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authorubq323 <ubq323@ubq323.website>2023-06-18 22:28:37 +0100
committerubq323 <ubq323@ubq323.website>2023-06-18 22:28:37 +0100
commitf55c9f415a081a175e48b51db894f23e59ce47a2 (patch)
treeee63f98d5c4f1a2a11e9800ced9c2861eb3085a7 /common/coords.lua
parent598bd4332deddd5f4c506689cbd136f495835ea7 (diff)
fix line lengths
Diffstat (limited to 'common/coords.lua')
-rw-r--r--common/coords.lua58
1 files changed, 41 insertions, 17 deletions
diff --git a/common/coords.lua b/common/coords.lua
index fc4aaa5..28579e6 100644
--- a/common/coords.lua
+++ b/common/coords.lua
@@ -37,7 +37,8 @@ function Hex.round(self)
-- return a new Hex rounded to integer coordinates
local fq,fr,fs = self.q,self.r,self.s
-- round all to nearest integer
- -- find which was changed the most, reset that one to be coherent with the other two.
+ -- find which was changed the most, reset that one to be coherent
+ -- with the other two.
local abs = math.abs
local rq,rr,rs = round(fq),round(fr),round(fs)
@@ -79,16 +80,26 @@ function Hex.iter_neighbours(self,radius)
assert(radius > 0,"radius must be at least 1")
return coroutine.wrap(function()
for q = -radius,radius do
- for r = math.max(-radius,-q-radius), math.min(radius,-q+radius) do
+ local rmin = math.max(-radius, -q-radius)
+ local rmax = math.min( radius, -q+radius)
+ for r = rmin, rmax do
coroutine.yield(self+Hex:make(q,r))
end
end
end)
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
-function Hex.__eq(a,b) return a.q==b.q and a.r==b.r 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
+function Hex.__eq(a,b)
+ return a.q==b.q and a.r==b.r
+end
Pos = class()
function Pos.new(cls)
@@ -102,8 +113,12 @@ end
function Pos.make(cls,...)
return cls:new():init(...)
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)
@@ -114,40 +129,49 @@ function Pos.__mul(a,b)
end
end
function Pos.__div(a,b)
- assert(type(b) == "number","can only divide Pos by scalar, and can't divide scalar by Pos")
+ assert(type(b) == "number","can only divide Pos by scalar")
return a*(1/b)
end
function Pos.__eq(a,b) return a.x==b.x and a.y==b.y end
function Pos.lensq(self) return self.x^2 + self.y^2 end
function Pos.len(self) return math.sqrt(self:lensq()) end
function Pos.norm(self) return self/self:len() end
-function Pos.dot(self,other) return self.x*other.x + self.y*other.y end
+function Pos.dot(self,other) return self.x*other.x+self.y*other.y end
function Pos.to_hex(self,into)
into = into or Hex:new()
local q = self.x*(SR3/3) - self.y*(1/3)
local r = (2/3)*self.y
return into:init(q,r,-q-r)
end
-function Pos.__tostring(self) return string.format("(%.2f,%.2f)",self.x,self.y) end
+function Pos.__tostring(self)
+ return string.format("(%.2f,%.2f)",self.x,self.y)
+end
-- represents coordinates of a chunk
--- ie pair of integers. the chunk at spawn is C(0,0), the one to the right of that is C(1,0), etc
+-- the chunk at spawn is C(0,0), to the right of that is C(1,0), etc
ChunkPos = class()
function ChunkPos.make(cls,u,v)
return setmetatable({u=u,v=v},cls)
end
-function ChunkPos.__add(self,other) return ChunkPos:make(self.u+other.u,self.v+other.v) end
-function ChunkPos.__sub(self,other) return ChunkPos:make(self.u-other.u,self.v-other.v) end
-function ChunkPos.__tostring(self) return string.format("C(%d,%d)",self.u,self.v) end
+function ChunkPos.__add(self,other)
+ return ChunkPos:make(self.u+other.u,self.v+other.v)
+end
+function ChunkPos.__sub(self,other)
+ return ChunkPos:make(self.u-other.u,self.v-other.v)
+end
+function ChunkPos.__tostring(self)
+ return string.format("C(%d,%d)",self.u,self.v)
+end
function ChunkPos.__eq(a,b) return a.u==b.u and a.v==b.v end
function ChunkPos.extents(self)
-- returns Hex of topleft and bottomright
local tlq,tlr = self.u*CHUNK_SIZE, self.v*CHUNK_SIZE
- local brq,brr = (self.u+1)*CHUNK_SIZE -1, (self.v+1)*CHUNK_SIZE -1
+ local brq,brr = (self.u+1)*CHUNK_SIZE-1, (self.v+1)*CHUNK_SIZE-1
return Hex:make(tlq,tlr), Hex:make(brq,brr)
end
function ChunkPos.neighborhood(self)
- -- return all chunkposes within the 3x3 square centered on self, including self
+ -- return all chunkposes within the 3x3 square centered on self,
+ -- including self
local out = {}
for du=-1,1 do
for dv = -1,1 do