void FontTTF::fontToGlyph(TTF_Font *font, unsigned char *texels) {
SDL_Color white = { 255, 255, 255, 255 };
int r, g, b, a, xPos, yPos;
int currentASCII = -1;
for (int i = 0; i < 16; i++) {
for (int j = 0; j < 16; j++) {
currentASCII++;
if (currentASCII == 0) { continue; }
char letter[2] = {currentASCII, 0};
xPos = j * _cellWidth;
yPos = i * _cellHeight;
SDL_Surface *renderedLetter = TTF_RenderText_Blended(font, letter, white);
for (int w = 0; w < renderedLetter->w; w++) {
for (int h = 0; h < renderedLetter->h; h++) {
SDL_GetPixel(renderedLetter, w, renderedLetter->h - 1 - h, r, g, b, a);
texels[((yPos + h) * _texWidth) + (xPos + w)] = a;
}
}
SDL_FreeSurface(renderedLetter);
}
}
}
double Map::terrainHeight(int _x, int _y)
{
int x(_x),y(_y);
if (x < 0) x=0;
if (y < 0) y=0;
if (x >= getSize().x) x = getSize().x-1;
if (y >= getSize().y) y = getSize().y-1;
Uint8 r,g,b;
SDL_GetRGB(
SDL_GetPixel(terrain,x,y),
terrain->format,
&r,&g,&b);
return (double)(r)/255.0f*MAX_HEIGHT;
}
bool CSDL_Ext::isTransparent( SDL_Surface * srf, int x, int y )
{
if (x < 0 || y < 0 || x >= srf->w || y >= srf->h)
return true;
SDL_Color color;
SDL_GetRGBA(SDL_GetPixel(srf, x, y), srf->format, &color.r, &color.g, &color.b, &color.unused);
// color is considered transparent here if
// a) image has aplha: less than 50% transparency
// b) no alpha: color is cyan
if (srf->format->Amask)
return color.unused < 128; // almost transparent
else
return (color.r == 0 && color.g == 255 && color.b == 255);
}
