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fixed rate player physics

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git-svn-id: svn://svn.code.sf.net/p/actiongame/code/trunk/ac@2045 e016b1c5-ed68-44aa-a2f7-31cac88cffde
This commit is contained in:
Lee Salzman
2008-05-18 22:37:23 +00:00
parent 45beb9bf3f
commit ffd20aad39
2 changed files with 11 additions and 34 deletions
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source/src/physics.cpp
+7 -30
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@@ -476,53 +476,30 @@ void moveplayer(physent *pl, int moveres, bool local, int curtime)
// End add
}
const int MINFRAMETIME = 5;
const int PHYSFPS = 200;
const int PHYSFRAMETIME = 1000 / PHYSFPS;
int physicsfraction = 0, physicsrepeat = 0;
void playerphysicsframe() // optimally schedule physics frames inside the graphics frames
{
if(curtime>=MINFRAMETIME)
{
int faketime = curtime+physicsfraction;
physicsrepeat = faketime/MINFRAMETIME;
physicsfraction = faketime%MINFRAMETIME;
}
else
{
physicsrepeat = curtime>0 ? 1 : 0;
}
}
const int PHYSFPS = 100;
const int PHYSFRAMETIME = 1000 / PHYSFPS;
int fixedphysrepeat = 0;
void entityphysicsframe() // entity physics at fixed fps
{
static int lastframemillis = 0;
static int fract = 0;
int elapsed = lastmillis-lastframemillis+fract;
fixedphysrepeat = elapsed/PHYSFRAMETIME;
fract = elapsed%PHYSFRAMETIME;
if(fixedphysrepeat > 0) lastframemillis = lastmillis;
int faketime = curtime+physicsfraction;
physicsrepeat = faketime/PHYSFRAMETIME;
physicsfraction = faketime%PHYSFRAMETIME;
}
void physicsframe()
{
playerphysicsframe();
entityphysicsframe();
}
void moveplayer(physent *p, int moveres, bool local)
{
loopi(physicsrepeat) moveplayer(p, moveres, local, min(curtime, MINFRAMETIME));
loopi(physicsrepeat) moveplayer(p, moveres, local, PHYSFRAMETIME);
}
void movebounceent(bounceent *p, int moveres, bool local)
{
loopi(fixedphysrepeat) moveplayer(p, moveres, local, PHYSFRAMETIME);
loopi(physicsrepeat) moveplayer(p, moveres, local, PHYSFRAMETIME);
}
// movement input code