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https://github.com/open-goal/jak-project
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Hat Kid
49 lines
1.3 KiB
Common Lisp
49 lines
1.3 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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;; DECOMP BEGINS
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;; dyanamics contain gravity properties
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(deftype dynamics (basic)
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((name basic)
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(gravity-max meters)
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(gravity-length meters)
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(gravity vector :inline)
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(gravity-normal vector :inline)
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(walk-distance meters)
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(run-distance meters)))
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(defun time-to-apex ((arg0 float) (arg1 float))
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"How many ticks it takes to reach the apex of a ballistic trajectory."
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(the int (/ arg0 (- (vel-tick arg1)))))
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(defun time-to-ground ((arg0 float) (arg1 float) (arg2 float))
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"How many ticks it takes to reach the ground for a ballistic trajectory."
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(let ((f0-0 0.0)
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(v0-0 0))
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;; actually integrate forward, just like the game will do so we're exact.
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(while (< (- arg2) f0-0)
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(set! arg0 (- arg0 (/ arg1 300)))
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(+! f0-0 (/ arg0 300))
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(+! v0-0 1))
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v0-0))
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;; the default dynamics of the world.
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(define *standard-dynamics*
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(new 'static
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'dynamics
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:name 'standard
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:gravity-max
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GRAVITY_MAX
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:gravity-length
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GRAVITY_AMOUNT
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:gravity
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(new 'static 'vector :x 0.0 :y GRAVITY_AMOUNT :z 0.0 :w 1.0)
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:gravity-normal
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(new 'static 'vector :x 0.0 :y 1.0 :z 0.0 :w 1.0)
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:walk-distance (meters 2)
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:run-distance (meters 5)))
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