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local Entity = require("entity")
local Tilemap = {}
Tilemap.__index = Tilemap
local function loadMapData(mapPath)
if type(mapPath) ~= "string" then
return mapPath
end
if love and love.filesystem and love.filesystem.load then
local chunk, err = love.filesystem.load(mapPath)
if not chunk then
error("Tilemap: failed to load '" .. tostring(mapPath) .. "': " .. tostring(err))
end
return chunk()
end
local mod = mapPath:gsub("%.lua$", ""):gsub("/", ".")
local ok, data = pcall(require, mod)
if not ok then
error("Tilemap: failed to load '" .. tostring(mapPath) .. "': " .. tostring(data))
end
return data
end
local function objectToEntity(obj)
local x = obj.x or 0
local y = obj.y or 0
local w = obj.width or 0
local h = obj.height or 0
local entity = Entity:new(x, y, w, h)
entity:setPropertiesFromOptions({
properties = obj.properties or {},
name = obj.name,
type = obj.type,
id = obj.id,
rotation = obj.rotation,
visible = obj.visible
})
return entity
end
function Tilemap:new(map)
local self = setmetatable({}, Tilemap)
self.entitiesTiles = {}
self.entitiesSpawns = {}
self.entitiesCameraBorders = {}
self.layerBackground = nil
self.layerGround = nil
self.layerForeground = nil
self.tileWidth = 16
self.tileHeight = 16
self.mapWidth = 0
self.mapHeight = 0
self.tilesetImage = nil
self.tileQuads = {}
local mapData = loadMapData(map)
self.mapData = mapData
self.tileWidth = mapData and (mapData.tilewidth or 16) or 16
self.tileHeight = mapData and (mapData.tileheight or 16) or 16
self.mapWidth = (mapData and mapData.width or 0) * self.tileWidth
self.mapHeight = (mapData and mapData.height or 0) * self.tileHeight
if type(map) == "string" then
local basePath = map:gsub("%.lua$", ""):gsub("%.tmx$", "")
local imagePath = basePath .. ".png"
local ok, img = pcall(love.graphics.newImage, imagePath)
if ok and img then
self.tilesetImage = img
local firstGid = (mapData.tilesets and mapData.tilesets[1] and mapData.tilesets[1].firstgid) or 1
local imgW, imgH = img:getDimensions()
local tw, th = self.tileWidth, self.tileHeight
local cols = math.floor(imgW / tw)
local rows = math.floor(imgH / th)
for index = 0, (cols * rows) - 1 do
local qx = (index % cols) * tw
local qy = math.floor(index / cols) * th
self.tileQuads[firstGid + index] = love.graphics.newQuad(qx, qy, tw, th, imgW, imgH)
end
end
end
if mapData and mapData.layers then
for _, layer in ipairs(mapData.layers) do
if layer.type == "tilelayer" and layer.name then
local n = layer.name:lower()
if n == "background" then self.layerBackground = layer
elseif n == "ground" then self.layerGround = layer
elseif n == "foreground" then self.layerForeground = layer
end
elseif layer.type == "objectgroup" and layer.objects then
local name = (layer.name or ""):gsub("%s+", "_"):lower()
for _, obj in ipairs(layer.objects) do
local entity = objectToEntity(obj)
if name == "tiles" or name == "tile" then
table.insert(self.entitiesTiles, entity)
elseif name == "spawn" then
table.insert(self.entitiesSpawns, entity)
elseif name == "camera_border" then
table.insert(self.entitiesCameraBorders, entity)
end
end
end
end
end
return self
end
function Tilemap:getEntitiesTiles()
return self.entitiesTiles
end
function Tilemap:getEntitiesSpawns()
return self.entitiesSpawns
end
function Tilemap:getEntitiesCameraBorders()
return self.entitiesCameraBorders
end
-- Returns minX, maxX, minY, maxY from camera_border entities for use with Camera:setLimits.
-- Returns nil, nil, nil, nil if there are no camera border entities.
function Tilemap:getCameraLimits()
local borders = self.entitiesCameraBorders
if not borders or #borders == 0 then
return nil, nil, nil, nil
end
local minX, maxX = math.huge, -math.huge
local minY, maxY = math.huge, -math.huge
for _, e in ipairs(borders) do
local x, y = e.x or 0, e.y or 0
local w, h = e.width or 0, e.height or 0
minX = math.min(minX, x)
maxX = math.max(maxX, x + w)
minY = math.min(minY, y)
maxY = math.max(maxY, y + h)
end
return minX, maxX, minY, maxY
end
function Tilemap:getMapData()
return self.mapData
end
function Tilemap:getBackgroundLayer()
return self.layerBackground
end
function Tilemap:getGroundLayer()
return self.layerGround
end
function Tilemap:getForegroundLayer()
return self.layerForeground
end
function Tilemap:getLayers()
return {
background = self.layerBackground,
ground = self.layerGround,
foreground = self.layerForeground
}
end
function Tilemap:getTileWidth()
return self.tileWidth
end
function Tilemap:getTileHeight()
return self.tileHeight
end
function Tilemap:getMapWidth()
return self.mapWidth
end
function Tilemap:getMapHeight()
return self.mapHeight
end
function Tilemap:getTilesetImage()
return self.tilesetImage
end
function Tilemap:getTileQuads()
return self.tileQuads
end
return Tilemap
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