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Diffstat (limited to 'stow/vim/.vim/plugin/SWTC.vim')
| -rw-r--r-- | stow/vim/.vim/plugin/SWTC.vim | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/stow/vim/.vim/plugin/SWTC.vim b/stow/vim/.vim/plugin/SWTC.vim new file mode 100644 index 0000000..9459e92 --- /dev/null +++ b/stow/vim/.vim/plugin/SWTC.vim @@ -0,0 +1,339 @@ +" Vim global plugin for Star Wars crawls +" Maintainer: Damian Conway +" License: This file is placed in the public domain. + +"###################################################################### +"## ## +"## To use: ## +"## ## +"## :SWTC <filename> ## +"## ## +"## See file 'intro.swtc' for the crawl-specification syntax ## +"## ## +"###################################################################### + + +" If already loaded, we're done... +if exists("loaded_SWcrawl") + finish +endif +let loaded_SWcrawl = 1 + +" Preserve external compatibility options, then enable full vim compatibility... +let s:save_cpo = &cpo +set cpo&vim + +" Set up the actual colon command... +command! -nargs=1 -complete=file SWTC call SWcrawl(<f-args>) + + +" Implementation.... + +let s:CRAWL_SPEED = 1 "(lines per second) +let s:STAR_DENSITY = 50 "(pixels per star, i.e. 1 star per STAR_DENSITY pixels) +let s:STARFIELD_HEIGHT = 2 "(screens deep) + +let s:LOGO_LINE1 = '^\s*\[\zs.*\ze\]\s*$' +let s:LOGO_LINE2 = '^\s*\[\[\zs.*\ze\]\]\s*$' +let s:LOGO_LINE3 = '^\s*\[\[\[\zs.*\ze\]\]\]\s*$' +let s:LOGO_LINE4 = '^\s*\[\[\[\[\zs.*\ze\]\]\]\]\s*$' +let s:CENTRED_CRAWL_LINE = '^\s*[>]\s*\zs.\{-}\ze\s*[<]\s*$' +let s:CRAWL_LINE = '^\s*[|]\s*\zs.\{-}\ze\s*[|]\s*$' +let s:PREFACE_LINE = '^\s*\zs.\{-}\ze\s*$' + +highlight SWC_PREFACE ctermfg=cyan +highlight SWC_FADE_LIGHT ctermfg=cyan +highlight SWC_FADE_DARK ctermfg=blue +highlight SWC_LOGO ctermfg=yellow cterm=bold +highlight SWC_CRAWL ctermfg=yellow +highlight SWC_STAR ctermfg=white +highlight SWC_BLACK ctermfg=black ctermbg=black + +let s:PREFACE_POS = { 'x': 10, 'y': 5 } + +function! SWcrawl (textsource) + " Load preface, logo, and text to be crawled... + let preface = [] + let logo1 = [] + let logo2 = [] + let logo3 = [] + let logo4 = [] + let crawl = [] + let centred = [] + let max_crawl_width = 0 + for nextline in readfile(a:textsource) + " Ignore blank lines... + if nextline =~ '^\s*$' + continue + + " Lines in [...] are logo components... + elseif nextline =~ s:LOGO_LINE4 + let logo4 += [ matchstr(nextline, s:LOGO_LINE4) ] + elseif nextline =~ s:LOGO_LINE3 + let logo3 += [ matchstr(nextline, s:LOGO_LINE3) ] + elseif nextline =~ s:LOGO_LINE2 + let logo2 += [ matchstr(nextline, s:LOGO_LINE2) ] + elseif nextline =~ s:LOGO_LINE1 + let logo1 += [ matchstr(nextline, s:LOGO_LINE1) ] + + " Lines in |...| are crawl components... + elseif nextline =~ s:CRAWL_LINE + let next_crawl = matchstr(nextline, s:CRAWL_LINE) + if strlen(next_crawl) > max_crawl_width + let max_crawl_width = strlen(substitute(next_crawl,'\s\+',' ','g')) + endif + let crawl += [ next_crawl ] + let centred += [ 0 ] + + " Lines in >...< are centred crawl components... + elseif nextline =~ s:CENTRED_CRAWL_LINE + let next_crawl = matchstr(nextline, s:CENTRED_CRAWL_LINE) + if strlen(next_crawl) > max_crawl_width + let max_crawl_width = strlen(substitute(next_crawl,'\s\+',' ','g')) + endif + let crawl += [ next_crawl ] + let centred += [ 1 ] + + " Anything else is preface... + else + let preface += [ substitute(matchstr(nextline, s:PREFACE_LINE), "^\s*", repeat(" ",s:PREFACE_POS.x), '') ] + + endif + endfor + + " Ensure all logos available... + let logo1 = len(logo1) ? logo1 : ["YOUR", "LOGO", "HERE"] + let logo2 = len(logo2) ? logo2 : copy(logo1) + let logo3 = len(logo3) ? logo3 : copy(logo2) + let logo4 = len(logo4) ? logo4 : copy(logo3) + + " Save current buffer for final transition effect... + let original_buffer = getline(1,'$') + + " Switch to a new buffer... + let prev_matches = getmatches() + enew! + let b:WIN = { 'x' : winwidth(0), 'y' : winheight(0) } + call setline(1, repeat([""], b:WIN.y + 1)) + + " And hide annoyances... + set lcs= + let old_rulerformat = &rulerformat + let &rulerformat="%#SWC_BLACK#%l" + echo "" + + " Generate starfield... + let stars = SWC_gen_stars() + + " Clear screen... + call setline(1, repeat([""], s:STARFIELD_HEIGHT * b:WIN.y) + original_buffer) + redraw + sleep 2 + + " Start with preface... + call matchadd('SWC_PREFACE', '.', 100) + call setline(s:PREFACE_POS.y, preface) + echo "" + redraw + sleep 5 + + " Clean up... + call clearmatches() + call setline(s:PREFACE_POS.y, repeat([""], len(preface))) + echo "" + redraw + sleep 1 + + " Then show logo receding at centre of screen... + call clearmatches() + call matchadd('SWC_BLACK', '*', 102) + call matchadd('SWC_STAR', '\s\zs[.]\ze\s', 101) + call matchadd('SWC_LOGO', '.', 100) + call SWC_draw_logo(logo1) + call SWC_paint_stars(stars) + echo "" + redraw + sleep 3 + + " Push it away... + call setline(1, repeat([""], b:WIN.y)) + call SWC_draw_logo(logo2) + call SWC_paint_stars(stars) + echo "" + redraw + sleep 500m + + call setline(1, repeat([""], b:WIN.y)) + call SWC_draw_logo(logo3) + call SWC_paint_stars(stars) + echo "" + redraw + sleep 500m + + call setline(1, repeat([""], b:WIN.y)) + call SWC_draw_logo(logo4) + call SWC_paint_stars(stars) + echo "" + redraw + sleep 500m + + + " Clean up... + call clearmatches() + call matchadd('SWC_STAR', '\s\zs[.]\ze\s', 101) + call setline(1, repeat([""], b:WIN.y)) + call SWC_paint_stars(stars) + echo "" + redraw + sleep 2 + + " Run crawl... + call clearmatches() + call matchadd('SWC_CRAWL', '.', 100) + call matchadd('SWC_STAR', '\s\zs[.]\ze\s', 101) + for offset_from_bottom in range(1, len(crawl) + b:WIN.y) + let crawl_line = offset_from_bottom < b:WIN.y ? 0 : offset_from_bottom - b:WIN.y + 1 + for screen_line in range(1, b:WIN.y) + if screen_line >= b:WIN.y - offset_from_bottom && crawl_line < len(crawl) + let padded_line = SWC_pad(crawl[crawl_line], screen_line, centred[crawl_line], max_crawl_width) + call setline(screen_line, padded_line) + let crawl_line += 1 + else + call setline(screen_line, "") + endif + endfor + call SWC_paint_stars(stars) + echo "" + redraw + exec 'sleep ' . s:trunc(1000/s:CRAWL_SPEED) . 'm' + if getchar(0) || offset_from_bottom > len(crawl) && padded_line !~ '\S' + break + endif + endfor + + " Pan starfield down... + call matchadd('SWC_FADE_DARK', '[^.]', 200) + sleep 200m + for offset_from_top in range(1, s:STARFIELD_HEIGHT * b:WIN.y) + 1delete + redraw + exec 'sleep ' . (200 - 2 * offset_from_top) . 'm' + endfor + sleep 200m + + + " Switch back to previous buffer and restore normal highlighting... + edit! # + call setmatches(prev_matches) + let &rulerformat = old_rulerformat + redraw + +endfunction + +function s:trunc (n) + return str2nr(string( a:n )) +endfunction + +function! SWC_draw_logo (logo) + let logo = copy(a:logo) + + " Find centre for logo... + let logo_width = 0 + for line in logo + if strlen(line) > logo_width + let logo_width = strlen(line) + endif + endfor + let logo_pos_x = (b:WIN.x - logo_width) / 2 + let logo_pos_y = (b:WIN.y - len(logo)) / 2 + + " Move logo to centre... + call map(logo, "repeat(' ', logo_pos_x) . v:val") + + " Draw logo + call setline(logo_pos_y, logo) + +endfunction + +function! SWC_pad (text, y_pos, centred, max_text_width) + + " Does this need padding??? + let words = split(a:text, '\s\+') + if len(words) < 1 + return a:text + endif + + " How many unpadded characters are there??? + let unpadded_width = 0 + for word in words + let unpadded_width += strlen(word) + endfor + + " How much padding is needed??? + let rel_y = (2.0 * a:y_pos / b:WIN.y) - 1.0 + let stretched_width = s:trunc( a:max_text_width + rel_y * (b:WIN.x - a:max_text_width) ) + let required_padding = max([ 0, stretched_width - unpadded_width ]) + let indent = (b:WIN.x - stretched_width) / 2 + let gap_count = len(words) - 1 + + " Is this a last line??? + let tight = a:centred || strlen(a:text) < 0.9 * a:max_text_width + + " Insert padding... + if a:y_pos >= b:WIN.y/2 + let min_padding_needed_for = gap_count + if tight + let min_pad_per_gap = max([ 1, s:trunc(rel_y * 6.0) ]) + else + let min_pad_per_gap = max([ 1, required_padding / gap_count ]) + let leftover_padding = required_padding - gap_count * min_pad_per_gap + let min_padding_needed_for = min([ gap_count, gap_count - leftover_padding ]) + endif + let padded_text = join(words[0 : min_padding_needed_for], repeat(" ", min_pad_per_gap)) + \ . repeat(" ", min_pad_per_gap+1) + \ . join(words[min_padding_needed_for+1 : -1], repeat(" ", min_pad_per_gap+1)) + let padded_text = substitute(padded_text, '\s*$', '', '') + + " Or remove chars (in the distance)... + elseif a:text =~ '\S' +" let delta = s:trunc( 8.0 * (b:WIN.y/2 - a:y_pos) ) +" let greeked_len = max([ 0, strlen(substitute(a:text, '^\s*\|\s*$', '', 'g')) - delta ]) + let greeked_len = tight ? stretched_width * (unpadded_width + gap_count) / a:max_text_width : stretched_width + let padded_text = repeat('~', greeked_len) + + " Or ignore it... + else + let padded_text = "" + + endif + + " Indent to centre... + let padded_text = substitute(padded_text, '\s*$', '', '') + let max_ever_padding = b:WIN.x - a:max_text_width + let indent = a:centred ? (b:WIN.x - strlen(padded_text))/2 + \ : indent + return repeat(" ", indent) . padded_text +endfunction + +function! SWC_gen_stars () + let star_count = b:WIN.x * s:STARFIELD_HEIGHT * b:WIN.y / s:STAR_DENSITY + let stars = [] + for n in range(star_count) + let x = RandomNumber(b:WIN.x) + 1 + let y = RandomNumber(s:STARFIELD_HEIGHT * b:WIN.y) + 1 + let stars += [{'y':y,'x':x}] + endfor + return stars +endfunction + +function! SWC_paint_stars (stars) + let max_x = b:WIN.x + for star in a:stars + let line = strpart(getline(star.y) . repeat(" ", max_x), 0, max_x) + let line = substitute(line, '\s\zs\%'.(star.x-1).'c\s\ze\s', '.', '') + call setline(star.y, line) + endfor +endfunction + +" Restore previous external compatibility options +let &cpo = s:save_cpo |