Improve opening battle presentation

data/scenarios/001_yellow_turbans.json

@@ -254,7 +254,7 @@
   "map": {
     "width": 22,
     "height": 14,
-    "background": "res://art/backgrounds/battlefield_frontier.png",
+    "background": "res://art/backgrounds/yingchuan_opening_battlefield.png",
     "terrain": [
       "GGGGFFFFGGGGGGGGHHHCCC",
       "GGGGFFFFGGGGGGGGHHHCCC",
@@ -346,12 +346,12 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        6,
+        7,
         5
       ],
       "ai_behavior": "guard",
       "ai_guard_anchor": [
-        6,
+        7,
         5
       ],
       "ai_guard_radius": 2,
@@ -368,7 +368,7 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        8,
+        10,
         6
       ],
       "base": {
@@ -438,8 +438,8 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        5,
-        6
+        9,
+        7
       ],
       "base": {
         "hp": 34,
@@ -454,7 +454,7 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        9,
+        11,
         4
       ],
       "base": {
@@ -470,7 +470,7 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        11,
+        13,
         7
       ],
       "base": {
@@ -486,7 +486,7 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        5,
+        7,
         2
       ],
       "base": {
@@ -502,12 +502,12 @@
       "team": "enemy",
       "level": 1,
       "pos": [
-        7,
+        8,
         6
       ],
       "ai_behavior": "guard",
       "ai_guard_anchor": [
-        7,
+        8,
         6
       ],
       "ai_guard_radius": 2,