Implement a few player pickups

src/resources/stats.rs

@@ -10,18 +10,65 @@ pub struct Stats {
 type PlayerSurvived = bool;
 
 impl Stats {
-    pub fn take_gems(&mut self, num_gems: u32) -> PlayerSurvived {
-        let new_num_gems = self.gems as i64 - num_gems as i64;
-        if new_num_gems <= 0 {
-            self.gems = 0;
-            false
-        } else {
-            self.gems = new_num_gems as u32;
-            true
-        }
-    }
-
     pub fn add_score(&mut self, score: u32) {
         self.score += score;
     }
+
+    pub fn take_score(&mut self, score: u32) {
+        if let Some(result) = self.score.checked_sub(score) {
+            self.score = result;
+        } else {
+            self.score = 0;
+        }
+    }
+
+    pub fn give_gems(&mut self, num_gems: u32) {
+        self.gems += num_gems;
+    }
+
+    pub fn take_gems(&mut self, num_gems: u32) -> PlayerSurvived {
+        if let Some(result) = self.gems.checked_sub(num_gems) {
+            self.gems = result;
+            true
+        } else {
+            self.gems = 0;
+            false
+        }
+    }
+
+    pub fn give_whips(&mut self, num_whips: u32) {
+        self.whips += num_whips;
+    }
+
+    pub fn take_whips(&mut self, num_whips: u32) {
+        if let Some(result) = self.whips.checked_sub(num_whips) {
+            self.whips = result;
+        } else {
+            self.whips = 0;
+        }
+    }
+
+    pub fn give_teleports(&mut self, num_teleports: u32) {
+        self.teleports += num_teleports;
+    }
+
+    pub fn take_teleports(&mut self, num_teleports: u32) {
+        if let Some(result) = self.teleports.checked_sub(num_teleports) {
+            self.teleports = result;
+        } else {
+            self.teleports = 0;
+        }
+    }
+
+    pub fn give_keys(&mut self, num_keys: u32) {
+        self.keys += num_keys;
+    }
+
+    pub fn take_keys(&mut self, num_keys: u32) {
+        if let Some(result) = self.keys.checked_sub(num_keys) {
+            self.keys = result;
+        } else {
+            self.keys = 0;
+        }
+    }
 }