[Script] Lightning

--Creator: Bolodefchoco
--Made in: 17/12/2016
--Last update: 17/12/2016
--[[ Notes:
    Does:
        Invoca efeitos especiais semelhantes a raios
]]--

math.angle = function(x1,y1,x2,y2)
    return math.atan2(y2-y1,x2-x1)
end
math.dist = function(x1,y1,x2,y2)
    return (math.abs(x1-x2)^2 + math.abs(y1-y2)^2)^.5
end
table.random = function(x)
    return x[math.random(#x)]
end

draw = {}

draw.line = function(x1,y1,x2,y2,id)
    local dist = math.dist(x1,y1,x2,y2)
    local ang = math.angle(x1,y1,x2,y2)
    for i = 0,math.floor(dist/7) do
        local x = x1 + math.cos(ang) * (i * 7)
        local y = y1 + math.sin(ang) * (i * 7)
        tfm.exec.displayParticle(id,x,y,math.random() * ((3/10)/2),math.random() * ((3/10)/2))
    end
end

draw.ray = function(x1,y1,x2,y2)
    local particles = table.random({0,1,2,9})
    local dist = math.dist(x1,y1,x2,y2)
    local ang = math.angle(x1,y1,x2,y2)
    local randDist = function()
        return math.random() * 25 + 25
    end
    local randAng = function()
        return math.pi/(math.random() * 450 + 40)
    end

    local w = {{x1,y1}}

    local t = 0
    local randAngle = randAng() * ((dist - t)/70)
    local z = table.random({-1,1})
    local v = ang + randAngle * z

    local randDistance = randDist()
    while randDistance < dist-t do
        t = t + randDistance
        local x = x1 + math.cos(v) * t
        local y = y1 + math.sin(v) * t
        w[#w+1] = {x,y}

        randDistance = randDist()
        randAngle = randAng() * ((dist - t)/70)
        z = z * -1
        v = ang + randAngle * z
    end

    w[#w+1] = {x2,y2}

    for i = 1,#w - 1 do
        local w1 = w[i]
        local w2 = w[i+1]
        draw.line(w1[1],w1[2],w2[1],w2[2],particles)
    end
end