Terrain Editor Mouse Position Problem
Blitz3D Forums/Blitz3D Programming/Terrain Editor Mouse Position Problem
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| Hello, Im trying to get my mouse to position on the terrain right.. Im making a map editor for a MMORPG a freind and I are working on and I need help getting the mouse(cursor) to move along the terrain including height... <quote> mx = MouseX() my = MouseY() mz = MouseZ() mouse_y = TerrainY(terrain,mx,my,mz)+2 PositionEntity cursor,mx*x_scale,mouse_y*y_scale,mz*z_scale </quote> this is all I have so far, but still no mouse following the terrain... If you could help, thank you.. |
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| MouseZ() is not a 3d location.. its the position the mouse scroll wheel is turned to. Also mx and my in your equation is 2d screen coordinates, not 3d world space so the call to the terrainY is completely wrong. You'll need to check into CameraProject and CameraPick's to accomplish this task. |
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| To get a simple mouse cursor to be able to click on the terrain I would suggest the following method: Load your object you wish to use as the mouse cursor. Make it the child of the camera. Position it at the camera's position then move it in the Z direction a distance equal to the Screen Width divided by 2. Like this: ie Camera=createcamera() Mouse3d=loadmesh("MouseMesh.b3d",Camera) moveentity Mouse3d,0,0,Screen Width / 2 entityorder Mouse3d,-1 then in your main loop Moveentity Mouse3d,MouseXSpeed(),-MouseYSpeed(),0 (I cannot remember if the function's name is MouseSpeedX() or MouseXSpeed() but whichever one it is use that) You will need to use the pick commands to cause the mouse to interact with the terrain. |
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| Coolness thanks Im almost done with the terrain part of my editor now.. |
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| Hmm that code didn't work :( |
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| Um, That would only work if you don't move the camera. try this: (assuming terrain is the handle of your terrain) ;In the start of the program ,after creating the terrain: EntityPickMode terrain,2 ;In your editer's loop, do this to find the coordinates on the terrain the mouse is at: CameraPick camera,MouseX(),MouseY() ;Assuming camera is your camera's handle If PickedEntity()=terrain Then x#=PickedX#() y#=PickedY#() z#=PickedZ#() EndIf |
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| well neither of these two codes worked :( Im lost now... |
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| Try this as a basic program. You will need to supply your own terrain height map (32x32) and your own grass texture. <code> Graphics3D 800,600 camera=CreateCamera() terrain=LoadTerrain("map.bmp") grasstex=LoadTexture("grass.bmp") EntityTexture terrain,grasstex ScaleTexture grasstex,6,6 ScaleEntity terrain,8,10,6 mouse3d=CreateSphere(8,camera) ScaleEntity mouse3d,10,10,10 PositionEntity mouse3d,EntityX(camera,True),EntityY(camera,True),EntityZ(camera,True) EntityOrder mouse3d,-1 MoveEntity mouse3d,0,0,400 MoveMouse 400,300 MX=MouseX() MY=MouseY() TotalMX=0 TotalMY=0 PositionEntity camera,120,60,80 Repeat simplecameramovement(camera) MX=MouseXSpeed() MY=MouseYSpeed() MoveEntity mouse3d,MX,-MY,0 UpdateWorld RenderWorld Flip Until KeyDown(1) End Function simpleCameraMovement(camera) If KeyDown(203) Then TurnEntity camera,0,1,0 If KeyDown(205) Then TurnEntity camera,0,-1,0 If KeyDown(200) Then MoveEntity camera,0,0,1 If KeyDown(208) Then MoveEntity camera,0,0,-1 If KeyDown(30) Then MoveEntity camera,0,1,0 If KeyDown(44) Then MoveEntity camera,0,-1,0 End Function </code> It works well on my PC and the mouse can be moved around the screen regardless of the camera's motion. |
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| cool it worked, but its not excately what I was looking for.. I want it to follow the terrain... |
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| Do you wish the mouse to be able to select points on the terrain or do you wish the mouse cursor to kind of act like a ball which rolls over the terrain in the direction the mouse moves.. |
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| want it to select sorry it took so long to reply, bad week :( okay little more detail about the editor.. its for a MMORPG, but I want to create the full world off of one program loading like 9 terrain areas at once this way I can edit them and align them correctly, then I want to save all the information into a world file like (*.rwf) then load it into the game but having the game do the samething by loadin about 9 sections at a time this way Im not using up as much memory, but the game looks fluid.. so right now Im starting with the Terrain part and once thats done I will make it where I can add entities and other information to the map.. if you may have anyother information you can provide for please drop me a email fbepyon@... or the same at MSN IM using the same email :P thanks |
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