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Simplify angle/speed radius logic

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This commit is contained in:
Sally Coolatta 2022-05-30 19:30:17 -04:00
parent fae9939a25
commit ee5e96b65e
1 changed files with 27 additions and 44 deletions
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71
src/k_bot.c
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@ -961,29 +961,27 @@ static INT32 K_HandleBotTrack(player_t *player, ticcmd_t *cmd, botprediction_t *
// Handle steering towards waypoints!
INT32 turnamt = 0;
SINT8 turnsign = 0;
angle_t moveangle, angle;
INT16 anglediff;
angle_t moveangle;
INT32 anglediff;
I_Assert(predict != NULL);
moveangle = player->mo->angle;
angle = (moveangle - destangle);
anglediff = AngleDeltaSigned(moveangle, destangle);
if (angle < ANGLE_180)
if (anglediff < 0)
{
turnsign = -1; // Turn right
anglediff = AngleFixed(angle)>>FRACBITS;
turnsign = 1;
}
else
{
turnsign = 1; // Turn left
anglediff = 360-(AngleFixed(angle)>>FRACBITS);
turnsign = -1;
}
anglediff = abs(anglediff);
turnamt = KART_FULLTURN * turnsign;
if (anglediff > 90)
if (anglediff > ANGLE_90)
{
// Wrong way!
cmd->forwardmove = -MAXPLMOVE;
@ -992,7 +990,7 @@ static INT32 K_HandleBotTrack(player_t *player, ticcmd_t *cmd, botprediction_t *
else
{
const fixed_t playerwidth = (player->mo->radius * 2);
fixed_t realrad = predict->radius - (playerwidth * 4); // Remove a "safe" distance away from the edges of the road
fixed_t realrad = predict->radius*3/4; // Remove a "safe" distance away from the edges of the road
fixed_t rad = realrad;
fixed_t dirdist = K_DistanceOfLineFromPoint(
player->mo->x, player->mo->y,
@ -1000,19 +998,26 @@ static INT32 K_HandleBotTrack(player_t *player, ticcmd_t *cmd, botprediction_t *
predict->x, predict->y
);
if (realrad < player->mo->radius)
if (realrad < playerwidth)
{
realrad = player->mo->radius;
realrad = playerwidth;
}
if (anglediff > 0)
{
// Become more precise based on how hard you need to turn
// This makes predictions into turns a little nicer
// Facing 90 degrees away from the predicted point gives you a 1/3 radius
rad = FixedMul(rad, ((135 - anglediff) * FRACUNIT) / 135);
}
// Become more precise based on how hard you need to turn
// This makes predictions into turns a little nicer
// Facing 90 degrees away from the predicted point gives you 0 radius
rad = FixedMul(rad,
FixedDiv(max(0, ANGLE_90 - anglediff), ANGLE_90)
);
// Become more precise the slower you're moving
// Also helps with turns
// Full speed uses full radius
rad = FixedMul(rad,
FixedDiv(K_BotSpeedScaled(player, player->speed), K_GetKartSpeed(player, false, false))
);
// Cap the radius to reasonable bounds
if (rad > realrad)
{
rad = realrad;
@ -1022,36 +1027,14 @@ static INT32 K_HandleBotTrack(player_t *player, ticcmd_t *cmd, botprediction_t *
rad = playerwidth;
}
cmd->buttons |= BT_ACCELERATE;
// Full speed ahead!
cmd->buttons |= BT_ACCELERATE;
cmd->forwardmove = MAXPLMOVE;
if (dirdist <= rad)
{
fixed_t speedmul = FixedDiv(K_BotSpeedScaled(player, player->speed), K_GetKartSpeed(player, false, false));
fixed_t speedrad = rad/4;
if (speedmul > FRACUNIT)
{
speedmul = FRACUNIT;
}
// Increase radius with speed
// At low speed, the CPU will try to be more accurate
// At high speed, they're more likely to lawnmower
speedrad += FixedMul(speedmul, rad - speedrad);
if (speedrad < playerwidth)
{
speedrad = playerwidth;
}
if (dirdist <= speedrad)
{
// Don't turn at all
turnamt = 0;
}
// Going the right way, don't turn at all.
turnamt = 0;
}
}