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Copy pathRPG-2d-Template fixed screen.bb
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RPG-2d-Template fixed screen.bb
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AppTitle "Topdown RPG player map collision - cursor keys to move."
Graphics 640,480,16,2
SetBuffer BackBuffer()
Global mw = 30
Global mh = 20
Global tw = GraphicsWidth()/mw-1
Global th = GraphicsHeight()/mh-1
Global px = 0
Global py = 0
Global pw = tw
Global ph = th
Dim map(mw,mh)
Global mapim=CreateImage(GraphicsWidth(),GraphicsHeight())
readlevel()
drawlevel
While KeyDown(1) = False
Cls
moveplayer
playeritemcollision
; drawlevel
DrawImage mapim,0,0
drawplayer
Flip
Wend
End
Function moveplayer()
Local x=0
Local y=0
If KeyDown(200) ; up
y=-1
End If
If KeyDown(205) ; right
x=1
End If
If KeyDown(208) ; down
y=1
End If
If KeyDown(203) ; left
x=-1
End If
If px+x < 0 Then x=0
If px+x > mw*tw Then x=0
If py+y < 0 Then y=0
If py+y > mh*th Then y=0
If playermapcollision(px+x,py) = False
px=px+x
End If
If playermapcollision(px,py+y) = False
py=py+y
End If
End Function
Function playermapcollision(x1,y1)
Local cx=x1/tw
Local cy=y1/th
For y2=cy-1 To cy+1
For x2=cx-1 To cx+1
If x2>=0 And x2<=mw And y2>=0 And y2<=mh
If map(x2,y2) = 1 ; is the map around the player a 1 value
If RectsOverlap(x2*tw,y2*th,tw,th,x1,y1,pw,ph)
;
; Here the player is inside a wall
; a value 1 on the map
;
Return True
;
End If
End If
End If
Next
Next
; no collision occured
Return False
End Function
Function playeritemcollision()
Local cx=px/tw
Local cy=py/th
For y2=cy-1 To cy+1
For x2=cx-1 To cx+1
If x2>=0 And x2<=mw And y2>=0 And y2<=mh
If map(x2,y2) = 3 ; is the map around the player a 3 value
If RectsOverlap(x2*tw+8,y2*th+8,tw-16,th-16,px,py,pw,ph)
;
; Here the player touches a map item (3)
; We remove it from the map
;
map(x2,y2) = 0
updatelevel(x2,y2,0)
End If
End If
End If
Next
Next
End Function
Function drawplayer()
Color 0,0,255
Oval px,py,pw,ph
End Function
Function updatelevel(x,y,ind)
SetBuffer ImageBuffer(mapim)
If ind = 0
Color 0,0,0
Rect x*tw,y*th,tw,th
End If
If ind = 1
Color 255,255,255
Rect x*tw,y*th,tw,th,True
End If
If ind = 2
Color 0,255,0
x1=x*tw
y1=y*th
Line x1+tw/2,y1,x1+tw,y1+th
Line x1+tw,y1+th,x1,y1+th
Line x1,y1+th,x1+tw/2,y1
End If
If ind = 3
Color 200,180,10
Oval x*tw+4,y*th+4,tw-8,th-8
End If
SetBuffer BackBuffer()
End Function
Function drawlevel()
SetBuffer ImageBuffer(mapim)
Cls
For y=0 To mh-1
For x=0 To mw-1
If map(x,y) = 1
Color 255,255,255
Rect x*tw,y*th,tw,th,True
End If
If map(x,y) = 2
Color 0,255,0
x1=x*tw
y1=y*th
Line x1+tw/2,y1,x1+tw,y1+th
Line x1+tw,y1+th,x1,y1+th
Line x1,y1+th,x1+tw/2,y1
End If
If map(x,y) = 3
Color 200,180,10
Oval x*tw+4,y*th+4,tw-8,th-8
End If
Next
Next
SetBuffer BackBuffer()
End Function
Function readlevel(level=1)
Select level
Case 1
Restore level1
End Select
For y=0 To mh-1
For x=0 To mw-1
Read a
map(x,y) = a
Next
Next
End Function
.level1
Data 0,0,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
Data 0,0,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0
Data 1,0,0,0,0,0,0,1,0,0,1,3,3,1,0,0,0,0,0,0,0,0,0,0,0,1,3,3,0,0
Data 1,0,0,0,0,1,1,1,0,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,1,1,1,0,0
Data 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,2,0,0,0,0,1,1,1,1,0,0,0,0
Data 1,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,2,2,2,2,0,0,0,0,0,1,0,0,0,0
Data 1,1,1,1,0,0,2,2,0,0,1,0,0,0,0,2,2,2,2,2,0,0,0,0,0,1,0,0,0,0
Data 3,3,0,1,0,0,0,0,0,0,1,1,1,1,2,2,2,2,2,2,2,1,1,0,0,1,0,0,0,0
Data 3,3,0,1,0,0,0,0,0,0,1,0,0,0,2,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0
Data 3,3,0,1,0,0,1,2,2,0,1,0,0,0,2,2,2,0,0,2,2,2,0,0,0,0,0,0,0,0
Data 3,3,0,0,0,0,1,1,1,1,1,0,0,1,0,0,0,0,0,0,2,2,2,2,2,2,2,0,0,0
Data 0,0,0,1,0,0,1,0,0,0,0,0,0,1,1,0,0,0,1,0,0,2,2,2,2,2,0,0,0,0
Data 0,0,0,1,0,0,1,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0
Data 3,3,0,1,0,0,1,1,0,0,0,0,0,1,0,0,0,0,1,0,0,0,1,1,1,1,1,1,0,0
Data 1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,3,3,1,1,1,1,1,1,1,1,1,1,0,0
Data 1,1,1,1,1,1,1,0,0,0,2,2,2,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0
Data 1,1,1,1,0,0,0,0,2,2,2,2,2,2,0,0,0,0,0,0,0,0,1,1,1,1,1,1,3,0
Data 1,1,1,1,0,0,0,2,2,2,2,2,2,2,2,2,2,2,2,0,0,0,1,1,1,1,1,1,3,0
Data 0,0,0,0,0,0,2,2,2,2,2,2,2,2,2,2,2,2,2,0,0,0,1,1,1,1,1,1,0,0
Data 0,0,0,0,0,0,2,2,2,2,2,2,2,2,2,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0
.level2