Allow including other .ZS files in order to import other functions and variables

ZSharp/Main.cpp

@@ -139,7 +139,7 @@ boost::any EvalExpression(const string& ex, unordered_map<string, boost::any>& v
 	// If no operations are applied, then return self
 	if ((countOutsideParenthesis(expression, '+') == 0 && countOutsideParenthesis(expression, '-') == 0 && countOutsideParenthesis(expression, '*') == 0 && countOutsideParenthesis(expression, '/') == 0 && countOutsideParenthesis(expression, '^') == 0) || split(expression, '.')[0] == "ZS")
 	{
-		bool isFunc = IsFunction(split(expression, '(')[0]);
+		//bool isFunc = IsFunction(split(expression, '(')[0]);
 		if (isFunc && !inQuotes)
 		{
 			//cout << split(expression, '(')[0] << endl;
@@ -148,12 +148,11 @@ boost::any EvalExpression(const string& ex, unordered_map<string, boost::any>& v
 			while (y < expression.size() && expression[y] != ')')
 			{
 				argContents += expression[y];
-
 				y++;
 			}
 			return ExecuteFunction(split(expression, '(')[0], VarValues(split(argContents, ','), variableValues));
 		}
-		else if (split(expression, '.')[0] == "ZS" && !inQuotes)
+		else if (isZS && !inQuotes)
 		{
 			string argContents = "";
 			int y = indexInStr(expression, '(') + 1;
@@ -177,11 +176,11 @@ boost::any EvalExpression(const string& ex, unordered_map<string, boost::any>& v
 		if (expression[i] == '\"' && !isEscaped(newExpression, i))
 			inQuotes = !inQuotes;
 
-		if (isalpha(expression[i]))
+		if (isalpha(expression[i]) || expression[i] == '_')
 		{
 			string name = "";
 
-			while (i < expression.size() && (isalpha(expression[i]) || expression[i] == '.'))
+			while (i < expression.size() && (isalpha(expression[i]) || expression[i] == '.' || expression[i] == '_'))
 			{
 				name += expression[i];
 				i++;
@@ -426,7 +425,7 @@ boost::any ProcessLine(const vector<vector<string>>& words, int lineNum, unorder
 		return nullType;
 	}
 
-	// Check existing variables: To see if accessign class sub component
+	// Check existing variables: To see if accessing class sub component
 	else if (count(words.at(lineNum).at(0), '.') > 0 && IsVar(split(words.at(lineNum).at(0), '.')[0], variableValues) || IsVar(split(words.at(lineNum).at(0), '.')[0], globalVariableValues))
 	{
 		if (IsVar(split(words.at(lineNum).at(0), '.')[0], variableValues))
@@ -582,7 +581,7 @@ boost::any ExecuteFunction(const string& functionName, const vector<boost::any>&
 int parseZSharp(string script)
 {
 	script = replace(script, "    ", "\t"); // Replace spaces with tabs (not really required, and will break purposefull whitespace in strings etc.)
-	#if DEVELOPER_MESSAGES
+#if DEVELOPER_MESSAGES
 	InterpreterLog("Contents:\n" + script);
 #endif
 
@@ -631,7 +630,37 @@ int parseZSharp(string script)
 		}
 		else
 		{
-			if (words.at(lineNum).at(0) == "string") {
+			if (words.at(lineNum).at(0) == "include")
+			{
+				string scriptPath = StringRaw(words.at(lineNum).at(1));
+				string scriptTextContents;
+#if DEVELOPER_MESSAGES == true
+				InterpreterLog("Including from " + words.at(lineNum).at(1) + "...");
+#endif
+#if UNIX
+				// Get script contents as single string
+				auto ss = ostringstream{};
+				ifstream input_file(scriptPath);
+				ss << input_file.rdbuf();
+				scriptTextContents = ss.str();
+#if DEVELOPER_MESSAGES
+				InterpreterLog("Gather script contents...");
+#endif
+#elif WINDOWS
+				// Get script contents as single string
+				ifstream script(scriptPath);
+				stringstream scriptString;
+				scriptString << script.rdbuf();
+				scriptTextContents = scriptString.str();
+#if DEVELOPER_MESSAGES
+				InterpreterLog("Gather script contents...");
+#endif
+#endif
+				parseZSharp(scriptTextContents);
+			}
+
+
+			else if (words.at(lineNum).at(0) == "string") {
 				globalVariableValues[words.at(lineNum).at(1)] = StringRaw(words.at(lineNum).at(3));
 #if DEVELOPER_MESSAGES == true
 				InterpreterLog("Load script variable " + words.at(lineNum).at(1) + "...");
@@ -660,12 +689,6 @@ int parseZSharp(string script)
 		}
 	}
 
-#if DEVELOPER_MESSAGES
-	InterpreterLog("Start Main()");
-	#endif
-	// Executes main, which is the entry point function
-	ExecuteFunction("Main", vector<boost::any> {});
-
 	return 0;
 }
 
@@ -703,7 +726,7 @@ int main(int argc, char* argv[])
 		scriptTextContents = ss.str();
 #if DEVELOPER_MESSAGES
 		InterpreterLog("Gather script contents...");
-		#endif
+#endif
 
 		// Change the current working directory to that of the script
 		chdir(projectDirectory.c_str());
@@ -722,7 +745,7 @@ int main(int argc, char* argv[])
 		scriptTextContents = scriptString.str();
 #if DEVELOPER_MESSAGES
 		InterpreterLog("Gather script contents...");
-		#endif
+#endif
 
 		// Change the current working directory to that of the script
 		std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> converter;
@@ -742,26 +765,37 @@ int main(int argc, char* argv[])
 		exit(1);
 	}
 
-	#if DEVELOPER_MESSAGES
+#if DEVELOPER_MESSAGES
 	InterpreterLog("Parsing...");
-	#endif
-	// Start running the script
+#endif
+	// Parse the script
 	parseZSharp(scriptTextContents);
+#if DEVELOPER_MESSAGES
+	InterpreterLog("Start Main()");
+#endif
+	try
+	{
+		// Executes main, which is the entry point function
+		ExecuteFunction("Main", vector<boost::any> {});
+	}
+	catch (const std::exception&)
+	{
+		//Failed with error
+	}
 
 	// Entire script has been run, exit.
-	
 #if DEVELOPER_MESSAGES // If built with developer messages, then verify exit
 	cout << "Press Enter to Continue";
 	cin.ignore();
 	exit(1);
 #else
-	if(argc > 2)
+	if (argc > 2)
 	{
 		string a = argv[2];
 		std::transform(a.begin(), a.end(), a.begin(),
-    			[](unsigned char c){ return std::tolower(c); });
+			[](unsigned char c) { return std::tolower(c); });
 
-		if(a == "-ve") // If the '-ve' (verify exit) option is used, ask for verification on exit
+		if (a == "-ve") // If the '-ve' (verify exit) option is used, ask for verification on exit
 		{
 			cout << "Press Enter to Continue";
 			cin.ignore();

examples/Platformer/extra-include.zs

@@ -0,0 +1,5 @@
+
+func TestInclude()
+{
+	print "Hello World!"
+}

examples/Platformer/script.zs

@@ -1,11 +1,17 @@
 int g_screenw = 900
 int g_screenh = 600
 
-float g_playerMoveSpeed = 400
+float g_playerWalkSpeed = 400
+float g_playerRunSpeed = 700
 float g_jumpHeight = 20
+float g_currPlayerSpeed = 400
 
 bool g_running = false
 
+float g_gravitySpeed = -86
+
+include "./extra-include.zs"
+
 func Main()
 {
 	// Immediately creates the window, then Start(), then the game loop. The game loop calls Update() every frame
@@ -18,11 +24,11 @@ func Start()
 	float centerY = g_screenh / 2
 	global Vec2 g_screencenter = NVec2(centerX, centerY)
 	
-	Vec2 playerPos = NVec2(0, 0)
-	Vec2 playerScale = NVec2(16, 16)
+	Vec2 playerPos = g_screencenter
+	Vec2 playerScale = NVec2(40, 40)
 	global Sprite g_playerSprite = ZS.Graphics.Sprite("./square.png", playerPos, playerScale, 0)
 	
-	Vec2 groundPos = NVec2(0, -17)
+	Vec2 groundPos = NVec2(g_screencenter.x, 500)
 	Vec2 groundScale = NVec2(256, 16)
 	global Sprite g_groundSprite = ZS.Graphics.Sprite("./square.png", groundPos, groundScale, 0)
 	
@@ -36,42 +42,52 @@ func Update(deltaTime)
 {
 	float fps = 1 / deltaTime
 	print "FPS: " + fps
+	TestInclude()
 	
-	// Test automatic conversion from bool to int
-	int c = 0 + GetKey("A")
-	print "Test: " + 0 + c
+	//// Test automatic conversion from bool to int
+	//int c = GetKey("A")
+	//print "Test: " + c
+
+	// Shift key lets you sprint
+	g_running = GetKey("SHIFT_L")
+	
+	if g_running == true
+	{
+		g_currPlayerSpeed = g_playerRunSpeed
+	}
+	if g_running == false
+	{
+		g_currPlayerSpeed = g_playerWalkSpeed
+	}
 
 	// Move Left And Right
-	//
 	if GetKey("A") == true
 	{
 		float newY = g_playerSprite.position.y
 		
-		float newX = g_playerTargetPosition.x - g_playerMoveSpeed * deltaTime
+		float newX = g_playerTargetPosition.x - g_currPlayerSpeed * deltaTime
 		g_playerTargetPosition = NVec2(newX, newY)
 	}
 	if GetKey("D") == true
 	{
 		float newY = g_playerSprite.position.y
 		
-		float newX = g_playerTargetPosition.x + g_playerMoveSpeed * deltaTime
+		float newX = g_playerTargetPosition.x + g_currPlayerSpeed * deltaTime
 		g_playerTargetPosition = NVec2(newX, newY)
 	}
 	// Lerps from old position to destination smoothly
 	float oldX = g_playerSprite.position.x
 	float newX = g_playerTargetPosition.x
-	float stopSpeed = deltaTime * lerpSpeed
+	float stopSpeed = deltaTime * 7
 	float lerpedX = Lerp(oldX, newX, stopSpeed)
 	g_playerSprite.position = NVec2(lerpedX, newY)
 	
 	
 	// Finally draws all of the sprites
-	ZS.Graphics.Draw(playerSprite)
-	ZS.Graphics.Draw(groundSprite)
+	ZS.Graphics.Draw(g_playerSprite)
+	ZS.Graphics.Draw(g_groundSprite)
 	
-	ZS.Graphics.DrawText(instructionsText)
-	
-	HandleBallBounce()
+	ZS.Graphics.DrawText(g_instructionsText)
 }
 
 func Colliding(a, b)