Crafting definition in scripts

[oweals/minetest.git] / src / inventory.cpp

diff --git a/src/inventory.cpp b/src/inventory.cpp
index 3868686637b8f91588c6e3af78f2ecf64fe898d9..c7dd2a87b92325c12469f55b3257a6cd51cebed6 100644 (file)
--- a/src/inventory.cpp
+++ b/src/inventory.cpp
@@ -1153,5 +1153,85 @@ bool checkItemCombination(InventoryItem const * const *items, const ItemSpec *sp
 
        return true;
 }
+
+bool checkItemCombination(const InventoryItem * const * items,
+               const InventoryItem * const * specs)
+{
+       u16 items_min_x = 100;
+       u16 items_max_x = 100;
+       u16 items_min_y = 100;
+       u16 items_max_y = 100;
+       for(u16 y=0; y<3; y++)
+       for(u16 x=0; x<3; x++)
+       {
+               if(items[y*3 + x] == NULL)
+                       continue;
+               if(items_min_x == 100 || x < items_min_x)
+                       items_min_x = x;
+               if(items_min_y == 100 || y < items_min_y)
+                       items_min_y = y;
+               if(items_max_x == 100 || x > items_max_x)
+                       items_max_x = x;
+               if(items_max_y == 100 || y > items_max_y)
+                       items_max_y = y;
+       }
+       // No items at all, just return false
+       if(items_min_x == 100)
+               return false;
        
+       u16 items_w = items_max_x - items_min_x + 1;
+       u16 items_h = items_max_y - items_min_y + 1;
+
+       u16 specs_min_x = 100;
+       u16 specs_max_x = 100;
+       u16 specs_min_y = 100;
+       u16 specs_max_y = 100;
+       for(u16 y=0; y<3; y++)
+       for(u16 x=0; x<3; x++)
+       {
+               if(specs[y*3 + x] == NULL)
+                       continue;
+               if(specs_min_x == 100 || x < specs_min_x)
+                       specs_min_x = x;
+               if(specs_min_y == 100 || y < specs_min_y)
+                       specs_min_y = y;
+               if(specs_max_x == 100 || x > specs_max_x)
+                       specs_max_x = x;
+               if(specs_max_y == 100 || y > specs_max_y)
+                       specs_max_y = y;
+       }
+       // No specs at all, just return false
+       if(specs_min_x == 100)
+               return false;
+
+       u16 specs_w = specs_max_x - specs_min_x + 1;
+       u16 specs_h = specs_max_y - specs_min_y + 1;
+
+       // Different sizes
+       if(items_w != specs_w || items_h != specs_h)
+               return false;
+
+       for(u16 y=0; y<specs_h; y++)
+       for(u16 x=0; x<specs_w; x++)
+       {
+               u16 items_x = items_min_x + x;
+               u16 items_y = items_min_y + y;
+               u16 specs_x = specs_min_x + x;
+               u16 specs_y = specs_min_y + y;
+               const InventoryItem *item = items[items_y * 3 + items_x];
+               const InventoryItem *spec = specs[specs_y * 3 + specs_x];
+               
+               if(item == NULL && spec == NULL)
+                       continue;
+               if(item == NULL && spec != NULL)
+                       return false;
+               if(item != NULL && spec == NULL)
+                       return false;
+               if(!spec->isSubsetOf(item))
+                       return false;
+       }
+
+       return true;
+}
+
 //END