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MapSystem.bb
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Type Materials
Field name$
Field Diff
Field Bump
Field StepSound%
End Type
Function LoadMaterials(file$)
CatchErrors("Uncaught (LoadMaterials)")
;If Not BumpEnabled Then Return
Local TemporaryString$
Local mat.Materials = Null
Local StrTemp$ = ""
Local f = OpenFile(file)
While Not Eof(f)
TemporaryString = Trim(ReadLine(f))
If Left(TemporaryString,1) = "[" Then
TemporaryString = Mid(TemporaryString, 2, Len(TemporaryString) - 2)
mat.Materials = New Materials
mat\name = Lower(TemporaryString)
If BumpEnabled Then
StrTemp = GetINIString(file, TemporaryString, "bump")
If StrTemp <> "" Then
mat\Bump = LoadTexture_Strict(StrTemp)
TextureBlend mat\Bump, 6
TextureBumpEnvMat mat\Bump,0,0,-0.012
TextureBumpEnvMat mat\Bump,0,1,-0.012
TextureBumpEnvMat mat\Bump,1,0,0.012
TextureBumpEnvMat mat\Bump,1,1,0.012
TextureBumpEnvOffset mat\Bump,0.5
TextureBumpEnvScale mat\Bump,1.0
EndIf
EndIf
mat\StepSound = (GetINIInt(file, TemporaryString, "stepsound")+1)
EndIf
Wend
CloseFile f
CatchErrors("LoadMaterials")
End Function
Function LoadWorld(file$, rt.RoomTemplates)
Local map=LoadAnimMesh_Strict(file)
If Not map Then Return
Local x#,y#,z#,i%,c%
Local mat.Materials
Local world=CreatePivot()
Local meshes=CreatePivot(world)
Local renderbrushes=CreateMesh(world)
Local collisionbrushes=CreatePivot(world)
;Local pointentities=CreatePivot(world)
;Local solidentities=CreatePivot(world)
EntityType collisionbrushes,HIT_MAP
For c=1 To CountChildren(map)
Local node=GetChild(map,c)
Local classname$=Lower(KeyValue(node,"classname"))
Select classname
;===============================================================================
;Map Geometry
;===============================================================================
Case "mesh"
EntityParent node,meshes
If KeyValue(node,"disablecollisions")<>1 Then
EntityType node,HIT_MAP
EntityPickMode node, 2
EndIf
c=c-1
;EntityType node,HIT_MAP
Case "brush"
RotateMesh node,EntityPitch(node),EntityYaw(node),EntityRoll(node)
PositionMesh node,EntityX(node),EntityY(node),EntityZ(node)
AddMesh node,renderbrushes
EntityAlpha node,0
EntityType node,HIT_MAP
EntityAlpha node,0
EntityParent node,collisionbrushes
EntityPickMode node, 2
c=c-1
;===============================================================================
;Solid Entities
;===============================================================================
Case "item"
;name$ = KeyValue(node,"name","")
;tempname$ = KeyValue(node,"tempname","")
;CreateItem(name,tempname,EntityX(node)*RoomScale,EntityY(node)*RoomScale,EntityZ(node)*RoomScale)
Case "screen"
x# = EntityX(node)*RoomScale
y# = EntityY(node)*RoomScale
z# = EntityZ(node)*RoomScale
If x<>0 Or y<>0 Or z<>0 Then
Local ts.TempScreens = New TempScreens
ts\x = x
ts\y = y
ts\z = z
ts\imgpath = KeyValue(node,"imgpath","")
ts\roomtemplate = rt
EndIf
Case "waypoint"
x# = EntityX(node)*RoomScale
y# = EntityY(node)*RoomScale
z# = EntityZ(node)*RoomScale
Local w.TempWayPoints = New TempWayPoints
w\roomtemplate = rt
w\x = x
w\y = y
w\z = z
;EntityParent (w\obj, collisionbrushes)
Case "light"
x# = EntityX(node)*RoomScale
y# = EntityY(node)*RoomScale
z# = EntityZ(node)*RoomScale
If x<>0 Or y<>0 Or z<>0 Then
range# = Float(KeyValue(node,"range","1"))/2000.0
lcolor$=KeyValue(node,"color","255 255 255")
intensity# = Min(Float(KeyValue(node,"intensity","1.0"))*0.8,1.0)
r=Int(Piece(lcolor,1," "))*intensity
g=Int(Piece(lcolor,2," "))*intensity
b=Int(Piece(lcolor,3," "))*intensity
AddTempLight(rt, x,y,z, 2, range, r,g,b)
EndIf
Case "spotlight"
x# = EntityX(node)*RoomScale
y# = EntityY(node)*RoomScale
z# = EntityZ(node)*RoomScale
If x<>0 Or y<>0 Or z<>0 Then
range# = Float(KeyValue(node,"range","1"))/700.0
lcolor$=KeyValue(node,"color","255 255 255")
intensity# = Min(Float(KeyValue(node,"intensity","1.0"))*0.8,1.0)
r=Int(Piece(lcolor,1," "))*intensity
g=Int(Piece(lcolor,2," "))*intensity
b=Int(Piece(lcolor,3," "))*intensity
Local lt.LightTemplates = AddTempLight(rt, x,y,z, 3, range, r,g,b)
angles$=KeyValue(node,"angles","0 0 0")
pitch#=Piece(angles,1," ")
yaw#=Piece(angles,2," ")
lt\pitch = pitch
lt\yaw = yaw
lt\innerconeangle = Int(KeyValue(node,"innerconeangle",""))
lt\outerconeangle = Int(KeyValue(node,"outerconeangle",""))
EndIf
Case "soundemitter"
For i = 0 To 3
If rt\TempSoundEmitter[i]=0 Then
rt\TempSoundEmitterX[i]=EntityX(node)*RoomScale
rt\TempSoundEmitterY[i]=EntityY(node)*RoomScale
rt\TempSoundEmitterZ[i]=EntityZ(node)*RoomScale
rt\TempSoundEmitter[i]=Int(KeyValue(node,"sound","0"))
rt\TempSoundEmitterRange[i]=Float(KeyValue(node,"range","1"))
Exit
EndIf
Next
;Invisible collision brush
Case "field_hit"
EntityParent node,collisionbrushes
EntityType node,HIT_MAP
EntityAlpha node,0
c=c-1
;===============================================================================
;Point Entities
;===============================================================================
;Camera start position point entity
Case "playerstart"
angles$=KeyValue(node,"angles","0 0 0")
pitch#=Piece(angles,1," ")
yaw#=Piece(angles,2," ")
roll#=Piece(angles,3," ")
If cam Then
PositionEntity cam,EntityX(node),EntityY(node),EntityZ(node)
RotateEntity cam,pitch,yaw,roll
EndIf
End Select
Next
;If BumpEnabled Then
;
; For i = 1 To CountSurfaces(renderbrushes)
; sf = GetSurface(renderbrushes,i)
; b = GetSurfaceBrush( sf )
; t = GetBrushTexture(b, 1)
; texname$ = StripPath(TextureName(t))
;
; For mat.Materials = Each Materials
; If texname = mat\name Then
; If mat\Bump <> 0 Then
; t1 = GetBrushTexture(b,0)
;
; BrushTexture b, t1, 0, 0 ;light map
; BrushTexture b, mat\Bump, 0, 1 ;bump
; BrushTexture b, t, 0, 2 ;diff
;
; PaintSurface sf,b
;
; If StripPath(TextureName(t1)) <> "" Then FreeTexture t1
;
; ;If t1<>0 Then FreeTexture t1
; ;If t2 <> 0 Then FreeTexture t2
; EndIf
; Exit
; EndIf
; Next
;
; FreeTexture t
; FreeBrush b
;
; Next
;
;EndIf
EntityFX renderbrushes, 1
FreeEntity map
Return world
End Function
;RMESH STUFF;;;;
Function StripFilename$(file$)
Local mi$=""
Local lastSlash%=0
If Len(file)>0
For i%=1 To Len(file)
mi=Mid(file$,i,1)
If mi="\" Or mi="/" Then
lastSlash=i
EndIf
Next
EndIf
Return Left(file,lastSlash)
End Function
Function GetTextureFromCache%(name$)
For tc.Materials=Each Materials
If tc\name = name Then Return tc\Diff
Next
Return 0
End Function
Function GetBumpFromCache%(name$)
For tc.Materials=Each Materials
If tc\name = name Then Return tc\Bump
Next
Return 0
End Function
Function GetCache.Materials(name$)
For tc.Materials=Each Materials
If tc\name = name Then Return tc
Next
Return Null
End Function
Function AddTextureToCache(texture%)
Local tc.Materials=GetCache(StripPath(TextureName(texture)))
If tc.Materials=Null Then
tc.Materials=New Materials
tc\name=StripPath(TextureName(texture))
If BumpEnabled Then
Local temp$=GetINIString("Data\materials.ini",tc\name,"bump")
If temp<>"" Then
tc\Bump=LoadTexture_Strict(temp)
TextureBlend tc\Bump,6
TextureBumpEnvMat tc\Bump,0,0,-0.012
TextureBumpEnvMat tc\Bump,0,1,-0.012
TextureBumpEnvMat tc\Bump,1,0,0.012
TextureBumpEnvMat tc\Bump,1,1,0.012
TextureBumpEnvOffset tc\Bump,0.5
TextureBumpEnvScale tc\Bump,1.0
Else
tc\Bump=0
EndIf
EndIf
tc\Diff=0
EndIf
If tc\Diff=0 Then tc\Diff=texture
End Function
Function ClearTextureCache()
For tc.Materials=Each Materials
If tc\Diff<>0 Then FreeTexture tc\Diff
If tc\Bump<>0 Then FreeTexture tc\Bump
Delete tc
Next
End Function
Function FreeTextureCache()
For tc.Materials=Each Materials
If tc\Diff<>0 Then FreeTexture tc\Diff
If tc\Bump<>0 Then FreeTexture tc\Bump
tc\Diff = 0 : tc\Bump = 0
Next
End Function
Function LoadRMesh(file$,rt.RoomTemplates)
CatchErrors("Uncaught (LoadRMesh)")
;generate a texture made of white
Local blankTexture%
blankTexture=CreateTexture(4,4,1,1)
ClsColor 255,255,255
SetBuffer TextureBuffer(blankTexture)
Cls
SetBuffer BackBuffer()
Local pinkTexture%
pinkTexture=CreateTexture(4,4,1,1)
ClsColor 255,255,255
SetBuffer TextureBuffer(pinkTexture)
Cls
SetBuffer BackBuffer()
ClsColor 0,0,0
;read the file
Local f%=ReadFile(file)
Local i%,j%,k%,x#,y#,z#,yaw#
Local vertex%
Local temp1i%,temp2i%,temp3i%
Local temp1#,temp2#,temp3#
Local temp1s$, temp2s$
Local collisionMeshes% = CreatePivot()
Local hasTriggerBox% = False
For i=0 To 3 ;reattempt up to 3 times
If f=0 Then
f=ReadFile(file)
Else
Exit
EndIf
Next
If f=0 Then RuntimeError "Error reading file "+Chr(34)+file+Chr(34)
Local isRMesh$ = ReadString(f)
If isRMesh$="RoomMesh"
;Continue
ElseIf isRMesh$="RoomMesh.HasTriggerBox"
hasTriggerBox% = True
Else
RuntimeError Chr(34)+file+Chr(34)+" is Not RMESH ("+isRMesh+")"
EndIf
file=StripFilename(file)
Local count%,count2%
;drawn meshes
Local Opaque%,Alpha%
Opaque=CreateMesh()
Alpha=CreateMesh()
count = ReadInt(f)
Local childMesh%
Local surf%,tex%[2],brush%
Local isAlpha%
Local u#,v#
For i=1 To count ;drawn mesh
childMesh=CreateMesh()
surf=CreateSurface(childMesh)
brush=CreateBrush()
tex[0]=0 : tex[1]=0
isAlpha=0
For j=0 To 1
temp1i=ReadByte(f)
If temp1i<>0 Then
temp1s=ReadString(f)
tex[j]=GetTextureFromCache(temp1s)
If tex[j]=0 Then ;texture is not in cache
Select True
Case temp1i<3
tex[j]=LoadTexture(file+temp1s,1)
Default
tex[j]=LoadTexture(file+temp1s,3)
End Select
If tex[j]<>0 Then
If temp1i=1 Then TextureBlend tex[j],5
If Instr(Lower(temp1s),"_lm")<>0 Then
TextureBlend tex[j],3
EndIf
AddTextureToCache(tex[j])
EndIf
EndIf
If tex[j]<>0 Then
isAlpha=2
If temp1i=3 Then isAlpha=1
TextureCoords tex[j],1-j
EndIf
EndIf
Next
If isAlpha=1 Then
If tex[1]<>0 Then
TextureBlend tex[1],2
BrushTexture brush,tex[1],0,0
Else
BrushTexture brush,blankTexture,0,0
EndIf
Else
If tex[0]<>0 And tex[1]<>0 Then
bumptex% = GetBumpFromCache(StripPath(TextureName(tex[1])))
;If bumptex<>0 Then
; DebugLog StripPath(TextureName(bumptex))
; Stop
;EndIf
For j=0 To 1
BrushTexture brush,tex[j],0,j+1+(bumptex<>0)
Next
BrushTexture brush,AmbientLightRoomTex,0
If (bumptex<>0) Then
BrushTexture brush,bumptex,0,1
EndIf
Else
For j=0 To 1
If tex[j]<>0 Then
BrushTexture brush,tex[j],0,j
Else
BrushTexture brush,blankTexture,0,j
EndIf
Next
EndIf
EndIf
surf=CreateSurface(childMesh)
If isAlpha>0 Then PaintSurface surf,brush
FreeBrush brush : brush = 0
count2=ReadInt(f) ;vertices
For j%=1 To count2
;world coords
x=ReadFloat(f) : y=ReadFloat(f) : z=ReadFloat(f)
vertex=AddVertex(surf,x,y,z)
;texture coords
For k%=0 To 1
u=ReadFloat(f) : v=ReadFloat(f)
VertexTexCoords surf,vertex,u,v,0.0,k
Next
;colors
temp1i=ReadByte(f)
temp2i=ReadByte(f)
temp3i=ReadByte(f)
VertexColor surf,vertex,temp1i,temp2i,temp3i,1.0
Next
count2=ReadInt(f) ;polys
For j%=1 To count2
temp1i = ReadInt(f) : temp2i = ReadInt(f) : temp3i = ReadInt(f)
AddTriangle(surf,temp1i,temp2i,temp3i)
Next
If isAlpha=1 Then
AddMesh childMesh,Alpha
EntityAlpha childMesh,0.0
Else
AddMesh childMesh,Opaque
EntityParent childMesh,collisionMeshes
EntityAlpha childMesh,0.0
EntityType childMesh,HIT_MAP
EntityPickMode childMesh,2
;make collision double-sided
Local flipChild% = CopyMesh(childMesh)
FlipMesh(flipChild)
AddMesh flipChild,childMesh
FreeEntity flipChild
EndIf
Next
Local hiddenMesh%
hiddenMesh=CreateMesh()
count=ReadInt(f) ;invisible collision mesh
For i%=1 To count
surf=CreateSurface(hiddenMesh)
count2=ReadInt(f) ;vertices
For j%=1 To count2
;world coords
x=ReadFloat(f) : y=ReadFloat(f) : z=ReadFloat(f)
vertex=AddVertex(surf,x,y,z)
Next
count2=ReadInt(f) ;polys
For j%=1 To count2
temp1i = ReadInt(f) : temp2i = ReadInt(f) : temp3i = ReadInt(f)
AddTriangle(surf,temp1i,temp2i,temp3i)
AddTriangle(surf,temp1i,temp3i,temp2i)
Next
Next
;trigger boxes
If hasTriggerBox
DebugLog "TriggerBoxEnable"
rt\TempTriggerboxAmount = ReadInt(f)
For tb = 0 To rt\TempTriggerboxAmount-1
rt\TempTriggerbox[tb] = CreateMesh(rt\obj)
count = ReadInt(f)
For i%=1 To count
surf=CreateSurface(rt\TempTriggerbox[tb])
count2=ReadInt(f)
For j%=1 To count2
x=ReadFloat(f) : y=ReadFloat(f) : z=ReadFloat(f)
vertex=AddVertex(surf,x,y,z)
Next
count2=ReadInt(f)
For j%=1 To count2
temp1i = ReadInt(f) : temp2i = ReadInt(f) : temp3i = ReadInt(f)
AddTriangle(surf,temp1i,temp2i,temp3i)
AddTriangle(surf,temp1i,temp3i,temp2i)
Next
Next
rt\TempTriggerboxName[tb] = ReadString(f)
Next
EndIf
count=ReadInt(f) ;point entities
For i%=1 To count
temp1s=ReadString(f)
Select temp1s
Case "screen"
temp1=ReadFloat(f)*RoomScale
temp2=ReadFloat(f)*RoomScale
temp3=ReadFloat(f)*RoomScale
temp2s$ =ReadString(f)
If temp1<>0 Or temp2<>0 Or temp3<>0 Then
Local ts.TempScreens = New TempScreens
ts\x = temp1
ts\y = temp2
ts\z = temp3
ts\imgpath = temp2s
ts\roomtemplate = rt
EndIf
Case "waypoint"
temp1=ReadFloat(f)*RoomScale
temp2=ReadFloat(f)*RoomScale
temp3=ReadFloat(f)*RoomScale
Local w.TempWayPoints = New TempWayPoints
w\roomtemplate = rt
w\x = temp1
w\y = temp2
w\z = temp3
Case "light"
temp1=ReadFloat(f)*RoomScale
temp2=ReadFloat(f)*RoomScale
temp3=ReadFloat(f)*RoomScale
If temp1<>0 Or temp2<>0 Or temp3<>0 Then
range# = ReadFloat(f)/2000.0
lcolor$=ReadString(f)
intensity# = Min(ReadFloat(f)*0.8,1.0)
r%=Int(Piece(lcolor,1," "))*intensity
g%=Int(Piece(lcolor,2," "))*intensity
b%=Int(Piece(lcolor,3," "))*intensity
AddTempLight(rt, temp1,temp2,temp3, 2, range, r,g,b)
Else
ReadFloat(f) : ReadString(f) : ReadFloat(f)
EndIf
Case "spotlight"
temp1=ReadFloat(f)*RoomScale
temp2=ReadFloat(f)*RoomScale
temp3=ReadFloat(f)*RoomScale
If temp1<>0 Or temp2<>0 Or temp3<>0 Then
range# = ReadFloat(f)/2000.0
lcolor$=ReadString(f)
intensity# = Min(ReadFloat(f)*0.8,1.0)
r%=Int(Piece(lcolor,1," "))*intensity
g%=Int(Piece(lcolor,2," "))*intensity
b%=Int(Piece(lcolor,3," "))*intensity
Local lt.LightTemplates = AddTempLight(rt, temp1,temp2,temp3, 2, range, r,g,b)
angles$=ReadString(f)
pitch#=Piece(angles,1," ")
yaw#=Piece(angles,2," ")
lt\pitch = pitch
lt\yaw = yaw
lt\innerconeangle = ReadInt(f)
lt\outerconeangle = ReadInt(f)
Else
ReadFloat(f) : ReadString(f) : ReadFloat(f) : ReadString(f) : ReadInt(f) : ReadInt(f)
EndIf
Case "soundemitter"
temp1i=0
For j = 0 To MaxRoomEmitters-1
If rt\TempSoundEmitter[j]=0 Then
rt\TempSoundEmitterX[j]=ReadFloat(f)*RoomScale
rt\TempSoundEmitterY[j]=ReadFloat(f)*RoomScale
rt\TempSoundEmitterZ[j]=ReadFloat(f)*RoomScale
rt\TempSoundEmitter[j]=ReadInt(f)
rt\TempSoundEmitterRange[j]=ReadFloat(f)
temp1i=1
Exit
EndIf
Next
If temp1i=0 Then
ReadFloat(f)
ReadFloat(f)
ReadFloat(f)
ReadInt(f)
ReadFloat(f)
EndIf
Case "playerstart"
temp1=ReadFloat(f) : temp2=ReadFloat(f) : temp3=ReadFloat(f)
angles$=ReadString(f)
pitch#=Piece(angles,1," ")
yaw#=Piece(angles,2," ")
roll#=Piece(angles,3," ")
If cam Then
PositionEntity cam,temp1,temp2,temp3
RotateEntity cam,pitch,yaw,roll
EndIf
Case "model"
file = ReadString(f)
If file<>""
Local model = CreatePropObj("GFX\Map\Props\"+file);LoadMesh("GFX\Map\Props\"+file)
temp1=ReadFloat(f) : temp2=ReadFloat(f) : temp3=ReadFloat(f)
PositionEntity model,temp1,temp2,temp3
temp1=ReadFloat(f) : temp2=ReadFloat(f) : temp3=ReadFloat(f)
RotateEntity model,temp1,temp2,temp3
temp1=ReadFloat(f) : temp2=ReadFloat(f) : temp3=ReadFloat(f)
ScaleEntity model,temp1,temp2,temp3
EntityParent model,Opaque
EntityType model,HIT_MAP
EntityPickMode model,2
Else
DebugLog "file = 0"
temp1=ReadFloat(f) : temp2=ReadFloat(f) : temp3=ReadFloat(f)
DebugLog temp1+", "+temp2+", "+temp3
;Stop
EndIf
End Select
Next
Local obj%
temp1i=CopyMesh(Alpha)
FlipMesh temp1i
AddMesh temp1i,Alpha
FreeEntity temp1i
If brush <> 0 Then FreeBrush brush
AddMesh Alpha,Opaque
FreeEntity Alpha
EntityFX Opaque,3
EntityAlpha hiddenMesh,0.0
EntityAlpha Opaque,1.0
;EntityType Opaque,HIT_MAP
EntityType hiddenMesh,HIT_MAP
FreeTexture blankTexture
;AddMesh hiddenMesh,BigRoomMesh
obj=CreatePivot()
CreatePivot(obj) ;skip "meshes" object
EntityParent Opaque,obj
EntityParent hiddenMesh,obj
CreatePivot(obj) ;skip "pointentites" object
CreatePivot(obj) ;skip "solidentites" object
EntityParent collisionMeshes,obj
CloseFile f
CatchErrors("LoadRMesh")
Return obj%
End Function
;-----------;;;;
Function StripPath$(file$)
Local name$=""
If Len(file$)>0
For i=Len(file$) To 1 Step -1
mi$=Mid$(file$,i,1)
If mi$="\" Or mi$="/" Then Return name$
name$=mi$+name$
Next
EndIf
Return name$
End Function
Function Piece$(s$,entry,char$=" ")
While Instr(s,char+char)
s=Replace(s,char+char,char)
Wend
For n=1 To entry-1
p=Instr(s,char)
s=Right(s,Len(s)-p)
Next
p=Instr(s,char)
If p<1
a$=s
Else
a=Left(s,p-1)
EndIf
Return a
End Function
Function KeyValue$(entity,key$,defaultvalue$="")
properties$=EntityName(entity)
properties$=Replace(properties$,Chr(13),"")
key$=Lower(key)
Repeat
p=Instr(properties,Chr(10))
If p Then test$=(Left(properties,p-1)) Else test=properties
testkey$=Piece(test,1,"=")
testkey=Trim(testkey)
testkey=Replace(testkey,Chr(34),"")
testkey=Lower(testkey)
If testkey=key Then
value$=Piece(test,2,"=")
value$=Trim(value$)
value$=Replace(value$,Chr(34),"")
Return value
EndIf
If Not p Then Return defaultvalue$
properties=Right(properties,Len(properties)-p)
Forever
End Function
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;Forest gen consts
Const gridsize% = 10
Const deviation_chance% = 40 ;out of 100
Const branch_chance% = 65
Const branch_max_life% = 4
Const branch_die_chance% = 18
Const max_deviation_distance% = 3
Const return_chance% = 27
Const center = 5 ;(gridsize-1) / 2
Include "Drawportals.bb"
Type Forest
Field TileMesh%[6]
Field DetailMesh%[6]
Field TileTexture%[10]
Field grid%[(gridsize*gridsize)+11]
Field TileEntities%[(gridsize*gridsize)+1]
Field Forest_Pivot%
Field Door%[2]
Field DetailEntities%[2]
Field ID%
End Type
Function move_forward%(dir%,pathx%,pathy%,retval%=0)
;move 1 unit along the grid in the designated direction
If dir = 1 Then
If retval=0 Then
Return pathx
Else
Return pathy+1
EndIf
EndIf
If retval=0 Then
Return pathx-1+dir
Else
Return pathy
EndIf
End Function
Function chance%(chanc%)
;perform a chance given a probability
Return (Rand(0,100)<=chanc)
End Function
Function turn_if_deviating%(max_deviation_distance_%,pathx%,center_%,dir%,retval%=0)
;check if deviating and return the answer. if deviating, turn around
Local current_deviation% = center_ - pathx
Local deviated% = False
If (dir = 0 And current_deviation >= max_deviation_distance_) Or (dir = 2 And current_deviation <= -max_deviation_distance_) Then
dir = (dir + 2) Mod 4
deviated = True
EndIf
If retval=0 Then Return dir Else Return deviated
End Function
Function GenForestGrid(fr.Forest)
CatchErrors("Uncaught (GenForestGrid)")
fr\ID=LastForestID+1
LastForestID=LastForestID+1
Local door1_pos%,door2_pos%
Local i%,j%
door1_pos=Rand(3,7)
door2_pos=Rand(3,7)
;clear the grid
For i=0 To gridsize-1
For j=0 To gridsize-1
fr\grid[(j*gridsize)+i]=0
Next
Next
;set the position of the concrete and doors
;For i=0 To gridsize-1
; fr\grid[i]=2
; fr\grid[((gridsize-1)*gridsize)+i]=2
;Next
fr\grid[door1_pos]=3
fr\grid[((gridsize-1)*gridsize)+door2_pos]=3
;generate the path
Local pathx = door2_pos
Local pathy = 1
Local dir = 1 ;0 = left, 1 = up, 2 = right
fr\grid[((gridsize-1-pathy)*gridsize)+pathx] = 1
Local deviated%
While pathy < gridsize -4
If dir = 1 Then ;determine whether to go forward or to the side
If chance(deviation_chance) Then
;pick a branch direction
dir = 2 * Rand(0,1)
;make sure you have not passed max side distance
dir = turn_if_deviating(max_deviation_distance,pathx,center,dir)
deviated = turn_if_deviating(max_deviation_distance,pathx,center,dir,1)
If deviated Then fr\grid[((gridsize-1-pathy)*gridsize)+pathx]=1
pathx=move_forward(dir,pathx,pathy)
pathy=move_forward(dir,pathx,pathy,1)
EndIf
Else
;we are going to the side, so determine whether to keep going or go forward again
dir = turn_if_deviating(max_deviation_distance,pathx,center,dir)
deviated = turn_if_deviating(max_deviation_distance,pathx,center,dir,1)
If deviated Or chance(return_chance) Then dir = 1
pathx=move_forward(dir,pathx,pathy)
pathy=move_forward(dir,pathx,pathy,1)
;if we just started going forward go twice so as to avoid creating a potential 2x2 line
If dir=1 Then
fr\grid[((gridsize-1-pathy)*gridsize)+pathx]=1
pathx=move_forward(dir,pathx,pathy)
pathy=move_forward(dir,pathx,pathy,1)
EndIf
EndIf
;add our position to the grid
fr\grid[((gridsize-1-pathy)*gridsize)+pathx]=1
Wend
;finally, bring the path back to the door now that we have reached the end
dir = 1
While pathy < gridsize-2
pathx=move_forward(dir,pathx,pathy)
pathy=move_forward(dir,pathx,pathy,1)
fr\grid[((gridsize-1-pathy)*gridsize)+pathx]=1
Wend
If pathx<>door1_pos Then
dir=0
If door1_pos>pathx Then dir=2
While pathx<>door1_pos
pathx=move_forward(dir,pathx,pathy)
pathy=move_forward(dir,pathx,pathy,1)
fr\grid[((gridsize-1-pathy)*gridsize)+pathx]=1
Wend
EndIf
;attempt to create new branches
Local new_y%,temp_y%,new_x%
Local branch_type%,branch_pos%
new_y=-3 ;used for counting off; branches will only be considered once every 4 units so as to avoid potentially too many branches
While new_y<gridsize-6
new_y=new_y+4
temp_y=new_y
new_x=0
If chance(branch_chance) Then
branch_type=-1
If chance(cobble_chance) Then
branch_type=-2
EndIf
;create a branch at this spot
;determine if on left or on right
branch_pos=2*Rand(0,1)
;get leftmost or rightmost path in this row
leftmost=gridsize
rightmost=0
For i=0 To gridsize
If fr\grid[((gridsize-1-new_y)*gridsize)+i]=1 Then
If i<leftmost Then leftmost=i
If i>rightmost Then rightmost=i
EndIf
Next
If branch_pos=0 Then new_x=leftmost-1 Else new_x=rightmost+1
;before creating a branch make sure there are no 1's above or below
If (temp_y<>0 And fr\grid[((gridsize-1-temp_y+1)*gridsize)+new_x]=1) Or fr\grid[((gridsize-1-temp_y-1)*gridsize)+new_x]=1 Then
Exit ;break simply to stop creating the branch
EndIf
fr\grid[((gridsize-1-temp_y)*gridsize)+new_x]=branch_type ;make 4s so you don't confuse your branch for a path; will be changed later
If branch_pos=0 Then new_x=leftmost-2 Else new_x=rightmost+2
fr\grid[((gridsize-1-temp_y)*gridsize)+new_x]=branch_type ;branch out twice to avoid creating an unwanted 2x2 path with the real path
i = 2
While i<branch_max_life
i=i+1
If chance(branch_die_chance) Then
Exit
EndIf
If Rand(0,3)=0 Then ;have a higher chance to go up to confuse the player