Add gravity & collision detection to any instance easilly!

[YoshiInAVoid]

I was bored today so I started work on The gravity template.

All of the previous gravity examples had loads of lines of code for each object that you wanted to apply gravity to, so if you had more than 10, your game would take ages to compile and save and stuff, so I thought: "Wouldn't it be good if you could add gravity to any instance you wanted with one line in the object?"

And here it is!

GravityTemplate.dsgm

(7.09 KiB) Downloaded 270 times

(This also includes the code writen below and a sample background... Everything you need to compile it into the nds at the bottom of this post.)

I put all of the complex stuff in scripts, so the only code I had to use in the object was:

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Run Script,Fall;[Me],this


And it adds gravity and collision detection to your object without cluttering up the whole object code.

Then I added this for jumping:

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If,Pad.Newpress.A && Touching_Floor([Me]),this
Start Block,,this
Run Script,Set_Velocity;[Me]<com> -1700,this
End Block,,this

And this for moving left and right:

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Set Variable,[X];[X] + ((Pad.Held.Right && [X] < 224) - (Pad.Held.Left && [X] > 0)),this

And then put a background on the same screen as the object.

Which is all you need if you have the gravity template in your project to build something like this!

GravityTemplate.nds

(335.06 KiB) Downloaded 112 times

The collision detection isn't the best, but I'll update it so it looks better later. Until then though, what do you think?

[Bobbyloujo]

This will only work if the sprite is 32x32 pixels. You should use [Width] and [Height] to make it work no matter the sprite size.

[Sonic The Hedgehog]

This will only work if the sprite is 32x32 pixels. You should use [Width] and [Height] to make it work no matter the sprite size.

Yeh that would be cool

but I think you should add double jumping

and it would be cool if you could add that you can jump through the white lighn

[Sonic The Hedgehog]

So no update 

[YoshiInAVoid]

Nope. It was ment as a small example of what scripts can achive.

You can add in your own collision detection code ensted of my crappy one I wrote in a few minutes.

[bart2465]

can somebody fix it for 16x16 sprites?

that would be very nice

[YoshiInAVoid]

Rewrite the collision detection code to have 16 rather than 32. I would also just recommend you to to rewrite the whole thing since it's very old and glitchy.