Fix collision detection when an actor's hitbox is offset from 0,0:
* Actors having a hitbox that didn't begin at X,Y 0,0 used to experience
clipping issues with level geometry: because the game tracks their Position
(top left corner of their graphical sprite) and their target position wasn't
being correctly offset by their hitbox offset.
* To resolve the issue, an "ActorOffset" struct is added: you give it the
original game's Actor (with its offset hitbox) and it will record the offset
and give a mocked Actor for collision detection purposes: where the Position
and Target can be offset and where its Hitbox claims to begin at 0,0 matching
its offsetted Position.
* The translation between your original Actor and Offset Actor is handled at the
boundary of the CollidesWithGrid function, so the main algorithm didn't need
to be messed with and the game itself doesn't need to care about the offset.
Make some fixes to the doodad CLI tool:
* Fix palette colors being duplicated/doubled when converting from an image.
* The --palette flag in `doodad convert` now actually functions: so you can
supply an initial palette.json with colors and attributes to e.g. mark which
colors should be solid or fire and give them names. The palette.json doesn't
need to be comprehensive: it will be extended with new distinct colors as
needed during the conversion.
* Add new pixel attributes: SemiSolid and Slippery (the latter is WIP)
* SemiSolid pixels are only solid below the player character. You can walk on
them and up and down SemiSolid slopes, but can freely pass through from the
sides or jump through from below.
* Update the Palette Editor UI to replace the Attributes buttons: instead of
text labels they now have smaller icons (w/ tooltips) for the Solid,
SemiSolid, Fire, Water and Slippery attributes.
* Bugfix in Palette Editor: use cropped (24x24) images for the Tex buttons so
that the large Bubbles texture stays within its designated space!
* uix.Actor.SetGrounded() to also set the Y velocity to zero when an actor
becomes grounded. This fixes a minor bug where the player's Y velocity (due
to gravity) was not updated while they were grounded, which may eventually
become useful to allow them to jump down thru a SemiSolid floor. Warp Doors
needed a fix to work around the bug, to set the player's Grounded(false) or
else they would hover a few pixels above the ground at their destination,
since Grounded status paused gravity calculations.
Palette swatches gain a new property: Pattern.
Patterns are grayscale textures that the swatch color will sample
against when drawing pixels to the level, by taking the world coordinate
modulo a value inside the texture.
A few algorithms were tried (Screen, Overlay), this branch lands on one
that tries to cast the color from grayscale which comes out rather dark;
to get a patterned color to look black while still seeing the pattern,
the color needs to be as bright as #777 to get the effect.
* The `doodad` CLI tool got a lot of new commands:
* `doodad show` to verbosely print details about Levels and Doodads.
* `edit-level` and `edit-doodad` to update details about Levels and
Doodads, such as their Title, Author, page type and size, etc.
* Doodads gain a `Hidden bool` that hides them from the palette in
Editor Mode. The player character (Blue Azulian) is Hidden.
* Add some boolProps to the balance/ package and made a dynamic system
to easily configure these with the in-game dev console.
* Command: `boolProp list` returns available balance.boolProps
* `boolProp <name>` returns the current value.
* `boolProp <name> <true or false>` sets the value.
* The new boolProps are:
* showAllDoodads: enable Hidden doodads on the palette UI (NOTE:
reload the editor to take effect)
* writeLockOverride: edit files that are write locked anyway
* prettyJSON: pretty-format the JSON files saved by the game.
