diff --git a/src/engine/e_input.pas b/src/engine/e_input.pas
index 83508f3ae090329f44ee33599377eceb31c9e6c1..1f1ba160be591fe9771b9779a295c7b13d140c76 100644 (file)
--- a/src/engine/e_input.pas
+++ b/src/engine/e_input.pas
interface
-uses
- SysUtils,
- e_log,
- SDL2;
+uses SysUtils, SDL2;
const
e_MaxKbdKeys = SDL_NUM_SCANCODES;
// $$$..$$$ - 48 Virtual buttons/keys
// these are apparently used in g_gui and g_game and elsewhere
- IK_INVALID = 65535;
+ IK_INVALID = 0;
IK_ESCAPE = SDL_SCANCODE_ESCAPE;
IK_RETURN = SDL_SCANCODE_RETURN;
IK_KPRETURN= SDL_SCANCODE_KP_ENTER;
HAT_RIGHT = 2;
HAT_DOWN = 3;
-function e_InitInput(): Boolean;
-procedure e_ReleaseInput();
-procedure e_ClearInputBuffer();
-//function e_PollInput(): Boolean;
-procedure e_PollJoysticks(); // call this from message loop to update joysticks
-function e_KeyPressed(Key: Word): Boolean;
-function e_AnyKeyPressed(): Boolean;
-function e_GetFirstKeyPressed(): Word;
-function e_JoystickStateToString(mode: Integer): String;
-function e_JoyByHandle(handle: Word): Integer;
-function e_JoyButtonToKey(id: Word; btn: Byte): Word;
-function e_JoyAxisToKey(id: Word; ax: Byte; dir: Byte): Word;
-function e_JoyHatToKey(id: Word; hat: Byte; dir: Byte): Word;
-procedure e_SetKeyState(key: Word; state: Integer);
-
-procedure e_UnpressAllKeys ();
-procedure e_KeyUpDown (key: Word; down: Boolean);
-
-type
- TJoystick = record
- ID: Byte;
- Handle: PSDL_Joystick;
- Axes: Byte;
- Buttons: Byte;
- Hats: Byte;
- ButtBuf: array [0..e_MaxJoyBtns] of Boolean;
- AxisBuf: array [0..e_MaxJoyAxes] of Integer;
- AxisZero: array [0..e_MaxJoyAxes] of Integer;
- HatBuf: array [0..e_MaxJoyHats] of array [HAT_LEFT..HAT_DOWN] of Boolean;
- end;
+function e_InitInput: Boolean;
+procedure e_ReleaseInput;
+procedure e_UnpressAllKeys;
+procedure e_KeyUpDown (key: Integer; down: Boolean);
+
+function e_KeyPressed (key: Integer): Boolean;
+function e_AnyKeyPressed: Boolean;
+function e_GetFirstKeyPressed: Integer;
+function e_HasJoysticks: Boolean;
+
+function e_JoyButtonToKey (id, btn: Integer): Integer;
+function e_JoyAxisToKey (id, ax, dir: Integer): Integer;
+function e_JoyHatToKey (id, hat, dir: Integer): Integer;
var
- {e_MouseInfo: TMouseInfo;}
- e_EnableInput: Boolean = False;
- e_JoysticksAvailable: Byte = 0;
- e_JoystickDeadzones: array [0..e_MaxJoys-1] of Integer = (8192, 8192, 8192, 8192);
- e_KeyNames: array [0..e_MaxInputKeys] of String;
- Joysticks: array of TJoystick = nil;
+ e_JoystickAvailable: array [0..e_MaxJoys - 1] of Boolean;
+ e_JoystickDeadzones: array [0..e_MaxJoys - 1] of Integer = (8192, 8192, 8192, 8192);
+ e_KeyNames: array [0..e_MaxInputKeys] of String;
implementation
-uses Math;
-
const
KBRD_END = e_MaxKbdKeys;
JOYK_BEG = KBRD_END;
VIRT_END = VIRT_BEG + e_MaxVirtKeys;
var
- KeyBuffer: array [0..e_MaxKbdKeys] of Boolean;
- JoyBuffer: array [JOYK_BEG..JOYH_END] of Boolean;
- VirtBuffer: array [0..e_MaxVirtKeys] of Boolean;
-
-function OpenJoysticks(): Byte;
-var
- i, j, k, c: Integer;
- joy: PSDL_Joystick;
-begin
- Result := 0;
- k := Min(e_MaxJoys, SDL_NumJoysticks());
- if k = 0 then Exit;
- c := 0;
- for i := 0 to k do
- begin
- joy := SDL_JoystickOpen(i);
- if joy <> nil then
- begin
- Inc(c);
- e_WriteLog('Input: Opened SDL joystick ' + IntToStr(i) + ' (' + SDL_JoystickName(joy) +
- ') as joystick ' + IntToStr(c) + ':', TMsgType.Notify);
- SetLength(Joysticks, c);
- with Joysticks[c-1] do
- begin
- ID := i;
- Handle := joy;
- Axes := Min(e_MaxJoyAxes, SDL_JoystickNumAxes(joy));
- Buttons := Min(e_MaxJoyBtns, SDL_JoystickNumButtons(joy));
- Hats := Min(e_MaxJoyHats, SDL_JoystickNumHats(joy));
- // TODO: find proper solution for this xbox trigger shit
- for j := 0 to Axes do AxisZero[j] := SDL_JoystickGetAxis(joy, j);
- e_WriteLog(' ' + IntToStr(Axes) + ' axes, ' + IntToStr(Buttons) + ' buttons, ' +
- IntToStr(Hats) + ' hats.', TMsgType.Notify);
- end;
- end;
- end;
- Result := c;
-end;
-
-procedure ReleaseJoysticks();
-var
- i: Integer;
-begin
- if (Joysticks = nil) or (e_JoysticksAvailable = 0) then Exit;
- for i := Low(Joysticks) to High(Joysticks) do
- with Joysticks[i] do
- SDL_JoystickClose(Handle);
- SetLength(Joysticks, 0);
-end;
-
-
-procedure e_UnpressAllKeys ();
-var
- i: Integer;
-begin
- for i := 0 to High(KeyBuffer) do KeyBuffer[i] := False;
- for i := JOYK_BEG to JOYH_END do JoyBuffer[i] := False;
- for i := 0 to High(VirtBuffer) do VirtBuffer[i] := False;
-end;
+ InputBuffer: array [0..e_MaxInputKeys - 1] of Boolean;
-
-procedure e_KeyUpDown (key: Word; down: Boolean);
+procedure e_UnpressAllKeys;
+ var i: Integer;
begin
- if (key > 0) and (key < Length(KeyBuffer)) then KeyBuffer[key] := down
- else if (key >= JOYK_BEG) and (key < JOYH_END) then JoyBuffer[key] := down
- else if (key >= VIRT_BEG) and (key < VIRT_END) then VirtBuffer[key - VIRT_BEG] := down
+ for i := 0 to High(InputBuffer) do
+ InputBuffer[i] := False
end;
-
-function PollKeyboard(): Boolean;
-{
-var
- Keys: PByte;
- NKeys: Integer;
- i: NativeUInt;
-}
+procedure e_KeyUpDown (key: Integer; down: Boolean);
begin
- Result := False;
- {
- Keys := SDL_GetKeyboardState(@NKeys);
- if (Keys = nil) or (NKeys < 1) then Exit;
- for i := 0 to NKeys do
- begin
- if ((PByte(NativeUInt(Keys) + i)^) <> 0) then KeyBuffer[i] := false;
- end;
- for i := NKeys to High(KeyBuffer) do KeyBuffer[i] := False;
- }
+ ASSERT(key >= 0);
+ ASSERT(key < e_MaxInputKeys);
+ if key > 0 then
+ InputBuffer[key] := down
end;
-procedure e_PollJoysticks();
-var
- i, j: Word;
- hat: Byte;
-begin
- //Result := False;
- if (Joysticks = nil) or (e_JoysticksAvailable = 0) then Exit;
- SDL_JoystickUpdate();
- for j := Low(Joysticks) to High(Joysticks) do
- begin
- with Joysticks[j] do
- begin
- for i := 0 to Buttons do ButtBuf[i] := SDL_JoystickGetButton(Handle, i) <> 0;
- for i := 0 to Axes do AxisBuf[i] := SDL_JoystickGetAxis(Handle, i);
- for i := 0 to Hats do
- begin
- hat := SDL_JoystickGetHat(Handle, i);
- HatBuf[i, HAT_UP] := LongBool(hat and SDL_HAT_UP);
- HatBuf[i, HAT_DOWN] := LongBool(hat and SDL_HAT_DOWN);
- HatBuf[i, HAT_LEFT] := LongBool(hat and SDL_HAT_LEFT);
- HatBuf[i, HAT_RIGHT] := LongBool(hat and SDL_HAT_RIGHT);
- end;
- end;
- end;
-end;
-
-procedure GenerateKeyNames();
-var
- i, j, k: LongWord;
+procedure GenerateKeyNames;
+ var i, j, k: Integer;
begin
// keyboard key names
e_KeyNames[IK_0] := '0';
e_KeyNames[IK_7] := '7';
e_KeyNames[IK_8] := '8';
e_KeyNames[IK_9] := '9';
+
for i := IK_A to IK_Z do
e_KeyNames[i] := '' + chr(ord('a') + (i - IK_a));
+
e_KeyNames[IK_ESCAPE] := 'ESCAPE';
e_KeyNames[IK_ENTER] := 'ENTER';
e_KeyNames[IK_TAB] := 'TAB';
e_KeyNames[IK_MINUS] := '-';
e_KeyNames[IK_EQUALS] := '=';
- //for i := 0 to IK_LASTKEY do
- // e_KeyNames[i] := SDL_GetScancodeName(i);
-
// joysticks
for j := 0 to e_MaxJoys-1 do
begin
e_KeyNames[VIRT_BEG + i] := 'VIRTUAL' + IntToStr(i);
end;
-function e_InitInput(): Boolean;
-begin
- Result := False;
-
- e_JoysticksAvailable := OpenJoysticks();
- e_EnableInput := True;
- GenerateKeyNames();
-
- Result := True;
-end;
-
-procedure e_ReleaseInput();
-begin
- ReleaseJoysticks();
- e_JoysticksAvailable := 0;
-end;
-
-procedure e_ClearInputBuffer();
-var
- i, j, d: Integer;
-begin
- for i := Low(KeyBuffer) to High(KeyBuffer) do
- KeyBuffer[i] := False;
- for i := JOYK_BEG to JOYH_END do
- JoyBuffer[i] := False;
- for i := Low(VirtBuffer) to High(VirtBuffer) do
- VirtBuffer[i] := False;
-(***
- if (Joysticks = nil) or (e_JoysticksAvailable = 0) then
- for i := Low(Joysticks) to High(Joysticks) do
- begin
- for j := Low(Joysticks[i].ButtBuf) to High(Joysticks[i].ButtBuf) do
- Joysticks[i].ButtBuf[j] := False;
- for j := Low(Joysticks[i].AxisBuf) to High(Joysticks[i].AxisBuf) do
- Joysticks[i].AxisBuf[j] := 0;
- for j := Low(Joysticks[i].HatBuf) to High(Joysticks[i].HatBuf) do
- for d := Low(Joysticks[i].HatBuf[j]) to High(Joysticks[i].HatBuf[j]) do
- Joysticks[i].HatBuf[j, d] := False;
- end;
-***)
-end;
-
-{
-function e_PollInput(): Boolean;
-var
- kb, js: Boolean;
+function e_HasJoysticks: Boolean;
+ var i: Integer;
begin
- kb := PollKeyboard();
- js := e_PollJoysticks();
-
- Result := kb or js;
-end;
-}
-
-function e_KeyPressed(Key: Word): Boolean;
-var
- joyi, dir: Integer;
-begin
- Result := False;
- if (Key = IK_INVALID) or (Key = 0) then Exit;
-
- if (Key < KBRD_END) then
- Result := KeyBuffer[Key]
- else if (Key >= JOYK_BEG) and (Key < JOYH_END) then
- Result := JoyBuffer[Key]
- else if (Key >= VIRT_BEG) and (Key < VIRT_END) then
- Result := VirtBuffer[Key - VIRT_BEG]
-
-(***
- else if (Key >= JOYK_BEG) and (Key < JOYK_END) then
- begin // Joystick buttons
- JoyI := (Key - JOYK_BEG) div e_MaxJoyBtns;
- if JoyI >= e_JoysticksAvailable then
- Result := False
- else
- begin
- Key := (Key - JOYK_BEG) mod e_MaxJoyBtns;
- Result := Joysticks[JoyI].ButtBuf[Key];
- end;
- end
-
- else if (Key >= JOYA_BEG) and (Key < JOYA_END) then
- begin // Joystick axes
- JoyI := (Key - JOYA_BEG) div (e_MaxJoyAxes*2);
- if JoyI >= e_JoysticksAvailable then
- Result := False
- else
- begin
- Key := (Key - JOYA_BEG) mod (e_MaxJoyAxes*2);
- dir := Key mod 2;
- if dir = AX_MINUS then
- Result := Joysticks[JoyI].AxisBuf[Key div 2] <
- Joysticks[JoyI].AxisZero[Key div 2] - e_JoystickDeadzones[JoyI]
- else
- Result := Joysticks[JoyI].AxisBuf[Key div 2] >
- Joysticks[JoyI].AxisZero[Key div 2] + e_JoystickDeadzones[JoyI]
- end;
- end
-
- else if (Key >= JOYH_BEG) and (Key < JOYH_END) then
- begin // Joystick hats
- JoyI := (Key - JOYH_BEG) div (e_MaxJoyHats*4);
- if JoyI >= e_JoysticksAvailable then
- Result := False
- else
- begin
- Key := (Key - JOYH_BEG) mod (e_MaxJoyHats*4);
- dir := Key mod 4;
- Result := Joysticks[JoyI].HatBuf[Key div 4, dir];
- end;
- end
-***)
+ i := 0;
+ while (i < e_MaxJoys) and (e_JoystickAvailable[i] = False) do inc(i);
+ result := i < e_MaxJoys
end;
-procedure e_SetKeyState(key: Word; state: Integer);
-var
- JoyI, dir: Integer;
+function e_InitInput: Boolean;
+ var i: Integer;
begin
- if (Key = IK_INVALID) or (Key = 0) then Exit;
-
- if (Key < KBRD_END) then
- keyBuffer[key] := (state <> 0)
- else if (Key >= JOYK_BEG) and (Key <= JOYH_END) then
- JoyBuffer[key] := (state <> 0)
- else if (Key >= VIRT_BEG) and (Key <= VIRT_END) then
- VirtBuffer[Key - VIRT_BEG] := (state <> 0)
-
-(***
- else if (Key >= JOYK_BEG) and (Key < JOYK_END) then
- begin // Joystick buttons
- JoyI := (Key - JOYK_BEG) div e_MaxJoyBtns;
- if JoyI >= e_JoysticksAvailable then
- Exit
- else
- begin
- Key := (Key - JOYK_BEG) mod e_MaxJoyBtns;
- Joysticks[JoyI].ButtBuf[Key] := (state <> 0);
- end;
- end
-
- else if (Key >= JOYA_BEG) and (Key < JOYA_END) then
- begin // Joystick axes
- JoyI := (Key - JOYA_BEG) div (e_MaxJoyAxes*2);
- if JoyI >= e_JoysticksAvailable then
- Exit
- else
- begin
- Key := (Key - JOYA_BEG) mod (e_MaxJoyAxes*2);
- Joysticks[JoyI].AxisBuf[Key div 2] := state;
- end;
- end
-
- else if (Key >= JOYH_BEG) and (Key < JOYH_END) then
- begin // Joystick hats
- JoyI := (Key - JOYH_BEG) div (e_MaxJoyHats*4);
- if JoyI >= e_JoysticksAvailable then
- Exit
- else
- begin
- Key := (Key - JOYH_BEG) mod (e_MaxJoyHats*4);
- dir := Key mod 4;
- Joysticks[JoyI].HatBuf[Key div 4, dir] := (state <> 0);
- end;
- end
-***)
+ for i := 0 to e_MaxJoys - 1 do
+ e_JoystickAvailable[i] := False;
+ GenerateKeyNames;
+ result := True
end;
-function e_AnyKeyPressed(): Boolean;
-var
- k: Word;
+procedure e_ReleaseInput;
+ var i: Integer;
begin
- Result := False;
-
- for k := 1 to e_MaxInputKeys do
- if e_KeyPressed(k) then
- begin
- Result := True;
- Break;
- end;
+ for i := 0 to e_MaxJoys - 1 do
+ e_JoystickAvailable[i] := False
end;
-function e_GetFirstKeyPressed(): Word;
-var
- k: Word;
+function e_KeyPressed (key: Integer): Boolean;
begin
- Result := IK_INVALID;
-
- for k := 1 to e_MaxInputKeys do
- if e_KeyPressed(k) then
- begin
- Result := k;
- Break;
- end;
+ ASSERT(key >= 0);
+ ASSERT(key < e_MaxInputKeys);
+ result := InputBuffer[key]
end;
-////////////////////////////////////////////////////////////////////////////////
-
-function e_JoystickStateToString(mode: Integer): String;
+function e_AnyKeyPressed: Boolean;
begin
- Result := '';
+ result := e_GetFirstKeyPressed <> IK_INVALID;
end;
-function e_JoyByHandle(handle: Word): Integer;
-var
- i: Integer;
+function e_GetFirstKeyPressed: Integer;
+ var i: Integer;
begin
- Result := -1;
- if Joysticks = nil then Exit;
- for i := Low(Joysticks) to High(Joysticks) do
- if Joysticks[i].ID = handle then
- begin
- Result := i;
- Exit;
- end;
+ i := 1;
+ while (i < e_MaxInputKeys) and (InputBuffer[i] = False) do inc(i);
+ if i < e_MaxInputKeys then
+ result := i
+ else
+ result := IK_INVALID
end;
-function e_JoyButtonToKey(id: Word; btn: Byte): Word;
+function e_JoyButtonToKey (id, btn: Integer): Integer;
begin
- Result := 0;
- if id >= e_MaxJoys then Exit;
- Result := JOYK_BEG + id*e_MaxJoyBtns + btn;
+ ASSERT(id >= 0);
+ ASSERT(id < e_MaxJoys);
+ ASSERT(btn >= 0);
+ ASSERT(btn < e_MaxJoyBtns);
+ result := JOYK_BEG + id*e_MaxJoyBtns + btn
end;
-function e_JoyAxisToKey(id: Word; ax: Byte; dir: Byte): Word;
+function e_JoyAxisToKey (id, ax, dir: Integer): Integer;
begin
- Result := 0;
- if id >= e_MaxJoys then Exit;
- Result := JOYA_BEG + id*e_MaxJoyAxes*2 + ax*2 + dir;
+ ASSERT(id >= 0);
+ ASSERT(id < e_MaxJoys);
+ ASSERT(ax >= 0);
+ ASSERT(ax < e_MaxJoyAxes);
+ ASSERT(dir in [AX_MINUS, AX_PLUS]);
+ result := JOYA_BEG + id*e_MaxJoyAxes*2 + ax*2 + dir
end;
-function e_JoyHatToKey(id: Word; hat: Byte; dir: Byte): Word;
+function e_JoyHatToKey (id, hat, dir: Integer): Integer;
begin
- Result := 0;
- if id >= e_MaxJoys then Exit;
- Result := JOYH_BEG + id*e_MaxJoyHats*4 + hat*4 + dir;
+ ASSERT(id >= 0);
+ ASSERT(id < e_MaxJoys);
+ ASSERT(hat >= 0);
+ ASSERT(hat < e_MaxJoyHats);
+ ASSERT(dir in [HAT_LEFT, HAT_UP, HAT_RIGHT, HAT_DOWN]);
+ result := JOYH_BEG + id*e_MaxJoyHats*4 + hat*4 + dir
end;
-
end.