clean: restructuring

Got the best grade possible on this game :)
- Re-introduce folder structure (folders were not permitted by the task for some reason)

src/blockRegistry.hpp

@@ -0,0 +1,63 @@
+#pragma once
+#include <vector>
+#include <string>
+#include "block.hpp"
+
+using std::vector;
+using std::string;
+
+class BlockRegistry {
+public:
+    Block AIR = Block(Identifier("adventura", "air"), ' ', BlockSettingsBuilder().nonSolid().build());
+    Block WATER = Block(Identifier("adventura", "water"), '~', Color::BRIGHT_BLUE, BlockSettingsBuilder().nonSolid().build());
+    Block PLATFORM = Block(Identifier("adventura", "platform"), '-', BlockSettingsBuilder().build());
+    Block LADDER = Block(Identifier("adventura", "ladder"), 'H', Color::BRIGHT_MAGENTA, BlockSettingsBuilder().climbableFromBottom().climbableFromTop().build());
+    Block START = Block(Identifier("adventura", "start"), 'S', BlockSettingsBuilder().nonSolid().build());
+    Block GOAL = Block(Identifier("adventura", "goal"), 'O', Color::BRIGHT_GREEN, BlockSettingsBuilder().nonSolid().build());
+    Block WALL = Block(Identifier("adventura", "wall"), '0', BlockSettingsBuilder().collidable().build());
+    Block SPIKE = Block(Identifier("adventura", "spike"), '^', Color::BRIGHT_RED, BlockSettingsBuilder().lethal().build());
+    Block BOX = Block(Identifier("adventura", "box"), 'x', Color::BRIGHT_CYAN, BlockSettingsBuilder().pushable().collidable().gravity().build());
+    Block SAND = Block(Identifier("adventura", "sand"), '*', Color::BRIGHT_YELLOW, BlockSettingsBuilder().brittle().gravity().build());
+
+    /**
+     * Constructor for BlockRegistry. Registers all built-in blocks.
+     */
+    BlockRegistry() {
+        registerBlock(AIR);
+        registerBlock(WATER);
+        registerBlock(PLATFORM);
+        registerBlock(LADDER);
+        registerBlock(START);
+        registerBlock(GOAL);
+        registerBlock(WALL);
+        registerBlock(SPIKE);
+        registerBlock(BOX);
+        registerBlock(SAND);
+    }
+
+    /**
+     * Gets a block by its encoding.
+     * 
+     * If the block is not registered, a non-solid decoration block is created for it.
+     * 
+     * @param encoding The encoding of the block to get.
+     * @return The block with the given encoding.
+     */
+    const Block getByEncoding(char encoding) {
+        for (Block block : registeredBlocks) {
+            if (block.getEncoding() == encoding) return block;
+        }
+        return Block(Identifier("decoration", string(1, encoding)), encoding, BlockSettingsBuilder().nonSolid().build()); // Keep other characters as decoration
+    }
+
+private:
+    /**
+     * Registers a block in the registry.
+     * 
+     * @param block The block to register.
+     */
+    void registerBlock(Block& block) {
+        registeredBlocks.push_back(block);
+    }
+    vector<Block> registeredBlocks;
+};