The easiest way to jump is by entering this code in the correct places. You could set the gravity but this way is easier. This will work in both the pro and lite
put this code in you Create event of you player
falling=false; //Variable for Falling
hitting=false; //Variable for if you are hitting something
grav=7; //Gravity
movement=6; //Speed at which you move
jump=0; //Used for jumping
jumping=false; //If you are jumping or not
space=false; //if space is pressed
doublejumping=false //if doublejumping
doublej=0; //for doublejumping
put this code in you step event of you player
//FALLING:
if(!collision_point(x,y,ground,true,false) && !jumping && !doublejumping) //not touching ground, or jumping{
y+=grav; //Move down the number gravity
grav=7; //Keeps gravity set
falling=true; //says the player is falling
}
if(keyboard_check_pressed(vk_space)){ //if keypressed SPACE
space=true //space=true. For other purposes
}
if(keyboard_check_released(vk_space)){ //if space not pressed
space=false //space is false
}
if(space=true && jumping==false) //if space is pressed, and jumping is false{
jumping=true; //jumps
space=false //space no longer pressed
}
if(space=true && jumping==true && doublejumping=false) //if space pressed, player jumping, and not doublejumping {
doublejumping=true //doublejumps
jumping=false //no more jumping
}
if(jumping) //if jumping is true{
y-=jump; //go up jump
jump-=.5; //lower jump a little
if(jump<0) && doublejumping=false //if jump is nil and not doublejumping {
falling=true; //fall
}
if(jump<-10) { //if jump is below -10, set it to 10
jump=-10;
}
}
if(doublejumping) //if doublejumping{
y-=doublej; //go up doublej
doublej-=.5; //lower doublej a little
if(doublej<0) { //is doublej is nil, fall
falling=true;
}
if(doublej<-10) { //if doublej is below -10, set it to -10
doublej=-10;
}
}
if(collision_point(x,y,ground,true,false) && falling) { //if touching ground and falling
jump=10; //jump is 10, for next jump
jumping=false; //No longer jumping
falling=false; //no longer falling
doublejumping=false //no longer doublejumping
}
if(keyboard_check(vk_left)) { //MOVEMENT. if left key is pressed
x-=movement; //move left
}
if(keyboard_check(vk_right)) { //if right pressed
x+=movement; //move right
}
if falling=false && jumping=true { //if falling is false, and jumping is true
{
doublej=10; //doublej is 10
}
}
Done. if you r having trouble download the example
http://www.willhostforfood.com/users/warsome/doublejumpgrav.gmk
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