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  1. #1
    Junior Member koditalks's Avatar
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    Wiimote coding for position location lockdown- light sabre

    Just technical idea I have been thinking about. that I have posted on a few forums

    Just wondered. I have been working at shepperton film studios on a project which involved motion capture of actors movements and this got me thinking.
    Motion Capture-AI Library

    1) Perhaps you could have 2 individuals with sticks representing light sabres/ marker points(Null)placed at each end of sabre Hand/Top. Two individuals go through a week of fighting which is recording as data. Data fed into a software program that looks for patterns. ie. Attack move &d efence move to build up a library of null positions in global space of positions of sabre in relation to actions of individuals.

    For example, when attacker say Darth Vader goes to strike you the player, the software will be aware of your predictive learned response & position (bit like 3 dimensional chess).

    Also the player should in a way already be made aware of the forth coming attack move to a certain extent to byway of over pose/gesture by Darthleading to the attack to encourage player of the type of gesture.chop/slash/diagonal slash/stab. By this I mean encourage player to take up position that the predictive software library reason to be the likely location of the wii controller.

    Also pose of say Vader is placed in AI learn positions (leaving himself open say mid section) soto encourage player to strike that particular region.

    Software would be a) aware of the most likely on coming attack with defensive manoeuvre in the waiting cached.As with ie Kung Fu/Boxing individual open themselves up ie to encourage say a lower attack by you the player.

    It is these learned gestures in form of recorded/predictive data would tighten up the global positioning of the Wii controller or rather pin down it most likely global position in relation to the individual. I think this way will help in some way resolve the issue of lack of global position/location of the Wii controller.

    Issue of Force suggestion ,
    Again an individual momentarily will pull his fist back inch before he/she punches. The timing of this could be measured.
    Also Wii cursor acceleration accross the screen will also help pin down position & force velocity of sabre.

    Also the start postion (player pose by way of an example as in Wii sport)/ pose & calibration could be tired down to the training mode&calibration. By this I mean the sabre held from groin area pointing towards the screen,arms lock & calibrated to crosshair pointer towards top of top of screen.

    With the AI library I was thinking that the moves could be categorized first and put into folders. The director of the mocap should would instruct out Kendo trained actor to carry out an offensive strike and this would be recorded along with the variations of the defensive manoeuvre. So you end up with a set of known variable for each attack and defensive move. The game mechanics could be structure so as to force the player to carry out an instructed attack/defensive move in the training mode. in other words you have say only 10 attack moves & 10 defence blocks. A jedi Force graphic in the top corner could instruct you to begin with on the defensive position to adopt. including Feints.

    The AI library would end up visually looking a bit like a 3d primary swatch with intersecting spheres.

    With regard to the calibration/training mode a ghost like sabre could be used on the screen in which the play has to line up his/hers to. Press A when line up.


    As with the processing power. The graphic could be simplified in that you take the background plate from the death star corridor where vader fights obiwan. the in the 3d package tile it so you have a 360 degree image. The place your vader character in the middle and do a global illumination render for the lighting. The in-game camera would be pretty much fixed so the resulting rendered image of Vader in the various attack.defence positions will have the lighted pre-calculated before getting anywhere near the wii. The resulting image of vader could be broken down to head+main body and made in a sprite the arms+sabre could then be polygon models. At the time of rendering out vader in 3d environment a specular Pass could be carried out and this could the be animated as a simplified polygon over the texture mapped(taken from rendered image)polygon arms+sabre. This would cut down the processing power require.


    Back to locking down the position of the light sabre/wii controller. You could use a cheap stripped down nunchuk & a plastic tube/wii controller holder. The 2nd accelerometer would be position at the top of the tube ( 4.5ft approx) this would create a 2nd Null top & bottom of handle. The 2 Nulls would be compared Ie a defensive position from the Kendo stance to a horizontal block handle to right top of sabre to left would result in the bottom Null move faster & differently to the top Null & again if the block was reverse (handle to the left)
    . MkII sabre could incorporate the Nun-chuk joystick bit at the bottom. Or the accelerometer could be clipped to you chest to detect upper body movement/ including sensing duckink.

    There is a company that makes a light sabre attachment for the wii controller perhaps they should contact Lucas Arts or Nintendo could bring out a generic sword for these types of game & controller 2 could be used as a shield in say Prince of Persia style games.

    I have also posted this onto the Lucas Arts forum & will on Wii Talk

    Perhaps an open source games development group could be set up


    Also forgot to mention that the only other polygons would be in the scene would be in the form of the objects that Vader hurls towards you when you start getting too good. He could the boot you in the chest and the sabre light wipe to the next level, also the sabre light wipe could be used to reset the scene to a certain extent. It5 would be nice in the training mode to have that Ball thing taken from the film backplate and the ship interior at the backlplate.

    Also with regards to the light from sabre this could be as a separte layer or this colour influences the specular polygon on Vader and other Character/objects

    The backplate could be place on one polygon if necessary.

  2. #2
    Junior Member koditalks's Avatar
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    Additional points - Head Band peripheral

    In addition to the notes on the Wiimote location lockdown. It should also be categorized as to whether the player is left handed or right and an algorithm loaded or swap likely location and attack manoeuvre adjusted accordingly. I also mention about the sprite/polygon mix for vader. Perhaps now that the cost of the flash storage sd memory cards that slot in the front can be taken advantage of, in that a sequence say for a left handed attack or library of sequenced attack could be held on the chip a started to be retrieved following the dictation of the initiated defensive manoeuvre by the player. These sequence frames could be keyed in(key/matted/fill)over background/objects. as in TV visuals. EG these could run in the background and the route to say a point on landscape could be obscured momentarily by a gate or room in outhouse which would then allow for new sequence to pre-load. Also another thought that has springs to mind is that at the moment where the gfx processor in not maxed out could the game level design+characters be optimized so as to carry out non-display data processes or an algorithms written to process say AI scripts. Basically using the gfx processor in a neaky hidden way that would aid game play in some form.

    Anyway with the Wiimote the fact that the Wii can have upto four Wiimotes/players. Could you not take advantage of said channels when gameplay is restricted to 1 or 2 players when considering Wiimote/peripheral development, whether this be Light saber/sword device or head band for use in medal of honour type games to look around or others. Obviously if you are going to bring out a modified lightsabre/wiimote as with my notes earlier the IR on the end of the Wiimote will need to be moved or the end of the tube open. Also those extra channels for the other controllers may be used in a variety of ways which could lead to the rather interesting telemetry nodes place withing the room or . . .other areas.

  3. #3
    Habs Rule. Period. Waky Wii's Avatar
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    Additional points - Head Band peripheral


    In addition to the notes on the Wiimote location lockdown. It should also be categorized as to whether the player is left handed or right and an algorithm loaded or swap likely location and attack manoeuvre adjusted accordingly. I also mention about the sprite/polygon mix for vader. Perhaps now that the cost of the flash storage sd memory cards that slot in the front can be taken advantage of, in that a sequence say for a left handed attack or library of sequenced attack could be held on the chip a started to be retrieved following the dictation of the initiated defensive manoeuvre by the player. These sequence frames could be keyed in(key/matted/fill)over background/objects. as in TV visuals. EG these could run in the background and the route to say a point on landscape could be obscured momentarily by a gate or room in outhouse which would then allow for new sequence to pre-load. Also another thought that has springs to mind is that at the moment where the gfx processor in not maxed out could the game level design+characters be optimized so as to carry out non-display data processes or an algorithms written to process say AI scripts. Basically using the gfx processor in a neaky hidden way that would aid game play in some form.

    Anyway with the Wiimote the fact that the Wii can have upto four Wiimotes/players. Could you not take advantage of said channels when gameplay is restricted to 1 or 2 players when considering Wiimote/peripheral development, whether this be Light saber/sword device or head band for use in medal of honour type games to look around or others. Obviously if you are going to bring out a modified lightsabre/wiimote as with my notes earlier the IR on the end of the Wiimote will need to be moved or the end of the tube open. Also those extra channels for the other controllers may be used in a variety of ways which could lead to the rather interesting telemetry nodes place withing the room or . . .other areas.

    Just technical idea I have been thinking about. that I have posted on a few forums

    Just wondered. I have been working at shepperton film studios on a project which involved motion capture of actors movements and this got me thinking.
    Motion Capture-AI Library

    1) Perhaps you could have 2 individuals with sticks representing light sabres/ marker points(Null)placed at each end of sabre Hand/Top. Two individuals go through a week of fighting which is recording as data. Data fed into a software program that looks for patterns. ie. Attack move &d efence move to build up a library of null positions in global space of positions of sabre in relation to actions of individuals.

    For example, when attacker say Darth Vader goes to strike you the player, the software will be aware of your predictive learned response & position (bit like 3 dimensional chess).

    Also the player should in a way already be made aware of the forth coming attack move to a certain extent to byway of over pose/gesture by Darthleading to the attack to encourage player of the type of gesture.chop/slash/diagonal slash/stab. By this I mean encourage player to take up position that the predictive software library reason to be the likely location of the wii controller.

    Also pose of say Vader is placed in AI learn positions (leaving himself open say mid section) soto encourage player to strike that particular region.

    Software would be a) aware of the most likely on coming attack with defensive manoeuvre in the waiting cached.As with ie Kung Fu/Boxing individual open themselves up ie to encourage say a lower attack by you the player.

    It is these learned gestures in form of recorded/predictive data would tighten up the global positioning of the Wii controller or rather pin down it most likely global position in relation to the individual. I think this way will help in some way resolve the issue of lack of global position/location of the Wii controller.

    Issue of Force suggestion ,
    Again an individual momentarily will pull his fist back inch before he/she punches. The timing of this could be measured.
    Also Wii cursor acceleration accross the screen will also help pin down position & force velocity of sabre.

    Also the start postion (player pose by way of an example as in Wii sport)/ pose & calibration could be tired down to the training mode&calibration. By this I mean the sabre held from groin area pointing towards the screen,arms lock & calibrated to crosshair pointer towards top of top of screen.

    With the AI library I was thinking that the moves could be categorized first and put into folders. The director of the mocap should would instruct out Kendo trained actor to carry out an offensive strike and this would be recorded along with the variations of the defensive manoeuvre. So you end up with a set of known variable for each attack and defensive move. The game mechanics could be structure so as to force the player to carry out an instructed attack/defensive move in the training mode. in other words you have say only 10 attack moves & 10 defence blocks. A jedi Force graphic in the top corner could instruct you to begin with on the defensive position to adopt. including Feints.

    The AI library would end up visually looking a bit like a 3d primary swatch with intersecting spheres.

    With regard to the calibration/training mode a ghost like sabre could be used on the screen in which the play has to line up his/hers to. Press A when line up.


    As with the processing power. The graphic could be simplified in that you take the background plate from the death star corridor where vader fights obiwan. the in the 3d package tile it so you have a 360 degree image. The place your vader character in the middle and do a global illumination render for the lighting. The in-game camera would be pretty much fixed so the resulting rendered image of Vader in the various attack.defence positions will have the lighted pre-calculated before getting anywhere near the wii. The resulting image of vader could be broken down to head+main body and made in a sprite the arms+sabre could then be polygon models. At the time of rendering out vader in 3d environment a specular Pass could be carried out and this could the be animated as a simplified polygon over the texture mapped(taken from rendered image)polygon arms+sabre. This would cut down the processing power require.


    Back to locking down the position of the light sabre/wii controller. You could use a cheap stripped down nunchuk & a plastic tube/wii controller holder. The 2nd accelerometer would be position at the top of the tube ( 4.5ft approx) this would create a 2nd Null top & bottom of handle. The 2 Nulls would be compared Ie a defensive position from the Kendo stance to a horizontal block handle to right top of sabre to left would result in the bottom Null move faster & differently to the top Null & again if the block was reverse (handle to the left)
    . MkII sabre could incorporate the Nun-chuk joystick bit at the bottom. Or the accelerometer could be clipped to you chest to detect upper body movement/ including sensing duckink.

    There is a company that makes a light sabre attachment for the wii controller perhaps they should contact Lucas Arts or Nintendo could bring out a generic sword for these types of game & controller 2 could be used as a shield in say Prince of Persia style games.

    I have also posted this onto the Lucas Arts forum & will on Wii Talk

    Perhaps an open source games development group could be set up


    Also forgot to mention that the only other polygons would be in the scene would be in the form of the objects that Vader hurls towards you when you start getting too good. He could the boot you in the chest and the sabre light wipe to the next level, also the sabre light wipe could be used to reset the scene to a certain extent. It5 would be nice in the training mode to have that Ball thing taken from the film backplate and the ship interior at the backlplate.

    Also with regards to the light from sabre this could be as a separte layer or this colour influences the specular polygon on Vader and other Character/objects

    The backplate could be place on one polygon if necessary.


    Whoa That's like 18532025652 words! Can you summerize it for people that don't have enough time to read your novel?
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  4. #4
    I'm still alive! bilzar's Avatar
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    Quote Originally Posted by Waky Wii
    Whoa That's like 18532025652 words! Can you summerize it for people that don't have enough time to read your novel?

    lol seriously, I usually don't mind reading long posts, but this is TOO long... I'm sure it's great, but yeah... you mind summarizing?


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