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Fix bots going in reverse for no reason in races

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On some maps bots went in reverse right away or got (almost to?) the
first checkpoint and then went in reverse forever. Race movement uses
derivatives on a curve but they seem to be invalid at fraction 0 and 1
so limit it to 0.05 to 0.95 (arbitrary).

This change fixes bots being stuck near the beginning of q3r_nightcity,
q3r_ridgeracer, and q3r_valley. The bots can complete the maps now.
This commit is contained in:
Zack Middleton 2023-06-04 18:14:48 -05:00
parent 43101bf2f8
commit 51578c980c
1 changed files with 9 additions and 0 deletions
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9
engine/code/game/ai_dmnet.c
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@ -3070,6 +3070,15 @@ int AINode_MoveToNextCheckpoint( bot_state_t *bs )
// Com_Printf( "f %f\n", f );
// Bot goes backward if f is 0 or 1 so limit range.
// origin is fine but derivitives seem to be invalid.
// --zturtleman
if ( f > 0.95f ) {
f = 0.95f;
} else if ( f < 0.05f ) {
f = 0.05f;
}
G_GetPointOnCurveBetweenCheckpoints( prev, next, f, origin );
G_Get2ndDervOnCurveBetweenCheckpoints( prev, next, f, alpha );
G_GetDervOnCurveBetweenCheckpoints( prev, next, f, delta );