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Implement adding velocity to player from Lua

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The intended usecase is knockback, but there's potential for more.
This commit is contained in:
sfan5 2019-07-16 14:00:42 +02:00
parent b19400aa74
commit cf64054390
14 changed files with 105 additions and 2 deletions
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25
src/content_sao.cpp
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@ -1091,6 +1091,7 @@ void PlayerSAO::step(float dtime, bool send_recommended)
m_time_from_last_teleport += dtime;
m_time_from_last_punch += dtime;
m_nocheat_dig_time += dtime;
m_max_speed_override_time = MYMAX(m_max_speed_override_time - dtime, 0.0f);
// Each frame, parent position is copied if the object is attached,
// otherwise it's calculated normally.
@ -1412,6 +1413,19 @@ std::string PlayerSAO::getPropertyPacket()
return gob_cmd_set_properties(m_prop);
}
void PlayerSAO::setMaxSpeedOverride(const v3f &vel)
{
if (m_max_speed_override_time == 0.0f)
m_max_speed_override = vel;
else
m_max_speed_override += vel;
if (m_player) {
float accel = MYMIN(m_player->movement_acceleration_default,
m_player->movement_acceleration_air);
m_max_speed_override_time = m_max_speed_override.getLength() / accel / BS;
}
}
bool PlayerSAO::checkMovementCheat()
{
if (isAttached() || m_is_singleplayer ||
@ -1431,6 +1445,14 @@ bool PlayerSAO::checkMovementCheat()
too, and much more lightweight.
*/
float override_max_H, override_max_V;
if (m_max_speed_override_time > 0.0f) {
override_max_H = MYMAX(fabs(m_max_speed_override.X), fabs(m_max_speed_override.Z));
override_max_V = fabs(m_max_speed_override.Y);
} else {
override_max_H = override_max_V = 0.0f;
}
float player_max_walk = 0; // horizontal movement
float player_max_jump = 0; // vertical upwards movement
@ -1439,10 +1461,13 @@ bool PlayerSAO::checkMovementCheat()
else
player_max_walk = m_player->movement_speed_walk; // Normal speed
player_max_walk *= m_physics_override_speed;
player_max_walk = MYMAX(player_max_walk, override_max_H);
player_max_jump = m_player->movement_speed_jump * m_physics_override_jump;
// FIXME: Bouncy nodes cause practically unbound increase in Y speed,
// until this can be verified correctly, tolerate higher jumping speeds
player_max_jump *= 2.0;
player_max_jump = MYMAX(player_max_jump, override_max_V);
// Don't divide by zero!
if (player_max_walk < 0.0001f)