hiding option, readme

ReadMe.md

@@ -0,0 +1,37 @@
+# World6-travelmap
+I made a little program for displaying a simplistic graph of nodes and edges to
+make a travel network with calculated distances... specifically for my Minecraft
+World.
+
+Data must be in a map.json file. `nodes` is an object with named arrays of info.
+Each node is an `x`, `y`, and `z` position. The optional 4th item is `true` to
+display the node's name, a string to display *that* as the node name, or `false`
+to completely hide a node. `edges` is an array of arrays of two names of nodes.
+An optional 3rd item can be set to `false` to hide an edge.
+
+- TODO: Make drag and drop loading of a JSON file possible. :D
+- TODO: Make it not error with no map file.
+
+## Example JSON
+
+```json
+{
+  "nodes": {
+    "TestA": [100, 0, 100],
+    "TestB": [150, 0, 200],
+    "TestC": [300, 0, -200, true],
+    "TestE": [1200, 0, 200, "Displayed Name"],
+    "TestFarLeft": [-200, 5000, 50],
+    "TestFarBottomRight": [1200, 0, 2000, true],
+    "Hidden Node": [0, 0, 0, false]
+  },
+  "edges": [
+    ["TestA", "TestB"],
+    ["TestA", "TestC"],
+    ["TestB", "TestC"],
+    ["TestC", "TestE"],
+    ["TestE", "TestFarLeft"],
+    ["Hidden Node", "TestC", false]
+  ]
+}
+```

map.json

@@ -5,13 +5,15 @@
     "TestC": [300, 0, -200, true],
     "TestE": [1200, 0, 200, "Displayed Name"],
     "TestFarLeft": [-200, 5000, 50],
-    "TestFarBottomRight": [1200, 0, 2000, true]
+    "TestFarBottomRight": [1200, 0, 2000, true],
+    "Hidden Node": [0, 0, 0, false]
   },
   "edges": [
     ["TestA", "TestB"],
     ["TestA", "TestC"],
     ["TestB", "TestC"],
     ["TestC", "TestE"],
-    ["TestE", "TestFarLeft"]
+    ["TestE", "TestFarLeft"],
+    ["Hidden Node", "TestC", false]
   ]
 }

src/main.lua

@@ -57,6 +57,7 @@ function love.draw()
       error("Edge " .. index .. " names nonexistent node(s): " .. edge[1] .. "->" .. node_a .. ", " .. edge[2] .. "->" .. node_b)
     end
 
+    if not (edge[3] == false) then
       love.graphics.setColor(0.33, 0.33, 0.33, 1)
       love.graphics.line(node_a[1], node_a[3], node_b[1], node_b[3])
 
@@ -67,11 +68,14 @@ function love.draw()
       love.graphics.setColor(0.67, 0.67, 0.67, 1)
       love.graphics.print(distance .. "m", center_x, center_z - font:getHeight() / 2, 0, 1 / scale, 1 / scale)
     end
+  end
 
   -- draw nodes and label them
   love.graphics.setColor(1, 1, 1, 1)
   for name, node in pairs(nodes) do
+    if not (node[4] == false) then
       love.graphics.circle("fill", node[1], node[3], node_radius / scale)
+    end
 
     if node[4] then
       if type(node[4]) == "string" then