Centered grid

config.lua

@@ -7,6 +7,7 @@ VERSION = 'v0.2'
 ---@field pointRadius number Radius of each grid point, relative to cellSize
 ---@field linePointRadius number Radius of line start/end points, relative to cellSize
 ---@field cellSize number Size of each grid cell
+---@field gridOffset number X offset of grid processing
 ---@field lineStyle string love2d line style setting
 ---@field lineWidth number love2d line width setting
 ---@field menuLineWidth number love2d line width for buttons
@@ -17,6 +18,7 @@ Config = {
     linePointRadius = 0.4,
 
     cellSize = 30,
+    gridOffset = 160,
 
     lineStyle = "smooth",
     lineWidth = 0.1,

grid.lua

@@ -39,8 +39,9 @@ function Grid:draw()
     end
 
         for y = 1, self.size.y do
-            local px, py = x * Config.cellSize, y * Config.cellSize
+            local gp = GridPoint:new(x, y)
-            love.graphics.circle( "fill", px - Config.cellSize / 2, py - Config.cellSize / 2, Config.cellSize * Config.pointRadius)
+            local px, py = gp:globalCoords()
+            love.graphics.circle( "fill", px, py, Config.cellSize * Config.pointRadius)
         end
     end
     -- Draw lines

gridpoint.lua

@@ -9,7 +9,7 @@ GridPoint = Point
 ---@return Point
 function GridPoint:absolute()
     return Point:new(
-        self.x * Config.cellSize,
+        self.x * Config.cellSize + Config.gridOffset,
         self.y * Config.cellSize
     )
 end
@@ -17,7 +17,7 @@ end
 -- Same as coords, but converted to global coords
 ---@return number, number
 function GridPoint:globalCoords()
-    return self.x * Config.cellSize - Config.cellSize / 2,
+    return self.x * Config.cellSize - Config.cellSize / 2 + Config.gridOffset,
     self.y * Config.cellSize - Config.cellSize / 2
 end
 
@@ -25,7 +25,7 @@ end
 ---@param point Point
 ---@return GridPoint
 function GridPoint.snapCoords( point )
-    local x = math.ceil( point.x / Config.cellSize )
+    local x = math.ceil( (point.x - Config.gridOffset) / Config.cellSize )
     local y = math.ceil( point.y / Config.cellSize )
     return GridPoint:new( x, y )
 end