citybuilder [epics] - v1 basic, v2 ar setup, v3 categories & controls

[kfarr]

business goal:

• create a small "polished" webxr app for q3 + avp with hands control as primary input
• show example of workflow from gltf to glb to app
• provide a simpler alternative compared to 3dstreet for playing with urban planning concepts
• bring spirit of legacy a-frame city builder into mixed reality
• provide a companion app for coloring book back page

v1 - basic - tiles only

• - AG same object in cell as selected, rotate upon click rotate or replace tiles when triggering in cell with existing value #16
• - AG replace (don't add to grid stack) there should not exist two keys of the same grid coordinates  #15
• - KF - remove duplicate buildings without bases
• - bug fix double press bug: clicking one controller also acts as a trigger for the other controller #23
• - KF hands controls - as a user i should be able to use this in hmd without a controller (on q3 or avp). I point my left hand and it creates a ray (like laser controls) and with my right hand I use my index and thumb to "select" and indicate placing an item in the grid cursor location (or rotating, etc)
• - KF show only ground-tiles that should snap (based on category or bounding box -1, -1 to 1, 1 such as) -- filter out "free place" props for now like vehicles, individual trees, etc.
• - KF or AG - idea -- bulldozer? blank tile? - as a user I want a way to clear a tile - could this be a special "blank" tile? or maybe I "hold down" on the tile for 1 or 2 seconds and it then explodes?

v2 - AR setup mode (for Q3 and AVP HMD)

• - ability to pinch, drag and release city hall to set anchor for city grid allow vr / ar users to change anchor change location #17
• - instructions "Place your city Hall to begin building." and pinch, drag, release
• - city hall placed on pedestal relative to y height of user initiated session
• - pinching motion artistic spherical embellishment and sfx (see image)
• - updated landing page "start ar passthru" and "start vr immersive" or alternative option "send to device"
• - notify for anchor creation, fail -- add xr mode for notify component similar to "lower third" style quest os bar. note -- what text to use? troika? built-in?
• - music - kf has some picked out on music #11

v3 - free place props

• - AG question / research: how to deal with props, vehicles etc free-placed models that do not snap: (a) place within tile as children? (b) or global props relative to origin? or (c) ?
• - in any case, replacing (or deleting) a tile should delete all of the free-placed models located within this tile region

v3 - category and nicer controls

• - implement category switcher
• - define categories
• - define method to define categories
• - new control design (category name switch vertically)
• - instead of whiteboard, billboard
• - change the scale of cells (larger or smaller models) ability to scale the size of cells up and down #22
• - increase or decrease the number of cells in the grid ability to increase number of grid cells #24

[Algorush]

KF or AG - idea -- bulldozer? blank tile? - as a user I want a way to clear a tile - could this be a special "blank" tile? or maybe I "hold down" on the tile for 1 or 2 seconds and it then explodes?

We can also add new UI element for this