void Effects_TV_Init(void)
{
int i;
tv_effect.start_line = SMS_RES_Y / 2;
for (i = 0; i != TV_EFFECT_COLORS_MAX; i++)
tv_effect.colors[i] = makecol16(i * 16, i * 16, i * 16);
}
/* makeacol_depth:
* Converts R, G, B, and A values (ranging 0-255) to whatever pixel format
* is required by the specified color depth.
*/
int makeacol_depth(int color_depth, int r, int g, int b, int a)
{
switch (color_depth) {
case 8:
return makecol8(r, g, b);
case 15:
return makecol15(r, g, b);
case 16:
return makecol16(r, g, b);
case 24:
return makecol24(r, g, b);
case 32:
return makeacol32(r, g, b, a);
}
return 0;
}
void render_plasma(int time) {
int pcolor,ptmpr,ptmpg,ptmpb;
float pval;
//float PT = ((float) time);
for (int y = 0; y < SCREEN_H; y++) {
short *line = ((short*)buffer->line[y]);
//float PY = (((float)y / SCREEN_H ) *AL_PI);
for (int x = 0; x < SCREEN_W; x++) {
//float PX = (((float)x / SCREEN_W ) *AL_PI);
//really old version
//hsv_to_rgb((sin(((float)x/32)+(sin((float)y)/10)+((float)time/10)) * 180)+180,
//(cos(time-sqrt((((float)x/2)-(SCREEN_W/2))+(((float)x/5)-(SCREEN_W/2))*(((float)y/10)-(SCREEN_H/2))+(((float)y/9)-(SCREEN_H/2))))*0.5f)+0.5f,
//(sin(time+sqrt((((float)x/6)-(SCREEN_W/2))+(((float)x/6)-(SCREEN_W/2))*(((float)y/6)-(SCREEN_H/2))+(((float)y/6)-(SCREEN_H/2))))*0.5f)+0.5f,
//&ptmp[0],&ptmp[1],&ptmp[2]);
//not so old version
//pval = ((
//sinf(PX*10+PT) +
//sinf(10 * (PX*sinf(PT/2)+PY*cosf(PT/33))+time) +
//sinf(sqrtf(100*(powf(PX +0.5f*sinf(PT / 5),2) + powf(PY +0.5f*sinf(PT / 3),2))+1)+time)
//));
//ptmpr = (int)(sinf(pval*AL_PI)*255) & 0xFF;
//ptmpg = (int)(cosf(pval*AL_PI)*255) & 0xFF;
//ptmpb = 0;
//pcolor = makecol16(ptmpr,ptmpg,ptmpb);
//line[x] = pcolor;
float value = sinf(dist(x + time, y, 400, 300) / 8.0)
+ sinf(dist(x, y, 200, 150) / 8.0)
+ sinf(dist(x, y + time / 7, 600, 150) / 7.0)
+ sinf(dist(x, y, 600, 200) / 8.0);
int color = (4 + value) * 32;
pcolor = makecol16(color, color * 2, 255 - color);
line[x] = pcolor;
}
}
}
int convert_color_to_allegro<IndexedTraits, 16>(color_t color, const Palette* palette) {
color_t c = palette->getEntry(color);
return makecol16(rgba_getr(c), rgba_getg(c), rgba_getb(c));
}
int convert_color_to_allegro<GrayscaleTraits, 16>(color_t c, const Palette* palette) {
return makecol16(graya_getv(c), graya_getv(c), graya_getv(c));
}
int convert_color_to_allegro<RgbTraits, 16>(color_t c, const Palette* palette) {
return makecol16(rgba_getr(c), rgba_getg(c), rgba_getb(c));
}
