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[noseblunt3]

noseblunt3

plateform game movements theory

I started messing around with a plateform game in GM7, but I have trouble figuring out how to make the player "follow" the level.
How do you make him go up and down the hills?

I had no problems doing this with a "square" layout, because the sloppes are constants:

but I don't really know how to do it with a "curvy" layout. I don't want working code, just theories on how to make this.

Rome wasn't built in a day, but they didn't waste time by sitting around doing nothing either!

[Windy]

Windy

Re: plateform game movements theory

I presume you would use this.
http://en.wikipedia.org/wiki/Separating_axis_theorem

[Darth RPG]

Darth RPG

Re: plateform game movements theory

You can use a loop something like this:

Code: [Select]

var i;
for (i = 0; i <= max_height_you_can_climb; i += 1)
{
  if (place_free(x+your_speed, y+i))
  {
    x += your_speed;
    y += i;
  }
}

Darth RPG - Feel Dark Side temptation

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[Infinitus]

Infinitus

Re: plateform game movements theory

I presume you would use this.
http://en.wikipedia.org/wiki/Separating_axis_theorem

SAT is really meant for using with prefab geometry shapes, cubes, lines, circles, .etc. Its not very usefull when you have abstract shapes like in that picture.

Anyway, look at Darth RPG's example, tracking the ground height on the side the character is moving in and then adjusting accordingly is proberly best.

[noseblunt3]

noseblunt3

Re: plateform game movements theory

Thanks for the ideas, it's working perfectly.

Rome wasn't built in a day, but they didn't waste time by sitting around doing nothing either!