doodle/pkg/collision
Noah 1f00af5741 Collision Detection Fix + Doodad CLI Fixes
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.
2024-05-27 15:14:00 -07:00
..
actor_mock.go Collision Detection Fix + Doodad CLI Fixes 2024-05-27 15:14:00 -07:00
actor_offset.go Collision Detection Fix + Doodad CLI Fixes 2024-05-27 15:14:00 -07:00
actor_offset_test.go Collision Detection Fix + Doodad CLI Fixes 2024-05-27 15:14:00 -07:00
actors_test.go Collision Detection Fix + Doodad CLI Fixes 2024-05-27 15:14:00 -07:00
bounding_rect.go Collision Box Updates 2021-06-02 20:50:28 -07:00
collide_actors.go Collision Box Updates 2021-06-02 20:50:28 -07:00
collide_level.go Collision Detection Fix + Doodad CLI Fixes 2024-05-27 15:14:00 -07:00
collide_test.go Rename Go module 2022-09-24 15:17:25 -07:00
debug_box.go Cut lib/render into its own package, change all imports 2019-12-22 18:21:58 -08:00
level_test.go Collision Detection Fix + Doodad CLI Fixes 2024-05-27 15:14:00 -07:00