From 7256502afa0babe60fcafbd2888cd3e33c3f9b6b Mon Sep 17 00:00:00 2001 From: xolatile Date: Wed, 16 Jul 2025 23:07:43 +0200 Subject: Source code, broken... --- src/engine/rendertext.cpp | 392 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 392 insertions(+) create mode 100644 src/engine/rendertext.cpp (limited to 'src/engine/rendertext.cpp') diff --git a/src/engine/rendertext.cpp b/src/engine/rendertext.cpp new file mode 100644 index 0000000..44ad136 --- /dev/null +++ b/src/engine/rendertext.cpp @@ -0,0 +1,392 @@ +#include "engine.h" + +static hashnameset fonts; +static font *fontdef = NULL; +static int fontdeftex = 0; + +font *curfont = NULL; +int curfonttex = 0; + +void newfont(char *name, char *tex, int *defaultw, int *defaulth) +{ + font *f = &fonts[name]; + if(!f->name) f->name = newstring(name); + f->texs.shrink(0); + f->texs.add(textureload(tex)); + f->chars.shrink(0); + f->charoffset = '!'; + f->defaultw = *defaultw; + f->defaulth = *defaulth; + f->scale = f->defaulth; + + fontdef = f; + fontdeftex = 0; +} + +void fontoffset(char *c) +{ + if(!fontdef) return; + + fontdef->charoffset = c[0]; +} + +void fontscale(int *scale) +{ + if(!fontdef) return; + + fontdef->scale = *scale > 0 ? *scale : fontdef->defaulth; +} + +void fonttex(char *s) +{ + if(!fontdef) return; + + Texture *t = textureload(s); + loopv(fontdef->texs) if(fontdef->texs[i] == t) { fontdeftex = i; return; } + fontdeftex = fontdef->texs.length(); + fontdef->texs.add(t); +} + +void fontchar(int *x, int *y, int *w, int *h, int *offsetx, int *offsety, int *advance) +{ + if(!fontdef) return; + + font::charinfo &c = fontdef->chars.add(); + c.x = *x; + c.y = *y; + c.w = *w ? *w : fontdef->defaultw; + c.h = *h ? *h : fontdef->defaulth; + c.offsetx = *offsetx; + c.offsety = *offsety; + c.advance = *advance ? *advance : c.offsetx + c.w; + c.tex = fontdeftex; +} + +void fontskip(int *n) +{ + if(!fontdef) return; + loopi(max(*n, 1)) + { + font::charinfo &c = fontdef->chars.add(); + c.x = c.y = c.w = c.h = c.offsetx = c.offsety = c.advance = c.tex = 0; + } +} + +COMMANDN(font, newfont, "ssii"); +COMMAND(fontoffset, "s"); +COMMAND(fontscale, "i"); +COMMAND(fonttex, "s"); +COMMAND(fontchar, "iiiiiii"); +COMMAND(fontskip, "i"); + +void fontalias(const char *dst, const char *src) +{ + font *s = fonts.access(src); + if(!s) return; + font *d = &fonts[dst]; + if(!d->name) d->name = newstring(dst); + d->texs = s->texs; + d->chars = s->chars; + d->charoffset = s->charoffset; + d->defaultw = s->defaultw; + d->defaulth = s->defaulth; + d->scale = s->scale; + + fontdef = d; + fontdeftex = d->texs.length()-1; +} + +COMMAND(fontalias, "ss"); + +bool setfont(const char *name) +{ + font *f = fonts.access(name); + if(!f) return false; + curfont = f; + return true; +} + +static vector fontstack; + +void pushfont() +{ + fontstack.add(curfont); +} + +bool popfont() +{ + if(fontstack.empty()) return false; + curfont = fontstack.pop(); + return true; +} + +void gettextres(int &w, int &h) +{ + if(w < MINRESW || h < MINRESH) + { + if(MINRESW > w*MINRESH/h) + { + h = h*MINRESW/w; + w = MINRESW; + } + else + { + w = w*MINRESH/h; + h = MINRESH; + } + } +} + +float text_widthf(const char *str) +{ + float width, height; + text_boundsf(str, width, height); + return width; +} + +#define FONTTAB (4*FONTW) +#define TEXTTAB(x) ((int((x)/FONTTAB)+1.0f)*FONTTAB) + +void tabify(const char *str, int *numtabs) +{ + int tw = max(*numtabs, 0)*FONTTAB-1, tabs = 0; + for(float w = text_widthf(str); w <= tw; w = TEXTTAB(w)) ++tabs; + int len = strlen(str); + char *tstr = newstring(len + tabs); + memcpy(tstr, str, len); + memset(&tstr[len], '\t', tabs); + tstr[len+tabs] = '\0'; + stringret(tstr); +} + +COMMAND(tabify, "si"); + +void draw_textf(const char *fstr, int left, int top, ...) +{ + defvformatstring(str, top, fstr); + draw_text(str, left, top); +} + +const matrix4x3 *textmatrix = NULL; + +static float draw_char(Texture *&tex, int c, float x, float y, float scale) +{ + font::charinfo &info = curfont->chars[c-curfont->charoffset]; + if(tex != curfont->texs[info.tex]) + { + xtraverts += gle::end(); + tex = curfont->texs[info.tex]; + glBindTexture(GL_TEXTURE_2D, tex->id); + } + + float x1 = x + scale*info.offsetx, + y1 = y + scale*info.offsety, + x2 = x + scale*(info.offsetx + info.w), + y2 = y + scale*(info.offsety + info.h), + tx1 = info.x / float(tex->xs), + ty1 = info.y / float(tex->ys), + tx2 = (info.x + info.w) / float(tex->xs), + ty2 = (info.y + info.h) / float(tex->ys); + + if(textmatrix) + { + gle::attrib(textmatrix->transform(vec2(x1, y1))); gle::attribf(tx1, ty1); + gle::attrib(textmatrix->transform(vec2(x2, y1))); gle::attribf(tx2, ty1); + gle::attrib(textmatrix->transform(vec2(x2, y2))); gle::attribf(tx2, ty2); + gle::attrib(textmatrix->transform(vec2(x1, y2))); gle::attribf(tx1, ty2); + } + else + { + gle::attribf(x1, y1); gle::attribf(tx1, ty1); + gle::attribf(x2, y1); gle::attribf(tx2, ty1); + gle::attribf(x2, y2); gle::attribf(tx2, ty2); + gle::attribf(x1, y2); gle::attribf(tx1, ty2); + } + + return scale*info.advance; +} + +//stack[sp] is current color index +static void text_color(char c, char *stack, int size, int &sp, bvec color, int a) +{ + if(c=='s') // save color + { + c = stack[sp]; + if(sp 0) --sp; c = stack[sp]; } // restore color + else stack[sp] = c; + switch(c) + { + case '0': color = bvec( 64, 255, 128); break; // green: player talk + case '1': color = bvec( 96, 160, 255); break; // blue: "echo" command + case '2': color = bvec(255, 192, 64); break; // yellow: gameplay messages + case '3': color = bvec(255, 64, 64); break; // red: important errors + case '4': color = bvec(128, 128, 128); break; // gray + case '5': color = bvec(192, 64, 192); break; // magenta + case '6': color = bvec(255, 128, 0); break; // orange + case '7': color = bvec(255, 255, 255); break; // white + case '8': color = bvec( 96, 240, 255); break; // cyan + // provided color: everything else + } + gle::color(color, a); + } +} + +#define TEXTSKELETON \ + float y = 0, x = 0, scale = curfont->scale/float(curfont->defaulth);\ + int i;\ + for(i = 0; str[i]; i++)\ + {\ + TEXTINDEX(i)\ + int c = uchar(str[i]);\ + if(c=='\t') { x = TEXTTAB(x); TEXTWHITE(i) }\ + else if(c==' ') { x += scale*curfont->defaultw; TEXTWHITE(i) }\ + else if(c=='\n') { TEXTLINE(i) x = 0; y += FONTH; }\ + else if(c=='\f') { if(str[i+1]) { i++; TEXTCOLOR(i) }}\ + else if(curfont->chars.inrange(c-curfont->charoffset))\ + {\ + float cw = scale*curfont->chars[c-curfont->charoffset].advance;\ + if(cw <= 0) continue;\ + if(maxwidth != -1)\ + {\ + int j = i;\ + float w = cw;\ + for(; str[i+1]; i++)\ + {\ + int c = uchar(str[i+1]);\ + if(c=='\f') { if(str[i+2]) i++; continue; }\ + if(i-j > 16) break;\ + if(!curfont->chars.inrange(c-curfont->charoffset)) break;\ + float cw = scale*curfont->chars[c-curfont->charoffset].advance;\ + if(cw <= 0 || w + cw > maxwidth) break;\ + w += cw;\ + }\ + if(x + w > maxwidth && j!=0) { TEXTLINE(j-1) x = 0; y += FONTH; }\ + TEXTWORD\ + }\ + else\ + { TEXTCHAR(i) }\ + }\ + } + +//all the chars are guaranteed to be either drawable or color commands +#define TEXTWORDSKELETON \ + for(; j <= i; j++)\ + {\ + TEXTINDEX(j)\ + int c = uchar(str[j]);\ + if(c=='\f') { if(str[j+1]) { j++; TEXTCOLOR(j) }}\ + else { float cw = scale*curfont->chars[c-curfont->charoffset].advance; TEXTCHAR(j) }\ + } + +#define TEXTEND(cursor) if(cursor >= i) { do { TEXTINDEX(cursor); } while(0); } + +int text_visible(const char *str, float hitx, float hity, int maxwidth) +{ + #define TEXTINDEX(idx) + #define TEXTWHITE(idx) if(y+FONTH > hity && x >= hitx) return idx; + #define TEXTLINE(idx) if(y+FONTH > hity) return idx; + #define TEXTCOLOR(idx) + #define TEXTCHAR(idx) x += cw; TEXTWHITE(idx) + #define TEXTWORD TEXTWORDSKELETON + TEXTSKELETON + #undef TEXTINDEX + #undef TEXTWHITE + #undef TEXTLINE + #undef TEXTCOLOR + #undef TEXTCHAR + #undef TEXTWORD + return i; +} + +//inverse of text_visible +void text_posf(const char *str, int cursor, float &cx, float &cy, int maxwidth) +{ + #define TEXTINDEX(idx) if(idx == cursor) { cx = x; cy = y; break; } + #define TEXTWHITE(idx) + #define TEXTLINE(idx) + #define TEXTCOLOR(idx) + #define TEXTCHAR(idx) x += cw; + #define TEXTWORD TEXTWORDSKELETON if(i >= cursor) break; + cx = cy = 0; + TEXTSKELETON + TEXTEND(cursor) + #undef TEXTINDEX + #undef TEXTWHITE + #undef TEXTLINE + #undef TEXTCOLOR + #undef TEXTCHAR + #undef TEXTWORD +} + +void text_boundsf(const char *str, float &width, float &height, int maxwidth) +{ + #define TEXTINDEX(idx) + #define TEXTWHITE(idx) + #define TEXTLINE(idx) if(x > width) width = x; + #define TEXTCOLOR(idx) + #define TEXTCHAR(idx) x += cw; + #define TEXTWORD x += w; + width = 0; + TEXTSKELETON + height = y + FONTH; + TEXTLINE(_) + #undef TEXTINDEX + #undef TEXTWHITE + #undef TEXTLINE + #undef TEXTCOLOR + #undef TEXTCHAR + #undef TEXTWORD +} + +void draw_text(const char *str, int left, int top, int r, int g, int b, int a, int cursor, int maxwidth) +{ + #define TEXTINDEX(idx) if(idx == cursor) { cx = x; cy = y; } + #define TEXTWHITE(idx) + #define TEXTLINE(idx) + #define TEXTCOLOR(idx) if(usecolor) text_color(str[idx], colorstack, sizeof(colorstack), colorpos, color, a); + #define TEXTCHAR(idx) draw_char(tex, c, left+x, top+y, scale); x += cw; + #define TEXTWORD TEXTWORDSKELETON + char colorstack[10]; + colorstack[0] = 'c'; //indicate user color + bvec color(r, g, b); + int colorpos = 0; + float cx = -FONTW, cy = 0; + bool usecolor = true; + if(a < 0) { usecolor = false; a = -a; } + Texture *tex = curfont->texs[0]; + glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); + glBindTexture(GL_TEXTURE_2D, tex->id); + gle::color(color, a); + gle::defvertex(textmatrix ? 3 : 2); + gle::deftexcoord0(); + gle::begin(GL_QUADS); + TEXTSKELETON + TEXTEND(cursor) + xtraverts += gle::end(); + if(cursor >= 0 && (totalmillis/250)&1) + { + gle::color(color, a); + if(maxwidth != -1 && cx >= maxwidth) { cx = 0; cy += FONTH; } + draw_char(tex, '_', left+cx, top+cy, scale); + xtraverts += gle::end(); + } + #undef TEXTINDEX + #undef TEXTWHITE + #undef TEXTLINE + #undef TEXTCOLOR + #undef TEXTCHAR + #undef TEXTWORD +} + +void reloadfonts() +{ + enumerate(fonts, font, f, + loopv(f.texs) if(!reloadtexture(*f.texs[i])) fatal("failed to reload font texture"); + ); +} + -- cgit v1.2.3