Add (statically-included) entity raws

Add a system for statically-included entity raws (which necessitated
making a deserializable existential Color struct) and test it out by
initializing the game (for now) with a single on-screen gormlak.

1 files changed, 43 insertions, 0 deletions

diff --git a/src/entities/creature.rs b/src/entities/creature.rs
new file mode 100644
index 000000000000..6ddeade21845
--- /dev/null
+++ b/src/entities/creature.rs
@@ -0,0 +1,43 @@
+use crate::display;
+use crate::entities::raws::CreatureType;
+use crate::entities::raws::EntityRaw;
+use crate::entities::{raw, Entity};
+use crate::types::Position;
+use std::io::{self, Write};
+
+pub struct Creature {
+    pub typ: &'static CreatureType<'static>,
+    pub position: Position,
+    pub hitpoints: u16,
+}
+
+impl Creature {
+    pub fn new_from_raw(name: &'static str, position: Position) -> Self {
+        match raw(name) {
+            EntityRaw::Creature(typ) => Self::new_with_type(typ, position),
+            _ => panic!("Invalid raw type for {:?}, expected Creature", name),
+        }
+    }
+
+    pub fn new_with_type(
+        typ: &'static CreatureType<'static>,
+        position: Position,
+    ) -> Self {
+        Creature {
+            typ,
+            position,
+            hitpoints: typ.max_hitpoints,
+        }
+    }
+}
+
+positioned!(Creature);
+positioned_mut!(Creature);
+
+impl Entity for Creature {}
+
+impl display::Draw for Creature {
+    fn do_draw(&self, out: &mut Write) -> io::Result<()> {
+        write!(out, "{}", self.typ.chr)
+    }
+}