It is very simple. You can press any key to perform a square jump, which can be a two-step hop or a light or heavy hop. It can be determined based on the length of the button. This is a question made at the Brotherhood forum. I should share it with you later ~
The code is as follows:
Package {
/* Author: CYPL */
Import flash. display .*;
Import flash. events .*;
Import flash. utils. Timer;
Public class JumpTest extends Sprite {
Private static const G: int = 1;
Private var box: Sprite;
Private var landObject: Sprite;
Private var ySpeed: int = 0;
Private var jumpSpeed: int =-15;
Private var keyPressed: Boolean = false;
Private var keyReleased: Boolean = true;
Private var comboJump: Boolean = false;
Private var inAir: Boolean = true;
Private var timer: Timer;
Public function JumpTest (){
Box = drawRect (stage. StageWidth-50)/2,100, 50, 0xff0000 );
LandObject = drawRect (0,300, stage. stageWidth, 20 );
(Timer = new Timer (30). start ();
ConfigureControl ();
}
Private function configureControl (): void {
Stage. addEventListener (KeyboardEvent. KEY_DOWN, keyDownHandler, false, 0, true );
Stage. addEventListener (KeyboardEvent. KEY_UP, keyUpHandler, false, 0, true );
Timer. addEventListener (TimerEvent. TIMER, timerHandler, false, 0, true );
}
Private function drawRect (posX: Number, posY: Number, w: Number, h: Number, color: uint = 0): Sprite {
Var rect: Sprite;
With (rect = new Sprite ){
Graphics. beginFill (color );
Graphics. drawRect (0, 0, w, h );
X = posX;
Y = posY;
}
Return Sprite (addChild (rect ));
}
Private function keyDownHandler (evt: KeyboardEvent): void {
KeyReleased & inAir &&! ComboJump & (comboJump = true, ySpeed = jumpSpeed, trace ("comboJump "));
! KeyPressed & (keyPressed = true, inAir = true, ySpeed = jumpSpeed, timer. start ());
KeyReleased = false;
}
Private function keyUpHandler (evt: KeyboardEvent): void {
KeyReleased = true;
YSpeed <-5 & (ySpeed + = 8) & ySpeed> 0 & ySpeed = 0;
}
Private function timerHandler (evt: TimerEvent): void {
Evt. updateAfterEvent ();
YSpeed + = G;
Box. y + = ySpeed;
YSpeed> 0 & (box. hitTestObject (landObject) & (trace (landObject. y), box. y = landObject. y-box.height, timer. stop (), keyPressed = false, inAir = false, comboJump = false );
}
}
}
// Document class, set in fla to see the effect!
