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ZApplication.pas
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ZApplication.pas
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{Copyright (c) 2012 Ville Krumlinde
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.}
unit ZApplication;
interface
uses ZClasses,Meshes,Collision,Commands,AudioComponents, GLDrivers
{$ifndef minimal},Generics.Collections,uSymTab,Contnrs,Renderer{$endif}
;
type
//Application states
TAppState = class(TStateBase)
private
protected
procedure DefineProperties(List: TZPropertyList); override;
public
ModelUpdatesEnabled : boolean;
CollisionsEnabled : boolean;
end;
TZApplication = class;
{$ifdef zgeviz}
TAppCallback = procedure(App : TZApplication) of object;
{$endif}
TCamera = class(TZComponent)
private
procedure ApplyTransform(const Aspect : single);
protected
procedure DefineProperties(List: TZPropertyList); override;
public
Kind : (catPerspective,catOrthograpic);
Position : TZVector3f;
Rotation : TZVector3f;
ClipNear,ClipFar,OrthoZoom,FOV : single;
end;
TAspectRatio = (vprFullWindow,vprCustom,vpr4_3,vpr16_9);
TZApplication = class(TZComponent)
strict private
DepthList : TZArrayList;
ConstantPool : TZComponentList;
{$ifndef minimal}
ConstantMap : TDictionary<AnsiString,TObject>;
{$endif}
FpsFrames : integer;
FpsCounter,FpsTime : single;
HasShutdown : boolean;
TargetFrameRate : integer;
NextFrameTime : single;
LastTime : single;
procedure RenderModels;
procedure MainSlice;
procedure Init;
procedure Shutdown;
procedure UpdateScreen;
private
CurrentState : TAppState;
procedure ApplyCameraTransform;
{$ifndef minimal}public{$endif}
procedure UpdateTime;
procedure UpdateStateVars;
{$if (not defined(minimal)) or defined(android)}public{$ifend}
function Main : boolean;
protected
procedure DefineProperties(List: TZPropertyList); override;
{$ifndef minimal}
procedure InitAfterPropsAreSet; override;
{$endif}
public
Content : TZComponentList;
Models : TModels; //not a property
Driver : TGLDriverBase;
Collisions : TCollisionChecks;
States : TZComponentList;
OnLoaded : TZComponentList;
OnClose : TZComponentList;
OnUpdate : TZComponentList;
OnRender : TZComponentList;
OnBeginRenderPass : TZComponentList;
Lights : TZComponentList;
GlobalVars : TZComponentList;
Terminating : boolean;
Time,DeltaTime : single;
Caption : TPropString;
MousePosition : TZVector3f;
ClearScreenMode : integer;
ClearColor : TZColorf;
AmbientLightColor : TZColorf;
Fullscreen : boolean;
ScreenMode : (vmFullScreenDesktop,vm640x480,vm800x600,vm1024x768,vm1280x800,vm1280x1024);
ShowOptionsDialog : boolean;
CustomScreenWidth,CustomScreenHeight : integer;
CameraPosition : TZVector3f;
CameraRotation : TZVector3f;
LightPosition : TZVector4f;
CustomViewportRatio,FOV,ClipNear,ClipFar : single;
ViewportRatio : TAspectRatio;
ActualViewportRatio : single;
FrameRateStyle : (frsSyncedWithMonitor,frsFree,frsFixed);
FixedFrameRate : integer;
MouseVisible : boolean;
EscapeToQuit : boolean;
CurrentRenderPass,RenderPasses : integer;
WindowHandle : integer;
ViewportX,ViewportY,ViewportWidth,ViewportHeight : integer;
MouseWheelDelta : integer;
Camera : TCamera;
GLBase : TGLBase;
NoSound : boolean;
FrameLoss : boolean; //sätts till true ifall vi tappar frames
ScreenWidth : integer;
ScreenHeight : integer;
{$ifndef minimal}
Icon : TZBinaryPropValue;
AndroidPackageName,AndroidVersionName : TPropString;
AndroidVersionNumber : integer;
AndroidPortrait : boolean;
AndroidSdk : byte;
PreviewClearColor : TZColorf;
DesignerIsRunning : boolean;
FileVersion : integer;
//Zc-parsing
SymTab : TSymbolTable;
ZcGlobalNames : TObjectList;
OnGetLibraryPath : function : string of object;
{$endif}
{$ifdef zgeviz}
ZgeVizCameraRotation : TZVector3f;
ZgeVizTime : single;
ZgeVizCameraCallback,ZgeVizViewportCallback : TAppCallback;
MainRenderTarget : TRenderTarget;
procedure ViewportChanged;
{$endif}
constructor Create(OwnerList: TZComponentList); override;
destructor Destroy; override;
procedure Run;
procedure AddModel(Model : TModel);
procedure Update; override;
procedure UpdateViewport; overload;
procedure UpdateViewport(const W,H : integer); overload;
function NormalizeToScreen(P : TZPointi) : TZVector2f;
procedure CenterMouse;
procedure ResetGpuResources; override;
{$ifndef minimal}
procedure Terminate;
procedure DesignerStart(const ViewW,ViewH : integer; const InitTime : single = 0);
procedure DesignerStop;
procedure DesignerSetUpView;
function AddToConstantPool(const Value : string) : TObject;
procedure ClearConstantPool;
procedure RefreshSymbolTable;
procedure Compile;
procedure CompileProperty(C : TZComponent; Expr : TZPropertyValue; const Prop : TZProperty);
function BindComponent<T : class>(const CompName : string; out O : T) : boolean;
{$endif}
end;
TComponentHelper = class helper for TZComponent
public
function ZApp : TZApplication;
{$ifndef minimal}
function HasZApp: boolean;
{$endif}
end;
TSetAppState = class(TCommand)
protected
procedure DefineProperties(List: TZPropertyList); override;
public
State : TAppState;
procedure Execute; override;
{$ifndef minimal}
function GetDisplayName: AnsiString; override;
{$endif}
end;
function LoadApplicationComponent : TZApplication;
const
TicksPerSecond = 1000;
AppFileVersion = 2;
implementation
uses ZPlatform,ZLog,AudioPlayer,ZMath,ZOpenGL
{$ifndef minimal}
,ZExpressions,SysUtils,Zc_Ops,Classes,Compiler
{$else}
,Renderer
{$endif}
;
{ TZApplication }
constructor TZApplication.Create(OwnerList: TZComponentList);
begin
inherited;
Models := TModels.Create;
Models.App := Self;
Collisions := TCollisionChecks.Create(Models,Self);
DepthList := TZArrayList.CreateReferenced;
{$ifndef minimal}
ConstantMap := TDictionary<AnsiString,TObject>.Create;
SymTab := TSymbolTable.Create;
ZcGlobalNames := TObjectList.Create(True);
{$endif}
end;
destructor TZApplication.Destroy;
begin
Terminating := True;
Models.RemoveAll;
Collisions.Free;
DepthList.Free;
if not HasShutdown then
Shutdown;
//ev problem med models.free, borde göra models.removeall vid terminate först
//annars kan models referera modeller som redan har gjorts free på
Models.Free;
Driver.Free;
{$ifndef minimal}
ConstantMap.Free;
SymTab.Free;
ZcGlobalNames.Free;
{$endif}
inherited;
end;
procedure TZApplication.Init;
{$ifdef minimal}
var
I : integer;
{$endif}
begin
{$ifndef zgeviz}
Platform_InitGlobals; //Nollställ timer etc
{$endif}
{$ifndef minimal}
//no init if inside designer tool
if Self.Driver=nil then
Self.Driver := GLDrivers.CreateDriver(Self.GLBase);
UpdateViewport;
{$else}
if Platform_CommandLine('f') then
Self.FullScreen := True;
if Platform_CommandLine('w') then
Self.FullScreen := False;
if ShowOptionsDialog then
begin
if not Platform_ShowOptionDialog(Self) then Halt;
end;
{$ifndef android}
if((CustomScreenWidth > 0) and (CustomScreenHeight > 0)) then
begin
ScreenWidth := Self.CustomScreenWidth;
ScreenHeight := Self.CustomScreenHeight;
end
else
begin
I := Ord(Self.ScreenMode);
ScreenWidth := ScreenModes[ I ].W;
ScreenHeight := ScreenModes[ I ].H;
end;
{$endif}
Self.WindowHandle := Platform_InitScreen(ScreenWidth,ScreenHeight, Self.Fullscreen , PAnsiChar(Self.Caption), Self);
Self.Driver := GLDrivers.CreateDriver(Self.GLBase);
Driver.InitGL;
Platform_ShowMouse(MouseVisible);
UpdateViewport;
TargetFrameRate := Platform_GetDisplayRefreshRate;
{$ifdef MSWINDOWS}
if (Self.FrameRateStyle=frsSyncedWithMonitor) and Assigned(wglSwapIntervalEXT) then
begin
wglSwapIntervalEXT(1);
end;
{$endif}
if Platform_CommandLine('s') then
NoSound := True;
if not NoSound then
Platform_InitAudio;
{$endif}
end;
{$ifndef minimal}
procedure TZApplication.InitAfterPropsAreSet;
begin
Self.RefreshSymbolTable;
Self.FileVersion := AppFileVersion;
end;
{$endif}
procedure TZApplication.Shutdown;
begin
{$ifdef minimal}
if not NoSound then
Platform_ShutdownAudio;
if (Self.CurrentState<>nil) then
Self.CurrentState.OnLeave.ExecuteCommands;
OnClose.ExecuteCommands;
Platform_ShutdownScreen;
{$endif}
HasShutdown:=True;
end;
procedure TZApplication.Update;
begin
Content.Update;
States.Update;
end;
procedure TZApplication.UpdateTime;
const
//Maximum time step for update and collision=1/10 second
MaxUpdateStep = 1.0 / 10;
begin
{$ifdef zgeviz}
Time := Self.ZgeVizTime;
{$else}
Time := Platform_GetTime;
{$endif}
DeltaTime := Time - LastTime;
//Avoid too high steps such as when grabbing win-caption with mouse
if DeltaTime>MaxUpdateStep then
begin
DeltaTime := MaxUpdateStep;
Self.FrameLoss := True;
end
else
Self.FrameLoss := False;
//todo: om deltatime är för hög, öka LostTime, och justera Time och Accumulated med den
if DeltaTime<0 then
//Apparantly deltatime can become negative in multicore processors
DeltaTime := 0;
//Also see this discussion
//http://www.yakyak.org/viewtopic.php?t=48231&highlight=&sid=7a0084f72cfc50768c1ed4ce3fe0ae8c
LastTime := Time;
end;
function TZApplication.NormalizeToScreen(P : TZPointi) : TZVector2f;
begin
//Clip coord to current viewport
Dec(P.X,ViewportX);
Dec(P.Y,ViewportY);
if P.X<0 then
P.X := 0;
if P.X>=ViewportWidth then
P.X := ViewportWidth-1;
if P.Y<0 then
P.Y := 0;
if P.Y>=ViewportHeight then
P.Y := ViewportHeight-1;
//-1 .. 1, 0 är center
Result[0] := (P.X / ViewportWidth) * 2 - 1;
//Y-axis is reversed compared to our opengl camera
Result[1] := (((ViewportHeight-P.Y) / ViewportHeight) * 2 - 1);
{$ifndef minimal}
//issue http://www.emix8.org/forum/viewtopic.php?t=947
if Abs(Result[0])<=2/ViewportWidth then
Result[0] := 0;
if Abs(Result[1])<=2/ViewportHeight then
Result[1] := 0;
{$endif}
end;
procedure TZApplication.UpdateStateVars;
begin
PZVector2f(@MousePosition)^ := NormalizeToScreen(Platform_GetMousePos);
end;
procedure TZApplication.CenterMouse;
begin
Platform_SetMousePos(ZApp.ScreenWidth shr 1,ZApp.ScreenHeight shr 1);
MousePosition[0] := 0;
MousePosition[1] := 0;
end;
function TZApplication.Main : boolean;
var
{$ifdef minimal}
Remaining : integer;
{$endif}
Now : single;
{$if not (defined(minimal) or defined(ZgeViz))}
procedure InDumpDebugInfo;
var
I,J : integer;
begin
J := 0;
for I := 0 to Models.Cats.Count - 1 do
Inc(J,Models.Get(I).Count);
ZLog.GetLog(Self.ClassName).Write( 'Models: ' + IntToStr(J) + ', managed: ' + ManagedHeap_GetStatus );
end;
{$ifend}
begin
Now := Platform_GetTime;
{.$ifdef minimal} //Ok, lets try to have frame rate setting respected in designer too
if Now>=NextFrameTime then
{.$endif}
begin //Delay until next frame
if (FrameRateStyle<>frsFree) //But not if set to "Free"
{$ifdef MSWINDOWS}
//Or if wglSwapIntervalEXT has been called because then vsync-wait is enabled in driver already
and not ((Self.FrameRateStyle=frsSyncedWithMonitor) and Assigned(wglSwapIntervalEXT))
{$endif}
then
begin
if FrameRateStyle=frsFixed then
TargetFrameRate := Self.FixedFrameRate;
if (TargetFrameRate<1) or (TargetFrameRate>200) then
TargetFrameRate := 60;
if NextFrameTime<Now-1 then
NextFrameTime := Now;
NextFrameTime := NextFrameTime + (1.0 / TargetFrameRate);
end;
UpdateTime;
UpdateStateVars;
Self.MainSlice;
//Draw all
UpdateScreen;
Inc(FpsFrames);
if (Time-FpsTime)>1.0 then
begin
FpsCounter := FpsFrames / (Time-FpsTime);
FpsFrames := 0;
FpsTime := Time;
{$if not (defined(minimal) or defined(ZgeViz))}
InDumpDebugInfo;
{$ifend}
end;
if ManagedHeap_GetAllocCount>0 then
ManagedHeap_GarbageCollect;
{$ifdef minimal}
if FrameRateStyle<>frsFree then
begin //Give remaining time back to the OS to avoid 100% cpu pressure
Remaining := Trunc((NextFrameTime - Platform_GetTime) * 1000);
if Remaining>0 then
Platform_Sleep(Remaining);
end;
{$endif}
end;
//Keep calling main until Terminate is called
Result := not Terminating;
end;
procedure TZApplication.MainSlice;
begin
if AudioComponents.CurrentMusic<>nil then
AudioComponents.CurrentMusic.Update;
//Uppdatera current state
if CurrentState<>nil then
CurrentState.Update;
//Application onupdate
OnUpdate.ExecuteCommands;
//Update application renderers: particlesystems, beams etc
OnRender.Update;
//Uppdatera modeller, flytta noder
if (CurrentState=nil) or CurrentState.ModelUpdatesEnabled then
Models.Update;
//Test collisions
if (CurrentState=nil) or CurrentState.CollisionsEnabled then
Collisions.Update;
//Emit sounds queued by models and music
if not NoSound then
AudioPlayer.EmitSoundsInEmitList;
//Notify that net-data has been read
if Commands.NetResultList.Count>0 then
TWebOpen.FlushResultList;
{$ifndef minimal}
if (Self.Driver<>nil) and (Self.Driver.Kind<>Self.GLBase) then
begin
FreeAndNil(Self.Driver);
Self.Driver := GLDrivers.CreateDriver(Self.GLBase);
end;
{$endif}
//Reset wheel delta (it is set from platform)
MouseWheelDelta := 0;
end;
procedure TZApplication.Run;
begin
Init;
//Skip initial tree update for now because it triggers AppState.OnStart etc. which can cause trouble
//Any component needing init should ovveride Loaded instead.
//Self.Update;
OnLoaded.ExecuteCommands;
Platform_Run(Self.Main);
end;
{$ifndef minimal}
procedure TZApplication.Terminate;
begin
Terminating := True;
Shutdown;
end;
{$endif}
procedure TZApplication.UpdateViewport;
begin
UpdateViewport(ScreenWidth,ScreenHeight);
end;
//Update ActualViewportRatio which is the ratio that is used
procedure TZApplication.UpdateViewport(const W,H : integer);
begin
if Self.ViewportRatio=vprFullWindow then
begin
ActualViewportRatio := W/H;
glViewport(0,0,W,H);
ViewportWidth := W;
ViewportHeight := H;
ViewportX := 0;
ViewportY := 0;
end
else
begin
case Self.ViewportRatio of
vprCustom : ActualViewportRatio := Self.CustomViewportRatio;
vpr4_3 : ActualViewportRatio := 4/3;
vpr16_9 : ActualViewportRatio := 16/9;
{$ifndef minimal}
else
;
{$endif}
end;
if W/H > ActualViewportRatio then
begin
ViewportWidth := Round(H*ActualViewportRatio);
ViewportHeight := H;
ViewportX := Round((W-H*ActualViewportRatio)*0.5);
ViewportY := 0;
end
else
begin
ViewportWidth := W;
ViewportHeight := Round(W/ActualViewportRatio);
ViewportX := 0;
ViewportY := Round((H-W/ActualViewportRatio)*0.5);
end;
glViewport(ViewportX, ViewportY, ViewportWidth, ViewportHeight);
end;
{$ifdef zgeviz}
ViewportChanged;
{$endif}
end;
{$ifdef zgeviz}
procedure TZApplication.ViewportChanged;
begin
if Assigned(Self.ZgeVizViewportCallback) then
Self.ZgeVizViewportCallback(Self);
end;
{$endif}
procedure SortModels(List : TZArrayList);
//http://en.wikipedia.org/wiki/Cocktail_sort
//http://www.algorithm-code.com/wiki/Cocktail_sort
var
First,Last,I,Shift : integer;
begin
Shift := 0;
First := 0;
Last := List.Count-1;
while First<Last do
begin
for I := First+1 to Last do
begin
if TModel(List[I]).SortKey<TModel(List[I-1]).SortKey then
begin
List.Swap(I,I-1);
Shift := I;
end;
end;
Last := Shift;
for I := Last downto First+1 do
begin
if TModel(List[I]).SortKey<TModel(List[I-1]).SortKey then
begin
List.Swap(I,I-1);
Shift := I;
end;
end;
First := Shift;
end;
end;
procedure TZApplication.RenderModels;
var
I,J : integer;
Model : TModel;
List : TZArrayList;
Matrix,TmpM : TZMatrix4f;
V : TZVector3f;
begin
DepthList.Clear;
{$ifndef android}
glGetFloatv(GL_PROJECTION_MATRIX, @Matrix);
glGetFloatv(GL_MODELVIEW_MATRIX, @TmpM);
Matrix := MatrixMultiply(TmpM,Matrix);
{$else}
Matrix := IdentityHmgMatrix;
{$endif}
for I := 0 to Models.Cats.Count-1 do
begin
List := Models.Get(I);
for J := 0 to List.Count-1 do
begin
Model := TModel(List[J]);
if Model.RenderOrder=roDepthsorted then
begin
//Get screen Z-position
VectorTransform(Model.Position,Matrix,V);
Model.SortKey := V[2];
DepthList.Add(Model)
end
else
Renderer.RenderModel(Model);
end;
end;
SortModels(DepthList);
for I := DepthList.Count-1 downto 0 do
begin
Model := TModel(DepthList[I]);
Renderer.RenderModel(Model);
end;
Meshes.CurrentModel := nil;
end;
procedure TZApplication.ApplyCameraTransform;
begin
if Camera<>nil then
Camera.ApplyTransform(Self.ActualViewportRatio)
else
begin
{$ifdef zgeviz}
if Assigned(Self.ZgeVizCameraCallback) then
Self.ZgeVizCameraCallback(Self)
else
begin
{$endif}
//Setup view and camera
Driver.MatrixMode(GL_PROJECTION);
Driver.LoadIdentity;
Driver.Perspective(Self.FOV, Self.ActualViewportRatio, Self.ClipNear, Self.ClipFar);
Driver.MatrixMode(GL_MODELVIEW);
Driver.LoadIdentity;
{$ifdef zgeviz}
end;
{$endif}
{$ifdef zgeviz}
Driver.Rotate( (ZgeVizCameraRotation[2]*360) , 0, 0, 1);
{$endif}
//Reverse order to make XYZ-rotation
Driver.Rotate( (CameraRotation[0]*360) , 1, 0, 0);
Driver.Rotate( (CameraRotation[1]*360) , 0, 1, 0);
Driver.Rotate( (CameraRotation[2]*360) , 0, 0, 1);
//Måste ta negativt på cameraposition för att dess axlar ska bete sig
//likadant som modell-koordinater (positiv y = uppåt t.ex.)
Driver.Translate(-CameraPosition[0], -CameraPosition[1], -CameraPosition[2]);
end;
end;
procedure TZApplication.UpdateScreen;
var
I,J : integer;
begin
for I := 0 to Self.RenderPasses-1 do
begin
Self.CurrentRenderPass := I;
if Self.OnBeginRenderPass.Count>0 then
Self.OnBeginRenderPass.ExecuteCommands;
{$ifndef zgeviz}
if {$if defined(minimal) and (not defined(android))}(ViewportRatio=vprCustom) and {$ifend}
(CurrentRenderTarget=nil) then
UpdateViewport;
{$endif}
//Use custom camera or default
ApplyCameraTransform;
if (ClearScreenMode=0) and (CurrentRenderTarget=nil) then
begin
glClearColor(ClearColor.V[0],ClearColor.V[1],ClearColor.V[2],0);
glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
end;
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, @Self.AmbientLightColor);
if Lights.Count=0 then
begin
glLightfv(GL_LIGHT0,GL_POSITION,@LightPosition)
end
else
begin
for J := 0 to Lights.Count-1 do
TLight(Lights[J]).ApplyLight(J);
end;
Driver.EnableMaterial(DefaultMaterial);
RenderModels;
//Render application
Driver.PushMatrix;
if Self.OnRender.Count>0 then
Self.OnRender.ExecuteCommands;
if Self.CurrentState<>nil then
Self.CurrentState.OnRender.ExecuteCommands;
Driver.PopMatrix;
Driver.EnableMaterial(DefaultMaterial);
for J := 0 to Lights.Count-1 do
TLight(Lights[J]).RemoveLight(J);
end;
//End frame
glFlush;
{$ifdef minimal}
//I designer så ansvarar GL-komponenten för swapbuffer
Platform_SwapBuffers;
{$endif}
end;
procedure TZApplication.ResetGpuResources;
var
I,J : integer;
Model : TModel;
List : TZArrayList;
begin
inherited;
//Instanced models are not part of the project tree if they have been spawned
//using clone so they need to be handled separately.
for I := 0 to Models.Cats.Count-1 do
begin
List := Models.Get(I);
for J := 0 to List.Count-1 do
begin
Model := TModel(List[J]);
Model.ResetGpuResources;
end;
end;
end;
{$ifndef minimal}
function TZApplication.BindComponent<T>(const CompName: string;
out O: T): boolean;
var
Temp : TObject;
begin
Temp := Self.SymTab.Lookup(CompName);
if (Temp is T) then
begin
O := Temp as T;
Result := True
end
else
begin
O := nil;
Result := False;
end;
end;
procedure TZApplication.DesignerSetUpView;
begin
//Used for previewing app-state in designer
UpdateViewport;
Self.ApplyCameraTransform;
glClearColor(ClearColor.V[0],ClearColor.V[1],ClearColor.V[2],0);
glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
glLightfv(GL_LIGHT0,GL_POSITION,@LightPosition);
end;
function TZApplication.AddToConstantPool(const Value : string) : TObject;
var
Key : AnsiString;
Con : TExpStringConstant;
begin
Key := AnsiString(Value);
if not ConstantMap.TryGetValue(Key,Result) then
begin
Con := TExpStringConstant.Create(ConstantPool);
Con.SetString('Value',Key);
ConstantMap.Add(Key,Con);
Result := Con;
end;
end;
procedure TZApplication.ClearConstantPool;
begin
ConstantPool.Clear;
ConstantMap.Clear;
end;
procedure TZApplication.RefreshSymbolTable;
var
List : TStringList;
I : integer;
Con : TDefineConstant;
BuiltInFunctions,BuiltInConstants : TObjectList;
Func : TZcOpFunctionBuiltIn;
begin
ZcGlobalNames.Clear;
SymTab.ClearAll;
//Scope 0: global constants and built-in functions
BuiltInConstants := Zc_Ops.GetBuiltInConstants;
for I := 0 to BuiltInConstants.Count - 1 do
begin
Con := TDefineConstant(BuiltInConstants[I]);
SymTab.Add(String(Con.Name),Con);
end;
BuiltInFunctions := Zc_Ops.GetBuiltInFunctions;
for I := 0 to BuiltInFunctions.Count - 1 do
begin
Func := TZcOpFunctionBuiltIn(BuiltInFunctions[I]);
SymTab.Add(Func.Id,Func);
end;
//Scope 1: object names
SymTab.PushScope;
List := TStringList.Create;
try
GetObjectNames(Self,List);
for I := 0 to List.Count-1 do
SymTab.Add( List[I], List.Objects[I] );
finally
List.Free;
end;
end;
procedure TZApplication.Compile;
var
I,J: integer;
C : TZComponent;
Prop : TZProperty;
PropValue : TZPropertyValue;
PropList : TZPropertyList;
List : TObjectList;
OldSep : char;
begin
OldSep := FormatSettings.DecimalSeparator;
FormatSettings.DecimalSeparator := '.';
{$ifdef CPUX64}
(ZApp.SymTab.Lookup('CPUX64') as TDefineConstant).Value:=1;
{$endif}
for I := 0 to ZcGlobalNames.Count - 1 do
begin
//Remove user function names from symtab
if (ZcGlobalNames[I] is TZcOpFunctionUserDefined) and SymTab.Contains((ZcGlobalNames[I] as TZcOp).Id) then
SymTab.Remove(TZcOp(ZcGlobalNames[I]).Id)
else if (ZcGlobalNames[I] is TDefineConstant) and SymTab.Contains(String((ZcGlobalNames[I] as TDefineConstant).Name)) then
//Also remove inline constants
SymTab.Remove(String(TDefineConstant(ZcGlobalNames[I]).Name));
end;
ZcGlobalNames.Clear;
//Remove global variables (declared in zlibraries)
for I := 0 to GlobalVars.Count-1 do
begin
SymTab.Remove(String(TDefineVariableBase(GlobalVars[I]).Name))
end;
GlobalVars.Clear;
//Remove stringconstants
ClearConstantPool;
List := TObjectList.Create(False);
try
Self.GetAllChildren(List,False);
for I := 0 to List.Count - 1 do
begin
C := List[I] as TZComponent;
PropList := C.GetProperties;
for J := 0 to PropList.Count-1 do
begin
Prop := TZProperty(PropList[J]);
if Prop.PropertyType=zptExpression then
begin
PropValue := C.GetProperty(Prop);
CompileProperty(C,PropValue,Prop);
end;
end;
end;
finally
List.Free;
end;
FormatSettings.DecimalSeparator := OldSep;
end;
procedure TZApplication.CompileProperty(C : TZComponent; Expr : TZPropertyValue; const Prop : TZProperty);
var
CurParent: TZComponent;
Model : TZComponent;
S : string;
DefContent : TStringList;
begin
//ExternalLibrary can have definitions in separate file
if (C is TZExternalLibrary) and (Prop.Name='Source') then
begin
S := string( TZExternalLibrary(C).DefinitionsFile );
if S<>'' then
begin
if not Assigned(Self.OnGetLibraryPath) then
raise Exception.Create('OnGetLibraryPath not set');
S := Self.OnGetLibraryPath + '\' + S;
if not FileExists(S) then
raise Exception.Create('Definitions file not found: ' + S);
DefContent := TStringList.Create;
DefContent.LoadFromFile(S);
Expr.ExpressionValue.Source := DefContent.Text;
DefContent.Free;
end;
end;
if Prop.IsDefaultValue(Expr) then
begin
//Generate no code for an empty expression
Expr.ExpressionValue.Code.Clear;
Exit;
end;