DanceFloor.txt

--@name DanceFloor
--@author Sparky
--@shared

if SERVER then
wire.adjustInputs({"BPM"},{"normal"})
hook.add("input","",function(k,v)
    if k=="BPM" and v then
        net.start("BPM")
        net.writeDouble(v)
        net.send()
    end
end)
else

local function mix(a,b,t)
    return (b-a)*t+a
end

local function hash(x)
    return (math.sin(x*127.1)*43758.5453123)%1
end

local function noise(x)
    local fx = x%1
    local ix = x-fx
    return mix( hash( ix ), hash( ix+1 ), fx*fx*(3-2*fx))
end

local squaresize = 1024/8
local start = 0
local endsize = 1024-squaresize

local squaresize2 = squaresize/2
local start2 = endsize/2-squaresize2
local endsize2 = endsize/2+squaresize

local freq = 2
local lights = setmetatable({},{__index=function(t,k) t[k]=light.create(Vector(),300,5,Color(0,0,0)) return t[k] end})
local scr = chip()
render.createRenderTarget("floor")
hook.add("render","",function()
    scr = render.getScreenEntity()
    render.setRenderTargetTexture("floor")
    render.drawTexturedRectFast(0,0,512,512)
end)
hook.add("renderoffscreen","",function()
    render.selectRenderTarget("floor")
    local time = timer.curtime()*freq
    local i = 1
    for x=start, endsize, squaresize do
        for y=start, endsize, squaresize do
            local z = noise(i*100+time)
            local col = Color(z*70+250,0.8,0.8):hsvToRGB()
            render.setColor(col)
            render.drawRectFast(x, y, squaresize, squaresize)
            i = i + 1
            
            if i%4==0 then
                local wpos = scr:localToWorld(Vector((x+squaresize2-512)/512*189.791, (y+squaresize2-512)/512*189.791, 2))
                lights[i]:setPos(wpos)
                lights[i]:setColor(col)
                lights[i]:draw()
                
            end
        end
    end
    for x=start2, endsize2, squaresize2 do
        for y=start2, endsize2, squaresize2 do
            local z = noise(i*100+time)
            render.setColor(Color(z*70,0.8,0.8):hsvToRGB())
            render.drawRectFast(x, y, squaresize2, squaresize2)
            i = i + 1
        end
    end
    render.selectRenderTarget()
end)

hook.add("net","",function(n)
    if n=="BPM" then
        freq = net.readDouble()/60
    end
end)
end