5 files changed, 59 insertions, 24 deletions
diff --git a/common/.map.lua.kak.Xd2mKc b/common/.map.lua.kak.Xd2mKc
new file mode 100644
index 0000000..aa2bfb0
--- /dev/null
+++ b/common/.map.lua.kak.Xd2mKc
@@ -0,0 +1,5 @@
+-- a Map is a 2d array of chunks
+-- it handles loading and unloading of chunks
+-- the specifics of which are then implemented separately for client and server
+-- it will probably also do things relating to entities and multiblock things
+
diff --git a/common/chunk.lua b/common/chunk.lua
index 8e2ec40..1d3faa6 100644
--- a/common/chunk.lua
+++ b/common/chunk.lua
@@ -1,6 +1,7 @@
 local json = require"common.dkjson"
+local class = require"common.class"
 
-local CHUNK_SIZE = 128
+local CHUNK_SIZE = 64
 
 -- for now tiles shall be booleans
 
@@ -15,10 +16,9 @@ local function index(offq,offr)
 	return CHUNK_SIZE*offq + offr + 1
 end
 
-local Chunk = {}
-Chunk.__index = Chunk
-function Chunk.make(tiles)
-	return setmetatable({tiles=tiles},Chunk)
+local Chunk = class()
+function Chunk.make(cls,tiles)
+	return setmetatable({tiles=tiles},cls)
 end
 function Chunk.at(self,hoffs)
 	if not index_ok(hoffs.q,hoffs.r) then return nil end
@@ -35,11 +35,12 @@ end
 function Chunk.from_packet_data(packet)
 	-- assuming packet has already been json.decoded
 	-- since otherwise how would we know it's a chunk packet
-	return Chunk.make(packet.tiles)
+	return Chunk:make(packet.tiles)
 end
 
 return {
 	Chunk=Chunk,
 	SIZE=CHUNK_SIZE,
-	index=index
+	index=index,
+	index_ok=index_ok,
 }
diff --git a/common/class.lua b/common/class.lua
new file mode 100644
index 0000000..37cf7bd
--- /dev/null
+++ b/common/class.lua
@@ -0,0 +1,23 @@
+local function class()
+	local T = {}
+	T.__index = T
+	return T
+end
+
+local function extend(Base)
+	local T = {}
+	T.__index = T
+	for k,v in pairs(Base) do
+		if k:sub(1,2) == "__" and k~="__index" then
+			T[k]=v
+		end
+	end
+	setmetatable(T,{__index=Base})
+end
+
+return setmetatable({
+	class=class,
+	extend=extend
+},{__call=class})
+
+
diff --git a/common/coords.lua b/common/coords.lua
index 2399e43..351aa53 100644
--- a/common/coords.lua
+++ b/common/coords.lua
@@ -1,3 +1,5 @@
+local class = require"common.class"
+
 -- Hex: q,r,s. invariant that q+r+s=0
 -- add, subtract
 -- constructor takes 3 positions and rounds to closest hex centre.
@@ -15,12 +17,11 @@ local Pos, Hex
 
 local SR3 = math.sqrt(3)
 
-Hex={}
-Hex.__index = Hex
-function Hex.make(q,r,s)
+local Hex = class()
+function Hex.make(cls,q,r,s)
 	s=s or -q-r
 	assert(q+r+s==0,"hex coord doesn't meet invariant")
-	return setmetatable({q=q,r=r,s=s},Hex)
+	return setmetatable({q=q,r=r,s=s},cls)
 end
 function Hex.round(self)
 	-- return a new Hex rounded to integer coordinates
@@ -40,32 +41,31 @@ function Hex.round(self)
 		rs = -rq-rr
 	end
 
-	return Hex.make(rq,rr,rs)
+	return Hex:make(rq,rr,rs)
 end
 
 function Hex.to_pos(self)
 	local x = self.q*SR3 + self.r*(SR3/2)
 	local y = self.r*(3/2)
-	return Pos.make(x,y)
+	return Pos:make(x,y)
 end
 
-function Hex.__add(self,other) return Hex.make(self.q+other.q, self.r+other.r, self.s+other.s) end
-function Hex.__sub(self,other) return Hex.make(self.q-other.q, self.r-other.r, self.s-other.s) end
+function Hex.__add(self,other) return Hex:make(self.q+other.q, self.r+other.r, self.s+other.s) end
+function Hex.__sub(self,other) return Hex:make(self.q-other.q, self.r-other.r, self.s-other.s) end
 function Hex.__tostring(self) return string.format("H(%.2f,%.2f)",self.q,self.r) end
 
 
-Pos = {}
-Pos.__index=Pos
-function Pos.make(x,y)
-	return setmetatable({x=x,y=y},Pos)
+Pos = class()
+function Pos.make(cls,x,y)
+	return setmetatable({x=x,y=y},cls)
 end
-function Pos.__add(self,other) return Pos.make(self.x+other.x,self.y+other.y) end
-function Pos.__sub(self,other) return Pos.make(self.x-other.x,self.y-other.y) end
+function Pos.__add(self,other) return Pos:make(self.x+other.x,self.y+other.y) end
+function Pos.__sub(self,other) return Pos:make(self.x-other.x,self.y-other.y) end
 function Pos.__mul(a,b)
 	if type(a) == "number" then
-		return Pos.make(a*b.x,a*b.y)
+		return Pos:make(a*b.x,a*b.y)
 	elseif type(b) == "number" then
-		return Pos.make(a.x*b,a.y*b)
+		return Pos:make(a.x*b,a.y*b)
 	else
 		error("can only multiply Pos by scalar")
 	end
@@ -81,7 +81,7 @@ function Pos.dot(self,other) return self.x*other.x + self.y*other.y end
 function Pos.to_hex(self)
 	local q = self.x*(SR3/3) - self.y*(1/3)
 	local r = (2/3)*self.y
-	return Hex.make(q,r,-q-r)
+	return Hex:make(q,r,-q-r)
 end
 function Pos.__tostring(self) return string.format("(%.2f,%.2f)",self.x,self.y) end
 
diff --git a/common/map.lua b/common/map.lua
new file mode 100644
index 0000000..fe4b9e0
--- /dev/null
+++ b/common/map.lua
@@ -0,0 +1,6 @@
+-- a Map is a 2d array of chunks
+-- it handles loading and unloading of chunks
+-- the specifics of which are then implemented separately for client and server
+-- it will probably also do things relating to entities and multiblock things
+
+