diff --git a/README.md b/README.md
index b4f25ac..2790da2 100644
--- a/README.md
+++ b/README.md
@@ -2,10 +2,10 @@
 
 A very cool language
 
-## Huh?
+## Features
 * Clean indentation-based syntax
 * Compiles to x86_64 Assembly
-* Almost works
+* Sometimes works
 * Has the pipe operator
 
 ## Syntax
diff --git a/examples/raylib.zr b/examples/raylib.zr
index b06737f..e394609 100644
--- a/examples/raylib.zr
+++ b/examples/raylib.zr
@@ -4,17 +4,39 @@ func main[] : I64
     let rl: Ptr = c.dlopen("libraylib.so", 2)
 
     let rl.InitWindow: Ptr = c.dlsym(rl, "InitWindow")
+    let rl.SetTargetFPS: Ptr = c.dlsym(rl, "SetTargetFPS")
     let rl.WindowShouldClose: Ptr = c.dlsym(rl, "WindowShouldClose")
     let rl.BeginDrawing: Ptr = c.dlsym(rl, "BeginDrawing")
     let rl.EndDrawing: Ptr = c.dlsym(rl, "EndDrawing")
     let rl.ClearBackground: Ptr = c.dlsym(rl, "ClearBackground")
     let rl.CloseWindow: Ptr = c.dlsym(rl, "CloseWindow")
+    let rl.DrawRectangle: Ptr = c.dlsym(rl, "DrawRectangle")
+    let rl.IsKeyDown: Ptr = c.dlsym(rl, "IsKeyDown")
+
+    let rl.KEY_W: I64 = 87
+    let rl.KEY_S: I64 = 83
+    let rl.KEY_A: I64 = 65
+    let rl.KEY_D: I64 = 68
+
+    let x: I64 = 200
+    let y: I64 = 200
 
     rl.InitWindow(800, 600, "Hello, World!")
+    rl.SetTargetFPS(60)
 
     while !rl.WindowShouldClose()
+        if rl.IsKeyDown(rl.KEY_W) & 255
+            y = y - 10
+        if rl.IsKeyDown(rl.KEY_S) & 255
+            y = y + 10
+        if rl.IsKeyDown(rl.KEY_A) & 255
+            x = x - 10
+        if rl.IsKeyDown(rl.KEY_D) & 255
+            x = x + 10
+
         rl.BeginDrawing()
-        rl.ClearBackground(4278190335) // 0xff0000ff
+        rl.ClearBackground(0xffffffff)
+        rl.DrawRectangle(x, y, 100, 100, 0xff0000ff)
         rl.EndDrawing()
 
     rl.CloseWindow()
\ No newline at end of file
diff --git a/src/tokenizer.rs b/src/tokenizer.rs
index 1afb2d2..50bec4d 100644
--- a/src/tokenizer.rs
+++ b/src/tokenizer.rs
@@ -232,7 +232,7 @@ impl Tokenizer {
                 self.advance();
                 self.add_token(TokenType::String);
             }
-            ' ' | '\t' | '\r' => {}
+            ' ' | '\r' => {}
             '\n' => {
                 self.loc.line += 1;
                 self.loc.column = 1;
@@ -294,29 +294,31 @@ impl Tokenizer {
     }
 
     fn scan_number(&mut self) {
-        while self.peek().is_ascii_digit() {
-            self.advance();
-        }
-
-        if self.peek() == '.'
-            && (self.current + 1 >= self.source.len())
-            && self.source[self.current + 1].is_ascii_digit()
-        {
-            self.advance();
+        if self.match_char('x') {
+            while self.peek().is_ascii_hexdigit() {
+                self.advance();
+            }
+        } else {
             while self.peek().is_ascii_digit() {
                 self.advance();
             }
+
+            if self.peek() == '.'
+                && self.current + 1 < self.source.len()
+                && self.source[self.current + 1].is_ascii_digit()
+            {
+                self.advance();
+                while self.peek().is_ascii_digit() {
+                    self.advance();
+                }
+            }
         }
 
         self.add_token(TokenType::Number);
     }
 
     fn scan_identifier(&mut self) {
-        while self.peek().is_alphanumeric()
-            || self.peek() == '_'
-            || self.peek() == '.'
-            || self.peek() == '!'
-        {
+        while self.peek().is_alphanumeric() || self.peek() == '_' || self.peek() == '.' {
             self.advance();
         }
 
@@ -343,6 +345,7 @@ impl Tokenizer {
             false
         } else {
             self.current += 1;
+            self.loc.column += 1;
             true
         }
     }