Split to library. Reimplemented sample strategy in new state.

2 files changed, 39 insertions, 0 deletions

diff --git a/src/strategy/mod.rs b/src/strategy/mod.rs
new file mode 100644
index 0000000..ce8e751
--- /dev/null
+++ b/src/strategy/mod.rs
@@ -0,0 +1 @@
+pub mod sample;
diff --git a/src/strategy/sample.rs b/src/strategy/sample.rs
new file mode 100644
index 0000000..bd23916
--- /dev/null
+++ b/src/strategy/sample.rs
@@ -0,0 +1,38 @@
+use engine;
+use engine::command::*;
+
+
+pub fn choose_move(settings: &engine::settings::GameSettings, state: &engine::GameState) -> Command {
+    if state.player.can_afford_defence_buildings(settings) {
+        for y in 0..settings.size.y {
+            if is_under_attack(state, y) {
+                let p_options = state.unoccupied_player_cells_in_row(settings, y);
+                if let Some(&p) = p_options.first() {
+                    return Command::Build(p, BuildingType::Defense);
+                }
+            }
+        }
+    }
+
+    if state.player.can_afford_all_buildings(settings) {
+        let options = state.unoccupied_player_cells(settings);
+        let option = options.first();
+        let buildings = [BuildingType::Attack, BuildingType::Defense, BuildingType::Energy];
+        let building = buildings.first();
+        match (option, building) {
+            (Some(&p), Some(&building)) => Command::Build(p, building),
+            _ => Command::Nothing
+        }
+    }
+    else {
+        Command::Nothing
+    }
+}
+
+fn is_under_attack(state: &engine::GameState, y: u8) -> bool {
+    let attack = state.opponent_buildings.iter()
+        .any(|b| b.pos.y == y && b.weapon_damage > 0);
+    let defences = state.player_buildings.iter()
+        .any(|b| b.pos.y == y && b.health > 5);
+    attack && !defences
+}