hedgewars: comparison hedgewars/uScript.pas

equal deleted inserted replaced

-:f5573ef8cda9
+:e9c85a0acdd2
 AddChatString(#5 + s);
 if cTestLua then
 halt(rtnTestLuaErr);
 end;
-procedure LuaCallError(error ,call, paramsyntax: shortstring);
+procedure LuaCallError(error, call, paramsyntax: shortstring);
 begin
 LuaError(call + ': ' + error + '       function syntax: ' + call + ' ( ' + paramsyntax + ' )');
 end;
-procedure LuaParameterCountError(call, paramsyntax: shortstring; wrongcount: LongInt);
+procedure LuaParameterCountError(call, paramsyntax: shortstring; wrongcount: LongInt); inline;
 begin
 // TODO: i18n?
 LuaCallError('Wrong number of parameters (' + inttostr(wrongcount) + ')!', call, paramsyntax);
+end;
+// compare with allowed count
+function CheckLuaParameterCount(L : Plua_State; count: LongInt; call, paramsyntax: shortstring): boolean; inline;
+var c: LongInt;
+begin
+c:= lua_gettop(L);
+if c <> count then
+begin
+LuaParameterCountError(call, paramsyntax, c);
+exit(false);
+end;
+CheckLuaParameterCount:= true;
+end;
+// check if is either count1 or count2
+function CheckAndFetchLuaParameterCount(L : Plua_State; count1, count2: LongInt; call, paramsyntax: shortstring; out actual: LongInt): boolean; inline;
+begin
+actual:= lua_gettop(L);
+if (actual <> count1) and (actual <> count2) then
+begin
+LuaParameterCountError(call, paramsyntax, actual);
+exit(false);
+end;
+CheckAndFetchLuaParameterCount:= true;
+end;
+// check if is same or higher as minCount
+function CheckAndFetchLuaParameterCount(L : Plua_State; minCount: LongInt; call, paramsyntax: shortstring; out actual: LongInt): boolean; inline;
+begin
+actual:= lua_gettop(L);
+if (actual < minCount) then
+begin
+LuaParameterCountError(call, paramsyntax, actual);
+exit(false);
+end;
+CheckAndFetchLuaParameterCount:= true;
 end;
 function LuaToGearTypeOrd(L : Plua_State; i: LongInt; call, paramsyntax: shortstring): LongInt; inline;
 begin
 if lua_isnoneornil(L, i) then i:= -1
 // where L contains the state, returns the number of return values on the stack
 // call lua_gettop(L) to receive number of parameters passed
 function lc_band(L: PLua_State): LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 2 then
+if CheckLuaParameterCount(L, 2, 'band', 'value1, value2') then
-begin
+lua_pushinteger(L, lua_tointeger(L, 2) and lua_tointeger(L, 1))
-LuaParameterCountError('band', 'value1, value2', lua_gettop(L));
+else
 lua_pushnil(L);
-end
-else
-lua_pushinteger(L, lua_tointeger(L, 2) and lua_tointeger(L, 1));
 lc_band := 1;
 end;
 function lc_bor(L: PLua_State): LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 2 then
+if CheckLuaParameterCount(L, 2, 'bor', 'value1, value2') then
-begin
+lua_pushinteger(L, lua_tointeger(L, 2) or lua_tointeger(L, 1))
-LuaParameterCountError('bor', 'value1, value2', lua_gettop(L));
+else
 lua_pushnil(L);
-end
-else
-lua_pushinteger(L, lua_tointeger(L, 2) or lua_tointeger(L, 1));
 lc_bor := 1;
 end;
 function lc_bnot(L: PLua_State): LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'bnot', 'value') then
-begin
+lua_pushinteger(L, (not lua_tointeger(L, 1)))
-LuaParameterCountError('bnot', 'value', lua_gettop(L));
+else
 lua_pushnil(L);
-end
-else
-lua_pushinteger(L, (not lua_tointeger(L, 1)));
 lc_bnot := 1;
 end;
 function lc_div(L: PLua_State): LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 2 then
+if CheckLuaParameterCount(L, 2, 'div', 'dividend, divisor') then
-begin
+lua_pushinteger(L, lua_tointeger(L, 1) div lua_tointeger(L, 2))
-LuaParameterCountError('div', 'dividend, divisor', lua_gettop(L));
+else
 lua_pushnil(L);
-end
-else
-lua_pushinteger(L, lua_tointeger(L, 1) div lua_tointeger(L, 2));
 lc_div := 1;
 end;
 function lc_getinputmask(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 0 then
+if CheckLuaParameterCount(L, 0, 'GetInputMask', '') then
-LuaParameterCountError('GetInputMask', '', lua_gettop(L))
-else
 lua_pushinteger(L, InputMask);
 lc_getinputmask:= 1
 end;
 function lc_setinputmask(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'SetInputMask', 'mask') then
-LuaParameterCountError('SetInputMask', 'mask', lua_gettop(L))
-else
 InputMask:= lua_tointeger(L, 1);
 lc_setinputmask:= 0
 end;
 function lc_writelntoconsole(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) = 1 then
+if CheckLuaParameterCount(L, 1, 'WriteLnToConsole', 'string') then
-begin
 WriteLnToConsole('Lua: ' + lua_tostring(L ,1));
-end
-else
-LuaParameterCountError('WriteLnToConsole', 'string', lua_gettop(L));
 lc_writelntoconsole:= 0;
 end;
 function lc_parsecommand(L : Plua_State) : LongInt; Cdecl;
 var t: PChar;
 i,c: LongWord;
 s: shortstring;
 begin
-if lua_gettop(L) = 1 then
+if CheckLuaParameterCount(L, 1, 'ParseCommand', 'string') then
 begin
 t:= lua_tolstring(L, 1, Psize_t(@c));
 for i:= 1 to c do s[i]:= t[i-1];
 s[0]:= char(c);
 ParseCommand(s, true, true);
-end
+end;
-else
-LuaParameterCountError('ParseCommand', 'string', lua_gettop(L));
 lc_parsecommand:= 0;
 end;
 function lc_showmission(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) = 5 then
+if CheckLuaParameterCount(L, 5, 'ShowMission', 'caption, subcaption, text, icon, time') then
-begin
 ShowMission(lua_tostringA(L, 1), lua_tostringA(L, 2), lua_tostringA(L, 3), lua_tointeger(L, 4), lua_tointeger(L, 5));
-end
-else
-LuaParameterCountError('ShowMission', 'caption, subcaption, text, icon, time', lua_gettop(L));
 lc_showmission:= 0;
 end;
 function lc_hidemission(L : Plua_State) : LongInt; Cdecl;
 begin
 HideMission;
 lc_hidemission:= 0;
 end;
 function lc_enablegameflags(L : Plua_State) : LongInt; Cdecl;
-var i : integer;
+var i, n : integer;
 begin
-if lua_gettop(L) = 0 then
+// can have 1 or more arguments
-begin
+if CheckAndFetchLuaParameterCount(L, 1, 'EnableGameFlags', 'gameFlag, ... ', n) then
-LuaParameterCountError('EnableGameFlags', '', lua_gettop(L));
+begin
-lua_pushnil(L);
+for i:= 1 to n do
-end
+GameFlags := GameFlags or LongWord(lua_tointeger(L, i));
-else
+ScriptSetInteger('GameFlags', GameFlags);
-begin
-for i:= 1 to lua_gettop(L) do
-GameFlags := GameFlags or LongWord(lua_tointeger(L, i));
-ScriptSetInteger('GameFlags', GameFlags);
 end;
 lc_enablegameflags:= 0;
 end;
 function lc_disablegameflags(L : Plua_State) : LongInt; Cdecl;
-var i : integer;
+var i , n: integer;
 begin
-if lua_gettop(L) = 0 then
+// can have 1 or more arguments
-begin
+if CheckAndFetchLuaParameterCount(L, 1, 'DisableGameFlags', 'gameFlag, ... ', n) then
-LuaParameterCountError('DisableGameFlags', '', lua_gettop(L));
+begin
-lua_pushnil(L);
+for i:= 1 to n do
-end
-else
-begin
-for i:= 1 to lua_gettop(L) do
 GameFlags := GameFlags and (not LongWord(lua_tointeger(L, i)));
 ScriptSetInteger('GameFlags', GameFlags);
 end;
 lc_disablegameflags:= 0;
 end;
 function lc_cleargameflags(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 0 then
+if CheckLuaParameterCount(L, 0, 'ClearGameFlags', '') then
-begin
-LuaParameterCountError('ClearGameFlags', '', lua_gettop(L));
-lua_pushnil(L);
-end
-else
 begin
 GameFlags:= 0;
 ScriptSetInteger('GameFlags', GameFlags);
 end;
 lc_cleargameflags:= 0;
 end;
 function lc_getgameflag(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'GetGameFlag', 'gameflag') then
-begin
+lua_pushboolean(L, (GameFlags and LongWord(lua_tointeger(L, 1)) <> 0))
-LuaParameterCountError('GetGameFlag', 'gameflag', lua_gettop(L));
+else
 lua_pushnil(L);
-end
-else
-begin
-lua_pushboolean(L, (GameFlags and LongWord(lua_tointeger(L, 1)) <> 0));
-end;
 lc_getgameflag:= 1;
 end;
 function lc_addcaption(L : Plua_State) : LongInt; Cdecl;
 var cg: LongInt;
 const
 call = 'AddCaption';
 params = 'text [, color, captiongroup]';
 begin
-if lua_gettop(L) = 1 then
+if CheckAndFetchLuaParameterCount(L, 1, 3, call, params, cg) then
-AddCaption(lua_tostringA(L, 1), cWhiteColor, capgrpMessage)
+begin
-else if lua_gettop(L) = 3 then
+if cg = 1 then
-begin
+AddCaption(lua_tostringA(L, 1), cWhiteColor, capgrpMessage)
-cg:= LuaToCapGroupOrd(L, 3, call, params);
+else
-AddCaption(lua_tostringA(L, 1), lua_tointeger(L, 2) shr 8, TCapGroup(cg));
+begin
-end
+cg:= LuaToCapGroupOrd(L, 3, call, params);
-else
+if cg >= 0 then
-LuaParameterCountError(call, params, lua_gettop(L));
+AddCaption(lua_tostringA(L, 1), lua_tointeger(L, 2) shr 8, TCapGroup(cg));
+end
+end;
 lc_addcaption:= 0;
 end;
 function lc_campaignlock(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) = 1 then
+if CheckLuaParameterCount(L, 1, 'CampaignLock', 'TODO') then
 begin
-// to be done
+// TODO
-end
+end;
-else
-LuaParameterCountError('CampaignLock', 'TODO', lua_gettop(L));
 lc_campaignlock:= 0;
 end;
 function lc_campaignunlock(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) = 1 then
+if CheckLuaParameterCount(L, 1, 'CampaignUnlock', 'TODO') then
 begin
-// to be done
+// TODO
-end
+end;
-else
-LuaParameterCountError('CampaignUnlock', 'TODO', lua_gettop(L));
 lc_campaignunlock:= 0;
 end;
 function lc_spawnfakehealthcrate(L: Plua_State) : LongInt; Cdecl;
 var gear: PGear;
 begin
-if lua_gettop(L) <> 4 then
+if CheckLuaParameterCount(L, 4,'SpawnFakeHealthCrate', 'x, y, explode, poison') then
-begin
-LuaParameterCountError('SpawnFakeHealthCrate', 'x, y, explode, poison', lua_gettop(L));
-lua_pushnil(L);
-end
-else
 begin
 gear := SpawnFakeCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2),
 HealthCrate, lua_toboolean(L, 3), lua_toboolean(L, 4));
 lua_pushinteger(L, gear^.uid);
-end;
+end
+else
+lua_pushnil(L);
 lc_spawnfakehealthcrate := 1;
 end;
 function lc_spawnfakeammocrate(L: PLua_State): LongInt; Cdecl;
 var gear: PGear;
 begin
-if lua_gettop(L) <> 4 then
+if CheckLuaParameterCount(L, 4,'SpawnFakeAmmoCrate', 'x, y, explode, poison') then
-begin
-LuaParameterCountError('SpawnFakeAmmoCrate', 'x, y, explode, poison', lua_gettop(L));
-lua_pushnil(L);
-end
-else
 begin
 gear := SpawnFakeCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2),
 AmmoCrate, lua_toboolean(L, 3), lua_toboolean(L, 4));
 lua_pushinteger(L, gear^.uid);
-end;
+end
+else
+lua_pushnil(L);
 lc_spawnfakeammocrate := 1;
 end;
 function lc_spawnfakeutilitycrate(L: PLua_State): LongInt; Cdecl;
 var gear: PGear;
 begin
-if lua_gettop(L) <> 4 then
+if CheckLuaParameterCount(L, 4,'SpawnFakeUtilityCrate', 'x, y, explode, poison') then
-begin
-LuaParameterCountError('SpawnFakeUtilityCrate', 'x, y, explode, poison', lua_gettop(L));
-lua_pushnil(L);
-end
-else
 begin
 gear := SpawnFakeCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2),
 UtilityCrate, lua_toboolean(L, 3), lua_toboolean(L, 4));
 lua_pushinteger(L, gear^.uid);
-end;
+end
+else
+lua_pushnil(L);
 lc_spawnfakeutilitycrate := 1;
 end;
 function lc_spawnhealthcrate(L: Plua_State) : LongInt; Cdecl;
 var gear: PGear;
-var health: LongInt;
+var health, n: LongInt;
 begin
-if (lua_gettop(L) < 2) or (lua_gettop(L) > 3) then
+if CheckAndFetchLuaParameterCount(L, 2, 3, 'SpawnHealthCrate', 'x, y [, health]', n) then
 begin
-LuaParameterCountError('SpawnHealthCrate', 'x, y [, health]', lua_gettop(L));
+if n = 3 then
-lua_pushnil(L);
-end
-else
-begin
-if lua_gettop(L) = 3 then
 health:= lua_tointeger(L, 3)
 else
 health:= cHealthCaseAmount;
 gear := SpawnCustomCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2), HealthCrate, health, 0);
 if gear <> nil then
 lua_pushinteger(L, gear^.uid)
 else
 lua_pushnil(L);
-end;
+end
+else
+lua_pushnil(L);
 lc_spawnhealthcrate := 1;
 end;
 function lc_spawnammocrate(L: PLua_State): LongInt; Cdecl;
 var gear: PGear;
-begin
+n   : LongInt;
-if (lua_gettop(L) <> 3) and (lua_gettop(L) <> 4) then
+begin
-begin
+if CheckAndFetchLuaParameterCount(L, 3, 4, 'SpawnAmmoCrate', 'x, y, content [, amount]', n) then
-LuaParameterCountError('SpawnAmmoCrate', 'x, y, content [, amount]', lua_gettop(L));
+begin
-lua_pushnil(L);
+if n = 3 then
-end
-else
-begin
-if (lua_gettop(L) = 3) then
 gear := SpawnCustomCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2), AmmoCrate, lua_tointeger(L, 3), 0)
 else gear := SpawnCustomCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2), AmmoCrate, lua_tointeger(L, 3), lua_tointeger(L, 4));
 if gear <> nil then
 lua_pushinteger(L, gear^.uid)
 else
 lua_pushnil(L);
-end;
+end
+else
+lua_pushnil(L);
 lc_spawnammocrate := 1;
 end;
 function lc_spawnutilitycrate(L: PLua_State): LongInt; Cdecl;
 var gear: PGear;
-begin
+n   : LongInt;
-if (lua_gettop(L) <> 3) and (lua_gettop(L) <> 4) then
+begin
-begin
+if CheckAndFetchLuaParameterCount(L, 3, 4, 'SpawnUtilityCrate', 'x, y, content [, amount]', n) then
-LuaParameterCountError('SpawnUtilityCrate', 'x, y, content [, amount]', lua_gettop(L));
+begin
-lua_pushnil(L);
+if n = 3 then
-end
-else
-begin
-if (lua_gettop(L) = 3) then
 gear := SpawnCustomCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2), UtilityCrate, lua_tointeger(L, 3), 0)
 else gear := SpawnCustomCrateAt(lua_tointeger(L, 1), lua_tointeger(L, 2), UtilityCrate, lua_tointeger(L, 3), lua_tointeger(L, 4));
 if gear <> nil then
 lua_pushinteger(L, gear^.uid)
 else
 lua_pushnil(L);
-end;
+end
+else
+lua_pushnil(L);
 lc_spawnutilitycrate := 1;
 end;
 function lc_addgear(L : Plua_State) : LongInt; Cdecl;
 var gear : PGear;
 gt: TGearType;
 const
 call = 'AddGear';
 params = 'x, y, gearType, state, dx, dy, timer';
 begin
-if lua_gettop(L) <> 7 then
+if CheckLuaParameterCount(L, 7, call, params) then
-begin
-LuaParameterCountError(call, params, lua_gettop(L));
-lua_pushnil(L); // return value on stack (nil)
-end
-else
 begin
 t:= LuaToGearTypeOrd(L, 3, call, params);
 if t >= 0 then
 begin
 gt:= TGearType(t);
 lastGearByUID:= gear;
 lua_pushinteger(L, gear^.uid)
 end
 else
 lua_pushnil(L);
-end;
+end
+else
+lua_pushnil(L);
 lc_addgear:= 1; // 1 return value
 end;
 function lc_deletegear(L : Plua_State) : LongInt; Cdecl;
 var gear : PGear;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'DeleteGear', 'gearUid') then
-begin
-LuaParameterCountError('DeleteGear', 'gearUid', lua_gettop(L));
-end
-else
 begin
 gear:= GearByUID(lua_tointeger(L, 1));
 if gear <> nil then
 gear^.Message:= gear^.Message or gmDelete;
 end;
 const
 call = 'AddVisualGear';
 params = 'x, y, visualGearType, state, critical';
 begin
 uid:= 0;
-if lua_gettop(L) <> 5 then
+if CheckLuaParameterCount(L, 5, call, params) then
-begin
-LuaParameterCountError(call, params, lua_gettop(L));
-lua_pushnil(L); // return value on stack (nil)
-end
-else
 begin
 s:= LuaToVisualGearTypeOrd(L, 3, call, params);
 if s >= 0 then
 begin
 vgt:= TVisualGearType(s);
 vg:= AddVisualGear(x, y, vgt, s, c);
 if vg <> nil then
 begin
 lastVisualGearByUID:= vg;
 uid:= vg^.uid;
+lua_pushinteger(L, uid);
 end;
-end;
+end
-end;
+else
-lua_pushinteger(L, uid);
+lua_pushnil(L);
+end
+else
+lua_pushnil(L); // return value on stack (nil)
 lc_addvisualgear:= 1; // 1 return value
 end;
 function lc_deletevisualgear(L : Plua_State) : LongInt; Cdecl;
 var vg : PVisualGear;
 end;
 function lc_placesprite(L : Plua_State) : LongInt; Cdecl;
 var spr   : TSprite;
 lf    : Word;
-n : LongInt;
+i, n : LongInt;
 placed: boolean;
 const
 call = 'PlaceSprite';
-params = 'x, y, sprite, frameIdx [, landFlags]';
+params = 'x, y, sprite, frameIdx [, landFlags, ... ]';
 begin
 placed:= false;
-n:= lua_gettop(L);
+if CheckAndFetchLuaParameterCount(L, 4, call, params, n) then
-if (n < 4) or (n > 5) then
+begin
-LuaParameterCountError(call, params, lua_gettop(L))
+lf:= 0;
-else
-begin
+// accept any amount of landflags, loop is never executed if n>5
-// get landflags, if specified
+for i:= 5 to n do
-if n = 5 then
+lf:= lf or lua_tointeger(L, i);
-lf:= lua_tointeger(L, 5)
-else
-lf:= 0;
 n:= LuaToSpriteOrd(L, 3, call, params);
 if n >= 0 then
 begin
 spr:= TSprite(n);
 function lc_placegirder(L : Plua_State) : LongInt; Cdecl;
 var placed: boolean;
 begin
 placed:= false;
-if lua_gettop(L) <> 3 then
+if CheckLuaParameterCount(L, 3, 'PlaceGirder', 'x, y, frameIdx') then
-LuaParameterCountError('PlaceGirder', 'x, y, frameIdx', lua_gettop(L))
-else
 placed:= TryPlaceOnLand(
 lua_tointeger(L, 1) - SpritesData[sprAmGirder].Width div 2,
 lua_tointeger(L, 2) - SpritesData[sprAmGirder].Height div 2,
 sprAmGirder, lua_tointeger(L, 3), true, false);
 lc_placegirder:= 1
 end;
 function lc_getcurammotype(L : Plua_State): LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 0 then
+if CheckLuaParameterCount(L, 0, 'GetCurAmmoType', '') then
-LuaParameterCountError('GetCurAmmoType', '', lua_gettop(L))
-else
 lua_pushinteger(L, ord(CurrentHedgehog^.CurAmmoType));
 lc_getcurammotype := 1;
 end;
 function lc_savecampaignvar(L : Plua_State): LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 2 then
+if CheckLuaParameterCount(L, 2, 'SaveCampaignVar', 'varname, value') then
-LuaParameterCountError('SaveCampaignVar', 'varname, value', lua_gettop(L))
-else begin
 SendIPC('V!' + lua_tostring(L, 1) + ' ' + lua_tostring(L, 2) + #0);
-end;
 lc_savecampaignvar := 0;
 end;
 function lc_getcampaignvar(L : Plua_State): LongInt; Cdecl;
 begin
-if (lua_gettop(L) <> 1) then
+if CheckLuaParameterCount(L, 1, 'GetCampaignVar', 'varname') then
-LuaParameterCountError('GetCampaignVar', 'varname', lua_gettop(L))
-else
 SendIPCAndWaitReply('V?' + lua_tostring(L, 1) + #0);
 lua_pushstring(L, str2pchar(CampaignVariable));
 lc_getcampaignvar := 1;
 end;
 function lc_hidehog(L: Plua_State): LongInt; Cdecl;
 var gear: PGear;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'HideHog', 'gearUid') then
-LuaParameterCountError('HideHog', 'gearUid', lua_gettop(L))
-else
 begin
 gear:= GearByUID(lua_tointeger(L, 1));
 HideHog(gear^.hedgehog)
 end;
 lc_hidehog := 0;
 function lc_restorehog(L: Plua_State): LongInt; Cdecl;
 var i, h: LongInt;
 uid: LongWord;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'RestoreHog', 'gearUid') then
-LuaParameterCountError('RestoreHog', 'gearUid', lua_gettop(L))
-else
 begin
 uid:= LongWord(lua_tointeger(L, 1));
 if TeamsCount > 0 then
 for i:= 0 to Pred(TeamsCount) do
 for h:= 0 to cMaxHHIndex do
 // boolean TestRectForObstacle(x1, y1, x2, y2, landOnly)
 function lc_testrectforobstacle(L : Plua_State) : LongInt; Cdecl;
 var rtn: Boolean;
 begin
-if lua_gettop(L) <> 5 then
+if CheckLuaParameterCount(L, 5, 'TestRectForObstacle', 'x1, y1, x2, y2, landOnly') then
-begin
-LuaParameterCountError('TestRectForObstacle', 'x1, y1, x2, y2, landOnly', lua_gettop(L));
-lua_pushnil(L); // return value on stack (nil)
-end
-else
 begin
 rtn:= TestRectancleForObstacle(
 lua_tointeger(L, 1),
 lua_tointeger(L, 2),
 lua_tointeger(L, 3),
 lua_tointeger(L, 4),
 lua_toboolean(L, 5)
 );
 lua_pushboolean(L, rtn);
-end;
+end
+else
+lua_pushnil(L); // return value on stack (nil)
 lc_testrectforobstacle:= 1
 end;
 function lc_getgravity(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 0 then
+if CheckLuaParameterCount(L, 0, 'GetGravity', '') then
-LuaParameterCountError('GetGravity', '', lua_gettop(L))
+lua_pushinteger(L, hwRound(SignAs(_0_5, cGravity) + (cGravity * 50 / cMaxWindSpeed)));
-else if cGravity.isNegative then
-lua_pushinteger(L, hwRound(-_0_5 + (cGravity * 50 / cMaxWindSpeed)))
-else
-lua_pushinteger(L, hwRound( _0_5 + (cGravity * 50 / cMaxWindSpeed)));
 lc_getgravity:= 1
 end;
 function lc_setgravity(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'SetGravity', 'percent') then
-LuaParameterCountError('SetGravity', 'percent', lua_gettop(L))
-else
 begin
 cGravity:= _0_02 * lua_tointeger(L, 1) * cMaxWindSpeed;
 cGravityf:= 0.00025 * lua_tointeger(L, 1) * 0.02
 end;
 lc_setgravity:= 0
 end;
 function lc_setwaterline(L : Plua_State) : LongInt; Cdecl;
 var iterator: PGear;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'SetWaterLine', 'waterline') then
-LuaParameterCountError('SetWaterLine', 'waterline', lua_gettop(L))
-else
 begin
 cWaterLine:= lua_tointeger(L,1);
 AllInactive:= false;
 iterator:= GearsList;
 while iterator <> nil do
 end;
 function lc_setaihintsongear(L : Plua_State) : LongInt; Cdecl;
 var gear: PGear;
 begin
-if lua_gettop(L) <> 2 then
+if CheckLuaParameterCount(L, 2, 'SetAIHintOnGear', 'gearUid, aiHints') then
-LuaParameterCountError('SetAIHintOnGear', 'gearUid, aiHints', lua_gettop(L))
-else
 begin
 gear:= GearByUID(lua_tointeger(L, 1));
 if gear <> nil then
 gear^.aihints:= lua_tointeger(L, 2);
 end;
 end;
 function lc_hedgewarsscriptload(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'HedgewarsScriptLoad', 'scriptPath') then
-begin
+ScriptLoad(lua_tostring(L, 1))
-LuaParameterCountError('HedgewarsScriptLoad', 'scriptPath', lua_gettop(L));
+else
-lua_pushnil(L)
+lua_pushnil(L);
-end
-else
-ScriptLoad(lua_tostring(L, 1));
 lc_hedgewarsscriptload:= 0;
 end;
 function lc_declareachievement(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 4 then
+if CheckLuaParameterCount(L, 4, 'DeclareAchievement', 'achievementId, teamname, location, value') then
-LuaParameterCountError('DeclareAchievement', 'achievementId, teamname, location, value', lua_gettop(L))
-else
 declareAchievement(lua_tostring(L, 1), lua_tostring(L, 2), lua_tostring(L, 3), lua_tointeger(L, 4));
 lc_declareachievement:= 0
 end;
 // stuff for testing the lua API
 function lc_endluatest(L : Plua_State) : LongInt; Cdecl;
 begin
-if lua_gettop(L) <> 1 then
+if CheckLuaParameterCount(L, 1, 'EndLuaAPITest', 'LUA_API_TEST_SUCCESSFUL or LUA_API_TEST_FAILED') then
-begin
-LuaParameterCountError('EndLuaAPITest', 'LUA_API_TEST_SUCCESSFUL or LUA_API_TEST_FAILED', lua_gettop(L));
-lua_pushnil(L);
-lc_endluatest:= 0;
-end
-else
 begin
 WriteLnToConsole('Lua test finished');
 halt(lua_tointeger(L, 1));
-end;
+end
+else
+lua_pushnil(L);
+lc_endluatest:= 0;
 end;
 ///////////////////
 procedure ScriptPrintStack;
 var n, i : LongInt;

changeset 10284	e9c85a0acdd2
parent 10283	f5573ef8cda9
child 10285	03b615d3c6e1