Added `-binary` CLI flag to NEDsim for loading a.out format programs.

[screensavers] / hacks / NEDsim / NEDsim.c

diff --git a/hacks/NEDsim/NEDsim.c b/hacks/NEDsim/NEDsim.c
index bee5e3b..2d78973 100644 (file)
--- a/hacks/NEDsim/NEDsim.c
+++ b/hacks/NEDsim/NEDsim.c
@@ -4,11 +4,6 @@
 // TODO:
 //      - Write a brief description of the machine being simulated. Only one thread, reduced RAM, no meaningful console when running as screensaver, etc.
 
 // TODO:
 //      - Write a brief description of the machine being simulated. Only one thread, reduced RAM, no meaningful console when running as screensaver, etc.
 

-// CLI Flags:
-//      -path-to-aout-binary
-//      -path-to-font-file
-//      -speed
-

 // Ideas for sample programs to include:
 //      - Build list of integers on the stack (DUP, IM_1, ADD).
 //      - Calculate prime numbers, placing them on the stack.
 // Ideas for sample programs to include:
 //      - Build list of integers on the stack (DUP, IM_1, ADD).
 //      - Calculate prime numbers, placing them on the stack.


@@ -284,6 +279,59 @@ draw_panel(struct NEDsim * nedsim)
             nedsim->cell_size * OVERALL_WIDTH_IN_CELLS,
             nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS)
     );
             nedsim->cell_size * OVERALL_WIDTH_IN_CELLS,
             nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS)
     );

+
+    // Give the panel rounded corners by first deleting the four right-angle corners...
+    set_color(nedsim, &color_list[nedsim->color_index].panel_bg);
+    XFillRectangle(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset,
+            nedsim->origin_y_offset,
+            nedsim->cell_size,
+            nedsim->cell_size
+    );
+    XFillRectangle(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-1)),
+            nedsim->origin_y_offset,
+            nedsim->cell_size,
+            nedsim->cell_size
+    );
+    XFillRectangle(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset,
+            nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 1)),
+            nedsim->cell_size,
+            nedsim->cell_size
+    );
+    XFillRectangle(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-1)),
+            nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 1)),
+            nedsim->cell_size,
+            nedsim->cell_size
+    );
+    // ...and then replacing them with filled arcs, forming rounded corners.
+    set_color(nedsim, &color_list[nedsim->color_index].panel_fg);
+    XFillArc(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset,
+            nedsim->origin_y_offset,
+            nedsim->cell_size * 2, nedsim->cell_size * 2,
+            180*64, -90*64
+    );
+    XFillArc(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-2)),
+            nedsim->origin_y_offset,
+            nedsim->cell_size * 2, nedsim->cell_size * 2,
+            0, 90*64
+    );
+    XFillArc(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset,
+            nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 2)),
+            nedsim->cell_size * 2, nedsim->cell_size * 2,
+            180*64, 90*64
+    );
+    XFillArc(nedsim->dpy, nedsim->win, nedsim->gc,
+            nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-2)),
+            nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 2)),
+            nedsim->cell_size * 2, nedsim->cell_size * 2,
+            0, -90*64
+    );

 }
 
 // TODO: Explain
 }
 
 // TODO: Explain


@@ -624,8 +672,16 @@ NEDsim_event(Display * dpy, Window win, void * closure, XEvent * event)
 static void
 NEDsim_free(Display * dpy, Window win, void * closure)
 {
 static void
 NEDsim_free(Display * dpy, Window win, void * closure)
 {

-    // TODO: Replace all this with proper code to free everything.

     struct NEDsim * nedsim = closure;
     struct NEDsim * nedsim = closure;

+
+    if (nedsim->nedstate != NULL) {
+        free(nedsim->nedstate->active_thread->psw);
+        free(nedsim->nedstate->active_thread);
+        free(nedsim->nedstate->hack);
+        free(nedsim->nedstate);
+    }
+
+    // TODO: Replace all this with proper code to free everything related to the screensaver itself.

     XFreeGC(nedsim->dpy, nedsim->gc);
     free(nedsim);
 }
     XFreeGC(nedsim->dpy, nedsim->gc);
     free(nedsim);
 }


@@ -654,8 +710,15 @@ NEDsim_init(Display * dpy, Window win)
     nedsim->delay = get_integer_resource(nedsim->dpy, "delay", "Integer");
     nedsim->delay *= 1000; /* Turn milliseconds into microseconds. */
 
     nedsim->delay = get_integer_resource(nedsim->dpy, "delay", "Integer");
     nedsim->delay *= 1000; /* Turn milliseconds into microseconds. */
 

-    // TODO: Read in the a.out file. This should be done in the simulator's init function call?
-    nedsim->nedstate = init_simulator();
+    // Load the program file specified by the user or, if none is specified,
+    // randomly select one of the included programs.
+    char * input_file = get_string_resource(nedsim->dpy, "binary", "String");
+    if (input_file == NULL) {
+        // TODO: Need to include some default programs and randomly select one to load into RAM.
+        nedsim->nedstate = init_simulator("./test.out");
+    } else {
+        nedsim->nedstate = init_simulator(input_file);
+    }

 
     nedsim->gc = XCreateGC(nedsim->dpy, nedsim->win, GCForeground, &gcv);
 
 
     nedsim->gc = XCreateGC(nedsim->dpy, nedsim->win, GCForeground, &gcv);
 


@@ -728,8 +791,12 @@ NEDsim_reshape(Display * dpy, Window win, void * closure, unsigned int w, unsign
     XGetWindowAttributes(nedsim->dpy, nedsim->win, &xgwa);
     /* Only restart the simulation if the window changed size.                */
     if (nedsim->dpy_width != xgwa.width || nedsim->dpy_height != xgwa.height) {
     XGetWindowAttributes(nedsim->dpy, nedsim->win, &xgwa);
     /* Only restart the simulation if the window changed size.                */
     if (nedsim->dpy_width != xgwa.width || nedsim->dpy_height != xgwa.height) {

-        NEDsim_free(dpy, win, closure);
-        closure = NEDsim_init(dpy, win);
+        struct NEDstate * original_nedstate = nedsim->nedstate;
+        nedsim->nedstate = NULL;
+        NEDsim_free(dpy, win, nedsim);
+        struct NEDsim * new_nedsim = NEDsim_init(dpy, win);
+        new_nedsim->nedstate = original_nedstate;
+        closure = new_nedsim;

     }
 }
 
     }
 }
 


@@ -740,6 +807,7 @@ static const char * NEDsim_defaults[] = {
 
 static XrmOptionDescRec NEDsim_options[] = {
     { "-delay",              ".delay",                  XrmoptionSepArg, 0      },
 
 static XrmOptionDescRec NEDsim_options[] = {
     { "-delay",              ".delay",                  XrmoptionSepArg, 0      },

+    { "-binary",             ".binary",                 XrmoptionSepArg, 0      },

     { 0, 0, 0, 0 }
 };
 
     { 0, 0, 0, 0 }
 };