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| author | Simon Robertshaw <simon@hardwired.org.uk> | 2011-04-24 16:49:33 (GMT) |
|---|---|---|
| committer | Simon Robertshaw <simon@hardwired.org.uk> | 2011-04-24 16:49:33 (GMT) |
| commit | 3acf9aae2aac9865cead77870010681cb390ba19 (patch) | |
| tree | df28d9dc831c0b1716a35fd77d4a3c72baed6601 /src/air.c | |
| parent | db427e4cdd240f46eafc17a76bf27de347ca8a96 (diff) | |
| download | powder-3acf9aae2aac9865cead77870010681cb390ba19.zip powder-3acf9aae2aac9865cead77870010681cb390ba19.tar.gz | |
Asynchronous thread for gravity processing
Diffstat (limited to 'src/air.c')
| -rw-r--r-- | src/air.c | 24 |
1 files changed, 14 insertions, 10 deletions
@@ -4,11 +4,15 @@ #include <defines.h> float kernel[9]; -float ogravmap[YRES/CELL][XRES/CELL]; -float gravmap[YRES/CELL][XRES/CELL]; +float gravmap[YRES/CELL][XRES/CELL]; //Maps to be used by the main thread float gravx[YRES/CELL][XRES/CELL]; float gravy[YRES/CELL][XRES/CELL]; +float th_ogravmap[YRES/CELL][XRES/CELL]; // Maps to be processed by the gravity thread +float th_gravmap[YRES/CELL][XRES/CELL]; +float th_gravx[YRES/CELL][XRES/CELL]; +float th_gravy[YRES/CELL][XRES/CELL]; + float vx[YRES/CELL][XRES/CELL], ovx[YRES/CELL][XRES/CELL]; float vy[YRES/CELL][XRES/CELL], ovy[YRES/CELL][XRES/CELL]; float pv[YRES/CELL][XRES/CELL], opv[YRES/CELL][XRES/CELL]; @@ -44,7 +48,7 @@ void update_grav(void) break; for (j=0; j<XRES/CELL; j++) { - if(ogravmap[i][j]!=gravmap[i][j]){ + if(th_ogravmap[i][j]!=th_gravmap[i][j]){ changed = 1; break; } @@ -52,13 +56,13 @@ void update_grav(void) } if(changed) { - memset(gravy, 0, sizeof(gravy)); - memset(gravx, 0, sizeof(gravx)); + memset(th_gravy, 0, sizeof(th_gravy)); + memset(th_gravx, 0, sizeof(th_gravx)); for (i=0; i<YRES/CELL; i++) { for (j=0; j<XRES/CELL; j++) { - if(gravmap[i][j]>0.0f) //Only calculate with populated or changed cells. + if(th_gravmap[i][j]>0.0f) //Only calculate with populated or changed cells. for (y=0; y<YRES/CELL; y++) { for (x=0; x<XRES/CELL; x++) @@ -66,15 +70,15 @@ void update_grav(void) if(x == j && y == i)//Ensure it doesn't calculate with itself continue; float distance = sqrt(pow(j - x, 2) + pow(i - y, 2)); - gravx[y][x] += M_GRAV*gravmap[i][j]*(j - x)/pow(distance, 3); - gravy[y][x] += M_GRAV*gravmap[i][j]*(i - y)/pow(distance, 3); + th_gravx[y][x] += M_GRAV*th_gravmap[i][j]*(j - x)/pow(distance, 3); + th_gravy[y][x] += M_GRAV*th_gravmap[i][j]*(i - y)/pow(distance, 3); } } } } } - memcpy(ogravmap, gravmap, sizeof(gravmap)); - memset(gravmap, 0, sizeof(gravmap)); + memcpy(th_ogravmap, th_gravmap, sizeof(th_gravmap)); + memset(th_gravmap, 0, sizeof(th_gravmap)); } void update_air(void) { |