Graphics 320,240,16,2
SetBuffer BackBuffer()
; read level data
Dim grid(15,15)
For j=0 To 15
For i=0 To 15
Read grid(i,j)
Next
Next
Dim rgb(9,2)
For i=1 To 9
Read rgb(i,0):Read rgb(i,1):Read rgb(i,2)
Next
Global px#=8.0
Global pz#=8.0
Global a#, pxold#=0.0, pzold#=0.0, premind#, info$
;__________________________MAINLOOP_________________________
While KeyDown(1)=0
Cls
If KeyDown(200) Then ; up
pxold=px
pzold=pz
px=px+Sin(a)/5.0
pz=pz+Cos(a)/5.0
sliding()
EndIf
If KeyDown(208) Then ; down
pxold=px
pzold=pz
px=px-Sin(a)/5.0
pz=pz-Cos(a)/5.0
sliding()
EndIf
a=(a-mxs#) Mod 360 ; use mouse to steer
raycast() ; do magic (well, actually not)
Color 0,255,0 ; map info onscreen...
Line (px*5-Sin(a)*2),(pz*5-Cos(a)*2),(px*5+Sin(a)*2),(pz*5+Cos(a)*2)
Color 255,0,0
Oval (px*5+(Sin(a)*2))-1,(pz*5+(Cos(a)*2))-1,2,2
Color 127,127,127
For j=0 To 15
For i=0 To 15
If grid(i,j)<>0
Rect i*5-3,j*5-3,5,5,0
EndIf
Next
Next
If info$<>"" Then Text GraphicsWidth()/2,GraphicsHeight()/2,info$,1,1
Flip
mxs#=MouseXSpeed()/3.0 ; used by steer
MoveMouse GraphicsWidth()/2,GraphicsHeight()/2
Wend
End
;________________________eo mainloop__________________________
Function sliding()
If grid(px,pz)<>0 ; sliding collision...
premind=px
px=pxold
If grid(px,pz)<>0
px=premind
pz=pzold
If grid(px,pz)<>0
px=pxold
EndIf
EndIf
EndIf
End Function
Function raycast()
For i=-160 To 159
rayx#=px
rayz#=pz
stepx#=Sin(a+0.125*i)/50.0 ; pretty small steps - would be way to slow on old machines
stepz#=Cos(a+0.125*i)/50.0
count=0
touched=0
While touched=0 And count<1000
rayx#=rayx+stepx
rayz#=rayz+stepz
count=count+1
If grid(rayx,rayz)<>0 Then
touched=grid(rayx,rayz)
EndIf
Wend
If touched<>0 Then
h#=7000.0/count
bright#=(h#+20.0)/127.0
If bright>1.0 Then bright=1.0
Color rgb(touched,0)*bright,rgb(touched,1)*bright,rgb(touched,2)*bright
Line 160-i,120-h,160-i,120+h
If touched=9
If info$=""
info$="Level Exit found!!! Congratzz!!!"
EndIf
EndIf
EndIf
Next
End Function
; map
Data 1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2
Data 2,9,0,0,1,0,0,0,0,0,0,0,0,0,0,1
Data 1,0,0,0,0,0,4,3,5,6,5,6,0,0,0,2
Data 2,0,1,3,4,2,2,0,0,0,0,2,3,0,0,1
Data 1,2,1,0,0,0,2,1,4,0,0,1,2,2,0,2
Data 2,0,0,0,4,0,0,0,7,0,0,0,1,0,0,1
Data 1,0,8,4,3,0,0,0,0,0,0,0,1,2,0,2
Data 2,0,7,0,0,0,0,0,0,4,5,4,1,0,0,1
Data 1,0,6,0,0,1,0,0,0,1,0,0,2,2,0,2
Data 2,0,5,1,2,1,3,0,1,1,0,0,0,0,0,1
Data 1,0,4,0,0,0,0,0,2,4,2,4,2,2,0,2
Data 2,0,3,1,0,0,0,0,0,0,3,0,0,1,0,1
Data 1,0,2,1,1,0,0,0,0,0,0,0,0,1,0,2
Data 2,0,1,2,3,4,5,4,5,4,5,5,6,3,0,1
Data 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2
Data 2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1
; wall colors: 1,2,3...
Data 127,127,255
Data 64,64,255
Data 255,127,255
Data 255,0,0
Data 0,255,0
Data 0,0,255
Data 255,0,255
Data 0,255,255
Data 255,255,0
Data 255,255,255 |
