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        // here we set / get the weight of the animation on this channel
        // for example if we have a walk leg animation and a upper body gun fire
        // animation we set both to weight 1
        // but if we have a transition between a walk animation in channel 0
        // and a running animation in channel 1 we lerp the weights
        void setChannelWeight(int channel, float weight);
        float getChannelWeight(int channel) const;

        // here we control what animation will run at which channel
        // by default the animation will start instantly when mounted and
        // demount itself when done
        // but this can be changed so it loop indefinetly or a set amount of times
        bool mountChannelAnimation(int channel, const std::string & name);
        void demountChannelAnimation(int channel);

        // here we can control the state of a channel
        // for example we can change at which frame a channel is at,
        // by default the speed is 1 frame each update cycle but this
        // can be controlled by a float value
        void setChannelFrame(int channel, int frame);
        void setChannelSpeed(int channel, float speed);

        // this only works after something has been mounted on this channel
        // and it returns the number of frames in the animation
        int getChannelLength(int channel) const;