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AppGameKit Classic Chat / [SOLVED] Sprite Gravity

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george++
AGK Tool Maker
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Joined: 13th May 2007
Location: Hellas
Posted: 29th Jun 2020 22:25 Edited at: 29th Jun 2020 22:32
Hi.
How to set a physics sprite which won't be influenced by the gravity?
It seems that setting the mass to 0.0 has no effect

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fubarpk
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Posted: 30th Jun 2020 00:08
This post has been marked by the post author as the answer.
I don't believe there is a way apart from SetPhysicsGravity( 0,0 ) which effects all the physics sprites

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Scraggle
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Posted: 30th Jun 2020 00:29 Edited at: 30th Jun 2020 00:45
Apply a force equal to gravity but in the opposite direction.
Or SetSpritePhysicsOn(sprNo, 3)
george++
AGK Tool Maker
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Joined: 13th May 2007
Location: Hellas
Posted: 30th Jun 2020 16:00 Edited at: 2nd Jul 2020 10:06
Thank you both. Your answers are totally different, and to the right direction, to what I found through the web search.

I work on a platform project and I need to create bullets, that will collide with static and dynamic bodies.
Quote: "Apply a force equal to gravity but in the opposite direction."


This is my gravity setup

Do you know how to calculate the opposite force in order to reverse the gravity? Will it apply in every physics step?. I use
and I don't know if it matters

Quote: "Or SetSpritePhysicsOn(sprNo, 3)"

Then the bullet will not collide with static objects

Quote: "I don't believe there is a way apart from SetPhysicsGravity( 0,0 ) which effects all the physics sprites"

I think I'll go with this solution and I'll simulate gravity to specific objects. Still don't know how to apply a force for this simulation. I mean do I have to apply a force in every physics step or what?
george++
AGK Tool Maker
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Years of Service
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Joined: 13th May 2007
Location: Hellas
Posted: 30th Jun 2020 16:56 Edited at: 2nd Jul 2020 10:04
It was simple.
I followed Scraggles advice and I simply used the SetSpritePhysicsForce function within the main loop

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