v.angle ~= 0
if angle_meta or flip_meta then
local p = {
index = nil,
sx = nil,
sy = nil,
angle = nil,
property= nil,
}
p.index = index
if flip_meta then
p.sx,p.sy = v.sx,v.sy
end
if angle_meta then
p.angle = v.angle
end
p.property= copyProperty(v.property)
local i = (y-1)*array.width+x
array[i] = p
end
end
end
local _,err = serialize.save(t,path)
if err then return nil,err end
local atlaspath = removeUpDirectory(dir..t.atlasname..DEFAULT_ATLAS_EXTENSION)
return l.saveAtlas(map.atlas,atlaspath)
end
function l.loadMap(path)
path = stripExcessSlash(path)
local dir,name,ext= getPathComponents(path)
local t = serialize.load(path)
if not t then return nil,'No file was found for the specified path' end
local imagesource = removeUpDirectory( dir..t.imagesource )
local image = cachedImages[imagesource] or love.graphics.newImage( imagesource )
cachedImages[imagesource] = image
local atlas = l.loadAtlas(t.atlasname..DEFAULT_ATLAS_EXTENSION)
local maptype = t.type
local mapNew = maptype== 'orthogonal' and map.new or isomap.new
local mapobject = mapNew(image,atlas,t.tw,t.th)
local maparray = t.maparray
local maptilegrid= mapobject.tilegrid
mapobject:setImageSource(t.imagesource)
mapobject:setViewRange(1,1,maparray.width,maparray.height)
mapobject:setName(t.layername)
mapobject:setViewRange(unpack(t.viewrange))
for x,y,v in mapdata.array(maparray,maparray.width,maparray.height) do
local isIndex = type(v) == 'number'
if isIndex then
if v > 0 then mapobject:setTile(x,y,v) end
else
mapobject:setTile(x,y,v.index)
local mv = maptilegrid(x,y)
mv.sx,mv.sy= v.sx or 1,v.sy or 1
mv.angle = v.angle or 0
mapobject:setAngle(x,y,v.angle)
end
end
return mapobject
end
function l.saveDrawList(drawlist,path)
path = stripExcessSlash(path)
local dir,name,ext= getPathComponents(path)
local t = {layers= {}}
t.x,t.y = drawlist:getTranslation()
local layers = t.layers
for i,layer in pairs(drawlist.layers) do
local settings = drawlist.settings[layer]
local layername= layer.layername or name..'_layer_'..i
layers[i] = {
isDrawable= settings.isDrawable,
xtranscale= settings.xtranscale,
ytranscale= settings.ytranscale,
layername = layername,
isDummy = nil,
}
local class = getmetatable(layer)
if class == map or class == isomap then
local mappath = removeUpDirectory(dir..layername..DEFAULT_MAP_EXTENSION)
l.saveMap(layer,mappath)
else
layers[i].isDummy = true
end
end
return serialize.save(t,path)
end
function l.loadDrawList(path)
path = stripExcessSlash(path)
local dir,name,ext= getPathComponents(path)
local t = serialize.load(path)
if not t then return nil,'No file was found for the specified path' end
local dl = drawlist.new()
dl:setTranslation(t.x,t.y)
for i,layer in ipairs(t.layers) do
local newlayer
if layer.isDummy then
newlayer = {}
newlayer.layername = layer.layername
else
local mappath = removeUpDirectory(dir..layer.layername..DEFAULT_MAP_EXTENSION)
newlayer = l.loadMap(mappath)
end
dl:insert(newlayer.layername or layer.layername,newlayer,layer.xtranscale,layer.ytranscale,layer.isDrawable)
end
return dl
end
return l