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nx_ballistics.nx

buildroot/runtime/nx_ballistics.nx

7158 B143 linesdepth 0pulls 0 transitivereach 1 importersview sourcekind librarytopic ballistics

docs dependencies structs consts functions

about

nx_ballistics.nx -- Simulates projectile motion with and without air drag for ballistic trajectory visualization.

dependencies 0 imports · 1 importers

imports: none

imported by: nx_ballistics_gate.nx

structs

none

consts

2	const O_MAGIC_3141593: i64 = 3141593
3	const O_MAGIC_6283185: i64 = 6283185
4	const O_MAGIC_1570796: i64 = 1570796
5	const O_MAGIC_4096: i64 = 4096
13	const W: i64 = 256
14	const H: i64 = 256
15	const O_FB: i64 = 0
16	const N: i64 = 2 // 0 = vacuum, 1 = drag
17	const O_X: i64 = 524288
18	const O_Y: i64 = 524304
19	const O_VX: i64 = 524320
20	const O_VY: i64 = 524336
21	const O_GND: i64 = 524352 // grounded flags
22	const O_WX: i64 = 524368
23	const O_WY: i64 = 524376
24	const O_STEP: i64 = 524384
25	const O_RST: i64 = 524392 // post-landing pause counter
26	const O_TR: i64 = 524400 // trails: NTRAILN2 (display px)
27	const TRAILN: i64 = 160
28	const SC: i64 = 1000000
29	const V0: i64 = 200000 // launch speed
30	const GSTEP: i64 = 200 // gravity (velocity decrement / step)
31	const K: i64 = 1 // drag coefficient
32	const DSCALE: i64 = 566000000 // drag divisor (tunes drag ~25% of gravity at launch)
33	const LAUNCH: i64 = 959931 // 55 deg in micro-rad
34	const STEPS_PER_TICK: i64 = 8

functions

36	func rgb(r: i64, g: i64, b: i64) -> i64 { return (r & 255) \| ((g & 255) << 8) \| ((b & 255) << 16) } called by 1: render_impl
37	func isqrt(N0: i64) -> i64 { if N0<2 { return N0 } var x: i64=N0; var y: i64=(x+1)/2; while y<x { x=y; y=(x + N0/x)/2 } return x } called by 1: vmag
38	func sin_fixed(Xin: i64) -> i64 called by 4: cos_fixed init_impl vy0_of main
50	func cos_fixed(X: i64) -> i64 { return sin_fixed(X+O_MAGIC_1570796) } called by 2: init_impl vx0_of calls 1: sin_fixed
51	func vmag(vx: i64, vy: i64) -> i64 { return isqrt(vxvx+vyvy) } called by 2: acc_x acc_y calls 1: isqrt
53	func acc_x(vx: i64, vy: i64, drag: i64) -> i64 { if drag==0 { return 0 } return 0 - Kvmag(vx,vy)vx/DSCALE } called by 3: step_one_impl range_at flight calls 1: vmag
54	func acc_y(vx: i64, vy: i64, drag: i64) -> i64 { if drag==0 { return 0-GSTEP } return (0-GSTEP) - Kvmag(vx,vy)vy/DSCALE } called by 3: step_one_impl range_at flight calls 1: vmag
56	func putpx(base: i64, px: i64, py: i64, c: i64) -> i64 called by 2: disc render_impl
60	func disc(base: i64, px: i64, py: i64, r: i64, c: i64) -> i64 called by 1: render_impl calls 1: putpx
67	func clear_fb(base: i64, c: i64) -> i64 { let fb: i64=(base+O_FB) as i64; var i: i64=0; while i<W*H { fb[i]=c; i=i+1 } return 0 } called by 1: render_impl
69	func init_impl(base: i64) -> i64 called by 3: tick_impl init main calls 2: cos_fixed sin_fixed
83	func step_one_impl(base: i64) -> i64 called by 1: tick_impl calls 2: acc_x acc_y
97	func wx_to_px(base: i64, wx: i64) -> i64 { let WX: i64=(base+O_WX) as i64; return 4 + wx*248/WX[0] } called by 2: record_trail render_impl
98	func wy_to_py(base: i64, wy: i64) -> i64 { let WY: i64=(base+O_WY) as i64; return 250 - wy*242/WY[0] } called by 2: record_trail render_impl
99	func record_trail(base: i64) -> i64 called by 1: tick_impl calls 2: wx_to_px wy_to_py
106	func tick_impl(base: i64, cmd: i64) -> i64 called by 2: tick main calls 3: init_impl step_one_impl record_trail
118	func render_impl(base: i64) -> i64 called by 2: render main calls 6: clear_fb rgb putpx disc wx_to_px wy_to_py
137	func ww() -> i64 { return W } called by 1: main
138	func hh() -> i64 { return H } called by 1: main
139	func fb_off() -> i64 { return O_FB } called by 1: main
140	func init() -> i64 { return init_impl(0) } calls 1: init_impl
141	func tick(cmd: i64) -> i64 { return tick_impl(0, cmd) } calls 1: tick_impl
142	func render() -> i64 { return render_impl(0) } calls 1: render_impl
143	func mem_bytes() -> i64 { return O_TR + NTRAILN2*8 + O_MAGIC_4096 } called by 1: main