make cooldown linking configurable, remove hardcoded link between

minimap and earth

README.md

@@ -146,6 +146,7 @@ Meaning of some values:
 | hid    | Hidden canvases, can be just seen by pressing P (default: false)|
 | sd     | Start-date of the canvas (for historical view)                  |
 | ed     | end date for historical view (canvas retired)                   |
+| linkcd | id of another canvas to take the cooldown from                  |
 
 Notes:
 

src/canvases.json

@@ -373,6 +373,7 @@
     "pcd" : 7000,
     "cds": 60000,
     "ranked" : true,
+    "linkcd" : 0,
     "sd": "2024-02-22"
   }
 }

src/core/draw.js

@@ -189,6 +189,7 @@ export default async function drawByOffsets(
       user.country,
       ranked,
       canvasId,
+      canvas.linkcd ?? canvasId,
       i, j,
       clrIgnore,
       req,

src/data/redis/cooldown.js

@@ -23,6 +23,8 @@ const PREFIX = 'cd';
  * @param id userId
  * @param ranked boolean if increasing rank (should only be true if logged in)
  * @param clrIgnore, bcd, pcd, cds information about canvas
+ * @param canvasId id of the canvas we are placing on
+ * @param canvasCdId id of the canvas we take the cooldown from
  * @param i, j chunk coordinates
  * @param pxls Array with offsets of pixels
  * @return see lua/placePixel.lua
@@ -33,6 +35,7 @@ export default function allowPlace(
   country,
   ranked,
   canvasId,
+  canvasCdId,
   i, j,
   clrIgnore,
   req,
@@ -44,11 +47,6 @@ export default function allowPlace(
 ) {
   const isalKey = `${ALLOWED_PREFIX}:${ip}`;
   const captKey = (CAPTCHA_TIME >= 0) ? `${CAPTCHA_PREFIX}:${ip}` : 'nope';
-  // ATTENTION: HARDCODED LINKED COODLOWN OF MINIMAP AND EARTH CANVAS
-  let canvasCdId = canvasId;
-  if (canvasId === 11) {
-    canvasCdId = 0;
-  }
   const ipCdKey = `${PREFIX}:${canvasCdId}:ip:${ip}`;
   let idCdKey;
   if (id) {