minimal_example/init.lua at main · CryptechTest/minimal_example · GitHub

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local update = function(obj)
    core.chat_send_all("Updating wind turbine...")
    local wind = {
        velocity = 1,
        direction = 45
    }
    local wind_vel = wind.velocity
    local wind_dir = wind.direction

    if wind_vel > 0 then
        local arm = obj:get_bone_override('fan')
        if not arm then
            return
        end
        core.chat_send_all("Current arm bone override: " .. dump(arm))
        local yawRad = arm.rotation and arm.rotation.vec.y or 0
        local yawDeg = math.deg(yawRad)
        yawDeg = ((yawDeg + wind_dir) / 2) % 360
        local rot_arm = {
            x = 0,
            y = math.rad(yawDeg),
            z = 0
        }
        local speed = math.min(200, 100 * (wind_vel * 1))
        local rotor = obj:get_bone_override('rotor')
        if not rotor then
            return
        end
        core.chat_send_all("Current rotor bone override: " .. dump(rotor))
        local rollRad = rotor.rotation and rotor.rotation.vec.z or 0
        local rollDeg = math.deg(rollRad)
        rollDeg = (rollDeg + speed) % 360
        local rot_rotor = {
            x = 0,
            y = 0,
            z = math.rad(rollDeg)
        }
        obj:set_bone_override("fan", {
            rotation = {
                vec = rot_arm,
                absolute = true,
                interpolation = 1.0
            }
        })
        obj:set_bone_override("rotor", {
            rotation = {
                vec = rot_rotor,
                absolute = true,
                interpolation = 1.05
            }
        })
    end
end

local entity_def = {
    initial_properties = {
        physical = true,
        collide_with_objects = true,
        collisionbox = { -0.75, -0.5, -0.75, 0.75, 1.45, 0.75 },
        selectionbox = { -0.75, -0.5, -0.75, 0.75, 1.45, 0.75 },
        hp = 10,
        hp_max = 10,
        visual = "mesh",
        mesh = "minimal_example_wind_turbine.gltf",
        static_save = true,
        textures = { "minimal_example_wind_turbine.png" },
        use_texture_alpha = true,
        visual_size = {
            x = 0.667,
            y = 0.667
        },
        glow = 2,
    },
    on_step = function(self, dtime, moveresult)
        self.timer = (self.timer or 0) + dtime
        if self.timer >= 1 then
            self.timer = 0
            update(self.object)
        end
    end,
}

local item_def = {
    description = "Wind Turbine",
    inventory_image = "minimal_example_structure.png",
    on_place = function(itemstack, placer, pointed_thing)
        if pointed_thing.type ~= "node" then
            return itemstack
        end
        local pos = pointed_thing.above
        local obj = core.add_entity(pos, "minimal_example:wind_turbine")
        if obj and placer then
            obj:set_yaw(placer:get_look_horizontal())
        end
        return itemstack
    end
}

core.register_entity("minimal_example:wind_turbine", entity_def)

core.register_craftitem("minimal_example:wind_turbine", item_def)