mirror of
https://github.com/open-goal/jak-project
synced 2026-07-30 16:04:33 -04:00
Tyler Wilding
d1ece445d4
Relates to #1353 This adds no new functionality or overhead to the compiler, yet. This is the preliminary work that has: - added code to the compiler in several spots to flag when something is used without being properly required/imported/whatever (disabled by default) - that was used to generate project wide file dependencies (some circulars were manually fixed) - then that graph underwent a transitive reduction and the result was written to all `jak1` source files. The next step will be making this actually produce and use a dependency graph. Some of the reasons why I'm working on this: - eliminates more `game.gp` boilerplate. This includes the `.gd` files to some extent (`*-ag` files and `tpage` files will still need to be handled) this is the point of the new `bundles` form. This should make it even easier to add a new file into the source tree. - a build order that is actually informed from something real and compiler warnings that tell you when you are using something that won't be available at build time. - narrows the search space for doing LSP actions -- like searching for references. Since it would be way too much work to store in the compiler every location where every symbol/function/etc is used, I have to do ad-hoc searches. By having a dependency graph i can significantly reduce that search space. - opens the doors for common shared code with a legitimate pattern. Right now jak 2 shares code from the jak 1 folder. This is basically a hack -- but by having an explicit require syntax, it would be possible to reference arbitrary file paths, such as a `common` folder. Some stats: - Jak 1 has about 2500 edges between files, including transitives - With transitives reduced at the source code level, each file seems to have a modest amount of explicit requirements. Known issues: - Tracking the location for where `defmacro`s and virtual state definitions were defined (and therefore the file) is still problematic. Because those forms are in a macro environment, the reader does not track them. I'm wondering if a workaround could be to search the reader's text_db by not just the `goos::Object` but by the text position. But for the purposes of finishing this work, I just statically analyzed and searched the code with throwaway python code.
120 lines
3.8 KiB
Common Lisp
120 lines
3.8 KiB
Common Lisp
;;-*-Lisp-*-
|
|
(in-package goal)
|
|
(bundles "ENGINE.CGO" "GAME.CGO")
|
|
|
|
(require "engine/math/vector.gc")
|
|
(require "engine/physics/trajectory-h.gc")
|
|
(require "engine/debug/debug-h.gc")
|
|
|
|
;; name: trajectory.gc
|
|
;; name in dgo: trajectory
|
|
;; dgos: GAME, ENGINE
|
|
|
|
;; DECOMP BEGINS
|
|
|
|
(defmethod eval-position! ((this trajectory) (time float) (result vector))
|
|
"Evaluate the position of the object at a give time"
|
|
(set! (-> result quad) (-> this initial-position quad))
|
|
(+! (-> result x) (* time (-> this initial-velocity x)))
|
|
(+! (-> result y) (* time (-> this initial-velocity y)))
|
|
(+! (-> result z) (* time (-> this initial-velocity z)))
|
|
(+! (-> result y) (* 0.5 time time (-> this gravity)))
|
|
result
|
|
)
|
|
|
|
(defmethod eval-velocity! ((this trajectory) (time float) (result vector))
|
|
"Evaluate the velocity of the object at a given time"
|
|
(set! (-> result quad) (-> this initial-velocity quad))
|
|
(+! (-> result y) (* time (-> this gravity)))
|
|
result
|
|
)
|
|
|
|
(defmethod setup-from-to-duration! ((this trajectory) (from vector) (to vector) (duration float) (grav float))
|
|
"Set up a trajectory that goes from->to in the given duration"
|
|
(set! (-> this initial-position quad) (-> from quad))
|
|
(set! (-> this gravity) grav)
|
|
(set! (-> this time) duration)
|
|
;; the velocity we need in xz to make it in time
|
|
(let ((xz-vel (/ (vector-vector-xz-distance to from) duration)))
|
|
;; our velocity will point along from -> to
|
|
(vector-! (-> this initial-velocity) to from)
|
|
;; but have magnitude that we calculated above.
|
|
(vector-xz-normalize! (-> this initial-velocity) xz-vel)
|
|
)
|
|
;; solve for the y velocity that makes us land at the right height.
|
|
(set! (-> this initial-velocity y)
|
|
(- (/ (- (-> to y) (-> from y)) duration) (* 0.5 duration (-> this gravity)))
|
|
)
|
|
0
|
|
(none)
|
|
)
|
|
|
|
(defmethod setup-from-to-xz-vel! ((this trajectory) (from vector) (to vector) (xz-vel float) (grav float))
|
|
"Set up a trajectory that goes from->to with the given velocity"
|
|
;; just solve for the duration and use the previous
|
|
(let ((duration (/ (vector-vector-xz-distance to from) xz-vel)))
|
|
(setup-from-to-duration! this from to duration grav)
|
|
)
|
|
0
|
|
(none)
|
|
)
|
|
|
|
(defmethod setup-from-to-y-vel! ((this trajectory) (from vector) (to vector) (y-vel float) (grav float))
|
|
"Set up a trajectory with the given initial y velocity."
|
|
(let* ((f0-0 y-vel)
|
|
(f1-3 (- (* f0-0 f0-0) (* 2.0 (- (-> from y) (-> to y)) grav)))
|
|
(f0-3 900.0)
|
|
)
|
|
(when (>= f1-3 0.0)
|
|
(let ((f0-4 (sqrtf f1-3)))
|
|
(set! f0-3 (fmax (/ (- (- y-vel) f0-4) grav) (/ (+ (- y-vel) f0-4) grav)))
|
|
)
|
|
)
|
|
(setup-from-to-duration! this from to f0-3 grav)
|
|
)
|
|
0
|
|
(none)
|
|
)
|
|
|
|
(defmethod setup-from-to-height! ((this trajectory) (arg0 vector) (arg1 vector) (arg2 float) (arg3 float))
|
|
"Setup a trajectory that reaches a given height"
|
|
(let* ((f1-2 (+ arg2 (fmax (-> arg0 y) (-> arg1 y))))
|
|
(f1-5 (* 2.0 (- (-> arg0 y) f1-2) arg3))
|
|
(f0-3 4096.0)
|
|
)
|
|
(if (< 0.0 f1-5)
|
|
(set! f0-3 (sqrtf f1-5))
|
|
)
|
|
(setup-from-to-y-vel! this arg0 arg1 f0-3 arg3)
|
|
)
|
|
0
|
|
(none)
|
|
)
|
|
|
|
(defmethod debug-draw! ((this trajectory))
|
|
"Draw the trajectory"
|
|
(let ((prev-pos (new 'stack-no-clear 'vector))
|
|
(pos (new 'stack-no-clear 'vector))
|
|
(num-segments 10)
|
|
)
|
|
(set! (-> pos quad) (-> this initial-position quad))
|
|
(dotimes (s2-0 num-segments)
|
|
(set! (-> prev-pos quad) (-> pos quad))
|
|
(let ((t-eval (* (-> this time) (/ (+ 1.0 (the float s2-0)) (the float num-segments)))))
|
|
(eval-position! this t-eval pos)
|
|
)
|
|
(add-debug-line
|
|
#t
|
|
(bucket-id debug-no-zbuf)
|
|
prev-pos
|
|
pos
|
|
(new 'static 'rgba :r #xff :a #x80)
|
|
#f
|
|
(the-as rgba -1)
|
|
)
|
|
)
|
|
)
|
|
0
|
|
(none)
|
|
)
|