hey dmitros there was an error in that code snippet. at line 93 you had
If cax#90.0 Then cax#=90.0
it should have been
If cax#=90.0 Then cax#=90.0
so this is dmitros's whole code snippet for anyone who wants it
`*******************************************************************************
`* By: DMiTR0S dmitr0s@newmail.ru *
`*******************************************************************************
`*******************************************************************************
`* Free License Agreement. *
`* *
`* The user/developer agrees to include a visible credit to "Dmitri Kuschev" *
`* within your programs documentation and or web site. *
`* *
`* The user/developer agrees to NOT offer the this source code for Sale. *
`* *
`* Providing the user/Developer agrees in full to the previous Free *
`* License Agreement clauses, the user/developer may use this source *
`* code FREELY in all their products, commercial or otherwise. *
`* *
`*******************************************************************************
Set Display Mode 1024, 768, 32
Autocam off
Randomize Timer()
Global Distance# As Float
Global IntersectionPointX# As Float
Global IntersectionPointY# As Float
Global IntersectionPointZ# As Float
MoveVector=1
MatrixClone=1
Matrix=1
Step#=5.0
width=500*2.0
depth=500*2.0
xTiles=30
zTiles=30
r=Make Vector3(MoveVector)
Make Matrix Matrix ,width, depth, xTiles, zTiles
Randomize Matrix Matrix, 50
Update Matrix Matrix
Position Matrix Matrix, RND(10), RND(10), RND(10)
Position Camera width/2, 200.0, -500.0
MakeObjectFromMatrix(Matrix, MatrixClone, xTiles, zTiles, width/(xTiles*1.0), depth/(zTiles*1.0), xTiles+1)
Make Object Sphere 10, 5.0
Color Object 10, RGB(0,255,0)
Make Object Sphere 11, 10.0
Color Object 11, RGB(255,0,0)
Position Object 11, Matrix Position X(Matrix)+RND(width), 0.0, Matrix Position Z(Matrix)+RND(height)
Sync Rate 0
Sync On
Do
Gosub Camera
Gosub NewDestinationPoint
Gosub MoveSphere
Gosub PrintInfo
Sync
Loop
NewDestinationPoint:
GetMatrixCloneIntersection(MatrixClone)
If GetDistanceToObject()>0.0
Show Object 10
Position Object 10, GetIntersectionPointX(), GetIntersectionPointY(), GetIntersectionPointZ()
EndIf
Return
MoveSphere:
If UpKey()
Set Vector3 MoveVector, GetIntersectionPointX()-Object Position X(11), GetIntersectionPointY()-Object Position Y(11), GetIntersectionPointZ()-Object Position Z(11)
If Length Vector3(MoveVector) > Step#
Normalize Vector3 MoveVector, MoveVector
Multiply Vector3 MoveVector, Step#
NewX#=Object Position X(11)+X Vector3(MoveVector)
NewZ#=Object Position Z(11)+Z Vector3(MoveVector)
NewY#=Matrix Position Y(Matrix)+Get Ground Height(Matrix, NewX#-Matrix Position X(Matrix), NewZ#-Matrix Position Z(Matrix))
Position Object 11, NewX#, NewY#, NewZ#
Else
Position Object 11, GetIntersectionPointX(), GetIntersectionPointY(), GetIntersectionPointZ()
EndIf
EndIf
Return
Camera:
If MouseClick()=1
cay#=cay#+(Mousemovex()/10.0)
cax#=cax#+(Mousemovey()/10.0)
If cax#=90.0 Then cax#=90.0
ax#=Curveangle(cax#,ax#,2.0)
ay#=Curveangle(cay#,ay#,2.0)
Rotate Camera Wrapvalue(ax#*-1),Wrapvalue(ay#),Wrapvalue(caz)
EndIf
If Mouseclick()=2
cy#=cy#+MousemoveY()
Move Camera MousemoveX()
Position Camera Camera Position X(), cy#, Camera Position Z()
EndIf
return
PrintInfo:
Text 10, 10, "Code by: Dmitri Kuschev"
Text 10, 30, "E-mail: dmitr0s@newmail.ru"
Text 10, 50, "FPS "+Str$(Screen FPS())
Text 10, 70, "Press Up to move the red sphere towards the destination point"
Text 10, 90, "Step: "+Str$(Step#)
Text 10, 110, "Distance from the camera to the destination point: "+Str$(GetDistanceToObject())
Text 10, 130, "Position of the red sphere on the matrix in world coordinates:"
Text 10, 150, "X = "+Str$(Object Position X(11))
Text 10, 170, "Y = "+Str$(Object Position Y(11))
Text 10, 190, "Z = "+Str$(Object Position Z(11))
Text 10, 210, "Position of the red sphere on the matrix in matrix coordinates:"
Text 10, 230, "X = "+Str$(Object Position X(11)-Matrix Position X(1))
Text 10, 250, "Y = "+Str$(Object Position Y(11)-Matrix Position Y(1))
Text 10, 270, "Get Ground Height( Matrix, X, Z ) = "+Str$(Get Ground Height(Matrix, Object Position X(11)-Matrix Position X(1), Object Position Z(11)-Matrix Position Z(1)))
Text 10, 290, "Z = "+Str$(Object Position Z(11)-Matrix Position Z(1))
Text 10, 310, "Destination point in world coordinates:"
Text 10, 330, "GetIntersectionPointX() X = "+Str$(GetIntersectionPointX())
Text 10, 350, "GetIntersectionPointY() Y = "+Str$(GetIntersectionPointY())
Text 10, 370, "GetIntersectionPointZ() Z = "+Str$(GetIntersectionPointZ())
Text 10, 390, "Destination point in matrix coordinates:"
Text 10, 410, "X = "+Str$(GetIntersectionPointX()-Matrix Position X(1))
Text 10, 430, "Y = "+Str$(GetIntersectionPointY()-Matrix Position Y(1))
Text 10, 450, "Z = "+Str$(GetIntersectionPointZ()-Matrix Position Z(1))
Return
Function MakeObjectFromMatrix(Matrix, Object, ,MXSegments, MZSegments, MXSegmentSize#, MZSegmentSize#, VIR)
VerticlesCount=(MXSegments)*(MZSegments)*6
FVFFormat=338
FVFSize=36
If Memblock Exist(1) Then Delete Memblock 1
Make Memblock 1, 12+VerticlesCount*FVFSize
Write Memblock Dword 1, 0, FVFFormat
Write Memblock Dword 1, 4, FVFSize
Write Memblock Dword 1, 8, VerticlesCount
For SX=1 to MXSegments
For SZ=1 To MZSegments
Num=MXSegments*(SZ-1)+SX
Poly1X1#=Matrix Position X(Matrix)+(SX-1)*MXSegmentSize#
Poly1Y1#=Matrix Position Y(Matrix)+Get Matrix Height(1, SX-1, SZ-1)
Poly1Z1#=Matrix Position Z(Matrix)+(SZ-1)*MZSegmentSize#
Poly1X2#=Matrix Position X(Matrix)+(SX-1)*MXSegmentSize#
Poly1Y2#=Matrix Position Y(Matrix)+Get Matrix Height(1, SX-1, SZ)
Poly1Z2#=Matrix Position Z(Matrix)+SZ*MZSegmentSize#
Poly1X3#=Matrix Position X(Matrix)+SX*MXSegmentSize#
Poly1Y3#=Matrix Position Y(Matrix)+Get Matrix Height(1, SX, SZ)
Poly1Z3#=Matrix Position Z(Matrix)+SZ*MZSegmentSize#
Poly2X1#=Matrix Position X(Matrix)+(SX-1)*MXSegmentSize#
Poly2Y1#=Matrix Position Y(Matrix)+Get Matrix Height(1, SX-1, SZ-1)
Poly2Z1#=Matrix Position Z(Matrix)+(SZ-1)*MZSegmentSize#
Poly2X2#=Matrix Position X(Matrix)+SX*MXSegmentSize#
Poly2Y2#=Matrix Position Y(Matrix)+Get Matrix Height(1, SX, SZ)
Poly2Z2#=Matrix Position Z(Matrix)+SZ*MZSegmentSize#
Poly2X3#=Matrix Position X(Matrix)+SX*MXSegmentSize#
Poly2Y3#=Matrix Position Y(Matrix)+Get Matrix Height(1, SX, SZ-1)
Poly2Z3#=Matrix Position Z(Matrix)+(SZ-1)*MZSegmentSize#
Write Memblock Float 1, 12+216*(Num-1), Poly1X1#
Write Memblock Float 1, 16+216*(Num-1), Poly1Y1#
Write Memblock Float 1, 20+216*(Num-1), Poly1Z1#
Write Memblock Float 1, 24+216*(Num-1), 0.0
Write Memblock Float 1, 28+216*(Num-1), 0.0
Write Memblock Float 1, 32+216*(Num-1), -1.0
Write Memblock Dword 1, 36+216*(Num-1), -1
Write Memblock Float 1, 40+216*(Num-1), 0.0
Write Memblock Float 1, 44+216*(Num-1), 1.0
Write Memblock Float 1, 48+216*(Num-1), Poly1X2#
Write Memblock Float 1, 52+216*(Num-1), Poly1Y2#
Write Memblock Float 1, 56+216*(Num-1), Poly1Z2#
Write Memblock Float 1, 60+216*(Num-1), 0.0
Write Memblock Float 1, 64+216*(Num-1), 0.0
Write Memblock Float 1, 68+216*(Num-1), -1.0
Write Memblock Dword 1, 72+216*(Num-1), -1
Write Memblock Float 1, 76+216*(Num-1), 0.0
Write Memblock Float 1, 80+216*(Num-1), 0.0
Write Memblock Float 1, 84+216*(Num-1), Poly1X3#
Write Memblock Float 1, 88+216*(Num-1), Poly1Y3#
Write Memblock Float 1, 92+216*(Num-1), Poly1Z3#
Write Memblock Float 1, 96+216*(Num-1), 0.0
Write Memblock Float 1, 100+216*(Num-1), 0.0
Write Memblock Float 1, 104+216*(Num-1), -1.0
Write Memblock Dword 1, 108+216*(Num-1), -1
Write Memblock Float 1, 112+216*(Num-1), 1.0
Write Memblock Float 1, 116+216*(Num-1), 1.0
Write Memblock Float 1, 120+216*(Num-1), Poly2X1#
Write Memblock Float 1, 124+216*(Num-1), Poly2Y1#
Write Memblock Float 1, 128+216*(Num-1), Poly2Z1#
Write Memblock Float 1, 132+216*(Num-1), 0.0
Write Memblock Float 1, 136+216*(Num-1), 0.0
Write Memblock Float 1, 140+216*(Num-1), -1.0
Write Memblock Dword 1, 144+216*(Num-1), -1
Write Memblock Float 1, 148+216*(Num-1), 1.0
Write Memblock Float 1, 152+216*(Num-1), 0.0
Write Memblock Float 1, 156+216*(Num-1), Poly2X2#
Write Memblock Float 1, 160+216*(Num-1), Poly2Y2#
Write Memblock Float 1, 164+216*(Num-1), Poly2Z2#
Write Memblock Float 1, 168+216*(Num-1), 0.0
Write Memblock Float 1, 172+216*(Num-1), 0.0
Write Memblock Float 1, 176+216*(Num-1), -1.0
Write Memblock Dword 1, 180+216*(Num-1), -1
Write Memblock Float 1, 184+216*(Num-1), 1.0
Write Memblock Float 1, 188+216*(Num-1), 1.0
Write Memblock Float 1, 192+216*(Num-1), Poly2X3#
Write Memblock Float 1, 196+216*(Num-1), Poly2Y3#
Write Memblock Float 1, 200+216*(Num-1), Poly2Z3#
Write Memblock Float 1, 204+216*(Num-1), 0.0
Write Memblock Float 1, 208+216*(Num-1), 0.0
Write Memblock Float 1, 212+216*(Num-1), -1.0
Write Memblock Dword 1, 216+216*(Num-1), -1
Write Memblock Float 1, 220+216*(Num-1), 0.0
Write Memblock Float 1, 224+216*(Num-1), 1.0
Next SZ
Next SX
Make Mesh From Memblock 1, 1
If Object Exist(Object) Then Delete Object Object
Make Object Object, 1, 22
Hide Object Object
EndFunction
Function GetMatrixCloneIntersection(Obj)
DestPoint=2
ViewMatrix=101
ProjectionMatrix=102
r=Make Matrix4(ViewMatrix)
r=Make Matrix4(ProjectionMatrix)
r=Make Vector3(DestPoint)
X#=2.0*(Mousex()*1.0)/(Screen Width()*1.0)-1.0
Y#=1.0-2.0*(MouseY()*1.0)/(Screen Height()*1.0)
Set Vector3 DestPoint, X#, Y#, 1.0
View Matrix4 ViewMatrix
Projection Matrix4 ProjectionMatrix
r=Inverse Matrix4(ViewMatrix, ViewMatrix)
r=Inverse Matrix4(ProjectionMatrix, ProjectionMatrix)
Transform Coords Vector3 DestPoint, DestPoint, ProjectionMatrix
Normalize Vector3 DestPoint, DestPoint
Multiply Vector3 DestPoint, 1000.0
Transform Coords Vector3 DestPoint, DestPoint, ViewMatrix
Distance#=Intersect Object(Obj, Camera Position X(), Camera Position Y(), Camera Position Z(), X Vector3(DestPoint), Y Vector3(DestPoint), Z Vector3(DestPoint))
Set Vector3 DestPoint, (X Vector3(DestPoint)-Camera Position X()), (Y Vector3(DestPoint)-Camera Position Y()), (Z Vector3(DestPoint)-Camera Position Z())
Normalize Vector3 DestPoint, DestPoint
Multiply Vector3 DestPoint, Distance#
Set Vector3 DestPoint, X Vector3(DestPoint)+Camera Position X(), Y Vector3(DestPoint)+Camera Position Y(), Z Vector3(DestPoint)+Camera Position Z()
If Distance#>0.0
IntersectionPointX#=X Vector3(DestPoint)
IntersectionPointY#=Y Vector3(DestPoint)
IntersectionPointZ#=Z Vector3(DestPoint)
Else
IntersectionPointX#=0.0
IntersectionPointY#=0.0
IntersectionPointZ#=0.0
EndIf
EndFunction
Function GetIntersectionPointX()
EndFunction IntersectionPointX#
Function GetIntersectionPointY()
EndFunction IntersectionPointY#
Function GetIntersectionPointZ()
EndFunction IntersectionPointZ#
Function GetDistanceToObject()
EndFunction Distance#
Delete Memblock 1
