Monkey-X - 2D Snake Style Water - code example

 'snake(style) 2d water  
 Import mojo  
   
 Global mapwidth:Int=200  
 Global mapheight:Int=100  
   
 Class watertest  
   Field map:Int[][]  
       Field w:Float,h:Float  
       Field tw:Float,th:Float  
      Field flowx:Int,flowy:Int  
      Field dir:String="down"  
   Method New()  
     Self.w = mymaptest.w*4  
     Self.h = mymaptest.h*4  
     Self.tw = 640/w  
     Self.th = 480/h  
   
     map = New Int[w][]  
     For Local i=0 Until w  
       map[i] = New Int[h]  
     Next  
     flowx = 10  
     flowy = 10  
           For Local y:Int=0 Until mymaptest.h  
           For Local x:Int=0 Until mymaptest.w  
                If mymaptest.map[x][y] = 1  
                For Local y2:Int=0 Until 4  
                For Local x2:Int=0 Until 4  
                     map[x*4+x2][y*4+y2] = 1  
                Next  
                Next  
                End If  
           Next  
           Next  
      End Method  
      Method update()  
           Local a:Bool=False  
           dir = "new"  
           If map[flowx][flowy+1] = 1 Then dir="down" ; a=True  
           If a=False And map[flowx+1][flowy] = 1 Then dir="right"; a=True  
           If a=False And map[flowx-1][flowy] = 1 Then dir="left" ; a = True  
           If a=False And map[flowx][flowy-1] = 1 Then dir="up" ; a = True  
             
           If dir="left" And map[flowx-2][flowy] = 10 Then map[flowx-2][flowy] = 1  
           If dir="right" And map[flowx+2][flowy] = 10 Then map[flowx+2][flowy] = 1            
   
             
   
           map[flowx][flowy]=10  
           If dir="left"   
           If map[flowx-1][flowy-1]=10 Then map[flowx-1][flowy-1]=1  
           Elseif dir="right"  
           If map[flowx+1][flowy-1]=10 Then map[flowx+1][flowy-1]=1  
           End If  
   
           Select dir  
                Case "up"  
                flowy-=1  
                Case "left"  
                flowx-=1  
                Case "right"  
                flowx+=1  
                Case "down"  
                flowy+=1                 
           End Select  
             
           If dir="new" Or Rnd(60*20) < 2 Then ' if the snake got stuck then  
                                ' find a new spot  
                dir = "done"  
                For Local y:Int=h-1 Until 1 Step -1  
                For Local x:Int=0 Until w  
                     If map[x][y] = 1 And map[x][y+1] = 10 Then  
                          flowx = x  
                          flowy = y  
                          Return  
                     End If  
                Next  
                Next  
           End If  
      End Method  
      Method draw()  
     For Local y:Int=0 Until h  
     For Local x:Int=0 Until w  
       Local x1:Float=x*tw  
       Local y1:Float=y*th  
       If map[x][y] = 10  
         SetColor 0,0,255          
         DrawRect x1,y1,tw+1,th+1  
       End If  
     Next  
     Next  
      End Method  
 End Class  
   
 Class maptest  
   Field tw:Float,th:Float  
   Field w:Int,h:Int  
   'bottom x and y contain the coords of the next  
   'shaft to be created. center of room last pass  
   Field bottomy:Int  
   Field bottomx:Int  
   Field map:Int[][]  
   Method New(w:Int,h:Int)  
     Self.w = w  
     Self.h = h  
     tw = DeviceWidth()/w  
     th = DeviceHeight()/h  
     map = New Int[w][]  
     For Local i=0 Until w  
       map[i] = New Int[h]  
     Next  
     drawmaprect(0,0,w-1,15)  
     For Local i=0 Until h  
       map[1][i] = 0  
       map[w-2][i] = 0  
     Next  
     ' x,y,number of tunnels>>  
     makemine(w/2,15,Rnd(1,3))  
     makemine(bottomx,bottomy,Rnd(1,3))  
     If bottomy<(Float(mapheight)/2)  
       makemine(bottomx,bottomy,Rnd(1,3))  
     End If  
   End Method  
   Method makemine(x:Int,y:Int,depth:Int)  
     Local vy:Int=y  
     For Local mydepth=0 Until depth  
       Local d1:Int=Rnd(8,16)'depth  
       tunneldown(x,y,d1)  
       y+=d1  
       Local d2:Int=Rnd(1,4)'direction  
       If d2=1 Then   
         sidetunnel(x,y,"left")  
       End If  
       If d2=2 Then   
         sidetunnel(x,y,"right")  
       End If  
       If d2=3 Then   
         sidetunnel(x,y,"left")  
         sidetunnel(x,y,"right")  
       End If  
     Next  
 '    For Local y1=vy Until bottomy+2  
  '      map[x][y1] = 2  
  '   Next  
   End Method  
   Method sidetunnel(x:Int,y:Int,d:String)  
     If d="left"  
       Local width:Int=Rnd(5,15)  
       drawmaprect(x-width+2,y,width,3)  
       Local roomw:Int=Rnd(5,15)  
       drawmaprect(x-width+2-roomw,y-1,roomw,5)  
       For Local x1=0 Until roomw/3  
         map[(x-width+2-roomw)+x1][y+4] = 3  
       Next  
       bottomx = x-width-(roomw/2)  
       bottomy = y  
     End If  
     If d="right"  
       Local width:Int=Rnd(5,15)  
       drawmaprect(x-1,y,width,3)  
       Local roomw:Int=Rnd(5,15)  
       drawmaprect(x+width,y-1,roomw,5)      
       For Local x1=roomw Until roomw/1.5 Step -1  
         map[(x+width)+x1][y+4] = 3  
       Next  
       bottomx = x+width+(roomw/2)        
       bottomy = y  
     End If  
   End Method  
   Method tunneldown(x:Int,y:Int,d:Int)  
     drawmaprect(x-2,y,4,d)  
   End Method  
   Method drawmaprect(x:Int,y:Int,w:Int,h:Int)  
     For Local y1=y To y+h  
     For Local x1=x To x+w  
       map[x1][y1] = 1  
     Next  
     Next      
   End Method  
   Method draw()  
     For Local y=0 Until h  
     For Local x=0 Until w  
       Local x1:Float=DeviceWidth()/Float(mapwidth)*Float(x)  
       Local y1:Float=DeviceHeight/Float(mapheight)*Float(y)  
       If map[x][y] = 1  
         SetColor 255,255,255          
         DrawRect x1,y1,tw+1,th+1  
       End If  
       If map[x][y] = 3  
         SetColor 200,200,10  
         DrawOval x1,y1,tw+1,th+1  
       End If        
     Next  
     Next  
   End Method  
 End Class  
   
 ' -----------------------------------------------------------------------------------------------  
   
 Global mymaptest:maptest  
 Global mywatertest:watertest  
   
 Class MyGame Extends App  
   Field nmap:Int=0  
   Method OnCreate()  
     Local date := GetDate()  
     Seed = date[5]  
     SetUpdateRate(60)  
     restartgame  
   End Method  
   Method OnUpdate()    
           For Local i:Int=0 Until 6  
     mywatertest.update()  
     Next        
           If levelfilled() Then restartgame  
   End Method  
   Method OnRender()  
     Cls 0,0,0   
     mymaptest.draw()  
     mywatertest.draw()  
     SetColor 255,255,0  
     DrawText "MonkeyX - 2d Mining map and snake style water.",20,0  
   End Method  
 End Class  
   
   
   
 Function Main()  
   New MyGame()  
 End Function  
   
 Function levelfilled:Bool()  
      If Rnd(120)>2 Then Return False  
      Local cnt:Int=0  
      For Local y:Int=10 Until 60  
      For Local x:Int= 0 Until mywatertest.w  
      If mywatertest.map[x][y] = 10 Then cnt+=1  
      If cnt>100 Then Return True  
      Next  
      Next  
   
      Return False  
 End Function  
   
 Function restartgame()  
   mymaptest = New maptest(mapwidth,mapheight)  
   mywatertest = New watertest()  
 End Function  
   
 Function distance:Int(x1:Int,y1:Int,x2:Int,y2:Int)  
   Return Abs(x2-x1)+Abs(y2-y1)  
 End Function   
     
 Function rectsoverlap:Bool(x1:Int, y1:Int, w1:Int, h1:Int, x2:Int, y2:Int, w2:Int, h2:Int)  
   If x1 >= (x2 + w2) Or (x1 + w1) <= x2 Then Return False  
   If y1 >= (y2 + h2) Or (y1 + h1) <= y2 Then Return False  
   Return True  
 End Function