local ship = { entropy.loadtexture("data/ships/fighter/base.png") }
local glow = { entropy.loadtexture("data/ships/fighter/glow.png") }
local lights = { entropy.loadtexture("data/ships/fighter/lights.png") }

function shutdown ()
    entropy.deletetexture(ship[1])
    entropy.deletetexture(glow[1])
    entropy.deletetexture(lights[1])
end

function create ()
    return {
        glow = 0,
        velx = 0,
        vely = 0,
        lastlights = 0,
        lights = 0,
        energy = 1000
    }
end

function energy (data)
    return data.energy, 1000
end

function deplete (data, amount)
    data.energy = data.energy - amount
end

function boundingBox (data)
    return -43, -24, 41, 19
end

function act (data, multiplier, x, y, rotation)
    local regen = false
    data.lastlights = data.lastlights + multiplier
    if data.lastlights >= 3 then
        data.lastlights = 0
        data.lights = 0.5
        regen = true
    elseif data.lights > 0 then
        data.lights = data.lights - multiplier
        regen = true
    end

    data.energy = data.energy + 100 * multiplier
    if data.energy > 1000 then
        data.energy = 1000
    end

    return x + data.velx * multiplier, y + data.vely * multiplier, rotation, regen
end

function accelerate (data, multiplier, rotation)
    if multiplier > 0 then
        data.velx = data.velx + math.sin(rotation * (math.pi / 180)) * multiplier * 200
        data.vely = data.vely - math.cos(rotation * (math.pi / 180)) * multiplier * 200

        data.glow = data.glow + 1 * multiplier
        if data.glow > 1 then
            data.glow = 1
        end
    else
        data.glow = data.glow + 2 * multiplier
        if data.glow < 0 then
            data.glow = 0
        end
    end

    return true
end

function rotate (data, multiplier, rotation)
    return rotation + multiplier * 180, false
end

function render (data)
    entropy.rendertexture(ship[1], ship[2])
    entropy.rendertexture(glow[1], glow[2], data.glow)
    if data.lights > 0 then
        entropy.rendertexture(lights[1], lights[2])
    end
end

function velocity (data, rotation)
    return data.velx, data.vely
end

offset = 24