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Got sparkles working they way I want (considering renaming to "Light").

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This commit is contained in:
William Kendrick 2007-08-09 20:31:04 +00:00
parent 20fb6056c0
commit bac06d7069
1 changed files with 37 additions and 12 deletions
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49
magic/src/sparkles.c
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@ -23,7 +23,7 @@
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(See COPYING.txt)
Last updated: August 7, 2007
Last updated: August 9, 2007
$Id$
*/
@ -34,11 +34,12 @@
#include "SDL_image.h"
#include "SDL_mixer.h"
#include "math.h"
/* Our globals: */
Mix_Chunk * sparkles1_snd, * sparkles2_snd;
Uint8 sparkles_r, sparkles_g, sparkles_b;
float sparkles_h, sparkles_s, sparkles_v;
Uint32 sparkles_api_version(void) { return(TP_MAGIC_API_VERSION); }
@ -98,7 +99,8 @@ void do_sparkles(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last
int xx, yy;
Uint32 pix;
Uint8 r, g, b;
int div;
float h, s, v, new_h, new_s, new_v;
float adj;
for (yy = -8; yy < 8; yy++)
{
@ -110,13 +112,38 @@ void do_sparkles(void * ptr, int which, SDL_Surface * canvas, SDL_Surface * last
SDL_GetRGB(pix, canvas->format, &r, &g, &b);
div = abs(xx * yy);
if (div == 0)
div = 1;
adj = (7.99 - sqrt(abs(xx * yy))) / 128.0;
r = min(255, r + (sparkles_r / div));
g = min(255, g + (sparkles_g / div));
b = min(255, b + (sparkles_b / div));
api->rgbtohsv(r, g, b, &h, &s, &v);
v = min(1.0, v + adj);
if (sparkles_h == -1 && h == -1)
{
new_h = -1;
new_s = 0;
new_v = v;
}
else if (sparkles_h == -1)
{
new_h = h;
new_s = max(0.0, s - adj / 2.0);
new_v = v;
}
else if (h == -1)
{
new_h = sparkles_h;
new_s = max(0.0, sparkles_s - adj / 2.0);
new_v = v;
}
else
{
new_h = (sparkles_h + h) / 2;
new_s = max(0.0, s - adj / 2.0);
new_v = v;
}
api->hsvtorgb(new_h, new_s, new_v, &r, &g, &b);
api->putpixel(canvas, x + xx, y + yy,
SDL_MapRGB(canvas->format, r, g, b));
@ -176,9 +203,7 @@ void sparkles_shutdown(magic_api * api)
// Record the color from Tux Paint:
void sparkles_set_color(magic_api * api, Uint8 r, Uint8 g, Uint8 b)
{
sparkles_r = r + 10;
sparkles_g = g + 10;
sparkles_b = b + 10;
api->rgbtohsv(r, g, b, &sparkles_h, &sparkles_s, &sparkles_v);
}
// Use colors: