mirror of
https://github.com/open-goal/jak-project
synced 2026-06-14 14:28:25 -04:00
water111
c3b6e7eb7e
* some cleanup and docs on collide-touch and the tie extractor * temp * more updates * update ref tests * type fix * rest of collide shape * another set of updates
177 lines
6.5 KiB
Common Lisp
177 lines
6.5 KiB
Common Lisp
;;-*-Lisp-*-
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(in-package goal)
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;; name: collide-touch-h.gc
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;; name in dgo: collide-touch-h
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;; dgos: GAME, ENGINE
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;;;;;;;;;;;;;;;;;;;;;;;;
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;; Collide Touch
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;;;;;;;;;;;;;;;;;;;;;;;;
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;; The collide-touch system is used to track collisions between collide shapes during collision resolution.
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;; As the collision is resolved, shapes are added and removed from the touching list.
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;; Once collision is done solving, you can send events or inspect what you touched!
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;; A record of a primitive which is touching another, possibly including the triangle that is involved.
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(deftype touching-prim (structure)
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((cprim collide-shape-prim :offset-assert 0)
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(has-tri? symbol :offset-assert 4)
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(tri collide-tri-result :inline :offset-assert 16)
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)
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:method-count-assert 9
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:size-assert #x64
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:flag-assert #x900000064
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)
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;; A record of two primitives which are touching.
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(deftype touching-prims-entry (structure)
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((next touching-prims-entry :offset-assert 0)
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(prev touching-prims-entry :offset-assert 4)
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(allocated? symbol :offset-assert 8)
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(u float :offset-assert 12)
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(prim1 touching-prim :inline :offset-assert 16)
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(prim2 touching-prim :inline :offset-assert 128)
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)
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:method-count-assert 13
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:size-assert #xe4
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:flag-assert #xd000000e4
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(:methods
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(get-touched-prim (_type_ trsqv touching-shapes-entry) collide-shape-prim 9)
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(dummy-10 () none 10)
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(get-middle-of-bsphere-overlap (_type_ vector) vector 11)
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(get-touched-tri (_type_ collide-shape touching-shapes-entry) collide-tri-result 12)
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)
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)
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;; A pool of up to 64 touching primitives. There is a linked list of freed entries.
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(deftype touching-prims-entry-pool (structure)
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((head touching-prims-entry :offset-assert 0)
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(nodes touching-prims-entry 64 :inline :offset-assert 16)
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)
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:method-count-assert 13
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:size-assert #x3c10
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:flag-assert #xd00003c10
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(:methods
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(new (symbol type) _type_ 0)
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(alloc-node (_type_) touching-prims-entry 9)
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(get-free-node-count (_type_) int 10)
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(init-list! (_type_) none 11)
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(free-node (_type_ touching-prims-entry) touching-prims-entry 12)
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)
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)
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(defmethod init-list! touching-prims-entry-pool ((obj touching-prims-entry-pool))
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"Initialize all entries to be not allocated and in a linked list."
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(let ((prev (the-as touching-prims-entry #f)))
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(let ((current (the-as touching-prims-entry (-> obj nodes))))
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(set! (-> obj head) current)
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(countdown (a0-1 64)
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(set! (-> current prev) prev)
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(let ((next (&+ current 240)))
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(set! (-> current next) (the-as touching-prims-entry next))
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(set! (-> current allocated?) #f)
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(set! prev current)
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(set! current (the-as touching-prims-entry next))
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)
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)
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)
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(set! (-> prev next) #f)
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)
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(none)
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)
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(defmethod new touching-prims-entry-pool ((allocation symbol) (type-to-make type))
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"Allocate and initialize a new touching-prims-entry-pool"
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;; Note - the original code passed (-> type-to-make size) as an argument.
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;; however, the new method of structure doesn't have this argument.
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;; it uses the same value for the size so it doesn't really matter.
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(let ((obj (the touching-prims-entry-pool ((method-of-type structure new)
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allocation
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type-to-make
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;; (-> type-to-make size) see note
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)
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)))
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(init-list! obj)
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obj
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)
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)
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;; two collide shapes which are touching.
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;; This stores a list of primitive pairs which are touching.
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(deftype touching-shapes-entry (structure)
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((cshape1 collide-shape :offset-assert 0)
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(cshape2 collide-shape :offset-assert 4)
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(resolve-u int8 :offset-assert 8)
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(head touching-prims-entry :offset-assert 12)
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)
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:allow-misaligned
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:method-count-assert 18
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:size-assert #x10
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:flag-assert #x1200000010
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(:methods
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(dummy-9 (_type_) none 9)
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(get-touched-shape (_type_ collide-shape) collide-shape 10)
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(dummy-11 () none 11)
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(prims-touching? (_type_ collide-shape-moving uint) touching-prims-entry 12) ; this one!
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(prims-touching-action? (_type_ collide-shape collide-action collide-action) touching-prims-entry 13)
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(dummy-14 () none 14)
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(free-touching-prims-list (_type_) symbol 15)
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(get-head (_type_) touching-prims-entry 16)
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(get-next (_type_ touching-prims-entry) touching-prims-entry 17)
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)
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)
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;; A list of (up to) 32 pairs of colliding shapes
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(deftype touching-list (structure)
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((num-touching-shapes int32 :offset-assert 0)
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(resolve-u int8 :offset-assert 4)
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(touching-shapes touching-shapes-entry 32 :inline :offset-assert 8)
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)
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:method-count-assert 15
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:size-assert #x208
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:flag-assert #xf00000208
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(:methods
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(new (symbol type) _type_ 0)
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(add-touching-prims (_type_ collide-shape-prim collide-shape-prim float collide-tri-result collide-tri-result) none 9)
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(dummy-10 () none 10)
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(update-from-step-size (_type_ float) none 11)
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(send-events-for-touching-shapes (_type_) none 12)
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(get-shapes-entry (_type_ collide-shape collide-shape) touching-shapes-entry 13)
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(free-all-prim-nodes (_type_) none 14)
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)
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)
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(defmethod new touching-list ((allocation symbol) (type-to-make type))
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"See note in touching-prims-entry-pool"
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(let ((obj (the touching-list ((method-of-type structure new)
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allocation
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type-to-make
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;; (-> type-to-make size) see note
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)
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)))
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(set! (-> obj num-touching-shapes) 0)
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(set! (-> obj resolve-u) 0)
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obj
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)
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)
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(defmethod get-head touching-shapes-entry ((obj touching-shapes-entry))
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"Get the first pair of touching prims in a touching-shapes-entry"
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(-> obj head)
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)
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(defmethod get-next touching-shapes-entry ((obj touching-shapes-entry) (arg0 touching-prims-entry))
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"Get the next pair of touching prims."
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(-> arg0 next)
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)
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;; Allocate the global touching lists.
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;; We have a pool of prim pairs that can be used in any shape pair
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(define-perm *touching-prims-entry-pool* touching-prims-entry-pool (new 'global 'touching-prims-entry-pool))
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;; and a list of up to 32 shape pairs
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(define-perm *touching-list* touching-list (new 'global 'touching-list))
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