feat: add tower detection

include/game/Towers.h

@@ -32,9 +32,9 @@ enum class TowerType : std::uint8_t {
     TowerCount
 };
 
-enum class TowerSize : bool {
-    Little = 0, // 3x3
-    Big,        // 5x5
+enum class TowerSize : std::uint8_t {
+    Little = 3, // 3x3
+    Big = 5,        // 5x5
 };
 
 enum class TowerPath : std::uint8_t {

include/game/World.h

@@ -162,6 +162,8 @@ public:
     bool CanPlaceLittleTower(const glm::vec2& worldPos, PlayerID player) const;
     bool CanPlaceBigTower(const glm::vec2& worldPos, PlayerID player) const;
 
+    TowerPtr GetTower(const glm::vec2& position); // returns null if no tower is here
+
     const std::unordered_map<ChunkCoord, ChunkPtr>& getChunks() const { return m_Chunks; }
 
     const Color& getSpawnColor(TeamColor color) const { return m_SpawnColorPalette[(std::size_t)color]; }

src/game/World.cpp

@@ -467,6 +467,23 @@ void World::cleanDeadMobs(){
     }
 }
 
+TowerPtr World::GetTower(const glm::vec2& position) {
+    for (TowerPtr tower : m_Towers) {
+        if (tower->getSize() == TowerSize::Big) {
+            if (tower->getX() - 2 <= position.x && tower->getX() + 3 >= position.x &&
+                tower->getY() - 2 <= position.y && tower->getY() + 3 >= position.y) {
+                return tower;
+            }
+        } else {
+            if (tower->getX() - 1 <= position.x && tower->getX() + 2 >= position.x &&
+                tower->getY() - 1 <= position.y && tower->getY() + 2 >= position.y) {
+                return tower;
+            }
+        }
+    }
+    return nullptr;
+}
+
 void World::OnArrowShot(MobPtr target, Tower* shooter) {
     bool explosiveArrows = shooter->getLevel().getPath() == TowerPath::Bottom;
     if (explosiveArrows) {