+ Code Snippetrem ZoomRacer (Tentative Title)
rem Prerelease Alpha 1
rem ##INTRO##
SYNC ON : SYNC RATE 0
Hide Mouse
`Set the global variables
False=0
True=1
playerSize#=50
`Sets the fastest speed at which the ball can rotate
`Current Max = approx. 8
playerRotationSpeedCap#=10
playerSpeed#=10
playerRotationSpeed#=2
acceleration#=0
accelerationcap#=1
`Following line can be set to True/False to allow player to rotate while not moving
playerRotatesWhileStill=True
playerRotateX#=0
playerRotateY#=0
playerRotateZ#=0
`Make a timer to update the player every x per/sec
updatePlayerInterval=60
baseTimer=Timer()
updatePlayerTimer=baseTimer
CreateWorld()
CreateBall()
`Main Program Loop
Do
`Check the timer to see if the player needs updating
baseTimer=Timer()
if updatePlayerTimer < baseTimer Then Gosub UpdatePlayer
`Update the camera
Set Camera to follow playerX#, playerY#, playerZ#, playerRotateY#, playerSize#*4, playerSize#*4, 1, 0
Point camera playerX#,playerSize#/2,playerZ#
`Display the fps
text 8,0,"fps: " + str$(screen fps() )
text 20,20, str$(acceleration#)
text 20,40, str$(playerMaxRotation#)
`Update the screen
Sync
Loop
`Player update subroutine
UpdatePlayer:
playerSpeed#=20
`Handle the player input
If Upkey()=1
If acceleration# < accelerationcap#
acceleration# = acceleration# + 0.05
Else
acceleration# = 1.01
EndIf
`playerSpeed#=playerSpeed#+10
Endif
If Downkey()=1
` playerSpeed#=playerSpeed#-10
If acceleration > 0
acceleration# = acceleration# - 0.02
Else
acceleration = 0
EndIf
Endif
If Leftkey()=1
if playerRotatesWhileStill=True then YRotate Object 1,WrapValue(0-playerRotationSpeed#)
playerRotateY#=WrapValue(playerRotateY#-playerRotationSpeed#)
Endif
If Rightkey()=1
if playerRotatesWhileStill=True then YRotate Object 1,WrapValue(playerRotationSpeed#)
playerRotateY#=WrapValue(playerRotateY#+playerRotationSpeed#)
Endif
`Get the player object's current location
playerX# = Object position X(1)
playerY# = Object position Y(1)
playerZ# = Object position Z(1)
`Get the player object's current rotation
playerAngleX# = Object angle X(1)
playerAngleY# = Object angle Y(1)
playerAngleZ# = Object angle Z(1)
`Calculate the required movement vector for the player object
playerVectorLength#=playerSpeed#*acceleration#
playerVectorX#=sin(playerRotateY#)*playerVectorLength#
playerVectorZ#=cos(playerRotateY#)*playerVectorLength#
If Object Position Y(1) < Get Ground Height(1,playerX#+playerVectorX#,playerZ#+playerVectorZ#)
playerVectorY#=Get Ground Height(1,playerX#+playerVectorX#,playerZ#+playerVectorZ#)
else
if Object Position Y(1) > Get Ground Height(1,playerX#+playerVectorX#,playerZ#+playerVectorZ#)
playerVectorY#=Get Ground Height(1,playerX#+playerVectorX#,playerZ#+playerVectorZ#)
endif
Endif
`fatalerror(str$(CurveValue(Get Ground Height(1,playerX#+playerVectorX#,playerZ#+playerVectorZ#),Object Position Y(1),acceleration#)))
`Get the maximum angle of rotation along any axis
playerMaxRotation#=abs(playerVectorLength#)*((playerSize#*3.14159)/360)
If playerMaxRotation# > playerRotationSpeedCap#
playerMaxRotation# = playerRotationSpeedCap#
EndIf
`Position the player object, then from it's new position calculate the required rotation
Position object 1,playerX#+playerVectorX#,playerY#,playerZ#
playerX# = Object position X(1)
XRotate object 1,WrapValue(playerVectorLength#*(playerMaxRotation#*(cos(playerAngleY#-playerRotateY#)*abs(cos(playerAngleY#-playerRotateY#)))))
Position object 1,playerX#,playerY#,playerZ#+playerVectorZ#
playerZ# = Object position Z(1)
ZRotate object 1,WrapValue(playerVectorLength#*(playerMaxRotation#*(cos((playerAngleY#-playerRotateY#)-90)*abs(cos((playerAngleY#-playerRotateY#)-90)))))
Position object 1,playerX#,playerVectorY#+(playerSize#/2),playerZ#
playerY# = Object position Y(1)
`fix the objects pivot
fix object pivot 1
` change acceleration
If acceleration# > 0
acceleration# = acceleration# - 0.01
Else
acceleration# = 0
EndIf
`Update the player timer
updatePlayerTimer=baseTimer+(1000/updatePlayerInterval)
Return
Function CreateBall()
`Load Ball Image
Load Bitmap "Data\Images\ball1.bmp", 1
Get Image 2,0,0,256,256
Delete Bitmap 1
`Make the Player sphere & set position
Make Object Sphere 1,50
Texture Object 1,2
Ghost Object On 1
Position Object 1,1000,(playerSize/2)+Get Ground Height(1,1000,1000),1000
Load Image "Data\Images\pt1.bmp",3
EndFunction
Function CreateWorld()
`Load floor image
Load Bitmap "Data\Images\floor1.bmp",1
Get Image 1, 0,0,256,256
Delete Bitmap 1
`Make a Matrix
Make Matrix 1,2000,2000,11,11
Position Matrix 1,0,0,0
Prepare Matrix Texture 1,1,2,2
Set Matrix Height 1,5,5,100
Set Matrix Height 1,5,6,100
update matrix 1
EndFunction