|
|
| Line 1: |
Line 1: |
| − | {{#set:Name=clasp}}
| |
| − | {{#set:LOVE Version=Any}}
| |
| − | {{#set:Description=Tiny Lua class library}}
| |
| − | {{#set:Keyword=Class}}
| |
| | | | |
| − | Minimal Lua class library in 13 lines of code: https://github.com/evolbug/lua-clasp <br />
| |
| − | <source lang="lua">
| |
| − | class = require "clasp"
| |
| − |
| |
| − |
| |
| − | -- Basic class
| |
| − | Vector = class {
| |
| − | isVector = true; -- static values
| |
| − |
| |
| − | init = function(self, x, y) -- initializer function
| |
| − | self.x = x
| |
| − | self.y = y
| |
| − | end;
| |
| − | }
| |
| − |
| |
| − | a = Vector(10, 10)
| |
| − | print('Vector:', a.x, a.y, a.isVector)
| |
| − |
| |
| − |
| |
| − | -- Inheritance
| |
| − | Vector3 = Vector:extend {
| |
| − | init = function(self, x, y, z) -- function overriding
| |
| − | Vector.init(self, x, y) -- superclass method call
| |
| − | self.z = z
| |
| − | end;
| |
| − | }
| |
| − |
| |
| − | b = Vector3(1, 2, 3)
| |
| − | print('Vector3:', b.x, b.y, b.z, b.isVector)
| |
| − |
| |
| − |
| |
| − | -- Metamethods
| |
| − | Point = class {
| |
| − | init = function(self, x, y)
| |
| − | self.x = x
| |
| − | self.y = y
| |
| − | end;
| |
| − | __meta = { -- metamethod table
| |
| − | __tostring = function(self)
| |
| − | return 'Point('..tostring(self.x)..', '..tostring(self.y)..')'
| |
| − | end;
| |
| − | };
| |
| − | }
| |
| − |
| |
| − | c = Point(15, 25)
| |
| − | print(c)
| |
| − | </source>
| |
| − |
| |
| − |
| |
| − | [[Category:Libraries]]
| |
