void JE_outTextAndDarken( SDL_Surface * screen, int x, int y, const char *s, uint32_t colorbank, uint32_t brightness, uint32_t font )
{
int bright = 0;
for (int i = 0; s[i] != '\0'; ++i)
{
int sprite_id = font_ascii[(uint8_t)s[i]];
switch (s[i])
{
case ' ':
x += 6;
break;
case '~':
bright = (bright == 0) ? 4 : 0;
break;
default:
if (sprite_id != -1 && sprite_exists(TINY_FONT, sprite_id))
{
blit_sprite_dark(screen, x + 1, y + 1, font, sprite_id, false);
blit_sprite_hv_unsafe(screen, x, y, font, sprite_id, colorbank, brightness + bright);
x += sprite(font, sprite_id)->width + 1;
}
break;
}
}
}
// does not clip on left or right edges of surface
// unsafe because it doesn't check that value won't overflow into hue
// we can replace it when we know that we don't rely on that 'feature'
void blit_sprite_hv_unsafe( SDL_Surface *surface, int x, int y, unsigned int table, unsigned int index, Uint8 hue, Sint8 value )
{
if (index >= sprite_table[table].count || !sprite_exists(table, index))
{
assert(false);
return;
}
hue <<= 4;
const Sprite * const cur_sprite = sprite(table, index);
const Uint8 *data = cur_sprite->data;
const Uint8 * const data_ul = data + cur_sprite->size;
const unsigned int width = cur_sprite->width;
unsigned int x_offset = 0;
assert(surface->format->BitsPerPixel == 8);
Uint8 * pixels = (Uint8 *)surface->pixels + (y * surface->pitch) + x;
const Uint8 * const pixels_ll = (Uint8 *)surface->pixels, // lower limit
* const pixels_ul = (Uint8 *)surface->pixels + (surface->h * surface->pitch); // upper limit
for (; data < data_ul; ++data)
{
switch (*data)
{
case 255: // transparent pixels
data++; // next byte tells how many
pixels += *data;
x_offset += *data;
break;
case 254: // next pixel row
pixels += width - x_offset;
x_offset = width;
break;
case 253: // 1 transparent pixel
pixels++;
x_offset++;
break;
default: // set a pixel
if (pixels >= pixels_ul)
return;
if (pixels >= pixels_ll)
*pixels = hue | ((*data & 0x0f) + value);
pixels++;
x_offset++;
break;
}
if (x_offset >= width)
{
pixels += surface->pitch - x_offset;
x_offset = 0;
}
}
}
void JE_outTextAdjust( SDL_Surface * screen, int x, int y, const char *s, uint32_t filter, int brightness, uint32_t font, bool shadow )
{
int bright = 0;
for (int i = 0; s[i] != '\0'; ++i)
{
int sprite_id = font_ascii[(uint8_t)s[i]];
switch (s[i])
{
case ' ':
x += 6;
break;
case '~':
bright = (bright == 0) ? 4 : 0;
break;
default:
if (sprite_id != -1 && sprite_exists(TINY_FONT, sprite_id))
{
if (shadow)
blit_sprite_dark(screen, x + 2, y + 2, font, sprite_id, false);
blit_sprite_hv(screen, x, y, font, sprite_id, filter, brightness + bright);
x += sprite(font, sprite_id)->width + 1;
}
break;
}
}
}
/**
* \brief Draws text in a color specified by hue and value.
*
* A '~' in the text is not drawn but instead toggles highlighting which
* increases \c value by 4.
*
* \li like JE_outText() with (brightness >= 0)
* \li like JE_outTextAdjust() without shadow
*
* @param surface destination surface
* @param x initial x-position in pixels; which direction(s) the text is drawn
* from this position depends on the alignment
* @param y initial upper y-position in pixels
* @param text text to be drawn
* @param font style/size of text
* @param alignment left_aligned, centered, or right_aligned
* @param hue hue component of text color
* @param value value component of text color
*/
void draw_font_hv( SDL_Surface *surface, int x, int y, const char *text, Font font, FontAlignment alignment, Uint8 hue, Sint8 value )
{
switch (alignment)
{
case left_aligned:
break;
case centered:
x -= JE_textWidth(text, font) / 2;
break;
case right_aligned:
x -= JE_textWidth(text, font);
break;
}
bool highlight = false;
for (; *text != '\0'; ++text)
{
int sprite_id = font_ascii[(unsigned char)*text];
switch (*text)
{
case ' ':
x += 6;
break;
case '~':
highlight = !highlight;
if (highlight)
value += 4;
else
value -= 4;
break;
default:
if (sprite_id != -1 && sprite_exists(font, sprite_id))
{
blit_sprite_hv(surface, x, y, font, sprite_id, hue, value);
x += sprite(font, sprite_id)->width + 1;
}
break;
}
}
}
/**
* \brief Draws darkened text.
*
* Corresponds to blit_sprite_dark()
*
* \li like JE_outText() with (brightness < 0) if (black == true)
*
* @param surface destination surface
* @param x initial x-position in pixels; which direction(s) the text is drawn
* from this position depends on the alignment
* @param y initial upper y-position in pixels
* @param text text to be drawn
* @param font style/size of text
* @param alignment left_aligned, centered, or right_aligned
* @param black if true text is drawn as solid black, if false text is drawn by
* darkening the pixels of the destination surface
*/
void draw_font_dark( SDL_Surface *surface, int x, int y, const char *text, Font font, FontAlignment alignment, bool black )
{
switch (alignment)
{
case left_aligned:
break;
case centered:
x -= JE_textWidth(text, font) / 2;
break;
case right_aligned:
x -= JE_textWidth(text, font);
break;
}
for (; *text != '\0'; ++text)
{
int sprite_id = font_ascii[(unsigned char)*text];
switch (*text)
{
case ' ':
x += 6;
break;
case '~':
break;
default:
if (sprite_id != -1 && sprite_exists(font, sprite_id))
{
blit_sprite_dark(surface, x, y, font, sprite_id, black);
x += sprite(font, sprite_id)->width + 1;
}
break;
}
}
}
