add acceleration, deceleration and turning speed
fs: improve image files format, storage and handling
fs: move pic nr field to pics struct instead of obj where it belongs
drw: align upper drawing boundary to scaled pixels
drw: fix right/bottom boundaries for drawing too low
fs: allow comments in db files, comment sce.db
util: fix erealloc always clearing extra space even if shrinking buffer
reimplement pathfinding and movement
update sce.db and sprite generation utils
fs: rework sprite loading to avoid redundancy
update map format to use tileset indices for terrain
add utils/sctile: terrain tile extraction
add utils/grp.c: grp graphics extraction
rename rc to utils and extract to genspr
extract: update offsets and add more sprites
update asset extraction scripts and add a script for drone graphics
drw: correctly take into account simultaneous bounding on multiple borders
drw: fix not taking into account high scaling in boundpic
drw: reimplement compose using boundpic and drawpic's sematics
drw: fix vertical panning beyond map
drw: fix wrongly scaling pic width in broundpic
fs: fix not reading all rows and make loaddb semantics more consistent
drw: refactor drawpic, make it more comprehensible
ai: bound check setblk to avoid out of bounds with path map