Add a warning about build tools version changes to the Android build script[ci skip]

This should not move on the first tick. Also in vanilla, the projectile makes a movement before dissipating from hitting the wall.

app/app/build.gradle

@@ -5,6 +5,12 @@ plugins {
 
 android {
     namespace "io.github.doukutsu_rs"
+
+    /**
+     * NOTE: If you want to change the versions of packages required for the build
+     * (e.g. build tools, compile SDK, NDK) or add new ones,
+     * make the appropriate changes in packages.txt. Otherwise CI could break.
+     */
     compileSdkVersion 33
     buildToolsVersion "33.0.0"
     ndkVersion "25.2.9519653"

src/game/npc/ai/curly.rs

@@ -296,6 +296,9 @@ impl NPC {
             }
 
             self.anim_rect = state.constants.npc.n123_curly_boss_bullet[self.direction as usize];
+        } else {
+            self.x += self.vel_x;
+            self.y += self.vel_y;
         }
 
         if match self.direction {
@@ -312,8 +315,6 @@ impl NPC {
             return Ok(());
         }
 
-        self.x += self.vel_x;
-        self.y += self.vel_y;
 
         Ok(())
     }