Stored MethodCallInfo and FieldCallInfo properly for method call args, and underlined them when errored for 2 error types; wrong method call args count and wrong arg type

src/main/java/noppes/npcs/client/gui/util/script/interpreter/FieldInfo.java

@@ -125,4 +125,18 @@ public final class FieldInfo {
     public int hashCode() {
         return name.hashCode() * 31 + scope.ordinal();
     }
+
+    /**
+     * Wrapper class that holds both FieldInfo and MethodCallInfo for a variable usage.
+     * This is used when a variable is used as an argument to a method call.
+     */
+    public static class ArgInfo {
+        public final FieldInfo fieldInfo;
+        public final MethodCallInfo methodCallInfo;
+
+        public ArgInfo(FieldInfo fieldInfo, MethodCallInfo methodCallInfo) {
+            this.fieldInfo = fieldInfo;
+            this.methodCallInfo = methodCallInfo;
+        }
+    }
 }

src/main/java/noppes/npcs/client/gui/util/script/interpreter/MethodCallInfo.java

@@ -202,6 +202,7 @@ public class MethodCallInfo {
     public boolean hasArgTypeError() {
         return !this.argumentTypeErrors.isEmpty();
     }
+
     public boolean hasArgTypeError(Token t) {
         for (ArgumentTypeError ate : this.argumentTypeErrors) {
             if (ate.getArg().equals(t)) {
@@ -211,6 +212,10 @@ public class MethodCallInfo {
         return false;
     }
 
+    public boolean hasArgCountError(Token t) {
+        return hasArgCountError() && t.isMethodCall();
+    }
+
     /**
      * Check if this is a static access error (underline method name).
      */

src/main/java/noppes/npcs/client/gui/util/script/interpreter/ScriptDocument.java

@@ -1,6 +1,5 @@
 package noppes.npcs.client.gui.util.script.interpreter;
 
-import net.minecraft.client.Minecraft;
 import noppes.npcs.client.ClientProxy;
 
 import java.util.*;
@@ -74,6 +73,9 @@ public class ScriptDocument {
     // Local variables per method (methodStartOffset -> {varName -> FieldInfo})
     private final Map<Integer, Map<String, FieldInfo>> methodLocals = new HashMap<>();
 
+    // Method calls - stores all parsed method call information
+    private final List<MethodCallInfo> methodCalls = new ArrayList<>();
+
     // Excluded regions (strings/comments) - positions where other patterns shouldn't match
     private final List<int[]> excludedRanges = new ArrayList<>();
 
@@ -180,6 +182,7 @@ public class ScriptDocument {
         excludedRanges.clear();
         methodLocals.clear();
         scriptTypes.clear();
+        methodCalls.clear();
 
         // Phase 1: Find excluded regions (strings/comments)
         findExcludedRanges();
@@ -858,13 +861,14 @@ public class ScriptDocument {
         // Numbers
         addPatternMarks(marks, NUMBER_PATTERN, TokenType.NUMBER);
 
+        // Method calls (parse before variables so we can attach context)
+        markMethodCalls(marks);
+
         // Variables and fields
         markVariables(marks);
 
         // Chained field accesses (e.g., mc.player.world, this.field)
         markChainedFieldAccesses(marks);
-
-        markMethodCalls(marks);
         
         // Imported class usages
         markImportedClassUsages(marks);
@@ -1321,6 +1325,9 @@ public class ScriptDocument {
                         arguments, receiverType, resolvedMethod, isStaticAccess
                     );
                     callInfo.validate();
+
+                    // Store in collection for later lookup
+                    methodCalls.add(callInfo);
                     
                     // Always mark method call as green (METHOD_CALL), with error info attached for underline
                     // The MethodCallInfo is attached so rendering can draw curly underline if there's an error
@@ -1349,6 +1356,9 @@ public class ScriptDocument {
                             arguments, null, resolvedMethod
                         );
                         callInfo.validate();
+
+                        // Store in collection for later lookup
+                        methodCalls.add(callInfo);
                         
                         // Always mark method call as green (METHOD_CALL), with error info attached for underline
                         marks.add(new ScriptLine.Mark(nameStart, nameEnd, TokenType.METHOD_CALL, callInfo));
@@ -1422,6 +1432,25 @@ public class ScriptDocument {
         return !ident.isEmpty() && Character.isUpperCase(ident.charAt(0));
     }
 
+    /**
+     * Find the MethodCallInfo that contains the given position as an argument.
+     * Returns null if the position is not inside any method call's argument list.
+     */
+    private MethodCallInfo findMethodCallContainingPosition(int position) {
+        for (MethodCallInfo call : methodCalls) {
+            // Check if position is within the argument list (between open and close parens)
+            if (position >= call.getOpenParenOffset() && position <= call.getCloseParenOffset()) {
+                // Check if it's within any of the arguments
+                for (MethodCallInfo.Argument arg : call.getArguments()) {
+                    if (position >= arg.getStartOffset() && position <= arg.getEndOffset()) {
+                        return call;
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
     /**
      * Find the matching closing parenthesis for an opening parenthesis.
      * Handles nested parentheses, strings, and comments.
@@ -1951,6 +1980,8 @@ public class ScriptDocument {
 
             // Find containing method
             MethodInfo containingMethod = findMethodAtPosition(position);
+            // Check if this variable is an argument to a method call
+            MethodCallInfo callInfo = findMethodCallContainingPosition(position);
 
             // For uppercase identifiers, only process if it's a known field
             // Otherwise, let type handling (markImportedClassUsages) handle it
@@ -1970,15 +2001,17 @@ public class ScriptDocument {
                     FieldInfo localInfo = locals.get(name);
                     // Only highlight if the position is after the declaration
                     if (localInfo.isVisibleAt(position)) {
-                        marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.LOCAL_FIELD, localInfo));
+                        Object metadata = callInfo != null ? new FieldInfo.ArgInfo(localInfo, callInfo) : localInfo;
+                        marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.LOCAL_FIELD, metadata));
                         continue;
                     }
                 }
-
+            } else {
                 // Check global fields
                 if (globalFields.containsKey(name)) {
                     FieldInfo fieldInfo = globalFields.get(name);
-                    marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.GLOBAL_FIELD, fieldInfo));
+                    Object metadata = callInfo != null ? new FieldInfo.ArgInfo(fieldInfo, callInfo) : fieldInfo;
+                    marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.GLOBAL_FIELD, metadata));
                     continue;
                 }
 
@@ -1987,22 +2020,7 @@ public class ScriptDocument {
                     continue;
 
                 // Unknown variable inside method - mark as undefined
-                marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.UNDEFINED_VAR));
-            } else {
-                // Outside any method
-                // Check global fields
-                if (globalFields.containsKey(name)) {
-                    FieldInfo fieldInfo = globalFields.get(name);
-                    marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.GLOBAL_FIELD, fieldInfo));
-                    continue;
-                }
-
-                // Skip uppercase if not a known field - type handling will deal with it
-                if (isUppercase)
-                    continue;
-
-                // Unknown variable outside method - mark as undefined
-                marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.UNDEFINED_VAR));
+                marks.add(new ScriptLine.Mark(m.start(1), m.end(1), TokenType.UNDEFINED_VAR, callInfo));
             }
         }
     }

src/main/java/noppes/npcs/client/gui/util/script/interpreter/ScriptLine.java

@@ -1,6 +1,5 @@
 package noppes.npcs.client.gui.util.script.interpreter;
 
-import net.minecraft.client.gui.Gui;
 import noppes.npcs.client.ClientProxy;
 import org.lwjgl.opengl.GL11;
 
@@ -144,6 +143,10 @@ public class ScriptLine {
                 if (mark.metadata != null) {
                     if (mark.metadata instanceof TypeInfo) {
                         token.setTypeInfo((TypeInfo) mark.metadata);
+                    } else if (mark.metadata instanceof FieldInfo.ArgInfo) {
+                        FieldInfo.ArgInfo ctx = (FieldInfo.ArgInfo) mark.metadata;
+                        token.setFieldInfo(ctx.fieldInfo);
+                        token.setMethodCallInfo(ctx.methodCallInfo);
                     } else if (mark.metadata instanceof FieldInfo) {
                         token.setFieldInfo((FieldInfo) mark.metadata);
                     } else if (mark.metadata instanceof MethodInfo) {
@@ -206,7 +209,6 @@ public class ScriptLine {
         int lastIndex = 0;
 
         // Track positions for underlines
-        List<int[]> underlines = new ArrayList<>(); // [startX, endX, color]
         int currentX = x;
 
         for (Token t : tokens) {
@@ -222,18 +224,10 @@ public class ScriptLine {
             // Track underline position if token has one
             if (t.hasUnderline()) {
                 int tokenWidth = ClientProxy.Font.width(t.getText());
-                underlines.add(new int[]{currentX, currentX + tokenWidth, t.getUnderlineColor()});
+                int currentY = y + ClientProxy.Font.height() - 1;
+                drawCurlyUnderline(currentX + 1, currentY, tokenWidth + 1, t.getUnderlineColor());
             }
 
-            if (t.getMethodCallInfo() != null) {
-                MethodCallInfo callInfo = t.getMethodCallInfo();
-                if (callInfo.hasArgTypeError(t)) {
-                    underlines.add(
-                            new int[]{currentX, currentX + ClientProxy.Font.width(t.getText()), t.getUnderlineColor()});
-                }
-            }
-
-        
             // Append the colored token
             builder.append(COLOR_CHAR)
                    .append(t.getColorCode())
@@ -252,11 +246,6 @@ public class ScriptLine {
 
         // Draw the text
         ClientProxy.Font.drawString(builder.toString(), x, y, defaultColor);
-
-        // Draw curly underlines for error tokens
-        for (int[] ul : underlines) {
-            drawCurlyUnderline(ul[0], y + ClientProxy.Font.height() - 1, ul[1] - ul[0], ul[2]);
-        }
     }
 
     /**
@@ -288,12 +277,12 @@ public class ScriptLine {
 
         GL11.glBegin(GL11.GL_LINE_STRIP);
         // Wave parameters: 2 pixels amplitude, 4 pixels wavelength
-        int waveHeight = 2;
+        int waveHeight = 1;
         int waveLength = 4;
         for (int i = 0; i <= width; i++) {
             // Create a sine-like wave pattern
             double phase = (double) i / waveLength * Math.PI * 2;
-            int yOffset = (int) (Math.sin(phase) * waveHeight);
+            float yOffset = (float) (Math.sin(phase) * waveHeight) - 0.5f;
             GL11.glVertex2f(x + i, y + yOffset);
         }
         GL11.glEnd();

src/main/java/noppes/npcs/client/gui/util/script/interpreter/Token.java

@@ -26,7 +26,7 @@ public class Token {
     
     // Rendering flags
     private boolean hasUnderline;     // True if this token should be underlined (for errors)
-    private int underlineColor;       // Color of the underline (if any)
+    private int underlineColor = 0xFF5555;       // Color of the underline (if any)
 
     // Navigation - set by ScriptLine
     private Token prev;
@@ -119,8 +119,21 @@ public class Token {
     public MethodCallInfo getMethodCallInfo() { return methodCallInfo; }
     public ImportData getImportData() { return importData; }
     public ScriptLine getParentLine() { return parentLine; }
-    public boolean hasUnderline() { return hasUnderline; }
-    public int getUnderlineColor() { return underlineColor; }
+
+    public boolean hasUnderline() {
+        if (methodCallInfo != null) {
+            if (methodCallInfo.hasArgCountError(this))
+                return true;
+            else if (methodCallInfo.hasArgTypeError(this)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public int getUnderlineColor() {
+        return underlineColor;
+    }
 
     // ==================== SETTERS ====================