; ------------------------------------------------------------
;
; PureBasic - Terrain : Terrain Blend change
;
; (c) Fantaisie Software
;
; ------------------------------------------------------------
;
; Use left button to select an area, then use PageUp or PageDown to change terrain's blend map
#CameraSpeed = 1
#TerrainMiniX = 0
#TerrainMiniY = 0
#TerrainMaxiX = 0
#TerrainMaxiY = 0
#NbSommet = 36
#SizeCircle = 70
Define.f KeyX, KeyY, MouseX, MouseY, TimeSinceLastFrame
Define Selected
Declare InitBlendMaps()
Declare Clamp(*var.float, min.f, max.f)
Declare AffichePolygone(Px.f, Py.f, Pz.f, Rayon.f)
Declare DoTerrainModify(tx, ty, wx.f, wy.f, wz.f, mBrushSizeTerrainSpace.f, height.f)
InitEngine3D()
InitSprite()
InitKeyboard()
InitMouse()
ExamineDesktops():dx=DesktopWidth(0)*0.8:dy=DesktopHeight(0)*0.8
OpenWindow(0, 0,0, DesktopUnscaledX(dx),DesktopUnscaledY(dy), "RealTime Terrain Blend Change - [MouseClick] [PageUp]/[PageDown] [Esc] quit",#PB_Window_ScreenCentered)
OpenWindowedScreen(WindowID(0), 0, 0, dx, dy, 0, 0, 0)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Textures/", #PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Textures/nvidia", #PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/GUI", #PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Packs/desert.zip", #PB_3DArchive_Zip)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Main",#PB_3DArchive_FileSystem)
Add3DArchive(#PB_Compiler_Home + "examples/3d/Data/Terrain",#PB_3DArchive_FileSystem)
Parse3DScripts()
MaterialFilteringMode(#PB_Default, #PB_Material_Anisotropic, 8)
;- Light
;
light = CreateLight(#PB_Any ,RGB(185, 185, 185),4000,1200, 1000,#PB_Light_Directional)
SetLightColor(light, #PB_Light_SpecularColor, RGB(255*0.4, 255*0.4,255*0.4))
LightDirection(light, 0.55, -0.3, -0.75)
AmbientColor(RGB(5, 5,5))
;- Camera
;
CreateCamera(0, 0, 0, 100, 100)
MoveCamera(0, 2000, 100, 1700, #PB_Absolute)
CameraRange(0, 1, 0)
;----------------------------------
; terrain definition
SetupTerrains(LightID(Light), 3000, #PB_Terrain_NormalMapping)
; initialize terrain
CreateTerrain(0, 513, 12000, 600, 3, "TerrainBlend", "dat")
; set all texture will be use when terrrain will be constructed
AddTerrainTexture(0, 0, 100, "dirt_grayrocky_diffusespecular.jpg", "dirt_grayrocky_normalheight.jpg")
AddTerrainTexture(0, 1, 30, "grass_green-01_diffusespecular.jpg", "grass_green-01_normalheight.jpg")
AddTerrainTexture(0, 2, 200, "growth_weirdfungus-03_diffusespecular.jpg", "growth_weirdfungus-03_normalheight.jpg")
;- define terrains
For ty = #TerrainMiniY To #TerrainMaxiY
For tx = #TerrainMiniX To #TerrainMaxiX
Imported = DefineTerrainTile(0, tx, ty, "terrain513.png", ty % 2, tx % 2)
Next
Next
BuildTerrain(0)
If Imported = #True
InitBlendMaps()
UpdateTerrain(0)
; If enabled, it will save the terrain as a (big) cache for a faster load next time the program is executed
; SaveTerrain(0, #False)
EndIf
; SkyBox
;
SkyBox("desert07.jpg")
ShowGUI(128, 1)
Repeat
While WindowEvent():Wend
If ExamineMouse()
MouseX = -(MouseDeltaX()/10)
MouseY = -(MouseDeltaY()/10)
InputEvent3D(MouseX(), MouseY(), MouseButton(#PB_MouseButton_Left))
TerrainMousePick(0, CameraID(0), MouseX(), MouseY())
If MouseButton(#PB_MouseButton_Left)
ShowGUI(128, 1)
AffichePolygone(PickX(), PickY(), PickZ(), 100)
Selected = #True
Else
ShowGUI(128, 0)
MoveCamera (0, KeyX, 0, KeyY)
AffichePolygone(PickX(), PickY(), PickZ(), 0)
Selected = #False
If CameraY(0) < TerrainHeight(0, CameraX(0), CameraZ(0)) + 10
MoveCamera(0, CameraX(0), TerrainHeight(0, CameraX(0), CameraZ(0)) + 10, CameraZ(0), #PB_Absolute)
EndIf
RotateCamera(0, MouseY, MouseX, 0, #PB_Relative)
EndIf
EndIf
If ExamineKeyboard()
If KeyboardPushed(#PB_Key_Left)
KeyX = -#CameraSpeed
ElseIf KeyboardPushed(#PB_Key_Right)
KeyX = #CameraSpeed
Else
KeyX = 0
EndIf
If KeyboardPushed(#PB_Key_Up)
KeyY = -#CameraSpeed
ElseIf KeyboardPushed(#PB_Key_Down)
KeyY = #CameraSpeed
Else
KeyY = 0
EndIf
Modify = 0
If KeyboardPushed(#PB_Key_PageUp)
Modify = 1
ElseIf KeyboardPushed(#PB_Key_PageDown)
Modify = -1
EndIf
EndIf
If Modify And Selected
For ty = #TerrainMiniY To #TerrainMaxiY
For tx = #TerrainMiniX To #TerrainMaxiX
DoTerrainModify(tx, ty, PickX(), PickY(), PickZ(), 0.02, TimeSinceLastFrame * Modify)
Next
Next
EndIf
TimeSinceLastFrame = RenderWorld() / 1000
FlipBuffers()
Until KeyboardPushed(#PB_Key_Escape)
End
Procedure InitBlendMaps()
minHeight0.f = 70
fadeDist0.f = 40
minHeight1.f = 70
fadeDist1.f = 15
For ty = #TerrainMiniY To #TerrainMaxiY
For tx = #TerrainMiniX To #TerrainMaxiX
Size = TerrainTileLayerMapSize(0, tx, ty)
For y = 0 To Size-1
For x = 0 To Size-1
Height.f = TerrainTileHeightAtPosition(0, tx, ty, 1, x, y)
val.f = (Height - minHeight0) / fadeDist0
Clamp(@val, 0, 1)
SetTerrainTileLayerBlend(0, tx, ty, 1, x, y, val)
val.f = (Height - minHeight1) / fadeDist1
Clamp(@val, 0, 1)
SetTerrainTileLayerBlend(0, tx, ty, 2, x, y, val)
Next
Next
UpdateTerrainTileLayerBlend(0, tx, ty, 1)
UpdateTerrainTileLayerBlend(0, tx, ty, 2)
Next
Next
EndProcedure
Procedure Clamp(*var.float, min.f, max.f)
If *var\f < min
*var\f = min
ElseIf *var\f > max
*var\f = max
EndIf
EndProcedure
Procedure.f Min(a.f, b.f)
If a < b
ProcedureReturn a
Else
ProcedureReturn b
EndIf
EndProcedure
Procedure.f Max(a.f, b.f)
If a > b
ProcedureReturn a
Else
ProcedureReturn b
EndIf
EndProcedure
Procedure DoTerrainModify(tx, ty, wx.f, wy.f, wz.f, mBrushSizeTerrainSpace.f, TimeElapsed.f)
imgSize.f = TerrainTileLayerMapSize(0, tx, ty)
Pointx.f = TerrainTilePointX(0, tx, ty, wx, wy, wz)
Pointy.f = TerrainTilePointY(0, tx, ty, wx, wy, wz)
startx = (Pointx - mBrushSizeTerrainSpace) * imgSize
starty = (Pointy - mBrushSizeTerrainSpace) * imgSize
endx = (Pointx + mBrushSizeTerrainSpace) * imgSize
endy = (Pointy + mBrushSizeTerrainSpace) * imgSize
startx = Max(startx, 0)
starty = Max(starty, 0)
endx = Min(endx, imgSize)
endy = Min(endy, imgSize)
For y = starty To endy
For x = startx To endx
tsXdist.f = (x / imgSize) - Pointx
tsYdist.f = (y / imgSize) - Pointy
weight.f = Min(1.0, Sqr(tsYdist * tsYdist + tsXdist * tsXdist) / (0.5 * mBrushSizeTerrainSpace))
weight = 1.0 - (weight * weight)
paint.f = weight * TimeElapsed
imgY = imgSize - y
val.f = GetTerrainTileLayerBlend(0, tx, ty, 1, x, imgY) + paint
Clamp(@val, 0, 1)
SetTerrainTileLayerBlend(0, tx, ty, 1, x, imgY, val)
Next x
Next y
UpdateTerrainTileLayerBlend(0, tx, ty, 1)
EndProcedure
Procedure AffichePolygone(Px.f, Py.f, Pz.f, Rayon.f)
Define.l i, Color = RGB(255, 255, 0)
Define.f Angle, Sx, Sy, Sz, Sx1, Sy1, Sz1, Py1, Delta = 2
For i = 0 To #NbSommet-2
Sx = Cos(Angle) * Rayon
Sz = Sin(Angle) * Rayon
Angle + 2.0 * #PI / #NbSommet
Sx1 = Cos(Angle) * Rayon
Sz1 = Sin(Angle) * Rayon
Py = TerrainHeight(0, Px + Sx, Pz + Sz) + Delta
Py1 = TerrainHeight(0, Px + Sx1, Pz + Sz1) + Delta
CreateLine3D(i, Px + Sx, Py, Pz + Sz, Color, Px + Sx1, Py1, Pz + Sz1, Color)
Next i
Py = TerrainHeight(0, Px + Cos(0) * Rayon, Pz + Sin(0) * Rayon) + Delta
CreateLine3D(i, Px + Sx1, Py1, Pz + Sz1, Color, Px + Cos(0) * Rayon, Py, Pz + Sin(0) * Rayon, Color)
EndProcedure