feat: Hex Wars - zufällige Startecken

backend/src/tools/gebietseroberung/routes.js

@@ -45,10 +45,17 @@ const T_MINE   = 2;
 const T_ROCK   = 3;
 
 // ── Terrain generieren ────────────────────────────────────────────────────────
-function generateTerrain() {
+function generateTerrain(ownerHead, oppHead) {
   const t = Array(GRID).fill(null).map(() => Array(GRID).fill(T_NORMAL));
   const safe = new Set();
-  for (let r=0;r<3;r++) for (let c=0;c<3;c++) { safe.add(`${r},${c}`); safe.add(`${GRID-1-r},${GRID-1-c}`); }
+  // 3x3 Sicherheitszone um beide Startecken
+  for (const headStr of [ownerHead, oppHead]) {
+    const [hr,hc] = headStr.split(',').map(Number);
+    for (let dr=-2;dr<=2;dr++) for (let dc=-2;dc<=2;dc++) {
+      const r=hr+dr, c=hc+dc;
+      if (r>=0&&r<GRID&&c>=0&&c<GRID) safe.add(`${r},${c}`);
+    }
+  }
 
   const cells = [];
   for (let r=0;r<GRID;r++) for (let c=0;c<GRID;c++) if (!safe.has(`${r},${c}`)) cells.push([r,c]);
@@ -78,10 +85,17 @@ function computeFog(grid, playerId) {
 
 // ── Hilfsfunktionen ───────────────────────────────────────────────────────────
 function createGrid(ownerId, oppId) {
+  const corners = [[0,0],[0,GRID-1],[GRID-1,0],[GRID-1,GRID-1]];
+  for (let i=corners.length-1;i>0;i--) {
+    const j=Math.floor(Math.random()*(i+1));
+    [corners[i],corners[j]]=[corners[j],corners[i]];
+  }
+  const [or,oc] = corners[0];
+  const [pr,pc] = corners[1];
   const g = Array(GRID).fill(null).map(() => Array(GRID).fill(0));
-  g[0][0] = ownerId;
-  g[GRID-1][GRID-1] = oppId;
-  return g;
+  g[or][oc] = ownerId;
+  g[pr][pc] = oppId;
+  return { grid:g, ownerHead:`${or},${oc}`, oppHead:`${pr},${pc}` };
 }
 
 // Prüft ob [row,col] an den Kopf [hr,hc] angrenzt (8 Richtungen)
@@ -294,13 +308,13 @@ router.post('/', authenticate, (req, res) => {
   const opp = db.prepare('SELECT id, username FROM users WHERE id=?').get(opponent_id);
   if (!opp) return res.status(404).json({ error: 'Benutzer nicht gefunden' });
 
-  const grid    = createGrid(me, Number(opponent_id));
-  const terrain = generateTerrain();
+  const { grid, ownerHead, oppHead } = createGrid(me, Number(opponent_id));
+  const terrain = generateTerrain(ownerHead, oppHead);
 
   const result = db.prepare(`
     INSERT INTO geo_games (owner_id, opponent_id, grid, terrain, current_turn, move_count, owner_head, opp_head)
     VALUES (?, ?, ?, ?, ?, 0, ?, ?)
-  `).run(me, Number(opponent_id), JSON.stringify(grid), JSON.stringify(terrain), me, '0,0', `${GRID-1},${GRID-1}`);
+  `).run(me, Number(opponent_id), JSON.stringify(grid), JSON.stringify(terrain), me, ownerHead, oppHead);
 
   const myName = db.prepare('SELECT username FROM users WHERE id=?').get(me)?.username || 'Jemand';
   sendPush(Number(opponent_id), '⬡ Hex Wars', `${myName} hat dich zu einem Spiel eingeladen! Du bist zuerst dran.`);