InventoryView now uses items instead of blocks (part I)

src/content/ItemDef.h

@@ -4,6 +4,7 @@
 #include <string>
 #include <glm/glm.hpp>
 
+#include "../graphics/UVRegion.h"
 #include "../typedefs.h"
 
 #define BLOCK_ITEM_SUFFIX ".item"
@@ -13,7 +14,9 @@ struct item_funcs_set {
 };
 
 enum class item_icon_type {
-    sprite, block,
+    none, // invisible (core:empty) must not be rendered
+    sprite, // textured quad: icon is `atlas_name:texture_name`
+    block, // block preview: icon is string block id
 };
 
 class ItemDef {
@@ -30,6 +33,7 @@ public:
     struct {
         itemid_t id;
         item_funcs_set funcsset {};
+        UVRegion iconRegion {0, 0, 1, 1};
     } rt;
 
     ItemDef(std::string name);

src/definitions.cpp

@@ -2,6 +2,7 @@
 
 #include <glm/glm.hpp>
 
+#include "content/ItemDef.h"
 #include "content/Content.h"
 #include "window/Window.h"
 #include "window/Events.h"
@@ -21,6 +22,9 @@ void setup_definitions(ContentBuilder* builder) { // Strange function, need to R
 	block->selectable = false;
 	block->model = BlockModel::none;
 	builder->add(block);
+
+    ItemDef* item = builder->createItem("core:empty");
+    item->iconType = item_icon_type::none;
 }
 
 void setup_bindings() {

src/frontend/InventoryView.cpp

@@ -10,17 +10,19 @@
 #include "../graphics/Batch2D.h"
 #include "../graphics/GfxContext.h"
 #include "../content/Content.h"
+#include "../content/ItemDef.h"
 #include "../maths/voxmaths.h"
 #include "../objects/Player.h"
 #include "../voxels/Block.h"
 
 InventoryView::InventoryView(
             int columns,
-            const ContentIndices* indices,
+            const Content* content,
             LevelFrontend* frontend,
-            std::vector<blockid_t> blocks) 
-            : indices(indices), 
-              blocks(blocks),
+            std::vector<itemid_t> items) 
+            : content(content),
+              indices(content->indices), 
+              items(items),
               frontend(frontend),
               columns(columns) {
 }
@@ -38,7 +40,7 @@ int InventoryView::getWidth() const {
 }
 
 int InventoryView::getHeight() const {
-    uint inv_rows = ceildiv(blocks.size(), columns);
+    uint inv_rows = ceildiv(items.size(), columns);
     return inv_rows * iconSize + (inv_rows-1) * interval + padding.y * 2;
 }
 
@@ -82,8 +84,8 @@ void InventoryView::actAndDraw(const GfxContext* ctx) {
 		subctx.depthTest(true);
 		subctx.cullFace(true);
         uint index = 0;
-		for (uint i = 0; i < blocks.size(); i++) {
-			Block* cblock = indices->getBlockDef(blocks[i]);
+		for (uint i = 0; i < items.size(); i++) {
+            ItemDef* item = indices->getItemDef(items[i]);
 			int x = xs + (iconSize+interval) * (index % columns);
 			int y = ys + (iconSize+interval) * (index / columns) - scroll;
             if (y < -int(iconSize+interval) || y >= int(viewport.getHeight())) {
@@ -96,13 +98,19 @@ void InventoryView::actAndDraw(const GfxContext* ctx) {
 				tint.b *= 1.2f;
 				if (Events::jclicked(mousecode::BUTTON_1)) {
                     if (consumer) {
-                        consumer(blocks[i]);
+                        consumer(items[i]);
                     }
 				}
 			} else {
 				tint = glm::vec4(1.0f);
 			}
+            switch (item->iconType) {
+                case item_icon_type::block: {
+                    Block* cblock = content->requireBlock(item->icon);
                     blocksPreview->draw(cblock, x, y, iconSize, tint);
+                    break;
+                }
+            }
             index++;
 		}
 	}

src/frontend/InventoryView.h

@@ -9,14 +9,16 @@
 
 class Assets;
 class GfxContext;
+class Content;
 class ContentIndices;
 class LevelFrontend;
 
-typedef std::function<void(blockid_t)> slotconsumer;
+typedef std::function<void(itemid_t)> slotconsumer;
 
 class InventoryView {
+    const Content* content;
     const ContentIndices* indices;
-    std::vector<blockid_t> blocks;
+    std::vector<itemid_t> items;
     slotconsumer consumer = nullptr;
     LevelFrontend* frontend;
 
@@ -29,9 +31,9 @@ class InventoryView {
 public:
     InventoryView(
         int columns,
-        const ContentIndices* indices, 
+        const Content* content, 
         LevelFrontend* frontend,
-        std::vector<blockid_t> blocks);
+        std::vector<itemid_t> items);
 
     virtual ~InventoryView();
 

src/frontend/hud.cpp

@@ -182,14 +182,11 @@ HudRenderer::HudRenderer(Engine* engine, LevelFrontend* frontend)
 	auto menu = gui->getMenu();
     auto content = level->content;
     auto indices = content->indices;
-    std::vector<blockid_t> blocks;
-    for (blockid_t id = 1; id < indices->countBlockDefs(); id++) {
-        const Block* def = indices->getBlockDef(id);
-        if (def->hidden)
-            continue;
-        blocks.push_back(id);
+    std::vector<itemid_t> items;
+    for (itemid_t id = 0; id < indices->countItemDefs(); id++) {
+        items.push_back(id);
     }
-    contentAccess.reset(new InventoryView(8, indices, frontend, blocks));
+    contentAccess.reset(new InventoryView(8, content, frontend, items));
     contentAccess->setSlotConsumer([=](blockid_t id) {
         level->player->chosenBlock = id;
     });