Okay, I've been working on a basic outline for a platformer I'm planning to make called "Go!" and I'm constantly running into the same problem while working on slope code: how the heck do you get the character to run smoothly on a slope larger than 90 degrees?!
Right now, I'm using an atan2 function to rotate the character, so if anyone has any ideas or knows how Brad did it so well in FPA, that'd be awesome.
Sure, here's the link...
It looks like you're basing the dot's positioning on being a certain _x value away from the character on each side. If you're on a steep slope, they're farther away from the character than if they're on a flat surface.
The feel of the game is great, but if you want to get him running upside, you'll need to base the position of those dots on the distance from the character, as well as the character's rotation. If you're basing the character's movement on his rotation, then you should already have the math to do that.
So basically, instead of moving the points up or down based on if they're hitting or not, then rotating the character, you should rotate the character based on if the points are hitting or not. Just make sure to reposition your points based on his rotation within that while loop, else it'll just keep running.
You want the dots to be the same distance apart always, not the same x value apart. So, If I understood what Brad said right...
Basically you solve for x and y so that dist is always the same. You have rotation of the character and how far apart the points are, so with trig you should be able to find x and y of the points dist*sin(angle) dist*cos(angle).
I'll be totally honest - this is getting me so frustrated, I'd gladly give you whatever piece of code you need. All I need is a push, something to get me started, but so far none of this is making any sense to me.
Tell me what you need to know, or, if it's easier, just give me something of yours that I might understand. Sorry if I'm asking too much, by the way.
Well, why dont you put up a download link so we can see the code?
dot1._x = char._x + dotdistance *Math.cos (radrot)
dot1._y = char._y + dotdistance *Math.sin (radrot)
dot2._x = char._x + dotdistance *Math.cos (radrot*3.1415)
dot2._y = char._y + dotdistance *Math.sin (radrot*3.1415)
radrot being your character rotation in radians (char._rotation/52)
also, when you reposition those dots according to the ground they should do so according to the character relative y axis. So instead of just saying y-- in your while loop it should look something like this
dot._y += Math.sin (radot+90)
dot._x += Math.cos (radot+90)
or if your a big math nerd like me, you can solve that to:
dot._y -= Math.cos (radot)
dot._x += Math.sin (radot)
*note* Some of the additions for _y may be subtractions instead (the reversed y axis still gets me)
like a .fla file, yeah.
OK, here's the .fla file...
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