PI is now a built-in constant, fixes #2134

modules/gdscript/gd_parser.cpp

@@ -267,6 +267,13 @@ GDParser::Node* GDParser::_parse_expression(Node *p_parent,bool p_static,bool p_
 			constant->value=tokenizer->get_token_constant();
 			tokenizer->advance();
 			expr=constant;
+		} else if (tokenizer->get_token()==GDTokenizer::TK_CONST_PI) {
+
+			//constant defined by tokenizer
+			ConstantNode *constant = alloc_node<ConstantNode>();
+			constant->value=Math_PI;
+			tokenizer->advance();
+			expr=constant;
 		} else if (tokenizer->get_token()==GDTokenizer::TK_PR_PRELOAD) {
 
 			//constant defined by tokenizer

modules/gdscript/gd_tokenizer.cpp

@@ -111,6 +111,7 @@ const char* GDTokenizer::token_names[TK_MAX]={
 "'?'",
 "':'",
 "'\\n'",
+"PI",
 "Error",
 "EOF",
 "Cursor"};
@@ -878,6 +879,7 @@ void GDTokenizerText::_advance() {
 								{TK_CF_RETURN,"return"},
 								{TK_CF_PASS,"pass"},
 								{TK_SELF,"self"},
+								{TK_CONST_PI,"PI"},
 								{TK_ERROR,NULL}
 							};
 
@@ -1044,7 +1046,7 @@ void GDTokenizerText::advance(int p_amount) {
 
 //////////////////////////////////////////////////////////////////////////////////////////////////////
 
-#define BYTECODE_VERSION 8
+#define BYTECODE_VERSION 9
 
 Error GDTokenizerBuffer::set_code_buffer(const Vector<uint8_t> & p_buffer) {
 

modules/gdscript/gd_tokenizer.h

@@ -119,6 +119,7 @@ public:
 		TK_QUESTION_MARK,
 		TK_COLON,
 		TK_NEWLINE,
+		TK_CONST_PI,
 		TK_ERROR,
 		TK_EOF,
 		TK_CURSOR, //used for code completion