add inventory.get_uses, inventory.use, item.uses & update base:bazalt_breaker

res/content/base/items/bazalt_breaker.json

@@ -1,4 +1,5 @@
 {
     "icon-type": "sprite",
-    "icon": "items:bazalt_breaker"
+    "icon": "items:bazalt_breaker",
+    "uses": 100
 }

res/content/base/scripts/bazalt_breaker.lua

@@ -1,3 +1,4 @@
-function on_block_break_by(x, y, z, p)
+function on_block_break_by(x, y, z, pid)
     block.set(x, y, z, 0, 0)
+    inventory.use(player.get_inventory(pid))
 end

res/scripts/stdmin.lua

@@ -497,3 +497,28 @@ end
 function file.prefix(path)
     return path:match("^([^:]+)")
 end
+
+function inventory.get_uses(invid, slot)
+    local uses = inventory.get_data(invid, slot, "uses")
+    if uses == nil then
+        return item.uses(inventory.get(invid, slot))
+    end
+    return uses
+end
+
+
+function inventory.use(invid, slot)
+    local itemid, count = inventory.get(invid, slot)
+    if itemid == nil then
+        return
+    end
+    local item_uses = inventory.get_uses(invid, slot)
+    if item_uses == nil then
+        return
+    end
+    if item_uses == 1 then
+        inventory.set(invid, slot, itemid, count - 1)
+    elseif item_uses > 1 then
+        inventory.set_data(invid, slot, "uses", item_uses - 1)
+    end
+end