Code archives/Miscellaneous/Basic & Charged Jumping in 3D
This code has been declared by its author to be Public Domain code.
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| |||||
| Ive read many topics on jumping this past couple years. Most of them had the same problem. When you press and hold the [JUMP] key, the character bounces like a jack rabbit. Well from help from the Blitz Community, and lots of tinkering, trial and error. I think I may have a solution. The object of jumping is to press the [JUMP] button for a single jump. Not multiple ones. --------------------------------------- ;if jumping is labeled as false check for collisions. If none you are still in the air, therefore, still jumping If jump=False If CountCollisions(player1)=0 jump=True velud=0 End If ;make sure your assending/desending is decreased constantly. Think of it as gravity velud=velud-1 ;check for collisions. If a collision is found vertically, you are no longer jumping. (Turn Jumping off) For checkallCollisions=1 To CountCollisions(player1) If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey jump=False velud=0-1 Exit ElseIf CollisionNY(player1,checkallcollisions)<0;-0.03125*sizey jump=True velud=0-1 Exit End If Next ;here's where things change. Instead of keydown. use keyhit and then do the vertical check again. without the vertical check, you may not jump when ou want to. If KeyHit(mjp) For checkallCollisions=1 To CountCollisions(player1) If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey jump=False velud=0-1 Exit End If Next ;if jumping is false set to true and set a velocity number. You should then be all set. If jump=False velud=8;8,11,14,16,18 (1-5 blocks respectfully) jump=True End If End If --------------------------------------- I hope this helps. Like i said, this is basic jumping without the jack-rabbit jumping when the jump button is pressed. Here is the charged jumping. -------------------------------------- ;while the charcter is falling check for collisions vertically. If you land on something reduce pull to -1, if you hit your head. do the same thing. It will stop the acceleration and start the deceleration. velud=veluD-1 For checkallCollisions=1 To CountCollisions(player1) If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey velud=-1 Exit ElseIf CollisionNY(player1,checkallcollisions)<0;-0.03125*sizey velud=-1 Exit End If Next ;if you press the [JUMP] button, do a single jump. (just like the other jump routine). If KeyHit(mjp) For checkallCollisions=1 To CountCollisions(player1) If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey velud=8 Exit End If Next End If ;if you charge the jump. increase the power of the jump when the [JUMP] button is released. Oh yeah, check for vertical collisions along the way. If KeyDown(mjp)=True tmpvud=tmpvud+1 If tmpvud>18 tmpvud=18 ElseIf KeyDown(mjp)=False For checkallCollisions=1 To CountCollisions(player1) If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey velud=tmpvud Exit End If Next tmpvud=-1 End If ---------------------------------------- Well that's it. There is now traditional jumping, and charged jumping. I didn't do the extended jumping like mario where you hold down the [jump] button to go higher. I didn't think it was needed after doing the chargedjumping routine. But I'm sure someone can figure it out now with jumping finally figured out completely. Traditional Jumping - Tap [JUMP] to jump: Based on any game with jumping. Charged Jumping - Tap [Jump] to jump, Hold & release [Jump] to charge jump: Based on Spider-Man 2 (PlayStation2) jumping. Mario Jumping - Not done, didn't think it's needed after the charged jumping. But it should be easy to figure out now with the other 2 Jump Routines as a starting point. | |||||
Global mup=200,MDN=208,mlt=203,mrt=205,mjp=57,mst=28
;input user keys here before the program starts
Color 255,255,255
For x=0 To 6
Cls
Text 10, 0," Up:"
Text 10,12," Down:"
Text 10,24," Left:"
Text 10,36,"Right:"
Text 10,48," Jump:"
Text 10,60,"Shoot:"
If X<6 Text 10,84,"[ESC] Use Defaults"
If x<6 Rect 58,x*12,8,12
If x>0 Text 58,0,mup
If x>1 Text 58,12,mdn
If x>2 Text 58,24,mlt
If x>3 Text 58,36,mrt
If x>4 Text 58,48,mjp
If x>5 Text 58,60,mst
If x=6 Text 10,84,"Press any key to continue..."
.redo
confirm=False
FlushKeys
Repeat
For keyz=0 To 255
If KeyHit(keyz)
If x=0 mup=keyz
If x=1 mdn=keyz
If x=2 mlt=keyz
If x=3 mrt=keyz
If x=4 mjp=keyz
If x=5 mst=keyz
confirm=True
End If
Next
Until confirm=True
If X<6
If MUP=1 Or MDN=1 Or MLT=1 Or MRT=1 Or MJP=1 Or MST=1
mup=200
MDN=208
mlt=203
mrt=205
mjp=57
mst=28
x=5
End If
End If
If x=0
If mup=15 Goto redo
ElseIf x=1
If mdn= 15 Goto redo
If mdn=mup Goto redo
ElseIf x=2
If mlt= 15 Goto redo
If mlt=mup Goto redo
If mlt=mdn Goto redo
ElseIf x=3
If mRt= 15 Goto redo
If mRT=mup Goto redo
If mRT=mdn Goto redo
If mRT=mLT Goto redo
ElseIf x=4
If mJP= 15 Goto redo
If mJP=mup Goto redo
If mJP=mdn Goto redo
If mJP=mLT Goto redo
If mJP=mRT Goto redo
ElseIf x=5
If mST= 15 Goto redo
If mST=mup Goto redo
If mST=mdn Goto redo
If mST=mLT Goto redo
If mST=mRT Goto redo
If mST=mJP Goto redo
End If
Next
;ADDED DATA---------------------------------------
RESTOREBMP ;CREATE CHARACTGER AND BULLET AND BEAM
;-------------------------------------------------
Const PERIOD=32 ;(1024/PERIOD) = FPS (FRAMES PER SECOND)
;SET GRAPHICS MODE AND LOAD STUFF HERE.
Graphics3D 640,480,16,3
Global TIME=MilliSecs()-PERIOD,ELAPSED,FRAMETICKS,TWEEN#
;TIME = CALCULATE TIME PERIOD
;ELLAPSE = TIME ELLAPSED (TIME PASSED) This changes throughout the program
;FRAMETICKS = How many frames have ellapsed (passe)
;TWEEN# = used to get inbetween frames
;ADDED DATA--------------------------------------------------------------------
Const CLSN_PLYR=1,CLSN_OBJS=2,CLSN_GRND=3
Collisions CLSN_PLYR,CLSN_OBJS,2,2
Collisions CLSN_PLYR,CLSN_GRND,2,2
AmbientLight 84,168,252
PLANE1TEX=CreateTexture(32,32)
SetBuffer TextureBuffer(PLANE1TEX)
Color 84,84,252
Rect 0,0,32,32
For ALLLINES=0 To 2
Color 42-(ALLLINES Mod 2)*42,42-(ALLLINES Mod 2)*42,210-(ALLLINES Mod 2)*42
Line ALLLINES,1,ALLLINES+29,30
Line ALLLINES,30,ALLLINES+29,1
Next
Color 0,0,0
For ALLSQUARES=0 To 3
Rect ALLSQUARES/2*16,16*(ALLSQUARES Mod 2),16,16,0
Next
Color 0,0,168
Line 0,0,31,31
Line 0,31,31,0
PLANE2TEX=CreateTexture(32,32)
SetBuffer TextureBuffer(PLANE2TEX)
Color 252,84,84
Rect 0,0,32,32
For ALLLINES=0 To 2
Color 210-(ALLLINES Mod 2)*42,42-(ALLLINES Mod 2)*42,42-(ALLLINES Mod 2)*42
Line ALLLINES,1,ALLLINES+29,30
Line ALLLINES,30,ALLLINES+29,1
Next
Color 0,0,0
For ALLSQUARES=0 To 3
Rect ALLSQUARES/2*16,16*(ALLSQUARES Mod 2),16,16,0
Next
Color 168,0,0
Line 0,0,31,31
Line 0,31,31,0
;------------------------------------------------------------------------------
SetBuffer BackBuffer() ;Double buffering
;ADDED DATA--------------------------------------------------------------------
;cubes
cube=CreateCube()
EntityColor cube,1,1,255
ScaleEntity cube,.5,.5,.5
PositionEntity cube,-5,1.5,0
EntityType cube,clsn_objs
cube=CreateCube()
EntityColor cube,255,1,1
ScaleEntity cube,.25*2,.25*2,.25*2
PositionEntity cube,0,.25*2,0
EntityType cube,clsn_objs
cube=CreateCube()
EntityColor cube,1,255,1
ScaleEntity cube,.25*6,.25*12,.25*6
PositionEntity cube,5,.25*12,0
EntityType cube,clsn_objs
;light
btllight=CreateLight(2)
PositionEntity btllight,0,10,0
;charsize x,y
sizex=16*1
sizey=16*1
plyrdir=0 ;player direction
WALKSPEED=2 ;PLAYER'S WALKING SPEED
player1=CreateSprite()
plyr1tex=LoadAnimTexture("char1.bmp",7,32,32,0,2)
EntityTexture player1,plyr1tex,0
SpriteViewMode player1,2
PositionEntity player1,0,5,0
ScaleSprite player1,0.03125*sizex,0.03125*sizey
EntityRadius player1,0.0078125*sizex,0.015625*sizey
EntityType player1,clsn_plyr
;delete when done----------
sphere=CreateSphere(32,player1)
EntityAlpha sphere,.5
ScaleEntity sphere,0.0078125*sizex,0.015625*sizey,0.0078125*sizex
PositionEntity sphere,0,0,0
;--------------------------
;player camera
camera=CreateCamera(player1)
CameraViewport camera,0,0,GraphicsWidth(),GraphicsHeight()
CameraProjMode camera,2
PositionEntity camera,0,10,-10
RotateEntity camera,45,0,0
CameraZoom camera,.5
;fixed camera
smlcam=CreateCamera()
CameraViewport smlcam,GraphicsWidth()*7/8,GraphicsHeight()*7/8,GraphicsWidth()/8,GraphicsHeight()/8
CameraProjMode smlcam,2
PositionEntity smlcam,3,10,-10
RotateEntity smlcam,45,0,0
CameraZoom smlcam,.5
;battlefield
btlcube=CreateCube()
ScaleEntity btlcube,12,Float(1)/256,4
ScaleTexture plane1tex,Float(1)/24,Float(1)/8
EntityTexture btlcube,plane1tex
PositionEntity btlcube,0,0,0
EntityType btlcube,clsn_grnd
;exitfield
exitcube=CreateCube()
ScaleEntity exitcube,12+8,Float(1)/256,4+8
ScaleTexture plane2tex,Float(1)/40,Float(1)/24
EntityTexture exitcube,plane2tex
PositionEntity EXITcube,0,-Float(1)/256,0
EntityType EXITcube,clsn_grnd
FLUSH ; FLUSH INPUTS
;------------------------------------------------------------------------------
;BEGINNING OF PROGRAM
Repeat
;WAIT FOR ELLAPSED TIME
Repeat
ELAPSED=MilliSecs()-TIME
Until ELAPSED
FRAMETICKS=ELAPSED/PERIOD ;how many 'frames' have elapsed
Tween#=Float(elapsed Mod period)/Float(period) ;fractional remainder
;check each frame
For checkticks=1 To frameticks
time=time+period ;goto next time period
If checkticks=frameticks Then CaptureWorld ; capture each frame in 3d world within time period
;place images/entties and inputs here--------------------------------------------
;ADDED DATA----------------------------------
If jroutine=1;new jump routine stumped
;----------------------------original charge jump code
; velud=veluD-1
; If CountCollisions(player1)>0 velud=-1
; If KeyHit(mjp)
; If CountCollisions(player1)>0 velud=8;8,11,14,16,18 (1-5 blocks respectfully)
; End If
; If KeyDown(mjp)=True
; tmpvud=tmpvud+1
; If tmpvud>18 tmpvud=18
; ElseIf KeyDown(mjp)=False
; If CountCollisions(player1)>0 velud=tmpvud
; tmpvud=-1
; End If
;------------------------------------------------------
velud=veluD-1
For checkallCollisions=1 To CountCollisions(player1)
If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey
velud=-1
Exit
ElseIf CollisionNY(player1,checkallcollisions)<0;-0.03125*sizey
velud=-1
Exit
End If
Next
If KeyHit(mjp)
For checkallCollisions=1 To CountCollisions(player1)
If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey
velud=8
Exit
End If
Next
End If
If KeyDown(mjp)=True
tmpvud=tmpvud+1
If tmpvud>18 tmpvud=18
ElseIf KeyDown(mjp)=False
For checkallCollisions=1 To CountCollisions(player1)
If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey
velud=tmpvud
Exit
End If
Next
tmpvud=-1
End If
ElseIf jroutine=0;jump routine with help from blitz forum community
If jump=False
If CountCollisions(player1)=0 jump=True
velud=0
End If
velud=velud-1
For checkallCollisions=1 To CountCollisions(player1)
If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey
jump=False
velud=-1
Exit
ElseIf CollisionNY(player1,checkallcollisions)<0;-0.03125*sizey
jump=True
velud=-1
Exit
End If
Next
If KeyHit(mjp)
For checkallCollisions=1 To CountCollisions(player1)
If CollisionNY(player1,checkallcollisions)>0;0.03125*sizey
jump=False
velud=-1
Exit
End If
Next
If jump=False
velud=8;8,11,14,16,18 (1-5 blocks respectfully)
jump=True
End If
End If
End If
If KeyHit(15) jroutine=Not jroutine ;tab ;toggles jumping routines
;move up
If KeyDown(mup)=True
If CountCollisions(PLAYER1)=0
If VELNS=0 VELN=1
ElseIf CountCollisions(PLAYER1)>0
veln=veln+walkspeed
If veln>5*walkspeed veln=5*walkspeed
End If
ElseIf KeyDown(mup)=False
If CountCollisions(PLAYER1)>0
veln=veln-walkspeed
If veln<0 veln=0
End If
End If
;move down
If KeyDown(mdn)=True
If CountCollisions(PLAYER1)=0
If VELNS=0 VELS=1
ElseIf CountCollisions(PLAYER1)>0
vels=vels+walkspeed
If vels>5*walkspeed vels=5*walkspeed
End If
ElseIf KeyDown(mdn)=False
If CountCollisions(PLAYER1)>0
vels=vels-walkspeed
If vels<0 vels=0
End If
End If
velns=veln-vels ;balances north(up) and south(down) movement
;move left
If KeyDown(mlt)=True
If CountCollisions(PLAYER1)=0
If VELWE=0 VELW=1
ElseIf CountCollisions(PLAYER1)>0
velw=velw+walkspeed
If velw>5*walkspeed velw=5*walkspeed
End If
ElseIf KeyDown(mlt)=False
If CountCollisions(PLAYER1)>0
velw=velw-walkspeed
If velw<0 velw=0
End If
End If
;move RIGHT
If KeyDown(mrt)=True
If CountCollisions(PLAYER1)=0
If VELWE=0 VELE=1
ElseIf CountCollisions(PLAYER1)>0
velE=velE+walkspeed
If velE>5*walkspeed velE=5*walkspeed
End If
ElseIf KeyDown(mRT)=False
If CountCollisions(PLAYER1)>0
velE=velE-walkspeed
If velE<0 velE=0
End If
End If
velWE=velE-velW ;balances west(left) and east(right) movement
If velwe<>0 tmpdir=-(Sgn(velwe)-1)/2 ;calculate char dir using valwe
If tmpdir<>plyrdir
plyrdir=tmpdir
direction(player1,plyr1tex,tmpdir)
End If
;CHARACTER MOVEMENT
MoveEntity player1,Float(velwe)/160,Float(velud)/32,Float(velns)/160
;--------------------------------------------
;--------------------------------------------------------------------------------
UpdateWorld ;UPDATE YOUR 3D WORLD
Next
RenderWorld TWEEN# ; RENDERS CURRENT SCREEN FROM BACKGROUND BUFFER (INCLUDING TWEENING)
;ADDED TEXT---------------------------------------------------------
Color 255,255,255
Text 0, 0,EntityX(PLAYER1)+","+EntityY(PLAYER1)+","+EntityZ(PLAYER1)
Text 0,10,VELNS+", "+VELWE+", "+VELUD
Text 0,20,"[TAB] Toggle jumping: "+jroutine
Text 20,30,"press [JUMP] to Jump."
If jroutine=1 Text 20,40,"hold & release [JUMP] to ChargeJump"
;-------------------------------------------------------------------
Flip ; show new screen update
Until KeyHit(1) Or (EntityCollided(Player1,CLSN_GRND)=exitcube) Or (EntityY(player1)<-2 Or EntityY(player1)>11);END MAIN LOOP
;CLEAN UP STUFF
time=0
elapsed=0
frameticks=0
tween#=0
checkticks=0
ClearWorld ;remove entities, brushes, textures from memory (anything missed)
ClearCollisions ;clear all collisions from memory
EndGraphics
flush
Function DIRECTION(SPR,TEX,FRM);CHANGE IMAGE ON SPRITE
EntityTexture SPR,TEX,FRM
End Function
Function flush() ;flush all inputs from memory
FlushKeys ;clear keyboard presses
FlushMouse ;clear mouse clicks
FlushJoy ;clear joystick presses
End Function
Function restorebmp()
;set gfxmode
Graphics 320,240,16,3
;Create Image
tmp=CreateImage(64,32)
;set buffer to image
SetBuffer ImageBuffer(tmp)
;if char1.bmp doesn't exist... make it
If FileType("char1.bmp")=2 DeleteDir "char1.bmp"
If FileType("char1.bmp")=0
Cls
Restore char
For v=0 To 31
For h=0 To 31
Read c
If c>0
Color (c-1)*84+7*(c=1),(c-1)*84+7*(c=1),(c-1)*84+7*(c=1)
Plot h,v
Plot 63-h,v
End If
Next
Next
SaveImage tmp,"char1.bmp"
End If
;if laser1.bmp doesn't exist... make it
If FileType("laser1.bmp")=2 DeleteDir "laser1.bmp"
If FileType("laser1.bmp")=0
Cls
For c=0 To 3
Color c*63+63,c*63+63,c*63+63
Rect 8,c+12,16,7-2*c
Rect c+12+32,8,7-2*c,16
Next
SaveImage tmp,"laser1.bmp"
End If
;if bullet1.bmp doesn't exist... make it
If FileType("bullet1.bmp")=2 DeleteDir "bullet1.bmp"
If FileType("bullet1.bmp")=0
Cls
For c=0 To 3
Color c*63+63,c*63+63,c*63+63
Oval c*3/2+8,c*3/2+8,16-2*(c*3/2),16-2*(c*3/2)
Oval c+2+32+8,c+2+8,16-2*(c+2),16-2*(c+2)
Next
SaveImage tmp,"bullet1.bmp"
End If
End Function
.char
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Comments
| ||
| AWESOME!!!!!!!!!! ((O)_(O)) |
| ||
| I hope this helps everyone. It would be cool to hear if anyone used these jump routines. |
| ||
| How did you make the player image? |
| ||
| Its in the Data statement. Then look at the routine RestoreBMP. It is pretty straight forward. Well, it is to me. If you need a further explanation, let me know. |
| ||
| It is very cool to be able to actually make a character image from code. Nice work! :) |
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| Thanks. It really isnt that hard to do so. I plan on making backup image files like that. You know just incase files are missing. I do know that happens from time to time. |
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| I have an update for the jumping routines. When i looked over the code it appears i didnot need a "jump" variable. i changed into this: and it works the same exact way. Talk about removing some sensless code huh? Well below is the full update. I am still keeping the original code (at the start of the archive thread) just in case if it is easier to understand. |
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| This is the best example of jumping code I have ever seen. Brilliant work. Keep it up. |
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| The basics should work for 2d jumping as well. |
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