Jumping?
Blitz3D Forums/Blitz3D Beginners Area/Jumping?
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| It's been awhile since my last post, which is a good thing:), but I have a question. Does anyone know how I can add smooth jumping into the code below please reply,thanks |
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| look at this, but replace "camera" with "player": http://www.blitzbasic.com/Community/posts.php?topic=90543#1029574 |
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| Copied from my tutorial entry... Hey I have seen many people ask how to make things fall like they do in real life. I can only assume they are tired of making things fall at a few pixels per second. Well here is a nifty trick that I discovered when I made my first platformer game and soon figured out I wasnt the only one that knew this. So here is how you do it step by step. 1. When you make a character or anything that will be affected by gravity give it a variable called velocity_y or vy.. whatever you want to call it Main loop 2. If the object hit the ground then velocity_y = 0 3. Add velocity_y to the y value. 4. velocity_y = velocity_y + gravity where gravity is a constant usually floating point variable. gravity should be positive in 2d and negative in 3d End of Main loop This works for 2d and 3d! to make an object jump set velocity_y to some bigish number in 3d it is positive, in 2d it is negative. simple example: Graphics 800,600,0,2 SetBuffer BackBuffer() ballx# = 200 bally# = 200 ball_velocity_y# = 0 gravity# = .1 bounce# = .5 While Not KeyDown(1) Cls ball_velocity_y# = ball_velocity_y# + gravity bally = bally + ball_velocity_y If bally# > 590 Then ball_velocity_y = -ball_velocity_y*bounce bally = 590 EndIf Oval ballx,bally,10,10 Flip Wend End this one even has bounce. set bounce to 0 to see it just stop like a normal character would. |
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| well, I don't want to sound like a lazy copy and paste coder, but can someone show me and example? As far as I've tried, I have created a constant named GRAVITY# and I set the variable to -.5, then in the games main loop, I translated the main character's y velocity with the gravity constant. That is all that I have for the jumping, so if someone knows a code for smooth jumping and falling, can you maybe show me the code and explain the steps so I can understand it better? |
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| I posted code, I just typed the codebox thing wrong... fixed |
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| Nate the Great your code example is good and really realistic, but it's more of physics for basketballs rather than a person or character. I'm trying to figure out how to make my character jump like in a platform/action adventure game(Ratchet and Clank, psychonauts). thanks for trying to help anyways |
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| I found an example on how to do smooth jumping. I implemented the smooth jumping code into mine and I was able to make my character jump by pressing space:) but theres a problem. The camera keeps on slowely turning downwards. Why does it do this? Here's my code with the smoothly implemented jumping what's the problem? please reply, thanks |
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| your code example is good and really realistic, but it's more of physics for basketballs rather than a person or character. I'm trying to figure out how to make my character jump like in a platform/action adventure game(Ratchet and Clank, psychonauts). thanks for trying to help anyways im not trying to argue but set the bounce to 0 and its perfect for characters. and your example uses the exact same principle except it sets the velocity to zero when it hits the ground... ;) |
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| Nate The Great So your saying that the problem with my code is that I set the velocity to zero instead of the gravity? The code that I used would be perfect for the jumping but like I said before, when I put the code in, the camera just kept on slowely tilting downwards. The speed that the camera tilts downwards has to do with the level of the gravity. I set the gravity to .01 and the camera very slowely tilted downwards, but when I set the gravity to .1, the camera tilted down quickley. Why does it do this?!!!?!?! |
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| no, I was saying you were doint the exact same thing as me, but instead of a bounce variable you have it set to zero which as I said is perfect for characters. Sorry I dont know what is wrong with your camera. :/ |
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| The problem with the camera from my experience (I've only read what you said, not looked at any code of yours) is that if you're pointing the camera at the player, point the camera at the player before the gravity is applied or after the player is settled into the ground or else the camera will think the player is in a different place. |
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