在 LÖVE 加入場景(Stage)的概念

前言

製作遊戲時，往往會需要許多 Stage，針對不同的主題設計，在必要的時候才呈現適合的 Stage，在 Flash 裡面亦同。而在 LÖVE 裡面，要加入 Stage 也是非常簡單的事情。

 

範例檔案下載

stages.love

 

操作說明

滑鼠滾輪下：下一個 stage

滑鼠滾輪上：上一個 stage

 

Screenshot

 

程式碼(都在範例檔案內)

main.lua

require("lua/stages.lua")

function love.load()

    stage = 1

    stages = {

        [1] = Stage1.create(),

        [2] = Stage2.create(),

        [3] = Stage3.create()

    }

end

function love.draw()

    love.graphics.print("Stage: " .. stage, 0, 0)

    love.graphics.print("Mousewheel: change stage.", 0, 15)

    stages[stage]:draw()

end

function love.mousepressed(x, y, button)

    if button == "wd" then

        stage = stage + 1

        if stage > 3 then stage = 3 end

    end

    if button == "wu" then

        stage = stage - 1

        if stage < 1 then stage = 1 end

    end

end

 

lua/stages.lua

Stage1 = {}

Stage1.__index = Stage1

function Stage1.create()

    local stage = {}

    setmetatable(stage, Stage1)

    return stage

end

function Stage1:draw()

    love.graphics.setBackgroundColor(255, 0, 0)

    love.graphics.print("This is the stage1.", 100, 100)

end

Stage2 = {}

Stage2.__index = Stage2

function Stage2.create()

    local stage = {}

    setmetatable(stage, Stage2)

    return stage

end

function Stage2:draw()

    love.graphics.setBackgroundColor(0, 255, 0)

    love.graphics.print("This is the stage2.", 200, 200)

end

Stage3 = {}

Stage3.__index = Stage3

function Stage3.create()

    local stage = {}

    setmetatable(stage, Stage3)

    return stage

end

function Stage3:draw()

    love.graphics.setBackgroundColor(0, 0, 255)

    love.graphics.print("This is the stage3.", 300, 300)

end