gordonramp
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Posts posted by gordonramp
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This sounds great i was attracted to leadwerks from using lua with shiva, they provide a great demo level with basic documentation on its creation, well worth checking out. Being an artist / animator i'm sure learning about programing has contributed to many of my grey hairs. Seeing a few practical examples implemented and explained in a working environment can be all thats needed to get one started.
Yes, and it's no shame to copy and paste in order get something working. Like an artist who uses recycled materials to produce great works of art. It's just a way of accomplishing an end. Also some Language producers encourage copy and paste. The Gamecreators are in this category. They have a Snippets Forum, a Code Base and a Newcomers Corner. They understand how important it is to get people into their world and way of thinking. I remember laughing when I bought Dark Basic Classic and some example games accompanied it with the suggestion that they be hacked and torn apart so that purchasers could get the hang of how to do things. I think that was a great attitude.
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I recommend 3DWorld Studio. It's made by Leadwerks also and is excellent for making buildings etc. More detailed assets will need a modelling program like Milkshape3D or Blender.
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Your script works both ways for me.
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I think it's a cop-out to expect new 2.3 users to learn how to code the Leadwerks Engine in Lua by looking at old C++ Tutorials. What's needed are working examples in Lua. The 'Getting started with Lua Script' Tutorial is a good example of how they need to be although even that digresses into C++ at the end. Have a look at the number of posts on the Lua Forum compared to the C++ forum.. People are desperately trying to understand just the basics of the LE script only to find there is almost no documentation, only helpful Lua coders. Once again, we have the 'one man band' syndrome where promised Tutorials just aren't appearing because the one man is looking in other areas.
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i can do that right now by commenting out the CreateFramework()... it will load the new scene into the existing scene... so it appears that CreateFramework is freeing everything...
Macklebee, did you mean.. 'comment out FreeFramework(fw)' because when I do that for the second scene it loads and exits without an error. My only hope is that everything is in fact being deleted by CreateFramework() or Loadscene(), so that there is no performance hit down the track.
Update: There appears to be no performance loss when switching from scene to scene apart from the altering size of the scene. On to the next conundrum..Thanks
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Lumooga,
You may be correct but if I use the 2.3 'train' and 'tunnels' .sbx maps then the same thing occurs. The code has to be run from outside of the Scripting Editor for the Error to occur. As it would in a Game situation.
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Here is the complete working script.. It changes the Scene. Paste this into the Script Editor, Save it and close the Script Editor then double-click the saved file to run it. It runs Ok but when I move to another scene by pushing (F) then exiting, the Error occurs.
require("Scripts/constants/collision_const") require("Scripts/constants/engine_const") require("Scripts/LinkedList") require("Scripts/filesystem") require("Scripts/math/math") function round(num, idp) return tonumber(string.format("%." .. (idp or 0) .. "f", num)) end function playercreation() --Function to create a player controller and set camera variables controller=CreateController(1.8,0.45,0.25,45) controller:SetCollisionType(COLLISION_CHARACTER,0) controller:SetMass(10) if standalone==1 then controller:SetPosition(Vec3(-20,1,-5)) else controller:SetPosition(fw.main.camera.position) end camerapitch=fw.main.camera.rotation.x camerayaw=fw.main.camera.rotation.y-110 camera = fw.main.camera end BLEND_NONE=0 BLEND_ALPHA=1 if fw==nil then --we are not in Editor RegisterAbstractPath("") Graphics(1680,1050) fw=CreateFramework() scene=LoadScene("Maps/terrain_base.sbx") scene:SetCollisionType(COLLISION_SCENE) TFilter(1) AFilter(4) standalone=1 end dx=0.0 dy=0.0 camerapitch=0.0 camerayaw=0.0 move=0.0 strafe=0.0 playercreation()--Call the controller function HideMouse() MoveMouse(GraphicsWidth()/2,GraphicsHeight()/2) --position function DrawHUD(contr) SetBlend(BLEND_ALPHA) DrawText("position: "..round(contr.position.x,1)..","..round(contr.position.y,1)..","..round(contr.position.z,1),1,FontHeight()*1) --DrawText("rot: "..round(contr.rotation.x,3)..","..round(contr.rotation.y,3)..","..round(contr.rotation.z,3),1,FontHeight()*6) SetBlend(BLEND_NONE) end --main function while KeyHit(KEY_ESCAPE)==0 do jump=KeyHit(KEY_SPACE)*6.0 if controller:IsAirborne()==1 then jump=0 end local time = AppTime()/3200.0 local frame = time*(179.0-96.0)+96.0 frame=Clamp( frame, 96, 179 ) --Camera look gx=Round(GraphicsWidth()/2) gy=Round(GraphicsHeight()/2) dx=Curve((MouseX()-gx)/4.0,dx,3.0/AppSpeed()) dy=Curve((MouseY()-gy)/4.0,dy,3.0/AppSpeed()) MoveMouse(gx,gy) camerapitch=camerapitch+dy camerayaw=camerayaw-dx camerapitch=math.min(camerapitch,90) camerapitch=math.max(camerapitch,-89.99) fw.main.camera:SetRotationf(camerapitch,camerayaw,0,1) movespeed=4 movesmoothing=10 if controller:IsAirborne()==1 then movesmoothing=200 end --Player movement move=Curve( (KeyDown(KEY_W)-KeyDown(KEY_S))*movespeed,move,movesmoothing) strafe=Curve( (KeyDown(KEY_D)-KeyDown(KEY_A))*movespeed,strafe,movesmoothing) --Update controller controller:Update(camerayaw,move,strafe,jump,40,10) fw:Update() --Position camera camera:SetPositionf(controller.position.x,controller.position.y+0.8,controller.position.z,1) time=AppTime() fw:Render() DrawHUD(controller) --new Framework--------------------------------------------------------------------------------------------------- if KeyHit(KEY_F)==1 then FreeFramework(fw) fw=CreateFramework() SetGlobalObject("fw",fw) scene=LoadScene("Maps/terrain_base2.sbx") playercreation()-- call the controller function again to create new controller and camera variables end ------------------------------------------------------------------------------------------------------------------ Flip(0) end controller:Free() ShowMouse() -
I can't figure out why I always get this error when I exit my Lua script after running it through the Engine. Any ideas?
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Have you updated lately? The reason I ask is because my 'change a scene' code has developed an error on exit which wasn't there a week ago. And I updated a couple of times.
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macklebee to the rescue,
Nice, that works. As I thought, it was the way the controller code etc. was structured. Thanks, that's a big help.
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Aggror,
Ok, here is the basic Framework fp code that I am building on. It's on this code that I am trying lots of variations.. you should be able to load any map into it.. Note that the first scene is deleted and the new one loaded at the bottom of the main loop.
require("Scripts/constants/collision_const") require("Scripts/constants/engine_const") require("Scripts/LinkedList") require("Scripts/filesystem") require("Scripts/math/math") function round(num, idp) return tonumber(string.format("%." .. (idp or 0) .. "f", num)) end BLEND_NONE=0 BLEND_ALPHA=1 if fw==nil then --we are not in Editor RegisterAbstractPath("") Graphics(1680,1050) fw=CreateFramework() scene=LoadScene("Maps/terrain_base.sbx") scene:SetCollisionType(COLLISION_SCENE) TFilter(1) AFilter(4) standalone=1 end dx=0.0 dy=0.0 camerapitch=0.0 camerayaw=0.0 move=0.0 strafe=0.0 --Create a player controller controller=CreateController(1.8,0.45,0.25,45) controller:SetCollisionType(COLLISION_CHARACTER,0) controller:SetMass(10) if standalone==1 then controller:SetPosition(Vec3(-20,1,-5)) else controller:SetPosition(fw.main.camera.position) end camerapitch=fw.main.camera.rotation.x camerayaw=fw.main.camera.rotation.y-110 HideMouse() MoveMouse(GraphicsWidth()/2,GraphicsHeight()/2) local camera = fw.main.camera --position function DrawHUD(contr) SetBlend(BLEND_ALPHA) DrawText("position: "..round(contr.position.x,1)..","..round(contr.position.y,1)..","..round(contr.position.z,1),1,FontHeight()*1) --DrawText("rot: "..round(contr.rotation.x,3)..","..round(contr.rotation.y,3)..","..round(contr.rotation.z,3),1,FontHeight()*6) SetBlend(BLEND_NONE) end --main function while KeyHit(KEY_ESCAPE)==0 do jump=KeyHit(KEY_SPACE)*6.0 if controller:IsAirborne()==1 then jump=0 end local time = AppTime()/3200.0 local frame = time*(179.0-96.0)+96.0 frame=Clamp( frame, 96, 179 ) --Camera look gx=Round(GraphicsWidth()/2) gy=Round(GraphicsHeight()/2) dx=Curve((MouseX()-gx)/4.0,dx,3.0/AppSpeed()) dy=Curve((MouseY()-gy)/4.0,dy,3.0/AppSpeed()) MoveMouse(gx,gy) camerapitch=camerapitch+dy camerayaw=camerayaw-dx camerapitch=math.min(camerapitch,90) camerapitch=math.max(camerapitch,-89.99) fw.main.camera:SetRotationf(camerapitch,camerayaw,0,1) movespeed=4 movesmoothing=10 if controller:IsAirborne()==1 then movesmoothing=200 end --Player movement move=Curve( (KeyDown(KEY_W)-KeyDown(KEY_S))*movespeed,move,movesmoothing) strafe=Curve( (KeyDown(KEY_D)-KeyDown(KEY_A))*movespeed,strafe,movesmoothing) --Update controller controller:Update(camerayaw,move,strafe,jump,40,10) fw:Update() --Position camera camera:SetPositionf(controller.position.x,controller.position.y+0.8,controller.position.z,1) time=AppTime() fw:Render() DrawHUD(controller) --new Framework--------------------------------------------------------------------------------------------------- if KeyHit(KEY_F)==1 then FreeFramework(fw) fw=CreateFramework() SetGlobalObject("fw",fw) scene=LoadScene("Maps/terrain_base2.sbx") end ------------------------------------------------------------------------------------------------------------------ Flip(0) end controller:Free() ShowMouse()Yes, I have attempted any of the suggestions on this thread.
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Thanks guys, no improvement, I get the distinct impression that I'm not structuring the code correctly. This is just the sort of topic that really needs a tutorial, changing scenes is basic to any game.
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Rick,
When I try to reset the controller with
controller:SetPosition(Vec3(-20,1,-5))
I get an 'Access Violation'.
Aggror,
If I place that code within the main loop, nothing happens at all.
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Aggror,
That may be a solution but I'm currently unable to implement it within the Framework. I've tried all sorts of things. Like I said, the old scene removes and the new scene loads but but I'm stuck underneath it without movement.
VicToMeyeZR,
No change when I flip it.
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if KeyHit(KEY_F)==1 then FreeFramework(fw) fw=CreateFramework() SetGlobalObject("fw",fw) scene=LoadScene("Maps/newscene.sbx")Using the fpscontroller.lua code..
This deletes the old scene and loads the new. I have mouselook but seem to be stuck under the new scene with no movement.
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Fully supports Lua now
Where can I find the Lua source?
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I'm attempting to change a scene by loading a new one with LoadScene() and this seems to work but I can't find a command to remove the old scene. Is there one?
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In a FPController scene, how can I detect when I have touched or collided with a particular object so that an event can take place? Another way to describe it is.. How would I go about creating a hotspot?
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Yep, that's it. Thankyou Mack..
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Huh, when I call it I get this error..'attempt to call global'AppSetting'(a null value).
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Does anyone know what the Lua code for Full Screen is?
In BlitzMax it is..
Graphics(screenwidth,screenheight,Int(AppSetting("fullscreen"))*32,60,0)but there's nothing in the documentation yet for Lua.
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Data
in Programming
Here is some example code which writes and reads data to and from a text file. Open the ScriptEditor in the LE.SDK folder and place this code in it. Run it and a text file (my.txt) will be created in the same folder. Then the code will read the text file and write the contents to the screen. Note: If the Output content is changed, then the previous content in the text file is overwritten.
--Register abstract path RegisterAbstractPath("") --Set graphics mode if Graphics(1024,768)==0 then Notify("Failed to set graphics mode.",1) return end world=CreateWorld() if world==nil then Notify("Failed to initialize engine.",1) return end gbuffer=CreateBuffer(GraphicsWidth(),GraphicsHeight(),1+2+4+8) camera=CreateCamera() camera:SetPosition(Vec3(0,0,-2)) light=CreateSpotLight(10) light:SetRotation(Vec3(45,55,0)) light:SetPosition(Vec3(5,5,-5)) material=LoadMaterial("abstract::cobblestones.mat") mesh=CreateCube() mesh:Paint(material) ground=CreateCube() ground:SetScale(Vec3(10.0,1.0,10.0)) ground:SetPosition(Vec3(0.0,-2.0,0.0)) ground:Paint(material) light=CreateDirectionalLight() light:SetRotation(Vec3(45,45,45)) --------------------------------------------------------- --Create a text file and write data to it io.output(io.open("my.txt","w")) io.write("21") io.close() --------------------------------------------------------- while AppTerminate()==0 do mesh:Turn(Vec3(AppSpeed()*0.5,AppSpeed()*0.5,AppSpeed()*0.5)) UpdateAppTime() world:Update(AppSpeed()) SetBuffer(gbuffer) world:Render() SetBuffer(BackBuffer()) world:RenderLights(gbuffer) ---------------------------------------------------------- --Open the text file and write it's context to the screen file = io.open("my.txt","r") for line in file:lines() do DrawText(line,0,20) end file:close() ----------------------------------------------------------- DrawText(UPS(),0,0) Flip(0) end -
Data
in Programming
I added this Lua into the LE example1 and it runs with no errors but no text appears on the screen. Anyone have a clue as to why?
print(io.open("newinput", "w"))--write print(io.open("newinput", "r"))--read DrawText(newinput,0,10)--drawUpdate:
Don't bother.. I get it.
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Data
in Programming
I know this as a major topic and I'm probably not the best one to bring it up but I will anyway because everyone is going to have to look at it sooner or later. Josh has posted an input console and I'm sure it's not the only one. Now what to do with the data from that and other sources. Starting with simple solutions.. Is it possible to write to a text file and also read it using Lua from the LE. I come from DBPro and in that language it is. It's also possible to write to the Windows Registry. Then there's Xml, and .ini files or purpose built 3rd-parties like sqlite3. So has anyone been exploring this and come up with any simple examples of using Lua to write and read data for use in the LE?
Lua and LE
in Programming
Posted
Nice work Kevin Tillman.. in Max too.