[WIP] Animation system

[stilnat]

Summary

Early PR to keep track of what I've to do still and let other experiment with it. All features implemented are working in a separate environment from the main game since it needs a lot of testing and resetting, and I did not want to worry about modifying the current code and current human prefab which has issues for animation.

This PR intends to implement the following :

• interacting, holding, picking up, placing and throwing items all in a believable manner.
• Sitting
• Crawling
• hitting with a few weapons and fists

And make all of it work together.

It comes with this WIP design doc : https://docs.google.com/document/d/11wd4HigSu5Tn3ioCaafTzBFh7I_xzBOF/edit

PR checklist

• The game builds properly without errors.

• No unrelated changes are present.

• No "trash" files are committed.

• Relevant code is documented.

• Update the related GitBook document, or create a new one if needed.

Pictures/Videos)

Testing

Play with AnimationTests scene open.
What you can do :

• Switch intent : space
• Switch throw mode : r
• Throw : y
• When holding a gun in harm mode : right click to aim
• Grab body on the ground : g
• Sit when close to the chair : j
• Fire when aiming: e
• Crouch and crawl : use the bool parameters in the animator controller on dummyHuman

Changes

TODO

• remove throw as an intent, have throw work like aiming with a gun
• add body orienting when aiming with a thrown item
• make throwing item work on both arms
• Add crouching idle, crouching walk, crouching run animations
• fix weird rotation between intent changes
• fix gun aiming not getting to initial rotation when stopping to aim
• fix firing exception
• Don't fire if gun not in hand and aiming
• Add max strenght to throw items
• Add another two handed gun, another toolbox like item
• Add IK animations for screwdriver and wrench
• Add hold pose (animation override) for harm intent with gun (torso in diagonal)
• Add hold pose (torso straight, shoulder not moving) for most holds
• Fix rotating when sitting and interacting/picking up/ placing/aiming
• When sitting, only rotate torso and allow interactions in front
• Add hand poses for different holding types.
• fix update position constraint and rotation in holdcontroller, currently doesn't take into account character rotating while moving.
• Fix throw item with two hands
• stop aiming after throw
• Make grabbing body part smoother.
• Add grabbing position and movement

Related issues/PRs