// LÖVE2D : lua-powered prototyping

Fast iteration, immediate feedback. Ideal for game jams and 8-bit RPGs.

-- conf.lua
function love.conf(t)
    t.window.title     = "GREEN RETRO"
    t.window.width     = 640
    t.window.height    = 480
    t.window.vsync     = 0
    t.window.resizable = false
end
-- main.lua
function love.draw()
    love.graphics.setColor(0, 0.8, 0, 1)
    love.graphics.rectangle("fill", 10, 10, 100, 100)
    love.graphics.print("> LÖVE2D retro engine ready", 20, 150)
end

$ love . → native performance, easy tilemaps, sfxr integration.

// USEFUL PATTERNS

Fixed timestep game loop

local dt_accum = 0
local TICK = 1/60
function love.update(dt)
    dt_accum = dt_accum + dt
    while dt_accum >= TICK do
        game_tick(TICK)
        dt_accum = dt_accum - TICK
    end
end

Retro palette via shader

-- phosphor green post-process
local shader = love.graphics.newShader([[
    vec4 effect(vec4 color, Image tex, vec2 uv, vec2 px) {
        vec4 c = Texel(tex, uv);
        float lum = dot(c.rgb, vec3(0.299, 0.587, 0.114));
        return vec4(0.0, lum * 1.2, 0.0, c.a) * color;
    }
]])
function love.draw()
    love.graphics.setShader(shader)
    -- draw scene
    love.graphics.setShader()
end

Key libraries

# AUDIO

▸ sfxr.lua – procedural SFX
▸ flux – tweening library
▸ love.audio.newSource – stream music

# MAPS / SPRITES

▸ STI – Simple Tiled Implementation
▸ anim8 – sprite animation
▸ bump.lua – AABB collision