jump = 0;

if place_free(x,y+2){//This is for gravity
gravity = 0.5;
}
else {gravity = 0}
if vspeed >12{vspeed = 12};
if player.x > x+5{//If the player is more than 5 pixels ahead of the enemy, he will follow you.
hspeed = 4;
}
if player.x < x-5{//If the player is more than 5 pixels behind the enemy, he will follow you.
hspeed = -4;
}
if player.y<y-7{//If the player is 7 pixels in the air, the enemy will jump.
jump = 1;
}
if jump = 1 and place_meeting(x,y+1,obj_solid){//If the variable jump is equal to 1 and the enemy
jump -= 1;//is on the ground, the enemy will jump.
vspeed = -9;
}