Bouncing Ball Bug

[Teh_Purple_d00d]

Anyone else having trouble keeping objects using the bouncing ball movement from sticking to certain objects? I'm currently working on a Breakout style game and have added the various bricks you can smack the ball into. Most bricks are destroyed with a single hit (with the exception of the silver one, which takes two hits.) But the problem I'm having is when the ball collides with the side of the gold brick. Most of the time it works, but the rest of the time, it just sticks in place.



I've fiddled with the settings of the bouncing ball itself. Turned off fine detection under collision settings. Etc. Etc. But nothing seems to help. I've included the source code for reference.

Arrows move you left and right.
D toggles Debug information.

Block Breaker (WIP)

[Jeff]

Looks like your using Pinball movement for the ball?

That movement is a little flakey -- Perhaps just regular bouncing ball movement would work better?

I can't get it to stick here but I am using a pre-release of build 252 so maybe that fixed it.

[Teh_Purple_d00d]

The ball itself uses Bouncing Ball, not Pinball (That's used for the shattered brick effect.) I'd be open to using something else besides the Bouncing Ball movement, though. Are there any examples that have their own custom movements?

[willy]

You could keep the movement setup you got now, but add a code that pushes the ball +1 on the Y axis. It would look like this:

Ball is colliding with brick:
* Bounce

Ball is overlapping brick:
* Set Y coordinate +1 related to ball.

[Teh_Purple_d00d]

In theory, that WOULD work. However, if you look at the screenshot, the ball itself isn't exactly overlapping the brick itself. Here's another shot I took while testing out a couple more gold bricks.



According to the debug stats, the Ball Speed (BALSPD) is still on 35 rather than 0, as if the ball hadn't stopped. Also, Ball Movement (BLMOVE) says the ball is still in motion (1 = Moving, 0 = Not Moving).

Honestly, I'm thinking that I may get better results from the Vector movement instead of the Bouncing Ball. I would just need to figure out how to properly bounce the ball off walls and bricks using Advanced Directional Calculator or something. Anyone have any thoughts?

EDIT: After some more testing, I found a way to trigger the glitch 100% of the time. The ball sticks to the gold brick after the first strike. However, an odd tidbit I noticed, is when you maximize or shrink the game window while the ball is stuck, the ball dislodges and moves like nothing was wrong. Very strange, and it's making me point the finger at the Bouncing Ball extension itself.

[Teh_Purple_d00d]

Alright, I tried the Vector Movement using the Clickteam Movement Controller and it seems to solve MOST of my problems. However, I'm trying to find a decent way to make the ball bounce off the blocks accurately depending on which side is struck hopefully without using collision detectors for each brick (Lotta active objects if that's the case..). Sometimes, the ball bounces off like normal. Other times, the angle changes and the ball goes THROUGH the brick.

EDIT: I'm such a dunce. I didn't even think about detectors for the ball itself. Jeez..

[Teh_Purple_d00d]

Oi.. This is going to be a persistant little problem isn't it?

I tried the vector movement using the Force Bounce function of the Clickteam Movement Controller. The problem I'm having is thus.

(NOTE: I've tried this with and without collision detectors for the ball. I'd really like to avoid using them on the ball or the bricks if at all possible.)

- Ball leaves the play field at top or bottom
+ Force Bounce at Angle 0 (Clickteam Movement Controller)

- Ball leaves the play field at left or right
+ Force Bounce at Angle 90 (Clickteam Movement Controller)

These two events? They work flawlessly regardless what angle the ball strikes them at.

- (Ball) collides with (Bricks)
+ Force Bounce at Angle 0 (Clickteam Movement Controller)

HERE is where I'm having trouble. I know I'll need at least two events depending on which side the ball strikes the brick. Is it possible to make this work without collision detectors? Using the above event, the ball bounces off the top and bottom of the bricks with no issue. However, when striking the brick from the SIDE causes them to either bounce off at a strange angle, or pass through the brick entirely. Any help would be greatly appreciated.

I've included an example file for reference.
Broken Vector Test

[LB]

You can build the detectors into the ball animation, and each event loop change the animation to the detectors to check various side for collisions, then change it back to the ball animation before the end of the event loop. You will always see the ball on screen, and the detectors will be part of the ball and used in the collision checking events.

[Teh_Purple_d00d]

Care to elaborate how to do this? I haven't attempted it.

[LB]

Step 1:

build the detectors into the ball animation

Step 2:

each event loop change the animation to the detectors

Step 3:

check various side for collisions

Step 4:

change it back to the ball animation

Step 0:
http://www.LB-Stuff.com/MMF2/Bouncing.mfa

Though it may be better to use the built-in bounce feature, although I have not tested it.