I forgot to add the examples dir somehow. they're back. tictactoe works again too.

1 files changed, 184 insertions, 0 deletions

diff --git a/share/hackvr/examples/hackvr_term/hackvr_term.c b/share/hackvr/examples/hackvr_term/hackvr_term.c
new file mode 100644
index 0000000..71f2492
--- /dev/null
+++ b/share/hackvr/examples/hackvr_term/hackvr_term.c
@@ -0,0 +1,184 @@
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h> //PATH_MAX
+#include "libtmt/tmt.h"
+
+//these numbers include the space between characters
+//apple401 font is this wide:
+//#define FONTW 14
+//#define FONTH 16
+
+//epoch font is this wide:
+#define FONTW 6
+#define FONTH 10
+
+//////////////////////////////////// hey. you can do some config here. either preload glyphs or re-read font file each time.
+//comment out the next line if you want what is probably the slow version. might be safer and use less memory though.
+//maybe just put the font file in ram. linux caches that crap anyway, right?
+//testing showed preloading was at least 10x faster.
+#define PRELOAD_GLYPHS
+//only 8-bit characters atm.
+//and we'll need to malloc the amount of lines each character will have.
+//and malloc each line in that glyph...
+//or just set it statically.
+
+#ifdef PRELOAD_GLYPHS
+
+#define MAXCHARACTER 256
+#define MAXLINESPERGLYPH 16
+#define MAXCHARSPERGLYPHLINE 256
+char glyphs[MAXCHARACTER][MAXLINESPERGLYPH][MAXCHARSPERGLYPHLINE];
+
+char font_file[PATH_MAX];
+
+void preload_glyphs() {
+  char line[MAXCHARSPERGLYPHLINE];//tmp storage
+  FILE *fp;
+  int charN;
+  int i;
+  for(i=0;i<MAXCHARACTER;i++) {
+   glyphs[i][0][0]=0;//zero out the first byte of the first line of every glyph. we'll mark the end if we actually read something
+  }
+  if((fp=fopen(font_file,"r")) == NULL) {
+    fprintf(stderr,"hackvr_term: failed to open font file: %s\n",font_file);
+    exit(1);
+  }
+  for(i=0;fgets(line,sizeof(line)-1,fp) != 0;i++) {
+    if(charN != strtol(line,0,16)) {
+     i=0;
+     charN=strtol(line,0,16);
+    }
+    strcpy(glyphs[charN][i],line);
+    glyphs[charN][i+1][0]=0;//mark the end here. if we do it inside the conditional it won't mark the last one.
+  }
+  fclose(fp);
+}
+
+void hackvr_draw_character(int c,int r,const TMTCHAR *ch) {
+  char *line;
+  int i,ret=0;
+  printf("term_%02d_%02d addshape %d 4  -1 -3 0  5 -3 0  5 7 0  -1 7 0\n",c,r,ch->a.bg+15);
+  for(i=0,line=glyphs[ch->c][0];line[0];i++,line=glyphs[ch->c][i]) {
+    ret=1;
+    printf("term_%02d_%02d addshape %d %s",c,r,ch->a.fg == -1 ? 17 : ch->a.fg + 15,line+strlen("XX addshape X"));
+  }
+  if(ret) {//if we drew something we should place it somewhere.
+    printf("term_%02d_%02d move %d %d 0\n",c,r,c*FONTW,-r*FONTH);
+  }
+}
+
+#else
+
+void hackvr_draw_character(int c,int r,const TMTCHAR *ch) {//this is slow but allows you to change the font between each character... if you really wanted that.
+ int i;
+ FILE *fp;
+ char str[16];
+ char line[256];//whatever
+ if(ch->c < 128) {
+  snprintf(str,sizeof(str)-1,"%02lx",ch->c);
+ } else {
+  snprintf(str,sizeof(str)-1,"%08lx",ch->c);
+ }
+ if((fp=fopen(font_file,"r")) == NULL ) {
+  fprintf(stderr,"# fail to open font\n");
+  exit(1);
+ }
+ printf("term_%02d_%02d addshape %d 4  -1 -3 0  5 -3 0  5 7 0  -1 7 0\n",c,r,ch->a.bg+15);
+ for(i=0;fgets(line,sizeof(line)-1,fp) != 0;i++) {
+  if(!strncmp(str,line,2)) {
+   printf("term_%02d_%02d addshape %d %s",c,r,ch->a.fg==-1?2:ch->a.fg+15,line+strlen("XX addshape X "));
+  }
+ }
+ if(i) printf("term_%02d_%02d move %d %d 0\n",c,r,c*FONTW,-r*FONTH);
+ fclose(fp);
+}
+
+#endif
+
+void callback(tmt_msg_t m,TMT *vt, const void *a,void *vt_old) {
+ static int cr_old=0;
+ static int cc_old=0;
+ const TMTSCREEN *s_old=tmt_screen(vt_old);
+ const TMTSCREEN *s=tmt_screen(vt);
+ const TMTPOINT *c=tmt_cursor(vt);
+ const TMTCHAR *ch;
+ switch(m) {
+  case TMT_MSG_BELL:
+   printf("term set global.beep\n");
+   break;
+  case TMT_MSG_UPDATE:
+   for (size_t r = 0; r < s->nline; r++){
+    if (s->lines[r]->dirty){
+     for (size_t c = 0; c < s->ncol; c++){
+      if(memcmp(&(s->lines[r]->chars[c]),&(s_old->lines[r]->chars[c]),sizeof(TMTCHAR))) {
+       ch=&(s->lines[r]->chars[c]);
+       printf("term_%02d_%02d deletegroup term_%02d_%02d\n",c,r,c,r);
+       hackvr_draw_character(c,r,ch);
+       memcpy(&(s_old->lines[r]->chars[c]),&(s->lines[r]->chars[c]),sizeof(TMTCHAR));
+      }
+     }
+    }
+   }
+   break;
+  case TMT_MSG_ANSWER://what does this do?
+   fprintf(stderr,"ANSWER: %s\n",(const char *)a);
+   break;
+  case TMT_MSG_MOVED:
+   printf("cursor move %d %d 0\n", (c->c - cc_old) * 5, - (c->r - cr_old) * 9);//calculate relative movement needed based on previous and current positions.
+   cr_old=c->r;
+   cc_old=c->c;
+   break;
+  case TMT_MSG_CURSOR:
+   if(!strcmp(a,"t")) {
+    printf("cursor deletegroup cursor\n");//just delete it and redraw the cursor.
+    printf("cursor addshape 2 4  0 -2 0  4 -2 0  4 6 0  0 6 0\n");//let's pretend this is how cursors should be.
+    printf("cursor move %d %d 0\n",c->c * 5,-c->r * 9);
+   }
+   if(!strcmp(a,"f")) {
+    printf("cursor deletegroup cursor\n");
+    cr_old=0;
+    cc_old=0;
+   }
+   break;
+  default:
+   fprintf(stderr,"unhandled message type: %d\n",m);
+ }
+ return;
+}
+
+int main(int argc,char *argv[]) {
+ char in[16];
+ if(argc < 3) return fprintf(stderr,"usage: ./hackvr_term rows cols\n"),1;
+ int r=atoi(argv[2]);
+ int ret=0;
+ int c=atoi(argv[1]);
+ if(!getenv("PREFIX")) {
+  fprintf(stderr,"hackvr_term: PREFIX is not set. I dunno where to find my fonts.\n");
+  return 1;
+ }
+ snprintf(font_file,sizeof(font_file)-1,"%s/share/hackvr/font/default.hackvr",getenv("PREFIX"));
+#ifdef PRELOAD_GLYPHS
+ printf("# hackvr_term: preloading glyphs\n");
+ preload_glyphs();//will exit on error
+ printf("# hackvr_term: done.\n");
+#endif
+ setbuf(stdin,0);
+ setbuf(stdout,0);
+ TMT *vt_old = tmt_open(r,c,NULL,NULL,NULL);
+ if(!vt_old) return fprintf(stderr,"failed to open tmt's virtual terminal for storage"),1;
+ TMT *vt = tmt_open(r,c,callback,vt_old,NULL);
+ if(!vt) return fprintf(stderr,"failed to open tmt's virtual terminal"),1;
+ //read from stdin and write to terminal.
+ while((ret=read(0,in,16)) != 0) {//16 bytes at a time work?
+  if(ret == -1) {
+   if(errno == EAGAIN) continue;
+   break;
+  }
+  tmt_write(vt,in,ret);
+ }
+ tmt_close(vt);
+ return 0;
+}