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This commit is contained in:
Brad Svercl 2022-01-15 23:19:33 -06:00
parent add37add17
commit 7710413d80

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@ -60,7 +60,9 @@ pub fn initRNG() !void {
// print // print
pub fn emit(s: []const u8) void { pub fn emit(s: []const u8) void {
const sz = stdout.write(s) catch unreachable; const sz = stdout.write(s) catch unreachable;
if (sz==0) {return;} // cauze I c if (sz == 0) {
return;
} // cauze I c
return; return;
} }
@ -142,14 +144,14 @@ pub fn initColor() void {
//get terminal size given a tty //get terminal size given a tty
pub fn getTermSz(tty: std.os.fd_t) !TermSz { pub fn getTermSz(tty: std.os.fd_t) !TermSz {
var winsz = std.os.system.winsize { var winsz = std.os.system.winsize{ .ws_col = 0, .ws_row = 0, .ws_xpixel = 0, .ws_ypixel = 0 };
.ws_col=0, .ws_row=0,
.ws_xpixel=0, .ws_ypixel=0
};
const rv = std.os.system.ioctl(tty, TIOCGWINSZ, @ptrToInt(&winsz)); const rv = std.os.system.ioctl(tty, TIOCGWINSZ, @ptrToInt(&winsz));
const err = std.os.errno(rv); const err = std.os.errno(rv);
if (rv==0) { return TermSz{ .height = winsz.ws_row, .width = winsz.ws_col }; } if (rv == 0) {
else {return std.os.unexpectedErrno(err);} return TermSz{ .height = winsz.ws_row, .width = winsz.ws_col };
} else {
return std.os.unexpectedErrno(err);
}
} }
pub fn initTermSize() !void { pub fn initTermSize() !void {
@ -189,7 +191,6 @@ pub fn pause() void {
} }
} }
/// Part I - Terminal Size Check /// Part I - Terminal Size Check
/// showTermCap() needs about 120x22; if screen is too small, give user a chance to abort and try again. /// showTermCap() needs about 120x22; if screen is too small, give user a chance to abort and try again.
/// ///
@ -204,22 +205,32 @@ pub fn checkTermSz() void {
var h_ok = true; var h_ok = true;
// chk cur < min // chk cur < min
if (term_sz.width<min_w) { w_ok=false; } if (term_sz.width < min_w) {
if (term_sz.height<min_h) { h_ok=false; } w_ok = false;
}
if (term_sz.height < min_h) {
h_ok = false;
}
if (w_ok and h_ok) { return; } if (w_ok and h_ok) {
else { return;
} else {
//screen is too small //screen is too small
//red text //red text
emit(fg[9]); emit(fg[9]);
//check conditions //check conditions
if (w_ok and !h_ok) { emit_fmt("Screen may be too short - height is {d} and need {d}.",.{term_sz.height, min_h}); } if (w_ok and !h_ok) {
else if (!w_ok and h_ok) { emit_fmt("Screen may be too narrow - width is {d} and need {d}.",.{term_sz.width, min_w}); } emit_fmt("Screen may be too short - height is {d} and need {d}.", .{ term_sz.height, min_h });
else { emit_fmt("Screen is too small - have {d} x {d} and need {d} x {d}",.{term_sz.width, term_sz.height, min_w, min_h}); } } else if (!w_ok and h_ok) {
emit_fmt("Screen may be too narrow - width is {d} and need {d}.", .{ term_sz.width, min_w });
} else {
emit_fmt("Screen is too small - have {d} x {d} and need {d} x {d}", .{ term_sz.width, term_sz.height, min_w, min_h });
}
emit(nl);emit(nl); emit(nl);
emit(nl);
//warn user w/white on red //warn user w/white on red
emit(bg[1]); emit(bg[1]);
@ -239,12 +250,12 @@ pub fn checkTermSz() void {
} }
} }
/// Part II - Show terminal capabilities /// Part II - Show terminal capabilities
/// ///
/// Since user terminals vary in capabilities, handy to have a screen that renders ACTUAL colors /// Since user terminals vary in capabilities, handy to have a screen that renders ACTUAL colors
/// and exercises various terminal commands prior to DOOM fire. /// and exercises various terminal commands prior to DOOM fire.
/// ///
pub fn showTermSz() void { pub fn showTermSz() void {
//todo - show os, os ver, zig ver //todo - show os, os ver, zig ver
emit_fmt("Screen size: {d}w x {d}h\n\n", .{ term_sz.width, term_sz.height }); emit_fmt("Screen size: {d}w x {d}h\n\n", .{ term_sz.width, term_sz.height });
@ -263,7 +274,9 @@ pub fn showStdColors() void {
while (color_idx < 8) { while (color_idx < 8) {
defer color_idx += 1; defer color_idx += 1;
emit(bg[color_idx]); emit(bg[color_idx]);
if (color_idx==7) { emit(fg[0]); } if (color_idx == 7) {
emit(fg[0]);
}
emit_fmt("{u} {d:2} ", .{ sep, color_idx }); emit_fmt("{u} {d:2} ", .{ sep, color_idx });
} }
emit(nl); emit(nl);
@ -273,9 +286,10 @@ pub fn showStdColors() void {
while (color_idx < 16) { while (color_idx < 16) {
defer color_idx += 1; defer color_idx += 1;
emit(bg[color_idx]); emit(bg[color_idx]);
if (color_idx==15) { emit(fg[0]); } if (color_idx == 15) {
emit(fg[0]);
}
emit_fmt("{u} {d:2} ", .{ sep, color_idx }); emit_fmt("{u} {d:2} ", .{ sep, color_idx });
} }
emit(nl); emit(nl);
@ -307,8 +321,7 @@ pub fn show216Colors() void {
// invert color id for readability // invert color id for readability
if (color_idx > 17) { if (color_idx > 17) {
fg_idx = 0; fg_idx = 0;
} } else {
else {
fg_idx = 15; fg_idx = 15;
} }
@ -359,15 +372,7 @@ pub fn scrollMarquee() void {
emit(marquee_bg); emit(marquee_bg);
//quotes - will confirm animations are working on current terminal //quotes - will confirm animations are working on current terminal
const txt =[_][]const u8{ const txt = [_][]const u8{ " Things move along so rapidly nowadays that people saying " ++ color_italic ++ "It can't be done" ++ color_not_italic ++ " are always being interrupted", " by somebody doing it. " ++ color_italic ++ "-- Puck, 1902" ++ color_not_italic, " Test your might!", " " ++ color_italic ++ "-- Mortal Kombat" ++ color_not_italic, " How much is the fish?", " " ++ color_italic ++ "-- Scooter" ++ color_not_italic };
" Things move along so rapidly nowadays that people saying "++color_italic++"It can't be done"++color_not_italic++" are always being interrupted",
" by somebody doing it. "++color_italic++"-- Puck, 1902"++color_not_italic,
" Test your might!",
" "++color_italic++"-- Mortal Kombat"++color_not_italic,
" How much is the fish?",
" "++color_italic++"-- Scooter"++color_not_italic};
const txt_len: u8 = txt.len / 2; // print two rows at a time const txt_len: u8 = txt.len / 2; // print two rows at a time
//fade txt in and out //fade txt in and out
@ -405,7 +410,6 @@ pub fn scrollMarquee() void {
//let quote chill for a second //let quote chill for a second
std.time.sleep(1000 * std.time.ns_per_ms); std.time.sleep(1000 * std.time.ns_per_ms);
//fade out //fade out
fade_idx = fade_len - 1; fade_idx = fade_len - 1;
while (fade_idx > 0) { while (fade_idx > 0) {
@ -461,7 +465,6 @@ var t_now:i64=0;
var t_dur: f64 = 0.0; var t_dur: f64 = 0.0;
var fps: f64 = 0.0; var fps: f64 = 0.0;
pub fn initBuf() void { pub fn initBuf() void {
//some lazy guesswork to make sure we have enough of a buffer to render DOOM fire. //some lazy guesswork to make sure we have enough of a buffer to render DOOM fire.
const px_char_sz = px.len; const px_char_sz = px.len;
@ -501,10 +504,13 @@ pub fn paintBuf() void {
bs_sz_min = bs_len; bs_sz_min = bs_len;
bs_sz_max = bs_len; bs_sz_max = bs_len;
bs_sz_avg = bs_len; bs_sz_avg = bs_len;
} else {
if (bs_len < bs_sz_min) {
bs_sz_min = bs_len;
}
if (bs_len > bs_sz_max) {
bs_sz_max = bs_len;
} }
else {
if( bs_len < bs_sz_min) { bs_sz_min=bs_len; }
if( bs_len > bs_sz_max) { bs_sz_max=bs_len; }
bs_sz_avg = bs_sz_avg * (bs_frame_tic - 1) / bs_frame_tic + bs_len / bs_frame_tic; bs_sz_avg = bs_sz_avg * (bs_frame_tic - 1) / bs_frame_tic + bs_len / bs_frame_tic;
} }
@ -516,8 +522,9 @@ pub fn paintBuf() void {
} }
// initBuf(); defer freeBuf(); // initBuf(); defer freeBuf();
pub fn freeBuf() void { allocator.free(bs); } pub fn freeBuf() void {
allocator.free(bs);
}
pub fn showDoomFire() void { pub fn showDoomFire() void {
//term size => fire size //term size => fire size
@ -605,8 +612,7 @@ pub fn showDoomFire() void {
//bounds checking //bounds checking
if ((spread_px == 0) and (doFire_idx >= FIRE_W)) { if ((spread_px == 0) and (doFire_idx >= FIRE_W)) {
screen_buf[doFire_idx - FIRE_W] = 0; screen_buf[doFire_idx - FIRE_W] = 0;
} } else {
else {
spread_rnd_idx = rand.intRangeAtMost(u8, 0, 3); spread_rnd_idx = rand.intRangeAtMost(u8, 0, 3);
if (doFire_idx >= (spread_rnd_idx + 1)) { if (doFire_idx >= (spread_rnd_idx + 1)) {
spread_dst = doFire_idx - spread_rnd_idx + 1; spread_dst = doFire_idx - spread_rnd_idx + 1;
@ -669,5 +675,4 @@ pub fn main() anyerror!void {
checkTermSz(); checkTermSz();
showTermCap(); showTermCap();
showDoomFire(); showDoomFire();
} }