Placement enforcement for settlement working

Signed-off-by: James Ketrenos <james_eikona@ketrenos.com>

client/src/Board.css

@@ -54,6 +54,7 @@
   height: 1.5em;
   transform: translate(-50%, -50%);
   z-index: 5;
+  pointer-events: none;
 }
 
 .Corner-Shape {
@@ -66,14 +67,6 @@
   clip-path: polygon(50% 0%,70% 15%,70% 2%,90% 2%,90% 30%,100% 40%,100% 100%,65% 100%,65% 65%,35% 65%,35% 100%,0% 100%,0% 40%);
 }
 
-.Corner .Option {
-  background-color: rgba(255, 255, 255, 0.5);
-}
-
-.Corner-Shape:hover {
-  background-color: white;
-}
-
 .Road {
   position: absolute;
   display: flex;
@@ -84,6 +77,7 @@
   width: 0.5em;
   height: 2.5em;
   z-index: 0;
+  pointer-events: none;
 }
 
 .Road-Shape {
@@ -97,10 +91,16 @@
 }
 
 
-.Road .Option {
+.Option {
+  pointer-events: all;
+}
+
+.Option .Corner-Shape,
+.Option .Road-Shape {
   background-color: rgba(255, 255, 255, 0.5);
 }
 
+.Corner-Shape:hover,
 .Road-Shape:hover {
   background-color: white;
 }

client/src/Board.js

@@ -352,6 +352,7 @@ const Board = ({ table, game }) => {
   }
 
   if (game && game.placements) {
+    /* Set color and type based on placement data from the server */
     game.placements.corners.forEach((corner, index) => {
       const el = document.querySelector(`.Corner[data-index="${index}"]`);
       if (!el) {
@@ -376,6 +377,32 @@ const Board = ({ table, game }) => {
         el.setAttribute('data-color', road.color);
       }
     });
+    /* Clear all 'Option' targets */
+    const nodes = document.querySelectorAll(`.Option`);
+    for (let i = 0; i < nodes.length; i++) {
+      nodes[i].classList.remove('Option');
+    }
+    /* Add 'Option' based on game.turn.limits */
+    if (game.turn && game.turn.limits) {
+      if (game.turn.limits['roads']) {
+        game.turn.limits['roads'].forEach(index => {
+          const el = document.querySelector(`.Road[data-index="${index}"]`);
+          if (!el) {
+            return;
+          }
+          el.classList.add('Option');
+        });
+      }
+      if (game.turn.limits['corners']) {
+        game.turn.limits['corners'].forEach(index => {
+          const el = document.querySelector(`.Corner[data-index="${index}"]`);
+          if (!el) {
+            return;
+          }
+          el.classList.add('Option');
+        });
+      }
+    }
   }
 
   const canAction = (action) => {

server/routes/games.js

@@ -205,8 +205,10 @@ const processGameOrder = (game, player, dice) => {
       game.playerOrder = players.map(player => getPlayerColor(game, player));
       game.state = 'initial-placement';
       message = `Initial settlement placement has started!`;
+
       game.turn = {
         actions: ['place-settlement'],
+        limits: { corners: getValidCorners(game) },
         name: getPlayerName(game, players[0]),
         color: getPlayerColor(game, players[0])
       };
@@ -583,6 +585,41 @@ const getNextPlayer = (game, name) => {
   return name;
 }
 
+const getValidCorners = (game) => {
+  const limits = [];
+
+  /* For each corner, if the corner already has a color set, skip it
+   * If no color is set, walk each road that leaves that corner and
+   * check to see if there is a settlement placed at the end of that road
+   * If so, this location cannot have a settlement. 
+   */
+  layout.corners.forEach((corner, cornerIndex) => {
+    if (game.placements.corners[cornerIndex].color) {
+      return;
+    }
+    let valid = true;
+    for (let r = 0; valid && r < corner.roads.length; r++) {
+      const road = layout.roads[corner.roads[r]];
+      for (let c = 0; valid && c < road.corners.length; c++) {
+        /* This side of the road is pointing to the corner being validated. Skip it. */
+        if (road.corners[c] === cornerIndex) {
+          continue;
+        }
+        /* There is a settlement within one segment from this
+        * corner, so it is invalid for settlement placement */
+        if (game.placements.corners[road.corners[c]].color) {
+          valid = false;
+        }
+      }
+    }
+    if (valid) {
+      limits.push(cornerIndex);
+    }
+  });
+
+  return limits;
+}
+
 router.put("/:id/:action/:value?", async (req, res) => {
   const { action, id } = req.params,
     value = req.params.value ? req.params.value : "";
@@ -683,7 +720,7 @@ router.put("/:id/:action/:value?", async (req, res) => {
     corner.type = 'settlement';
     if (game.state === 'initial-placement') {
       game.turn.actions = ['place-road'];
-      game.turn.limits = { corner: index }; /* road placement is limited to be near this corner index */
+      game.turn.limits = { roads: layout.corners[index].roads }; /* road placement is limited to be near this corner */
       addChatMessage(game, session, `Placed a settlement. Next, they need to place a road.`);
     } else {
       error = `Settlement placement not enabled for normal game play.`;
@@ -715,6 +752,7 @@ router.put("/:id/:action/:value?", async (req, res) => {
       const next = getNextPlayer(game, name);
       game.turn = {
         actions: ['place-settlement'],
+        limits: { corners: getValidCorners(game) },
         name: next,
         color: getColorFromName(game, next)
       };