TSL: Add `while` to `Loop()` (#30807)

src/nodes/utils/LoopNode.js

@@ -25,6 +25,16 @@ import { nodeObject, nodeArray } from '../tsl/TSLBase.js';
  * ```js
  * Loop( { start: 10 }, () => {} );
  * ```
+ * It is possible to execute with boolean values, similar to the `while` syntax.
+ * ```js
+ * const value = float( 0 ).toVar();
+ *
+ * Loop( value.lessThan( 10 ), () => {
+ *
+ * 	value.addAssign( 1 );
+ *
+ * } );
+ * ```
  * The module also provides `Break()` and `Continue()` TSL expression for loop control.
  * @augments Node
  */
@@ -133,15 +143,25 @@ class LoopNode extends Node {
 
 			const param = params[ i ];
 
-			let start = null, end = null, name = null, type = null, condition = null, update = null;
+			let isWhile = false, start = null, end = null, name = null, type = null, condition = null, update = null;
 
 			if ( param.isNode ) {
 
-				type = 'int';
-				name = this.getVarName( i );
-				start = '0';
-				end = param.build( builder, type );
-				condition = '<';
+				if ( param.getNodeType( builder ) === 'bool' ) {
+
+					isWhile = true;
+					type = 'bool';
+					end = param.build( builder, type );
+
+				} else {
+
+					type = 'int';
+					name = this.getVarName( i );
+					start = '0';
+					end = param.build( builder, type );
+					condition = '<';
+
+				}
 
 			} else {
 
@@ -187,41 +207,51 @@ class LoopNode extends Node {
 
 			}
 
-			const internalParam = { start, end, condition };
+			let loopSnippet;
 
-			//
+			if ( isWhile ) {
 
-			const startSnippet = internalParam.start;
-			const endSnippet = internalParam.end;
+				loopSnippet = `while ( ${ end } )`;
 
-			let declarationSnippet = '';
-			let conditionalSnippet = '';
-			let updateSnippet = '';
+			} else {
 
-			if ( ! update ) {
+				const internalParam = { start, end, condition };
 
-				if ( type === 'int' || type === 'uint' ) {
+				//
 
-					if ( condition.includes( '<' ) ) update = '++';
-					else update = '--';
+				const startSnippet = internalParam.start;
+				const endSnippet = internalParam.end;
 
-				} else {
+				let declarationSnippet = '';
+				let conditionalSnippet = '';
+				let updateSnippet = '';
+
+				if ( ! update ) {
+
+					if ( type === 'int' || type === 'uint' ) {
+
+						if ( condition.includes( '<' ) ) update = '++';
+						else update = '--';
 
-					if ( condition.includes( '<' ) ) update = '+= 1.';
-					else update = '-= 1.';
+					} else {
+
+						if ( condition.includes( '<' ) ) update = '+= 1.';
+						else update = '-= 1.';
+
+					}
 
 				}
 
-			}
+				declarationSnippet += builder.getVar( type, name ) + ' = ' + startSnippet;
 
-			declarationSnippet += builder.getVar( type, name ) + ' = ' + startSnippet;
+				conditionalSnippet += name + ' ' + condition + ' ' + endSnippet;
+				updateSnippet += name + ' ' + update;
 
-			conditionalSnippet += name + ' ' + condition + ' ' + endSnippet;
-			updateSnippet += name + ' ' + update;
+				loopSnippet = `for ( ${ declarationSnippet }; ${ conditionalSnippet }; ${ updateSnippet } )`;
 
-			const forSnippet = `for ( ${ declarationSnippet }; ${ conditionalSnippet }; ${ updateSnippet } )`;
+			}
 
-			builder.addFlowCode( ( i === 0 ? '\n' : '' ) + builder.tab + forSnippet + ' {\n\n' ).addFlowTab();
+			builder.addFlowCode( ( i === 0 ? '\n' : '' ) + builder.tab + loopSnippet + ' {\n\n' ).addFlowTab();
 
 		}