code wiki / _hdl_build / nx_ballistics_gate.nx

nx_ballistics_gate.nx

buildroot/runtime/_hdl_build/nx_ballistics_gate.nx

8636 B120 linesdepth 4pulls 5 transitivereach 0 importersview sourcekind gate/prooftopic ballistics
docsdependenciesstructsconstsfunctions

about

nx_ballistics_gate.nx -- NATIVE verify of the browser ballistics sim (base = mmap; SAME code runs in sovereign WASM). Integrates projectiles with the sim's own acceleration and validates the real ballistic laws: (a) range R = v^2 sin(2theta)/g is MAXIMUM at 45deg, (b) complementary angles (30/60, 15/75) give EQUAL range, (c) the range curve follows sin(2theta), (d) vacuum flight is parabolic-SYMMETRIC (apex at half the flight time), (e) air DRAG reduces the range. Liar-kill: a horizontal launch (theta=0) lands immediately (range ~ 0) -- vertical launch is essential, the sim isn't returning a constant. license_tier: ORIGINAL expect_exit: 0

dependencies 3 imports · 0 importers

nx_syscalls.nx nx_ballistics.nx nx_png.nx nx_ballistics_gate.nx

imports: nx_syscalls.nxnx_ballistics.nxnx_png.nx

imported by: nobody (leaf or entry point)

call flow from main pre-order; caps 40 nodes / depth 6 declared; ↻ = already shown

main sys_mmap g_w sys_write range_at vx0_of cos_fixed sin_fixed vy0_of sin_fixed ↻ acc_x vmag isqrt acc_y vmag ↻ flight vx0_of ↻ vy0_of ↻ acc_x ↻ acc_y ↻ g_n g_w ↻ sys_mmap ↻ sys_write ↻ iabs init_impl cos_fixed ↻ sin_fixed ↻ tick_impl init_impl ↻ step_one_impl acc_x ↻ acc_y ↻ record_trail wx_to_px wy_to_py render_impl clear_fb rgb putpx

structs

none

consts

none

functions

11func g_w(s: *u8) -> i64 { var n: i64=0; while s[n]!=(0 as u8){n=n+1} sys_write(1,s,n); return 0 }
called by 3: g_ng_rowmain calls 1: sys_write
12func g_n(v: i64) -> i64 { var m: i64=v; if m<0{g_w("-");m=0-m} let t:*u8=sys_mmap(24); var k:i64=0; if m==0{t[0]=48 as u8;k=1}; while m>0{t[k]=(48+(m%10)) as u8;m=m/10;k=k+1}; var i:i64=0; let o:*u8=sys_mmap(24); while i<k{o[i]=t[k-1-i];i=i+1}; sys_write(1,o,k); return 0 }
called by 1: main calls 3: g_wsys_mmapsys_write
13func g_row(id: *u8, ok: i64, pass: *i64) -> i64 { g_w(" "); g_w(id); g_w(": "); if ok==1 { g_w("OK\n"); pass[0]=pass[0]+1 } else { g_w("FAIL\n") } return 0 }
called by 1: main calls 1: g_w
14func iabs(x: i64) -> i64 { if x<0 { return 0-x } return x }
called by 1: main
16func vx0_of(thed: i64) -> i64 { return V0*cos_fixed(thed)/SC }
called by 2: range_atflight calls 1: cos_fixed
17func vy0_of(thed: i64) -> i64 { return V0*sin_fixed(thed)/SC }
called by 2: range_atflight calls 1: sin_fixed
20func range_at(thed: i64, drag: i64) -> i64
called by 1: main calls 4: vx0_ofvy0_ofacc_xacc_y
31func flight(thed: i64, ap: *i64, land: *i64) -> i64
called by 1: main calls 4: vx0_ofvy0_ofacc_xacc_y
41func main() -> i64
calls 17: sys_mmapg_wrange_atflightg_niabs+11