mirror of
https://github.com/open-goal/jak-project
synced 2026-06-10 04:54:31 -04:00
water111
79d14af0b5
I finally read through all the joint code and wrote up some documentation. I think this will be really helpful when we try to understand all the functions in `process-drawable`, or if somebody ever wants to import/export animations. This switches all three games to using a new faster GOAL joint decompressor. It is on by default, but you can go back to the old version by setting `*use-new-decompressor*` to false. Also fix the log-related crash, fix the clock speed used in timer math.
74 lines
2.2 KiB
Common Lisp
74 lines
2.2 KiB
Common Lisp
;;-*-Lisp-*-
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(in-package goal)
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;; name: matrix-h.gc
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;; name in dgo: matrix-h
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;; dgos: ENGINE, GAME
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;; DECOMP BEGINS
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;; A 4x4 matrix, stored in row-major order
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;; some, but not all, functions assume that a matrix is an affine transform.
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;; others assume that the rotation has no scale or shear (and that its inverse is its transpose)
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(deftype matrix (structure)
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((data float 16)
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(vector vector 4 :inline :overlay-at (-> data 0))
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(quad uint128 4 :overlay-at (-> data 0))
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(trans vector :inline :overlay-at (-> data 12))
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)
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(:methods
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(transform-vectors! (_type_ (inline-array vector) (inline-array vector) int) none)
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)
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)
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;; A 3x3 matrix, stored in row-major order.
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;; NOTE: the rows each have an extra 4-bytes of padding
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;; so this is really a 3x4 matrix.
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;; this type is rarely used
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(deftype matrix3 (structure)
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((data float 12)
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(vector vector 3 :inline :overlay-at (-> data 0))
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(quad uint128 3 :overlay-at (-> data 0))
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)
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)
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;; a matrix stored using 16-bit integers.
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;; note that these usually have different scaling for the 4th row which
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;; contains the translation in an affine transform.
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;; so you generally should not unpack these to floats without knowing where they came from
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;; and how they were originally packed (for example, in tie/shrub)
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(deftype matrix4h (structure)
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((data int16 16)
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(vector4h vector4h 4 :inline :overlay-at (-> data 0))
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(long int64 4 :overlay-at (-> data 0))
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)
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)
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(defun matrix-copy! ((arg0 matrix) (arg1 matrix))
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"Copy arg1 to arg0"
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(declare (inline))
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(let ((v1-0 (-> arg1 quad 0))
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(a2-0 (-> arg1 quad 1))
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(a3-0 (-> arg1 quad 2))
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(a1-1 (-> arg1 trans quad))
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)
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(set! (-> arg0 quad 0) v1-0)
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(set! (-> arg0 quad 1) a2-0)
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(set! (-> arg0 quad 2) a3-0)
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(set! (-> arg0 trans quad) a1-1)
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)
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arg0
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)
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(defmacro new-stack-matrix0 ()
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"Get a new matrix on the stack that's set to zero."
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`(let ((mat (new 'stack-no-clear 'matrix)))
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(set! (-> mat quad 0) (the-as uint128 0))
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(set! (-> mat quad 1) (the-as uint128 0))
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(set! (-> mat quad 2) (the-as uint128 0))
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(set! (-> mat quad 3) (the-as uint128 0))
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mat
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)
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)
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