Let CI override version displayed in menu

.appveyor.yml

@@ -35,6 +35,7 @@ cache:
 #  - cargo test --verbose --all --no-fail-fast
 
 build_script:
+  - set DRS_BUILD_VERSION_OVERRIDE=%APPVEYOR_BUILD_VERSION%
   - cargo build --release --bin doukutsu-rs
   - mkdir release
   - copy target\release\doukutsu-rs.exe release

src/common.rs

@@ -1,19 +1,23 @@
 use std::cmp::Ordering;
 use std::fmt;
 
-use ggez::GameError;
-use ggez::GameError::InvalidValue;
+use lazy_static::lazy_static;
 use num_traits::{AsPrimitive, Num};
 use serde::{de, Deserialize, Deserializer, Serialize, Serializer};
 use serde::de::{SeqAccess, Visitor};
 use serde::ser::SerializeTupleStruct;
 
 use crate::bitfield;
-use crate::macros::fmt::Formatter;
 
 /// Multiply cave story degrees (0-255, which corresponds to 0°-360°) with this to get
 /// respective value in radians.
 pub const CDEG_RAD: f64 = std::f64::consts::PI / 128.0;
+lazy_static! {
+    pub static ref VERSION_BANNER: String = {
+        let version = option_env!("DRS_BUILD_VERSION_OVERRIDE").unwrap_or(env!("CARGO_PKG_VERSION"));
+        format!("doukutsu-rs {}", version)
+    };
+}
 
 bitfield! {
   #[derive(Clone, Copy)]

src/lib.rs

@@ -163,7 +163,6 @@ impl Game {
     fn key_down_event(&mut self, key_code: KeyCode, _key_mod: KeyMods, repeat: bool) {
         if repeat { return; }
 
-        // todo: proper keymaps?
         let state = &mut self.state;
         match key_code {
             KeyCode::F7 => { state.set_speed(1.0) }

src/scene/title_scene.rs

@@ -1,7 +1,7 @@
 use ggez::{Context, GameResult, graphics};
 use ggez::graphics::Color;
 
-use crate::common::Rect;
+use crate::common::{Rect, VERSION_BANNER};
 use crate::menu::{Menu, MenuEntry, MenuSelectionResult};
 use crate::scene::Scene;
 use crate::shared_game_state::{SharedGameState, TimingMode};
@@ -75,7 +75,6 @@ impl TitleScene {
     }
 }
 
-static ENGINE_VERSION: &str = "doukutsu-rs 0.1.0";
 // asset copyright for freeware version
 static COPYRIGHT_PIXEL: &str = "2004.12  Studio Pixel";
 // asset copyright for Nicalis
@@ -235,7 +234,7 @@ impl Scene for TitleScene {
             batch.draw(ctx)?;
         }
 
-        self.draw_text_centered(ENGINE_VERSION, state.canvas_size.1 - 15.0, state, ctx)?;
+        self.draw_text_centered(VERSION_BANNER.as_str(), state.canvas_size.1 - 15.0, state, ctx)?;
 
         if state.constants.is_switch {
             self.draw_text_centered(COPYRIGHT_NICALIS_SWITCH, state.canvas_size.1 - 30.0, state, ctx)?;