hey everyone,
i´m kind of a noob in programming, because my teacher hasnt taught me anything so i dont know how to make a charater jump.
Benedict wrote ...
2012/5/25
how to jump
Create a gravity instance variable:
Put this in act:
You see there is a checkForJump() method.
This is what the code will looklike, if you must jump if you see an object of the class Trampoline:
I hope this helps. If you don't understand something, just ask me.
private int gravity;
public void act()
{
gravity--;
setLocation(getX(), getY() - gravity);
checkForJump();
}private void checkForJump()
{
Actor a = getOneIntersectingObject(Trampoline.class);
if (a != null) {
gravity = 20; // this will make the character jump
}
}
@Jinice, Instead of lines 3 and 4 in the trampoline code above, use:
The boolean field 'onGround' should be declared as an instance variable in your character class, initially set to 'true'.
Change to value to 'false' in the code block for the 'if' statement. When a 'landing' is detected, change it back to 'true'. Things to be aware of: detecting the landing could be a bit tricky; if your character is falling fast and the object to land on is not very thick (height-wise), the character could just pass it up or get stuck inside of it. What I prefer to do, is break each step of the fall into individual pixel-sized sub-steps using a 'for' loop and 'break'ing from it if a landing is detected (after resetting 'onGround' to 'true').
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