src/actions.rs 4.1 K · 136 lines · raw · history

1 use bevy::{input::InputSystems, prelude::*};
2
3 use crate::sim::SimSpeed;
4
5 pub struct ActionsPlugin;
6
7 impl Plugin for ActionsPlugin {
8 fn build(&self, app: &mut App) {
9 app.add_message::<Action>()
10 .add_systems(PreUpdate, keyboard_actions.after(InputSystems));
11 }
12 }
13
14 #[derive(Message, Debug, Clone, Copy, PartialEq, Eq)]
15 pub enum Action {
16 TogglePause,
17 SetSpeed(SimSpeed),
18 ToggleStockpileTool,
19 ToggleFarmTool,
20 CycleBuildTool,
21 ToggleDesignateTool,
22 Cancel,
23 NewWorld,
24 ToggleUi,
25 ZoomIn,
26 ZoomOut,
27 }
28
29 pub const KEYBINDS: [(KeyCode, Action); 14] = [
30 (KeyCode::Space, Action::TogglePause),
31 (KeyCode::Digit1, Action::SetSpeed(SimSpeed::Normal)),
32 (KeyCode::Digit2, Action::SetSpeed(SimSpeed::Fast)),
33 (KeyCode::Digit3, Action::SetSpeed(SimSpeed::Fastest)),
34 (KeyCode::Digit4, Action::SetSpeed(SimSpeed::Max)),
35 (KeyCode::KeyZ, Action::ToggleStockpileTool),
36 (KeyCode::KeyF, Action::ToggleFarmTool),
37 (KeyCode::KeyB, Action::CycleBuildTool),
38 (KeyCode::KeyX, Action::ToggleDesignateTool),
39 (KeyCode::Escape, Action::Cancel),
40 (KeyCode::KeyR, Action::NewWorld),
41 (KeyCode::KeyH, Action::ToggleUi),
42 (KeyCode::Equal, Action::ZoomIn),
43 (KeyCode::Minus, Action::ZoomOut),
44 ];
45
46 impl Action {
47 pub fn label(self) -> &'static str {
48 match self {
49 Action::TogglePause => "Pause",
50 Action::SetSpeed(SimSpeed::Normal) => "1x",
51 Action::SetSpeed(SimSpeed::Fast) => "3x",
52 Action::SetSpeed(SimSpeed::Fastest) => "6x",
53 Action::SetSpeed(SimSpeed::Max) => "Max",
54 Action::ToggleStockpileTool => "Stockpile",
55 Action::ToggleFarmTool => "Farm",
56 Action::CycleBuildTool => "Build",
57 Action::ToggleDesignateTool => "Mark",
58 Action::Cancel => "Cancel",
59 Action::NewWorld => "New map",
60 Action::ToggleUi => "Hide",
61 Action::ZoomIn => "+",
62 Action::ZoomOut => "-",
63 }
64 }
65
66 pub fn key(self) -> Option<KeyCode> {
67 KEYBINDS
68 .iter()
69 .find(|(_, action)| *action == self)
70 .map(|(key, _)| *key)
71 }
72
73 pub fn key_label(self) -> String {
74 match self.key() {
75 Some(KeyCode::Space) => "Space".into(),
76 Some(KeyCode::Escape) => "Esc".into(),
77 Some(KeyCode::Equal) => "=".into(),
78 Some(KeyCode::Minus) => "-".into(),
79 Some(key) => format!("{key:?}")
80 .trim_start_matches("Digit")
81 .trim_start_matches("Key")
82 .to_string(),
83 None => String::new(),
84 }
85 }
86 }
87
88 fn keyboard_actions(keys: Res<ButtonInput<KeyCode>>, mut actions: MessageWriter<Action>) {
89 for (key, action) in KEYBINDS {
90 if keys.just_pressed(key) {
91 actions.write(action);
92 }
93 }
94 }
95
96 #[cfg(test)]
97 mod tests {
98 use super::*;
99
100 #[test]
101 fn pressing_a_bound_key_triggers_its_action() {
102 let mut app = App::new();
103 app.init_resource::<ButtonInput<KeyCode>>()
104 .add_message::<Action>()
105 .add_systems(Update, keyboard_actions);
106 app.world_mut()
107 .resource_mut::<ButtonInput<KeyCode>>()
108 .press(KeyCode::Digit3);
109 app.update();
110 let actions: Vec<Action> = app
111 .world_mut()
112 .resource_mut::<Messages<Action>>()
113 .drain()
114 .collect();
115 assert_eq!(actions, vec![Action::SetSpeed(SimSpeed::Fastest)]);
116 }
117
118 #[test]
119 fn every_action_has_exactly_one_key() {
120 for (_, action) in KEYBINDS {
121 let bound = KEYBINDS.iter().filter(|(_, a)| *a == action).count();
122 assert_eq!(bound, 1, "{action:?}");
123 }
124 let mut keys: Vec<_> = KEYBINDS.iter().map(|(k, _)| format!("{k:?}")).collect();
125 keys.sort();
126 keys.dedup();
127 assert_eq!(keys.len(), KEYBINDS.len());
128 }
129
130 #[test]
131 fn key_labels_are_short() {
132 assert_eq!(Action::SetSpeed(SimSpeed::Fast).key_label(), "2");
133 assert_eq!(Action::ToggleStockpileTool.key_label(), "Z");
134 assert_eq!(Action::Cancel.key_label(), "Esc");
135 }
136 }