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Lua Example - Simple Counter - Solar2d Typing CST Test

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Lua Example - Simple Counter — Solar2d Code

A simple Solar2D Lua script to increment and decrement a counter displayed on the screen.

-- main.lua
local count = 0
local counterText = display.newText("Count: 0", display.contentCenterX, 100, native.systemFont, 40)

local function updateCount(delta)
	count = count + delta
	counterText.text = "Count: " .. count
end

local incButton = display.newText("+", display.contentCenterX - 50, 200, native.systemFont, 50)
incButton:addEventListener("tap", function() updateCount(1) end)

local decButton = display.newText("-", display.contentCenterX + 50, 200, native.systemFont, 50)
decButton:addEventListener("tap", function() updateCount(-1) end)

Solar2d Language Guide

Solar2D (formerly Corona SDK) is a free, open-source, cross-platform 2D game and app development framework using Lua scripting. It focuses on rapid development and performance for mobile, desktop, and HTML5 applications.

Primary Use Cases

  • ▸2D mobile games
  • ▸Educational apps and interactive media
  • ▸Prototyping and game jams
  • ▸Casual games for iOS/Android
  • ▸HTML5 browser-based apps

Notable Features

  • ▸Lua scripting for all game/app logic
  • ▸Fast 2D rendering with hardware acceleration
  • ▸Physics engine integration (Box2D)
  • ▸Cross-platform support (iOS, Android, Windows, macOS, HTML5)
  • ▸Extensive plugin ecosystem for ads, analytics, and native features

Origin & Creator

Originally developed as Corona SDK by Ansca Mobile in 2009, it was later renamed Solar2D and made open-source in 2020.

Industrial Note

Solar2D is popular for rapid 2D mobile development, small-scale games, casual apps, and educational tools where lightweight Lua scripting and cross-platform deployment are valued.

More Solar2d Typing Exercises

Solar2D Lua Example - Moving ObjectSolar2D Lua Example - Touch DragSolar2D Lua Example - Simple ButtonSolar2D Lua Example - Fade In/OutSolar2D Lua Example - Simple PhysicsSolar2D Lua Example - Sprite AnimationSolar2D Lua Example - Timer EventSolar2D Lua Example - Simple SceneSolar2D Lua Example - Audio Play

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