Rewrite mine command

src/game/command.cr

@@ -43,29 +43,34 @@ module Game
       tile = world.map.get(@point).as(BuildingTile)
       building = tile.building
       mining = building.mining.as(Mining)
-      # deposit_tile = nearest_deposit(world, mining.resource.type)
-      # if deposit_tile
-      #   @holded = deposit_tile.dep.dec(mining.resource)
-      # end
+      deposit_tile = nearest_deposit(world, mining.resource.type)
+      if deposit_tile
+        @holded = deposit_tile.as(DepositTile).dep.dec(mining.resource)
+      end
       mining.ts
     end
 
     def finish(world : World)
       if @holded
-        # world.resources.inc(@holded)
+        holded = @holded.as(Resource)
+        world.resources.inc(holded.type, holded.amount)
       end
       world.push(MineCommand.new(@point))
     end
 
     def desc : String
-      sprintf "Mine `smth` from %d,%d", @point.x, @point.y
+      if @holded
+        sprintf "Mine %s from %d,%d", @holded.as(Resource).type, @point.x, @point.y
+      else
+        sprintf "Wait for resources at %d,%d", @point.x, @point.y
+      end
     end
 
-    # private def nearest_deposit(world : World, res_type : Resource::Type)
-    #   world.map.nearest_tile @point do |tile|
-    #     tile.is_a?(DepositTile) && tile.dep.type == res_type && tile.dep.cur > 0
-    #   end
-    # end
+    private def nearest_deposit(world : World, res_type : Resource::Type)
+      world.map.nearest_tile @point do |tile|
+        tile.is_a?(DepositTile) && tile.dep.type == res_type && tile.dep.cur > 0
+      end
+    end
   end
 
   # class BuildCrystalHarvesterCommand < Command

src/game/deposit.cr

@@ -12,14 +12,28 @@ class Game::Deposit
   getter cap
   getter cur
 
-  def inc(resource : Resource)
+  def inc(resource : Resource) : Resource
     check_res resource.type
-    @cur = Math.min(@cap, @cur + resource.amount)
+    if @cur + resource.amount <= @cap
+      @cur += resource.amount
+      Resource.new(resource.type, resource.amount)
+    else
+      res = Resource.new(resource.type, @cap - @cur)
+      @cur = @cap
+      res
+    end
   end
 
-  def dec(resource : Resource)
+  def dec(resource : Resource) : Resource
     check_res resource.type
-    @cur = Math.max(0, @cur - resource.amount)
+    if @cur >= resource.amount
+      @cur -= resource.amount
+      resource
+    else
+      res = Resource.new(resource.type, @cur)
+      @cur = 0
+      res
+    end
   end
 
   private def check_res(other_res_type : Resource::Type)

src/game/resources.cr

@@ -11,6 +11,10 @@ struct Game::Resource
 
   getter type
   getter amount
+
+  def with_amount(amount : Capacity) : self
+    self.new @type, amount
+  end
 end
 
 class Game::ResourceBag