matthew/The-Powder-Toy
Archived
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix gravity field drawing

Browse Source
This commit is contained in:
Simon Robertshaw 2011-10-21 17:25:14 +01:00
parent 29fa590f00
commit c1eb40af61
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
src/graphics.c
View File

@ -1519,22 +1519,23 @@ void draw_grav_zones(pixel * vid)
void draw_grav(pixel *vid)
{
int x, y, i;
int x, y, i, ca;
float nx, ny, dist;
for (y=0; y<YRES/CELL; y++)
{
for (x=0; x<XRES/CELL; x++)
{
if(fabsf(gravpf[(y*XRES)+x]) <= 0.001f && fabsf(gravyf[((y*CELL)*XRES)+(x*CELL)]) <= 0.001f)
ca = ((y*CELL)*XRES)+(x*CELL);
if(fabsf(gravpf[ca]) <= 0.001f && fabsf(gravyf[ca]) <= 0.001f)
continue;
nx = x*CELL;
ny = y*CELL;
dist = fabsf(gravyf[(y*XRES)+x])+fabsf(gravxf[(y*XRES)+x]);
dist = fabsf(gravyf[ca])+fabsf(gravxf[ca]);
for(i = 0; i < 4; i++)
{
nx -= gravxf[((y*CELL)*XRES)+(x*CELL)]*0.5f;
ny -= gravyf[((y*CELL)*XRES)+(x*CELL)]*0.5f;
nx -= gravxf[ca]*0.5f;
ny -= gravyf[ca]*0.5f;
addpixel(vid, (int)(nx+0.5f), (int)(ny+0.5f), 255, 255, 255, (int)(dist*20.0f));
}
}