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That wouldn't work, since Sonic wouldn't be pushed to the left if he's not moving. Also makes for some wonky controls, as you could make Sonic jump backwards, although he appears to be running to the right at high speed.

Only problem is that Game Maker doesn't directly work with conditions. He'd need to use "if" for everything in that manner. (Other kewl ways too, advanced though) Create the border and make it follow the view. If Sonic hits the right border, set his speed to something slower than the view is moving. If he hits the left border, set his speed to something faster than the view. He will sorta bounce off the edges, but won't be able to leave it. You can tune it to make it almost not notable. Alias, if the view moves at a speed of 4, make Sonic run at 3.5 when he hits the edge. It will be a minor bounce, and Sonic will stay in the view.

I'd personally make a border the size of the view and prevent Sonic from leaving it. When the boss is defeated, remove the border so he can move freely again.

Refering to the Simon Wai prototype, you could make the partner clone the movement for a start. Then add the function of "finding" the player if the partner gets too far away. This is all beyond me though, since I would have no idea how to do that.

This might not be a suffecient way, but it's the only thing I can come up with. I would make a clone of the player object, but add a short delay to all the actions like jumping, ducking and such. I'm guessing this would take a lot of resources though.

You can't just ask "what's wrong" because countless things could be wrong. So first things first: What's the error message it gives you?

Well, that's like the only thing I didn't check. Thanks!

So, is this the place to post bugs? I experienced this in 1.3, and it's still there in 1.3.2 For some reason, I collide with an invisible wall right here, as illustrated in the picture. I found the spot in the level editor, but there's nothing there at all.