This means our new speed will also be the same as the old which would beДЇloat flNewSpeed = ( flSpeedAddition + mv->m_vecVelocity.Length2D() ) = 0 + 352 = 352Д«ecause your speed is over the threshold when landing (we land at 352 UPS which is higher than the 209 UPS threshold when crouching), the game does the speed bound routine. This means our additional speed we get will also be 0.ДЇloat flSpeedAddition = fabs( mv->m_flForwardMove * flSpeedBoostPerc ) = fabs(0 * 0.1) = 0

Ideally mv->m_flForwardMove should be 190 but because we are not holding any directional keys, it is 0 instead. When the player sprints and then jump backwards, their speed will be negative and when they land and crouchjump, our speed will be 352 UPS. In the calculations below, we'll assume that inputs are frame-perfect without any loss of speed. Normally an ABH is done by doing a backward sprintjump, crouch in midair, land and continue jumping without holding any directional keys. If we're over the maximum, we want to only boost as much as will get us to the goal speedДЇlSpeedAddition -= flNewSpeed - flMaxSpeed ДЄfter all the steps above, the game takes the newly acquired flSpeedAddition and apply it onto the player's speed. If it is too high, calculate the new amount of speed to apply onto the player using an equation. Check if the player's new speed is higher than the maximum.It does this by simply take the flSpeedAddition and adding it to the player's initial speed when they jump.ДЇloat flNewSpeed = ( flSpeedAddition + mv->m_vecVelocity.Length2D() ) Calculate the player's initial new speed flNewSpeed.Calculate the maximum speed flMaxSpeed for bounding the player's speed later on.ДЇloat flMaxSpeed = mv->m_flMaxSpeed + ( mv->m_flMaxSpeed * flSpeedBoostPerc ).Mv->m_flForwardMove is the normal speed you move in the state you jumped in, so when you do a sprint jump, it is 320 a running jump is 190. The way the game calculates the addition speed is to take the absolute value of the product of mv->m_flForwardMove and flSpeedBoostPercДЇloat flSpeedAddition = fabs( mv->m_flForwardMove * flSpeedBoostPerc ) Calculate the initial flSpeedAddition which is the amount of speed to add onto the player's existing speed.The game calculates flSpeedBoostPerc based on the state of the player when they jump, so when we are crouched or we are sprinting, it chooses 0.1 for other states like running or walking, it chooses 0.5.ДЇloat flSpeedBoostPerc = (В !pMoveData->m_bIsSprinting &В !player->m_Local.m_bDucked )В ? 0.5fВ : 0.1f Calculate flSpeedBoostPerc to figure out the multiplier for calculating the additional speed and maximum speed for bounding it.The game goes through a few steps to decide how much to add to player speed and whether to subtract instead. How the game calculates and bounds your speed when bunnyhopping Substitute flMaxSpeed with the Speed limits from the table above and you will have your new speed. Note that some conditions will not give you speed because of how the speed is calculated.Дucking while doing ABH is recommended since it has the lowest speedcap of all states at 209 UPS.Д¬ompounding all the flaws shown below, we can calculate our next speed after an ABH (given that the jump is perfect and there is no angle change) with the equation below: The table below will show those thresholds and first ABH speeds if you sprint jump then enter the conditions listed and frame-perfectly do ABH's. The speed threshold is based on the state of the player when you jump. However if you are moving backwards when the game bounds your speed, the game will try to slow you down by adding backward speed, consequently accelerating you.ДЄs mentioned above, the amount of backward speed the game applies on you is based on your speed when you jump, so the faster you go, the more speed you'll get.Д«ecause of this, you can accelerate extremely fast, much faster than bunnyhopping.ДЄBHing and Bunnyhopping comparison chart, shows the speed gain on each jump (no sprint). When your speed is over the limit, by default the game assumes you are always moving forward so the game accelerate you backwards to reduce your speed down to the threshold. Binding +jump to mouse wheel or using a jumping script is recommended as it makes timing jumps a lot easier.ДЄBH works due to Valve not accounting for the direction of the player's speed when capping it, thus leading to the directly opposite result of accelerating the player even further.Д«unnyhopping is capped if your speed on your jump exceeds a certain threshold. It's recommended not to hold S or W (or your respective keys for moving forwards and back) while ABHing. Jump forward, turn around in the air and jump right as you land. 2.2 How the game calculates and bounds your speed when bunnyhopping.

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