block inventories (backend)

src/logic/BlocksController.cpp

@@ -11,6 +11,7 @@
 #include "../util/timeutil.h"
 #include "../maths/fastmaths.h"
 #include "../items/Inventory.h"
+#include "../items/Inventories.h"
 
 #include "scripting/scripting.h"
 
@@ -147,3 +148,24 @@ void BlocksController::randomTick(int tickid, int parts) {
         }
 	}
 }
+
+int64_t BlocksController::createBlockInventory(int x, int y, int z) {
+	auto chunk = chunks->getChunkByVoxel(x, y, z);
+	if (chunk == nullptr) {
+		return 0;
+	}
+	int lx = x - chunk->x * CHUNK_W;
+	int lz = z - chunk->z * CHUNK_D;
+	auto inv = chunk->getBlockInventory(lx, y, lz);
+	if (inv == nullptr) {
+        auto indices = level->content->getIndices();
+        auto def = indices->getBlockDef(chunk->voxels[vox_index(lx, y, lz)].id);
+        int invsize = def->inventorySize;
+        if (invsize == 0) {
+            return 0;
+        }
+		inv = level->inventories->create(invsize);
+        chunk->addBlockInventory(inv, lx, y, lz);
+	}
+    return inv->getId();
+}

src/logic/BlocksController.h

@@ -47,7 +47,7 @@ public:
     void update(float delta);
     void randomTick(int tickid, int parts);
     void onBlocksTick(int tickid, int parts);
-    uint createBlockInventory(int x, int y, int z);
+    int64_t createBlockInventory(int x, int y, int z);
 };
 
 #endif // LOGIC_BLOCKS_CONTROLLER_H_

src/logic/scripting/api_lua.h

@@ -299,11 +299,21 @@ static int l_inventory_add(lua_State* L) {
     return 1;
 }
 
+static int l_inventory_get_block(lua_State* L) {
+    lua::luaint x = lua_tointeger(L, 1);
+    lua::luaint y = lua_tointeger(L, 2);
+    lua::luaint z = lua_tointeger(L, 3);
+    int64_t id = scripting::blocks->createBlockInventory(x, y, z);
+    lua_pushinteger(L, id);
+    return 1;
+}
+
 static const luaL_Reg inventorylib [] = {
     {"get", l_inventory_get},
     {"set", l_inventory_set},
     {"size", l_inventory_size},
     {"add", l_inventory_add},
+    {"get_block", l_inventory_get_block},
     {NULL, NULL}
 };