X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=sgt-puzzles.git;a=blobdiff_plain;f=misc.c;h=c1a595fefa77a4dffa1b560f03f7d416e2ba52eb;hp=d3ab815a6416b7c7d5e5ffdaa983bcad53953884;hb=refs%2Fheads%2Ffor-aldabra;hpb=ab80d0b7fdd07bfc9037a44df97d862ce5e986ea

diff --git a/misc.c b/misc.c
index d3ab815..c1a595f 100644
--- a/misc.c
+++ b/misc.c
@@ -187,8 +187,10 @@ void game_mkhighlight_specific(frontend *fe, float *ret,
     }
 
     for (i = 0; i < 3; i++) {
-        ret[highlight * 3 + i] = ret[background * 3 + i] * 1.2F;
-        ret[lowlight * 3 + i] = ret[background * 3 + i] * 0.8F;
+	if (highlight >= 0)
+	    ret[highlight * 3 + i] = ret[background * 3 + i] * 1.2F;
+	if (lowlight >= 0)
+	    ret[lowlight * 3 + i] = ret[background * 3 + i] * 0.8F;
     }
 }
 
@@ -244,4 +246,130 @@ void draw_rect_outline(drawing *dr, int x, int y, int w, int h, int colour)
     draw_polygon(dr, coords, 4, -1, colour);
 }
 
+void draw_rect_corners(drawing *dr, int cx, int cy, int r, int col)
+{
+    draw_line(dr, cx - r, cy - r, cx - r, cy - r/2, col);
+    draw_line(dr, cx - r, cy - r, cx - r/2, cy - r, col);
+    draw_line(dr, cx - r, cy + r, cx - r, cy + r/2, col);
+    draw_line(dr, cx - r, cy + r, cx - r/2, cy + r, col);
+    draw_line(dr, cx + r, cy - r, cx + r, cy - r/2, col);
+    draw_line(dr, cx + r, cy - r, cx + r/2, cy - r, col);
+    draw_line(dr, cx + r, cy + r, cx + r, cy + r/2, col);
+    draw_line(dr, cx + r, cy + r, cx + r/2, cy + r, col);
+}
+
+void move_cursor(int button, int *x, int *y, int maxw, int maxh, int wrap)
+{
+    int dx = 0, dy = 0;
+    switch (button) {
+    case CURSOR_UP:         dy = -1; break;
+    case CURSOR_DOWN:       dy = 1; break;
+    case CURSOR_RIGHT:      dx = 1; break;
+    case CURSOR_LEFT:       dx = -1; break;
+    default: return;
+    }
+    if (wrap) {
+        *x = (*x + dx + maxw) % maxw;
+        *y = (*y + dy + maxh) % maxh;
+    } else {
+        *x = min(max(*x+dx, 0), maxw - 1);
+        *y = min(max(*y+dy, 0), maxh - 1);
+    }
+}
+
+/* Used in netslide.c and sixteen.c for cursor movement around edge. */
+
+int c2pos(int w, int h, int cx, int cy)
+{
+    if (cy == -1)
+        return cx;                      /* top row, 0 .. w-1 (->) */
+    else if (cx == w)
+        return w + cy;                  /* R col, w .. w+h -1 (v) */
+    else if (cy == h)
+        return w + h + (w-cx-1);        /* bottom row, w+h .. w+h+w-1 (<-) */
+    else if (cx == -1)
+        return w + h + w + (h-cy-1);    /* L col, w+h+w .. w+h+w+h-1 (^) */
+
+    assert(!"invalid cursor pos!");
+    return -1; /* not reached */
+}
+
+int c2diff(int w, int h, int cx, int cy, int button)
+{
+    int diff = 0;
+
+    assert(IS_CURSOR_MOVE(button));
+
+    /* Obvious moves around edge. */
+    if (cy == -1)
+        diff = (button == CURSOR_RIGHT) ? +1 : (button == CURSOR_LEFT) ? -1 : diff;
+    if (cy == h)
+        diff = (button == CURSOR_RIGHT) ? -1 : (button == CURSOR_LEFT) ? +1 : diff;
+    if (cx == -1)
+        diff = (button == CURSOR_UP) ? +1 : (button == CURSOR_DOWN) ? -1 : diff;
+    if (cx == w)
+        diff = (button == CURSOR_UP) ? -1 : (button == CURSOR_DOWN) ? +1 : diff;
+
+    if (button == CURSOR_LEFT && cx == w && (cy == 0 || cy == h-1))
+        diff = (cy == 0) ? -1 : +1;
+    if (button == CURSOR_RIGHT && cx == -1 && (cy == 0 || cy == h-1))
+        diff = (cy == 0) ? +1 : -1;
+    if (button == CURSOR_DOWN && cy == -1 && (cx == 0 || cx == w-1))
+        diff = (cx == 0) ? -1 : +1;
+    if (button == CURSOR_UP && cy == h && (cx == 0 || cx == w-1))
+        diff = (cx == 0) ? +1 : -1;
+
+    debug(("cx,cy = %d,%d; w%d h%d, diff = %d", cx, cy, w, h, diff));
+    return diff;
+}
+
+void pos2c(int w, int h, int pos, int *cx, int *cy)
+{
+    int max = w+h+w+h;
+
+    pos = (pos + max) % max;
+
+    if (pos < w) {
+        *cx = pos; *cy = -1; return;
+    }
+    pos -= w;
+    if (pos < h) {
+        *cx = w; *cy = pos; return;
+    }
+    pos -= h;
+    if (pos < w) {
+        *cx = w-pos-1; *cy = h; return;
+    }
+    pos -= w;
+    if (pos < h) {
+      *cx = -1; *cy = h-pos-1; return;
+    }
+    assert(!"invalid pos, huh?"); /* limited by % above! */
+}
+
+void draw_text_outline(drawing *dr, int x, int y, int fonttype,
+                       int fontsize, int align,
+                       int text_colour, int outline_colour, char *text)
+{
+    if (outline_colour > -1) {
+        draw_text(dr, x-1, y, fonttype, fontsize, align, outline_colour, text);
+        draw_text(dr, x+1, y, fonttype, fontsize, align, outline_colour, text);
+        draw_text(dr, x, y-1, fonttype, fontsize, align, outline_colour, text);
+        draw_text(dr, x, y+1, fonttype, fontsize, align, outline_colour, text);
+    }
+    draw_text(dr, x, y, fonttype, fontsize, align, text_colour, text);
+
+}
+
+/* kludge for sprintf() in Rockbox not supporting "%-8.8s" */
+void copy_left_justified(char *buf, size_t sz, const char *str)
+{
+    size_t len = strlen(str);
+    assert(sz > 0);
+    memset(buf, ' ', sz - 1);
+    assert(len <= sz - 1);
+    memcpy(buf, str, len);
+    buf[sz - 1] = 0;
+}
+
 /* vim: set shiftwidth=4 tabstop=8: */