diff options
Diffstat (limited to 'src/user/highway/vars.c')
| -rw-r--r-- | src/user/highway/vars.c | 44 |
1 files changed, 39 insertions, 5 deletions
diff --git a/src/user/highway/vars.c b/src/user/highway/vars.c index ed9fa3a..2d53c3a 100644 --- a/src/user/highway/vars.c +++ b/src/user/highway/vars.c @@ -84,7 +84,7 @@ void dump_vars() { } static const char hex_digits[] = "0123456789abcdef"; -static char color[] = {'1', '0', '.', '.'}; +static char color[12] = "000000......"; static const struct no_null_sn color_name = { .data = "_color", @@ -93,12 +93,46 @@ static const struct no_null_sn color_name = { static const struct no_null_sn color_value = { .data = color, - .length = 4 + .length = 12 }; void new_color() { - const uint8_t bg = gen_rand() % 0x30 + 0x38; - color[2] = hex_digits[bg >> 4]; - color[3] = hex_digits[bg & 0xf]; + const uint16_t hue = gen_rand() % (0x33 * 6); + _pixel_t bg = {.r = 0xff, .g = 0xcc, .b = 0xcc}; + if (hue <= 0x33) { + bg.b += hue; + goto got_bg; + } + bg.b += 0x33; + if (hue <= 0x33 * 2) { + bg.r -= hue - 0x33; + goto got_bg; + } + bg.r -= 0x33; + if (hue <= 0x33 * 3) { + bg.g += hue - 0x33 * 2; + goto got_bg; + } + bg.g += 0x33; + if (hue <= 0x33 * 4) { + bg.b -= hue - 0x33 * 3; + goto got_bg; + } + bg.b -= 0x33; + if (hue <= 0x33 * 5) { + bg.r += hue - 0x33 * 4; + goto got_bg; + } + bg.r += 0x33; + bg.g -= hue - 0x33 * 5; + +got_bg: + color[ 6] = hex_digits[bg.r / 16]; + color[ 7] = hex_digits[bg.r % 16]; + color[ 8] = hex_digits[bg.g / 16]; + color[ 9] = hex_digits[bg.g % 16]; + color[10] = hex_digits[bg.b / 16]; + color[11] = hex_digits[bg.b % 16]; + set_var(color_name, color_value); }
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