This is just how i pieced it together. I could be wrong here but I am at least very close. Please point out mistakes of any kind. I'll see to correct them.
Summary:
- You walk on ground with no friction at all.
- The more damage you take the longer you slide but only between 50 and 200 milliseconds(6 to 25 frames).
- It should work with other players hitting you(teamtricking).
A player takes damage(by himself). The player is pushed away relative to the damage he takes if the weapon has a knockback.
g_combat.c in function G_Damage()
- Code: Select all
knockback = damage;
if ( knockback > 200 ) {
knockback = 200;
}
if ( targ->flags & FL_NO_KNOCKBACK ) {
knockback = 0;
}
if ( dflags & DAMAGE_NO_KNOCKBACK ) {
knockback = 0;
}
A flag is set which defines the player as being pushed around. The delay until the flag is cleared is also related to the damage. At least 50 but tops 200 milliseconds (this will be your slidetime).
g_combat.c in function G_Damage()
- Code: Select all
t = knockback * 2;
if ( t < 50 ) {
t = 50;
}
if ( t > 200 ) {
t = 200;
}
targ->client->ps.pm_time = t;
targ->client->ps.pm_flags |= PMF_TIME_KNOCKBACK;
Usually, when you are hit, you can't move very well because the knockback pushes you off the ground into the air. But you never left the ground so PM_WalkMove() applies instead of PM_AirMove().
You can walk on the ground with typical air acceleration.
I guess that they removed the PMF_TIME_KNOCKBACK from this if() statement in CPM which would make the effect 10 times stronger than in VQ3. Feels right when I do so.
bg_pmove.c line 39
- Code: Select all
float pm_accelerate = 10.0f;
float pm_airaccelerate = 1.0f;
bg_pmove.c in function PM_WalkMove()
- Code: Select all
// when a player gets hit, they temporarily lose
// full control, which allows them to be moved a bit
if ( ( pml.groundTrace.surfaceFlags & SURF_SLICK ) || pm->ps->pm_flags & PMF_TIME_KNOCKBACK ) {
accelerate = pm_airaccelerate;
} else {
accelerate = pm_accelerate;
}
It's the same for Teleporterjumping. Here is the code snipped that set's the KNOCKBACK flag. Which eventually leads to a lack of ground friction.
g_misc.c in function TeleportPlayer()
- Code: Select all
// spit the player out
AngleVectors( angles, player->client->ps.velocity, NULL, NULL );
VectorScale( player->client->ps.velocity, 400, player->client->ps.velocity );
player->client->ps.pm_time = 160; // hold time
player->client->ps.pm_flags |= PMF_TIME_KNOCKBACK;
Here is the part where the PMF_TIME_KNOCKBACK leads to no friction at all. That's why you can accelerate like being on slicky ground.
bg_pmove.c in function PM_Friction()
- Code: Select all
// apply ground friction
if ( pm->waterlevel <= 1 ) {
if ( pml.walking && !(pml.groundTrace.surfaceFlags & SURF_SLICK) ) {
// if getting knocked back, no friction
if ( ! (pm->ps->pm_flags & PMF_TIME_KNOCKBACK) ) {
control = speed < pm_stopspeed ? pm_stopspeed : speed;
drop += control*pm_friction*pml.frametime;
}
}
}
My strafes won't improve from reading quake 3 engine code. Everything was already discover in Q3 engine, all bugs, all cheats ... damm hard night :ASDSAD
forever alone :'(
I'm actually a really big fan of this move even though I learnt it only just recently.