Created
November 27, 2012 20:02
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Enemy Class (example for OO-Lua)
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| --Enemy.lua | |
| local scene = scene | |
| local Enemy = {Instances={}}; scene.Enemy = Enemy | |
| --STATIC CLASS FUNCTIONS (self refers to Enemy, not enemy) | |
| function Enemy:New() | |
| --creates an enemy instance | |
| local enemy = display.newImage('image_name') | |
| enemy.show = self.show | |
| enemy.hide = self.hide | |
| enemy.attack = self.attack | |
| enemy.move = self.move | |
| table.insert(self.Instances, enemy) | |
| return enemy | |
| end | |
| function Enemy:Get() --Gets an available enemy instance | |
| local Instances = self.Instances | |
| if (not Instances[1]) then self:New() end | |
| return table.remove(Instances, 1) | |
| end | |
| function Enemy:Dispose(obj) --Makes an enemy-in-use available again | |
| table.insert(self.Instances, obj) | |
| end | |
| function Enemy:Show(config) --Gets/ shows an enemy in one call | |
| local obj = self:Get() | |
| obj:show(config) | |
| return obj | |
| end | |
| --NON-STATIC/ INSTANCE FUNCTIONS (self refers to enemy, not Enemy) | |
| function Enemy:show(config) | |
| --each enemy can show itself | |
| self.x, self.y = config.x, config.y | |
| self.isVisible = true | |
| end | |
| function Enemy:hide() | |
| --each enemy can hide/ return itself to the Instances array | |
| self.isVisible = false | |
| Enemy:Dispose(self) | |
| end | |
| function Enemy:attack() | |
| --each enemy can attack | |
| end | |
| function Enemy:move() | |
| --each enemy can move | |
| end | |
| --Pool 10 enemies at load-time | |
| for i=1,10 do Enemy:New() end | |
| return Enemy |
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