Trick System

Description
The player can perform tricks when in the air. Some conditions apply:
The trick button must have been pressed recently. This starts a counter during which the game will listen for inputs to determine which trick to perform. If the counter ends without input there´s no penalty.
If the player jumps using a ramp he can press the trick button to get a jump boost and automatically start the trick window. This allows to launch tricks earlier in the air.
Tricks are executed in level order.

Option 1: Each trick being an evolution of the previous one:

• Trick button+Left=Flip Backwards (Lvl1) -> TB+Down=RollFlip Backwards (Lvl2) -> TB+Up=Total Rotation (Lvl3).

Option 2: Each trick input is independent:

• TB + Left = Flip Backwards (Lvl1)->TB+Left,Down = RollFlip Backwards (Lvl2) -> TB+Left, Down, Up=Total Rotation (Lvl3).

Option 1 allows for simpler controls, but doesn´t enforce variety and there are much fewer possible combinations. For example, to do a Triple Flip B the only possible sequence is L, L, L. It forces the player to plan ahead the tricks and makes it so after a Lvl3 trick only other Lvl3 tricks can be performed.
Option 2 has more complex inputs but gives more freedom to the player, as any combination can be made, even lower level tricks can be performed after a Lvl3 trick has been done. It will also allow to make longer jumps and rise the requirements to Lvl3 tricks to something like Lvl1+Lvl2+Lvl2->Lvl3.

Seeing as in the air the player can´t move and the only possible inputs are turbo (not required) and trick button (for landing, already using it to perform tricks), Option 2 seems better. Special attention must be paid to the time it takes to execute the tricks so the player can make the necessary inputs.

Option 3: Each trick is an evolution of the ones before it:

• TB+Left=Flip B (Lvl1)->TB+Up=Spin(Lvl1)->TB+TB=SpinFlip B (Lvl2)
• TB+Left=Flip B (Lvl1)->TB+Up=Spin(Lvl1)->TB+Down=Total Rotation (Lvl3)
• TB+Left=Flip B (Lvl1)->TB+Up=Spin(Lvl1)->TB+TB=SpinFlip B (Lvl2)->TB+Down=Total Rotation (Lvl3)

This way combinations like Lvl1->Lvl1->Lvl2, Lvl1->Lvl1->Lvl3, Lvl1->Lvl1->Lvl2->Lvl3 can be done.This gives more flexibility as after performing 2 level 1 tricks the player can opt to go for a Lvl2 trick or a longer Lvl3 trick, while maintaining the inputs simple. At the same time, the player must plan ahead the trick inputs to reach the desired Lvl3 trick. After reaching Lvl3 the first input is discarded, so the player can do a Lvl2 or Lvl3 trick:

• TB+Left=Flip B->TB+Up=Spin->TB+TB=SpinFlip B->TB+Down=Total Rotation->TB+TB=TotalRotation-Flip B= RollSpin (Lvl2)
• TB+Left=Flip B->TB+Up=Spin->TB+TB=SpinFlip B->TB+Down=Total Rotation->TB+UP=TotalRotation-Flip B+Spin=DoubleSpinRoll (Lvl3)->TB+TB=DoubleSpinRoll-Spin=SpinRoll(Lvl2)->TB+TB=SpinRoll-Roll = DoubleSpin(Lvl2, we add another spin to create a level 2 trick).

 In this case the difference between Lvl2 and Lvl3 tricks must be very big because Lvl3 tricks become accessible at the same time as Lvl2 tricks.
Level 1 tricks can also be executed:

• TB+Left=Flip B->TB+Up=Spin->TB=SpinFlip B->TB+Down=Total Rotation->TB+TB=TotalRotation-Flip B-Spin=Roll (Lvl1)

From there the whole chain can start again.
A safety timer must be set after the first TB so it doesn´t execute a Lvl2 trick instead.

Option3 has easy inputs, allows multiple combinations, has flexibility but at the same time requires a bit of planning to reach the desired Lvl3 trick.

Implementation
List<int> tricks = new List<int>();
List<int> inputs = new List<int>();
const int inpRight=0, inpUp=1, inpLeft=2, inpDown=3, inpTrick=4;

if (trickEnable){
 if (rightJustPressed){
  inputs.Add(inpRight);
  trickEnable = false;
 }else if (upJustPressed){
  inputs.Add(inpUp);
  tricEnable = false;
}else...

}