From 284cac8f4034f15e7edeba5c8232a770fc082e20 Mon Sep 17 00:00:00 2001
From: tom barrett <spalf0@gmail.com>
Date: Wed, 13 Feb 2019 13:25:00 -0600
Subject: added engine fuel and simplified/unified txrx from server

---
 src/modules/engines.rs    | 49 ++++++++++++++++++++++++++++++++++-------------
 src/modules/navigation.rs |  8 +++++---
 2 files changed, 41 insertions(+), 16 deletions(-)

(limited to 'src/modules')

diff --git a/src/modules/engines.rs b/src/modules/engines.rs
index 55b9af9..fa16bf9 100644
--- a/src/modules/engines.rs
+++ b/src/modules/engines.rs
@@ -1,22 +1,45 @@
+use crate::constants;
 use crate::mass::Mass;
 use crate::math::Vector;
 
+#[derive(Serialize, Deserialize, Debug, Clone)]
+pub enum EnginesStatus {
+    None,
+    ApproachingTargetVelocity,
+}
+
+impl Default for EnginesStatus {
+    fn default() -> Self {
+        EnginesStatus::None
+    }
+}
+
 #[derive(Serialize, Deserialize, Debug, Clone, Default)]
 pub struct Engines {
     acceleration: Vector,
+    target_velocity: Option<Vector>,
+    pub fuel: f64,
 }
 
 impl Engines {
     pub fn new() -> Engines {
         Engines {
             acceleration: Vector::default(),
+            target_velocity: None,
+            fuel: constants::SHIP_ENGINES_FUEL_START,
         }
     }
 
     pub fn recv_acceleration(&mut self) -> Vector {
         let acceleration = self.acceleration.clone();
         self.acceleration = Vector::default();
-        acceleration
+
+        if self.fuel - acceleration.magnitude() >= 0.0 {
+            self.fuel -= acceleration.magnitude();
+            acceleration
+        } else {
+            Vector::default()
+        }
     }
 
     pub fn give_client_data(
@@ -27,26 +50,26 @@ impl Engines {
         data: String,
     ) {
         let mut acceleration = Vector::default();
-        match data.as_bytes() {
-            b"5\n" => acceleration.a += 0.1,
-            b"0\n" => acceleration.a -= 0.1,
-            b"8\n" => acceleration.b += 0.1,
-            b"2\n" => acceleration.b -= 0.1,
-            b"4\n" => acceleration.c += 0.1,
-            b"6\n" => acceleration.c -= 0.1,
-            b"+\n" => acceleration = velocity * 0.05,
-            b"-\n" => {
+        match data.as_str() {
+            "5" => acceleration.x += 0.1,
+            "0" => acceleration.x -= 0.1,
+            "8" => acceleration.y += 0.1,
+            "2" => acceleration.y -= 0.1,
+            "4" => acceleration.z += 0.1,
+            "6" => acceleration.z -= 0.1,
+            "+" => acceleration = velocity * 0.05,
+            "-" => {
                 acceleration = velocity * -1.05;
             }
-            b"s\n" => {
+            "s" => {
                 acceleration = velocity * -1.0;
             }
-            b"c\n" => {
+            "c" => {
                 if let Some(target) = target {
                     acceleration = target.velocity.clone() - velocity;
                 }
             }
-            b"t\n" => {
+            "t" => {
                 if let Some(target) = target {
                     acceleration = (target.position.clone() - position) * 0.01;
                 }
diff --git a/src/modules/navigation.rs b/src/modules/navigation.rs
index 0e855f8..0e010cb 100644
--- a/src/modules/navigation.rs
+++ b/src/modules/navigation.rs
@@ -48,9 +48,11 @@ impl Navigation {
     }
 
     pub fn give_target(&mut self, target_name: String) {
-        self.start = Some(SystemTime::now());
-        self.status = NavigationStatus::Targeting;
-        self.target_name = Some(target_name);
+        if !target_name.is_empty() {
+            self.start = Some(SystemTime::now());
+            self.status = NavigationStatus::Targeting;
+            self.target_name = Some(target_name);
+        }
     }
 
     pub fn verify_target(&mut self, ship_position: Vector, masses: &HashMap<String, Mass>) {
-- 
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