moved textures into their own classes, better tilemapping

tilemap.cpp

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "datatypes.cpp"
+#include "helpers.cpp"
+
+namespace UwU {
+  class Tilemap {
+    public:
+      Tilemap() {
+        this->tilemap = new uint16_t[16384]; // the map of tile positions 128x128 8x8 tiles from a 512x512 bitmap space
+      }
+      uint16_t* tilemap;
+
+      Coord2 map(uint16_t u, uint16_t v) {
+        // returns uv coordinates that point to a specific pixel of a specific tile on a tilesheet buffer
+        uint16_t mapX = (u & 0x03f8) >> 3;
+        uint16_t mapY = (v & 0x03f8) << 4;
+        uint16_t tileIndex = tilemap[mapY + mapX];
+        uint16_t u1 = (tileIndex & 0x003f) << 3;
+        u1 += (u & 0x0007);
+        uint16_t v1 = (tileIndex & 0x0fc0) >> 3;
+        v1 += (v & 0x0007);
+        return Coord2(u1, v1);
+     }
+  };
+}