Help creating a tile based game
BlitzMax Forums/BlitzMax Beginners Area/Help creating a tile based game
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| Hi all, As the title, I've been searching the forum and external sources for a few days for info and code snippets to help me on my way to create a tile based RPG. I wouldn't class myself as a noob when it comes to programming, I've punched out a few run-of-the-mill games but I've never attempted a tile-based game. I work best when I can see the basic working code/principle and break it down. Are there any links to posts on the forum with a working example and source code? I really need to know where to start and how to setup and handle the tiles? Even if there's a framework/engine that would help? Much appreciated :) Cheers, Sam |
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| In this post I helped someone with what sounds like a similar game. Here is the post with a working code sample, that might give you some ideas. You need to press enter to start it. http://blitzbasic.com/Community/posts.php?topic=90762#1033024 You could take a look at TileMax by _Skully http://tilemax.webs.com/ Last edited 2011 |
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| Although nowadays they aren't the most performing ones, they're still a good source of information, helping the novice to figure out what are the basic mechanics behind a tile-based visualization engine. Both engines come with an handy module+example written for Blitzmax. You can find them by scrolling the following urls: http://tilestudio.sourceforge.net/ http://tilemap.co.uk/mappy.php Tile Studio, IMHO, is very interesting to work on. ;-) |
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| when you say tile-based do you mean square tiles or iso? |
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| here is a link to a simple tile engine source code I made a few years back: http://www.blitzmax.com/codearcs/codearcs.php?code=2235 it is not much but it illustrate basic principles. Last edited 2011 |
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| The idea behind tilebased RPG's are pretty universal. Once you're familiar with BlitzMax you could best learn from other sources. I remember finding some GameDev articles extremely usefull, but can't find them atm... For handling the Tiles, just use a 2 dimensional array of integers, use a tilesheet where each frame represents a tile, and drawing the map gets easy. I believe writing a full featured Tilemap class yourself (probably multiple times) is a necessary experience for all 2D game programmers, you'll learn lots from it. |
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| @slenkar: I would love to make an iso-tile game, but I'm starting easy and going for the basic square tile game :) Thanks for the examples, they're very useful :) I've been thinking about how to go about generating and reading the tile maps...? (the examples created random tile maps) I'm downloading Tilestudio to see if I can figure out if it will do what I want it to do. Half the problem is I don't know what I want it to do :P |
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| Ok well I've knocked up a lil tile system from the examples, I've included the code (modified so it'll run out of the box :) If I've done anything wrong or there's a more efficient way, school me :P Something I need help with is how would I program the character to move on the tiles? Specifically, I want the character to move a tile at a time but with a smooth transition... does that make sense? Say a tile is 32px. If the character moves 32px every key hit it's too fast and jerky. I'm after a way to make the character keep moving to the next tile after the direction key press. Strict Graphics( 1024, 768 ) 'MAP VARIABLES Const tileSize = 32 Const mapWidth = 20 'width of map in tiles Const mapHeight = 20 'height of map in tiles Global map:TTile[,] = New TTile[ mapWidth, mapHeight ] 'creates a tile map mapWidth wide * mapHeight high 'TILE VARIABLES Global numOfTileBases = 1 Global allTileBases:TTileBase[] = New TTileBase[ numOfTileBases ] 'TYPES Type TTile Field X:Int Field Y:Int Field tileBase:TTileBase Global list:TList Global image:TImage Method render() tileBase.render( X, Y ) End Method Method update() render() End Method Function updateAllTiles() If Not list Return For Local t:TTile = EachIn list t.update() Next End Function Function createTile:TTile( x:Int, y:Int, tileBase:Int ) If Not list list = CreateList() Local t:TTile = New TTile list.AddLast( t ) t.X = x t.Y = y t.tileBase = allTileBases[ tileBase ] End Function End Type Type TTileBase Global image:TImage Method render( x:Int, y:Int ) 'DrawImage( image, tileXYtoPixelXY( x ), tileXYtoPixelXY( y ) ) SetColor( 75, 75, 75 ) DrawRect( tileXYtoPixelXY( x ), tileXYtoPixelXY( y ), tileSize - 1, tileSize - 1 ) SetColor( 255, 255, 255 ) End Method Function createTileBase:TTileBase( passable:Int ) Local tb:TTileBase = New TTileBase 'If Not image image = LoadImage( "images/grassimg.png" ) Return( tb ) End Function End Type Type TPlayer Field X:Float Field Y:Float Global list:TList Global image:TImage Method render() 'DrawImage( image, X, Y ) DrawRect( X, Y, tileSize, tileSize ) End Method Method update() render() 'dont want to be able to move diagonally If KeyDown( KEY_LEFT ) X:-1 Else If KeyDown( KEY_RIGHT ) X:+1 Else If KeyDown( KEY_DOWN ) Y:+1 Else If KeyDown( KEY_UP ) Y:-1 End If End Method Function updatePlayer() If Not list Return For Local p:TPlayer = EachIn list p.update() next End Function Function createPlayer() If Not list list = CreateList() Local p:TPlayer = New TPlayer list.AddLast( p ) p.X = ( mapWidth / 2 ) * tileSize p.Y = ( mapHeight / 2 ) * tileSize 'If Not image image = LoadImage( "images\playerimg.png" ) End Function End Type loadMap() TPlayer.createPlayer() SetOrigin( (1024/2)-(mapWidth/2)*tileSize, 768/2-(mapHeight/2)*tileSize ) 'centers map While Not KeyHit( KEY_ESCAPE ) Cls TTile.updateAllTiles() TPlayer.updatePlayer() Flip Wend 'FUNCTIONS Function loadMap() 'create map of tiles allTileBases[ 0 ] = TTileBase.createTileBase( Null ) For Local x:Int = 0 To ( mapWidth - 1 ) For Local y:Int = 0 To ( mapHeight - 1 ) map[ x, y ] = TTile.createTile( x, y, 0 ) Next Next End Function Function tileXYtoPixelXY( z:Int ) 'multiplies map x and y values by the tileSize Return( z * tileSize ) End Function Last edited 2011 |
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| To keep a character moving: use a timer, and don't control the x,y-coords directly from reading out the cursor keys, but let cursor keys set a walking state to 1, and a direction variable to the direction given with these cursors. As long as the state is 1, the player moves into the direction given by the direction variable. If the player has arrived onto the new tile, set the walking state to 0. With each timer tick you update the whole shebang.. |
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Simplified, but clear as a whistle.SuperStrict Graphics 640,480 Local px:Int=64,py:Int=64,direction:Int,walking:Int Local timer:ttimer=CreateTimer(30) Repeat WaitTimer(timer) ' scan the cursors ' If KeyDown(KEY_LEFT) If walking=0 direction=3;walking=1 ElseIf KeyDown(KEY_RIGHT) If walking=0 direction=1;walking=1 ElseIf KeyDown(KEY_UP) If walking=0 direction=0;walking=1 ElseIf KeyDown(KEY_DOWN) If walking=0 direction=2;walking=1 EndIf ' update player If walking Select direction Case 0 py:-2 Case 1 px:+2 Case 2 py:+2 Case 3 px:-2 End Select If px=(px/16)*16 And py=(py/16)*16 ' check whether the player is on a grid point walking=0 EndIf EndIf ' draw the whole shebang Cls ' blue grid SetColor 0,0,255 For Local y:Int=0 To 479 Step 16 DrawRect 0,y,640,1 Next For Local x:Int=0 To 639 Step 16 DrawRect x,0,1,480 Next ' yellow hero SetColor 255,255,0 DrawRect px,py,16,16 DrawText "U R D L Esc",2,2 Flip Until KeyHit(KEY_ESCAPE) End |
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| Thanks mate! |
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