GML Jumping and Falling (Gravity)

[Shawnowstin]

So im fairly new to game maker and starting to learn some code. I thought using room gravity would help me but nope, and i because idk how to use gravity i now need help with jumping too... heres my current code:

 

[Shawnowstin]

In my room the ground is tile sets and the yellowish sprite is going to be an invisible wall.

 

[Matt Hawkins]

When moving physics objects it is best to use the " physics_apply_force(xpos, ypos, xforce, yforce) or physics_apply_impulse(xpos, ypos, ximpulse, yimpulse) ".
You can move left and right and jump with these.
If you use phy_position_x to move your object the physics wont work properly.