Added a second page to the book

src/main/java/com/minelittlepony/unicopia/enchanting/PageInstance.java

@@ -12,6 +12,9 @@ class PageInstance implements IPage {
 
     int index;
 
+    @Nullable
+    ResourceLocation parent;
+
     @Nonnull
     ResourceLocation name;
 
@@ -27,6 +30,10 @@ class PageInstance implements IPage {
     PageInstance(ResourceLocation id, JsonObject json) {
         this.name = id;
 
+        if (json.has("parent")) {
+            parent = new ResourceLocation(json.get("parent").getAsString());
+        }
+
         if (json.has("state")) {
             state = PageState.of(json.get("state").getAsString());
         }

src/main/java/com/minelittlepony/unicopia/enchanting/Pages.java

@@ -23,8 +23,8 @@ public class Pages {
         return instance;
     }
 
-    private final Map<ResourceLocation, IPage> pages = Maps.newHashMap();
-    private final List<IPage> pagesByIndex = Lists.newArrayList();
+    private final Map<ResourceLocation, PageInstance> pages = Maps.newHashMap();
+    private final List<PageInstance> pagesByIndex = Lists.newArrayList();
 
     private final Map<String, IConditionFactory> conditionFactories = Maps.newHashMap();
 
@@ -41,10 +41,25 @@ public class Pages {
         pagesByIndex.clear();
         assets.walk();
 
-        int index = 0;
-        for (IPage ipage : pages.values()) {
-            ((PageInstance)ipage).index = index++;
-            pagesByIndex.add(ipage);
+        List<ResourceLocation> names = Lists.newArrayList();
+
+        for (PageInstance page : pages.values()) {
+            if (page.parent != null) {
+                int i = names.indexOf(page.parent);
+                if (i != -1) {
+                    names.add(i, page.name);
+                    pagesByIndex.add(i, page);
+
+                    continue;
+                }
+            }
+
+            names.add(page.name);
+            pagesByIndex.add(page);
+        }
+
+        for (int i = 0; i < pagesByIndex.size(); i++) {
+            pagesByIndex.get(i).index = i;
         }
     }
 
@@ -70,7 +85,7 @@ public class Pages {
     }
 
     public Stream<IPage> getUnlockablePages(Predicate<IPage> predicate) {
-        return pages.values().stream().filter(predicate);
+        return pages.values().stream().map(IPage.class::cast).filter(predicate);
     }
 
     public void triggerUnlockEvent(IPageOwner owner, IUnlockEvent event, @Nullable IPageUnlockListener unlockListener) {

src/main/java/com/minelittlepony/unicopia/inventory/gui/ContainerSpellBook.java

@@ -60,12 +60,12 @@ public class ContainerSpellBook extends Container {
     }
 
     public void initCraftingSlots() {
-        addSlotToContainer(new SlotEnchanting(craftMatrix, 0, 180, 50));
-        addSlotToContainer(new SlotEnchanting(craftMatrix, 1, 154, 94));
-        addSlotToContainer(new SlotEnchanting(craftMatrix, 2, 180, 134));
-        addSlotToContainer(new SlotEnchanting(craftMatrix, 3, 231, 120));
-        addSlotToContainer(new SlotEnchanting(craftMatrix, 4, 232, 65));
-        addSlotToContainer(resultSlot = new SlotEnchantingResult(listener, PlayerSpeciesList.instance().getPlayer(player), craftMatrix, craftResult, 0, 196, 92));
+        addSlotToContainer(new SlotEnchanting(craftMatrix, 0, 175, 50));
+        addSlotToContainer(new SlotEnchanting(craftMatrix, 1, 149, 94));
+        addSlotToContainer(new SlotEnchanting(craftMatrix, 2, 175, 134));
+        addSlotToContainer(new SlotEnchanting(craftMatrix, 3, 226, 120));
+        addSlotToContainer(new SlotEnchanting(craftMatrix, 4, 227, 65));
+        addSlotToContainer(resultSlot = new SlotEnchantingResult(listener, PlayerSpeciesList.instance().getPlayer(player), craftMatrix, craftResult, 0, 191, 92));
     }
 
     @Override

src/main/java/com/minelittlepony/unicopia/inventory/gui/GuiSpellBook.java

@@ -112,10 +112,13 @@ public class GuiSpellBook extends GuiContainer implements IPageUnlockListener {
         if (slot instanceof SlotEnchanting) {
             GlStateManager.enableBlend();
             GL11.glDisable(GL11.GL_ALPHA_TEST);
+
             mc.getTextureManager().bindTexture(spellBookGuiTextures);
             drawModalRectWithCustomSizedTexture(slot.xPos - 1, slot.yPos - 1, 51, 223, 18, 18, 512, 256);
+
             GL11.glEnable(GL11.GL_ALPHA_TEST);
             GlStateManager.disableBlend();
+
             return true;
         }
         return false;
@@ -148,6 +151,9 @@ public class GuiSpellBook extends GuiContainer implements IPageUnlockListener {
         GlStateManager.enableBlend();
         GL11.glDisable(GL11.GL_ALPHA_TEST);
 
+        mc.getTextureManager().bindTexture(spellBookGuiTextures);
+        drawModalRectWithCustomSizedTexture(left + 147, top + 49, 407, 2, 100, 101, 512, 256);
+
         if (playerExtension.getPageState(currentIPage) != PageState.LOCKED) {
             ResourceLocation texture = currentIPage.getTexture();
 
@@ -163,9 +169,6 @@ public class GuiSpellBook extends GuiContainer implements IPageUnlockListener {
             }
         }
 
-        mc.getTextureManager().bindTexture(spellBookGuiTextures);
-        drawModalRectWithCustomSizedTexture(left + 152, top + 49, 407, 2, 100, 101, 512, 256);
-
         GL11.glEnable(GL11.GL_ALPHA_TEST);
         GlStateManager.disableBlend();
     }

src/main/resources/assets/unicopia/pages/chapter_1_gems.json

@@ -0,0 +1,9 @@
+{
+	"parent": "unicopia:preface",
+	"texture": "unicopia:chapter_1_gems",
+	"state": "unread",
+	"conditions": {
+		"type": "unicopia:compound_condition",
+		"conditions": []
+	}
+}