nx_wasmfps.nx

buildroot/runtime/nx_wasmfps.nx

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docs dependencies structs consts functions

about

nx_wasmfps.nx -- FIRST-PERSON voxel world renderer, base-relative so the SAME code runs native (base = an mmap'd region -> PNG, eyeball-verifiable) and in WASM (base = 0 -> linear memory). Z-buffered, perspective, distance-culled, with trees; realism directional shading. Camera has a world POSITION (you walk/look), not orbit. JS owns trig + camera state and calls render(); wasm owns the world + the hardware-f32 math. World params are constants (fixed world, moving camera). license_tier: ORIGINAL

dependencies 1 imports · 1 importers

imports: nx_f32_hw.nx

imported by: nx_wasmfps_gate.nx

structs

none

consts

7	const O_MAGIC_65536: i64 = 65536
9	const W: i64 = 200
10	const H: i64 = 150
11	const HW: i64 = 100
12	const HH: i64 = 75
13	const ZFAR: i64 = 1073741824
14	const FOCAL: i64 = 150
15	const WN: i64 = 96 // world is WN x WN columns
16	const WSEED: i64 = 7
17	const WWATER: i64 = 3
18	const WMAXH: i64 = 14
19	const WLAT: i64 = 6
20	const VDIST: i64 = 26 // only draw columns within this Manhattan range of the camera
22	const O_FB: i64 = 0
23	const O_ZB: i64 = 240000 // WH8
24	const O_R: i64 = 480000
25	const O_RY: i64 = 480128
26	const O_RX: i64 = 480256
27	const O_V: i64 = 480384
28	const O_RV: i64 = 480416
29	const O_SX: i64 = 480448
30	const O_SY: i64 = 480512
31	const O_SD: i64 = 480576
32	const O_SOK: i64 = 480640
33	const O_PJ: i64 = 480704 // project out: x,y,d,ok
34	const O_DELTA: i64 = 481024 // per-column height edits, WN*WN i64 (block break/place)

functions

36	func imin(a: i64, b: i64) -> i64 { if a < b { return a } return b } called by 2: min3 fill_z
37	func imax(a: i64, b: i64) -> i64 { if a > b { return a } return b } called by 2: max3 fill_z
38	func iabs(a: i64) -> i64 { if a < 0 { return 0 - a } return a }
39	func min3(a: i64, b: i64, c: i64) -> i64 { return imin(a, imin(b, c)) } called by 1: fill_z calls 1: imin
40	func max3(a: i64, b: i64, c: i64) -> i64 { return imax(a, imax(b, c)) } called by 1: fill_z calls 1: imax
41	func clamp255(v: i64) -> i64 { if v < 0 { return 0 } if v > 255 { return 255 } return v } called by 1: shade
42	func fratio(num: i64, den: i64) -> i64 { return f32_div(f32_of(num), f32_of(den)) } called by 1: build_R calls 2: f32_div f32_of
44	func wlat(ix: i64, iz: i64) -> i64 called by 1: terrain_h
49	func terrain_h(base: i64, gx: i64, gz: i64) -> i64 called by 7: hN draw_col has_tree draw_tree terrain_at pick+1 calls 1: wlat
73	func hN(base: i64, gx: i64, gz: i64) -> i64 { return terrain_h(base, gx, gz) } called by 1: draw_col calls 1: terrain_h
74	func top_color(h: i64) -> i64 called by 1: draw_col
80	func side_color(h: i64) -> i64 called by 1: draw_col
85	func shade(lnx: i64, lny: i64, lnz: i64) -> i64 called by 1: draw_face calls 1: clamp255
90	func packc(col: i64, bright: i64) -> i64 called by 1: draw_face
97	func fill_z(base: i64, x0: i64, y0: i64, d0: i64, x1: i64, y1: i64, d1: i64, x2: i64, y2: i64, d2: i64, col: i64) -> i64 called by 1: draw_face calls 4: imax min3 imin max3
128	func project(base: i64, camx: i64, camy: i64, camz: i64, iwx: i64, iwy: i64, iwz: i64) -> i64 called by 1: box_corners calls 6: f32_sub f32_of m4_vec4 f32_int f32_mul f32_div
149	func box_corners(base: i64, camx: i64, camy: i64, camz: i64, x0: i64, y0: i64, z0: i64, sw: i64, sh: i64, sl: i64) -> i64 called by 2: draw_col draw_box calls 1: project
166	func draw_face(base: i64, a: i64, b: i64, c: i64, dd: i64, lnx: i64, lny: i64, lnz: i64, col: i64) -> i64 called by 2: draw_col draw_box calls 3: packc shade fill_z
180	func draw_col(base: i64, camx: i64, camy: i64, camz: i64, gx: i64, gz: i64) -> i64 called by 1: render_at calls 6: terrain_h box_corners draw_face top_color hN side_color
190	func has_tree(base: i64, gx: i64, gz: i64) -> i64 called by 1: render_at calls 1: terrain_h
199	func draw_box(base: i64, camx: i64, camy: i64, camz: i64, x0: i64, y0: i64, z0: i64, sw: i64, sh: i64, sl: i64, col: i64) -> i64 called by 1: draw_tree calls 2: box_corners draw_face
208	func draw_tree(base: i64, camx: i64, camy: i64, camz: i64, gx: i64, gz: i64) -> i64 called by 1: render_at calls 2: terrain_h draw_box
214	func render_at(base: i64, camx: i64, camy: i64, camz: i64, cgx: i64, cgz: i64) -> i64 called by 2: render main calls 3: draw_col has_tree draw_tree
236	func build_R(base: i64, ycos: i64, ysin: i64, pcos: i64, psin: i64) -> i64 called by 2: render main calls 5: m4_roty fratio m4_rotx f32_neg m4_mul
245	func mem_bytes() -> i64 { return O_DELTA + WN * WN * 8 + 64 } called by 1: main
247	func render(camx256: i64, camy256: i64, camz256: i64, ycos: i64, ysin: i64, pcos: i64, psin: i64) -> i64 calls 4: build_R f32_div f32_of render_at
255	func terrain_at(gx: i64, gz: i64) -> i64 { return terrain_h(0, gx, gz) } calls 1: terrain_h
257	func edit_delta(base: i64, gx: i64, gz: i64, change: i64) -> i64 called by 3: break_block place_block main
266	func break_block(gx: i64, gz: i64) -> i64 { return edit_delta(0, gx, gz, 0 - 1) } calls 1: edit_delta
267	func place_block(gx: i64, gz: i64) -> i64 { return edit_delta(0, gx, gz, 1) } calls 1: edit_delta
269	func pick(camx256: i64, camy256: i64, camz256: i64, dx1000: i64, dy1000: i64, dz1000: i64) -> i64 calls 1: terrain_h
287	func fb_off() -> i64 { return O_FB } called by 1: main
288	func ww() -> i64 { return W } called by 1: main
289	func hh() -> i64 { return H } called by 1: main
290	func main() -> i64 { return 0 }