Charakterbewegungen hinzugefügt, Deko hinzugefügt, Kochrezepte angepasst

mods/futil/data_structures/sparse_graph.lua

@@ -0,0 +1,32 @@
+local f = string.format
+
+local SparseGraph = futil.class1()
+
+function SparseGraph:_init(size)
+	self._size = size or 0
+	self._adj_by_vertex = futil.DefaultTable(function()
+		return futil.Set()
+	end)
+end
+
+function SparseGraph:size()
+	return self._size
+end
+
+function SparseGraph:add_vertex()
+	self._size = self._size + 1
+end
+
+function SparseGraph:add_edge(a, b)
+	assert(1 <= a and a <= self._size, f("invalid vertex a %s", a))
+	assert(1 <= b and b <= self._size, f("invalid vertex b %s", b))
+	self._adj_by_vertex[a]:add(b)
+end
+
+function SparseGraph:has_edge(a, b)
+	assert(1 <= a and a <= self._size, f("invalid vertex a %s", a))
+	assert(1 <= b and b <= self._size, f("invalid vertex b %s", b))
+	return self._adj_by_vertex[a]:contains(b)
+end
+
+futil.SparseGraph = SparseGraph