Example project is now runnable.

1 files changed, 48 insertions, 1 deletions

diff --git a/examples/text-adventure/side_effects.rs b/examples/text-adventure/side_effects.rs
index 51f1f4c..ed0f9e1 100644
--- a/examples/text-adventure/side_effects.rs
+++ b/examples/text-adventure/side_effects.rs
@@ -1 +1,48 @@
-//this module interprets the domain specific language.
\ No newline at end of file
+//! this module interprets the domain specific language as a text adventure.
+
+use crate::dsl::FreeSausageRoll;
+
+pub fn run<'a, 's:'a>(mut game : FreeSausageRoll<'a, 's, ()>) -> std::io::Result<()>{
+    //this function doesn't know who it is, or why it is here. It only knows it must deal.
+    //Deal with the few commands in the eDSL and nothing more.
+
+    //This would be easier to write recursively. However, in an actual project this might run for quite some time.
+    //Since we operate on the stack, let's rather be safe than sorry, and use a loop instead of recursion therefore.
+    while let FreeSausageRoll::Free(command) = game { 
+        game = match *command {
+            crate::dsl::SausageRoll::SayDialogueLine { speaker, text, mood, next } => {
+                println!("{} says: \"{}\" with {} on their face.", speaker.text_description(), text, mood.text_description());
+                next
+            },
+            crate::dsl::SausageRoll::GivePlayerOptions { options, next } => 
+            {
+                println!("Your options are:");
+                for (id, option) in options.iter().enumerate().map(|(i,o)| (i+1,o)){
+                    println!("{}: {}", id, option);
+                }
+
+                let mut input = String::new();
+                let mut chosen;
+                while let None = {
+                    input.clear();
+                    std::io::stdin().read_line(&mut input)?;
+                    chosen = input.trim().parse().ok().filter(|o : &usize| *o > 0 && *o <= options.len());
+                    chosen
+                } {
+                    println!("Invalid choice. Please select one of the options given above.");
+                }
+                println!();
+                next(chosen.unwrap()-1)
+            },
+            crate::dsl::SausageRoll::PresentLocation { location, next } => {
+                println!("{}", location.get_text_description());
+                next
+            },
+            crate::dsl::SausageRoll::Exposition { text, next } => {
+                println!("{}", text);
+                next
+            },
+        };
+    };
+    std::io::Result::Ok(())
+}
\ No newline at end of file