Canvas: enable user to insert code at the beginning of the file.

Author: PhaserEditor2D

source/phasereditor/phasereditor.canvas.core/src/phasereditor/canvas/core/codegen/JSLikeCanvasCodeGenerator.java

@@ -66,17 +66,18 @@ public abstract class JSLikeCanvasCodeGenerator extends BaseCodeGenerator {
 	protected final String PRE_INIT_CODE_END = "/* --- pre-init-end --- */";
 	protected final String POST_INIT_CODE_BEGIN = "/* --- post-init-begin --- */";
 	protected final String POST_INIT_CODE_END = "/* --- post-init-end --- */";
+	protected final String START_GENERATED_CODE = "/* --- start generated code --- */";
 	protected final String END_GENERATED_CODE = "/* --- end generated code --- */";
 	protected final WorldModel _world;
 	protected final CanvasModel _model;
 	protected final EditorSettings _settings;
-	
+
 	public JSLikeCanvasCodeGenerator(CanvasModel model) {
 		_world = model.getWorld();
 		_settings = model.getSettings();
 		_model = model;
 	}
-	
+
 	public static class TextureArgs {
 		public String key;
 		public String frame = "null";
@@ -103,6 +104,18 @@ public static TextureArgs getTextureArgs(IAssetKey assetKey) {
 	 */
 	@Override
 	protected void internalGenerate() {
+		{
+			String content = getReplaceContent();
+			int i = content.indexOf(START_GENERATED_CODE);
+			if (i >= 0) {
+				line(content.substring(0, i) + START_GENERATED_CODE);
+			} else {
+				line(getYouCanInsertCodeHere("user code here"));
+				line(START_GENERATED_CODE);
+			}
+		}
+
+		line();
 		line("// Generated by " + LicCore.PRODUCT_NAME + " (Phaser v" + InspectCore.PHASER_VERSION + ")");
 		line();
 		line();
@@ -133,9 +146,9 @@ protected void internalGenerate() {
 
 	protected void generatePublicFields() {
 		getRootObjectsContainer().walk_skipGroupIfFalse(obj -> {
-			
+
 			generatePublicField(obj);
-			
+
 			return !obj.isPrefabInstance();
 		});
 	}
@@ -161,7 +174,7 @@ protected void generatePublicField(BaseObjectModel obj) {
 			}
 		}
 	}
-	
+
 	protected void generateObjectCreation() {
 		trim(() -> {
 			int i = 0;
@@ -544,7 +557,7 @@ private void generateSpriteProps(BaseSpriteModel model) {
 					if (anim.isKillOnComplete()) {
 						line(animvar + ".killOnComplete = true;");
 					}
-					
+
 					if (anim.isAutoPlay()) {
 						line(animvar + ".play();");
 					}

source/phasereditor/phasereditor.project.core/src/phasereditor/project/core/codegen/BaseCodeGenerator.java

@@ -65,6 +65,10 @@ public String getSectionContent(String openTag, String closeTag, String defaultC
 
 		return defaultContent;
 	}
+	
+	public String getReplaceContent() {
+		return _replace;
+	}
 
 	public void userCode(String text) {
 		String[] lines = text.split("\n");