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local world = {}
world.chunk_size = 1024
world.chunks = {}
setmetatable(world.chunks, {
__index = function(_, bee)
if rawget(world.chunks, bee) == nil then
world.chunks[bee] = {}
end
return world.chunks[bee]
end,
})
world.objects = {}
world.last_id = 0
function world.chunk_pos(x, y)
return math.floor(x / world.chunk_size), math.floor(y / world.chunk_size)
end
function world.world_pos(x, y)
return x * world.chunk_size, y * world.chunk_size
end
function world.chunk(x, y)
local cx, cy = world.chunk_pos(x, y)
if not world.chunks[cx][cy] then
-- load chunk from disk if the
world.chunks[cx][cy] = setmetatable(
{pos = {cx, cy}, objects = {}}, chunk_mt)
end
return world.chunks[cx][cy]
end
return world
|
