mirror of
https://github.com/open-goal/jak-project
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water111
98 lines
4.8 KiB
Common Lisp
98 lines
4.8 KiB
Common Lisp
;;-*-Lisp-*-
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(in-package goal)
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(bundles "ENGINE.CGO" "GAME.CGO")
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(require "engine/math/vector-h.gc")
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(require "engine/debug/debug-h.gc")
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(require "engine/math/math.gc")
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(defconstant DEBUG_SPHERE_SEC_AMT (#if (user? dass) 5 10))
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(defconstant DEBUG_SPHERE_SEC_H DEBUG_SPHERE_SEC_AMT)
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(defconstant DEBUG_SPHERE_SEC_W DEBUG_SPHERE_SEC_AMT)
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;; DECOMP BEGINS
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;; Three unit-sphere points per latitude/longitude cell: the cell point, its next point around the
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;; latitude ring, and its next point along the longitude.
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(deftype debug-sphere-table (basic)
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((point vector 300 :inline)))
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(defun make-debug-sphere-table ((table debug-sphere-table))
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"Fill table with a unit-sphere latitude/longitude grid. Each cell stores its current point, the
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next point around the same latitude, and the next point along the same longitude so drawing
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needs no trigonometry."
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(local-vars (longitude-index int))
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(let ((unit-center (new-stack-vector0))
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(unit-radius 1.0)
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(point-index 0))
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(set-vector! unit-center 0.0 0.0 0.0 1.0)
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(dotimes (latitude-index DEBUG_SPHERE_SEC_H)
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(let ((ring-radius (* unit-radius (sin (* (degrees (/ 180 DEBUG_SPHERE_SEC_H)) (the float latitude-index)))))
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(next-ring-radius (* unit-radius (sin (* (degrees (/ 180 DEBUG_SPHERE_SEC_H)) (the float (+ latitude-index 1))))))
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(cell-point (new-stack-vector0))
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(longitude-neighbor (new-stack-vector0))
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(latitude-neighbor (new-stack-vector0)))
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(set! (-> cell-point y)
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(+ (-> unit-center y) (* (cos (* (degrees (/ 180 DEBUG_SPHERE_SEC_H)) (the float latitude-index))) unit-radius)))
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(set! (-> longitude-neighbor y) (-> cell-point y))
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(set! (-> latitude-neighbor y)
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(+ (-> unit-center y) (* (cos (* (degrees (/ 180 DEBUG_SPHERE_SEC_H)) (the float (+ latitude-index 1)))) unit-radius)))
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(set! longitude-index 0)
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(while (< longitude-index DEBUG_SPHERE_SEC_W)
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(set! (-> cell-point x)
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(+ (-> unit-center x) (* (cos (* (degrees (/ 360 DEBUG_SPHERE_SEC_W)) (the float longitude-index))) ring-radius)))
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(set! (-> cell-point z)
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(+ (-> unit-center z) (* (sin (* (degrees (/ 360 DEBUG_SPHERE_SEC_W)) (the float longitude-index))) ring-radius)))
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(set! (-> longitude-neighbor x)
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(+ (-> unit-center x) (* (cos (* (degrees (/ 360 DEBUG_SPHERE_SEC_W)) (the float (+ longitude-index 1)))) ring-radius)))
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(set! (-> longitude-neighbor z)
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(+ (-> unit-center z) (* (sin (* (degrees (/ 360 DEBUG_SPHERE_SEC_W)) (the float (+ longitude-index 1)))) ring-radius)))
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(set! (-> latitude-neighbor x)
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(+ (-> unit-center x) (* (cos (* (degrees (/ 360 DEBUG_SPHERE_SEC_W)) (the float longitude-index))) next-ring-radius)))
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(set! (-> latitude-neighbor z)
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(+ (-> unit-center z) (* (sin (* (degrees (/ 360 DEBUG_SPHERE_SEC_W)) (the float longitude-index))) next-ring-radius)))
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(set! (-> table point point-index quad) (-> cell-point quad))
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(set! (-> table point (+ point-index 1) quad) (-> longitude-neighbor quad))
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(set! (-> table point (+ point-index 2) quad) (-> latitude-neighbor quad))
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(+! point-index 3)
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(+! longitude-index 1)))))
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0
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(none))
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(define *debug-sphere-table* (new 'static 'debug-sphere-table))
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(make-debug-sphere-table *debug-sphere-table*)
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(defun add-debug-sphere-from-table ((bucket bucket-id) (center vector) (radius float) (color rgba))
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"Draw a wireframe sphere in bucket by scaling the cached unit grid by radius, translating it to
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center, and drawing one latitude edge and one longitude edge from every grid cell in color."
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(rlet ((vf1 :class vf)
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(vf2 :class vf)
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(vf3 :class vf)
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(vf4 :class vf)
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(vf5 :class vf))
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(let ((cell-point (new-stack-vector0))
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(longitude-neighbor (new-stack-vector0))
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(latitude-neighbor (new-stack-vector0))
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(points (-> *debug-sphere-table* point)))
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(.lvf vf1 (&-> center quad))
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(.mov vf2 radius)
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(dotimes (i (* DEBUG_SPHERE_SEC_W DEBUG_SPHERE_SEC_H))
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(.lvf vf3 (&-> points 0 quad))
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(.lvf vf4 (&-> points 1 quad))
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(.lvf vf5 (&-> points 2 quad))
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(set! points (the-as (inline-array vector) (-> points 3)))
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(.mul.x.vf vf3 vf3 vf2)
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(.mul.x.vf vf4 vf4 vf2)
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(.mul.x.vf vf5 vf5 vf2)
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(.add.vf vf3 vf3 vf1)
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(.add.vf vf4 vf4 vf1)
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(.add.vf vf5 vf5 vf1)
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(.svf (&-> cell-point quad) vf3)
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(.svf (&-> longitude-neighbor quad) vf4)
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(.svf (&-> latitude-neighbor quad) vf5)
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(add-debug-line #t bucket cell-point longitude-neighbor color #f (the-as rgba -1))
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(add-debug-line #t bucket cell-point latitude-neighbor color #f (the-as rgba -1))))
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0
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(none)))
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