fix analysis of games from position

ui/analyse/src/analyse.js

@@ -5,6 +5,10 @@ module.exports = function(steps, analysis) {
 
   this.tree = steps;
 
+  this.firstPly = function() {
+    return this.tree[0].ply;
+  }.bind(this);
+
   this.getStep = function(path) {
     var tree = this.tree;
     for (var j in path) {

ui/analyse/src/control.js

@@ -48,7 +48,7 @@ module.exports = {
     var p = ctrl.vm.path;
     var len = p.length;
     if (len === 1) {
-      if (p[0].ply === 0) return;
+      if (p[0].ply === ctrl.analyse.firstPly()) return;
       p[0].ply--;
     } else {
       if (p[len - 1].ply > p[len - 2].ply) p[len - 1].ply--;
@@ -70,7 +70,7 @@ module.exports = {
 
   first: function(ctrl) {
     ctrl.userJump([{
-      ply: 0,
+      ply: ctrl.analyse.firstPly(),
       variation: null
     }]);
   },

ui/analyse/src/ctrl.js

@@ -22,7 +22,7 @@ module.exports = function(opts) {
 
   this.userId = opts.userId;
 
-  var initialPath = opts.path ? treePath.read(opts.path) : treePath.default();
+  var initialPath = opts.path ? treePath.read(opts.path) : treePath.default(this.analyse.firstPly());
 
   this.vm = {
     path: initialPath,
@@ -53,7 +53,7 @@ module.exports = function(opts) {
       console.log(e);
     }
     if (!s) {
-      this.vm.path = treePath.default();
+      this.vm.path = treePath.default(this.analyse.firstPly());
       this.vm.pathStr = treePath.write(this.vm.path);
       s = this.analyse.getStep(this.vm.path);
     }

ui/analyse/src/path.js

@@ -11,9 +11,9 @@ function copy(obj, newValues) {
 
 module.exports = {
 
-  default: function() {
+  default: function(ply) {
     return [{
-      ply: 0,
+      ply: ply || 0,
       variation: null
     }];
   },