Bringing in some more realistic textures that are open source from https://opengameart.org/content/nekkrobox-world-textures

sfmlcaster.cpp

@@ -57,8 +57,8 @@ double planeY = 0.66;
 #define gray_color(c) rgba_color(c, c, c, 255)
 
 std::vector<uint32_t> texture[8];
-#define texWidth 64 // must be power of two
-#define texHeight 64 // must be power of two
+#define texWidth 256 // must be power of two
+#define texHeight 256 // must be power of two
 
 #define pixcoord(X, Y) ((Y) * SCREEN_HEIGHT) + (X)
 
@@ -80,14 +80,14 @@ void load_textures() {
     texture[i].resize(texWidth * texHeight);
   }
 
-  loadImage(texture[0], "pics/eagle.png");
-  loadImage(texture[1], "pics/redbrick.png");
-  loadImage(texture[2], "pics/purplestone.png");
-  loadImage(texture[3], "pics/greystone.png");
-  loadImage(texture[4], "pics/bluestone.png");
-  loadImage(texture[5], "pics/mossy.png");
-  loadImage(texture[6], "pics/wood.png");
-  loadImage(texture[7], "pics/colorstone.png");
+  loadImage(texture[0], "pics/tile16.png");
+  loadImage(texture[1], "pics/tile02.png");
+  loadImage(texture[2], "pics/tile03.png");
+  loadImage(texture[3], "pics/tile32.png");
+  loadImage(texture[4], "pics/tile05.png");
+  loadImage(texture[5], "pics/tile17.png");
+  loadImage(texture[6], "pics/tile10.png");
+  loadImage(texture[7], "pics/tile01.png");
 }
 
 void draw_sfml_rect(sf::RenderWindow &window, sf::Vector2f pos, sf::Vector2f size, uint8_t color) {
@@ -274,7 +274,6 @@ void ray_casting(sf::RenderWindow &window, Matrix& map) {
     double texPos = (drawStart - PITCH - h / 2 + lineHeight / 2) * step;
 
     for(int y = drawStart; y < drawEnd; y++) {
-      // BUG? Why bitwise and here?
       int texY = (int)texPos & (texHeight - 1);
       texPos += step;
       uint32_t color = texture[texNum][texHeight * texY + texX];
@@ -315,9 +314,7 @@ void draw_ceiling_floor(sf::RenderWindow &window) {
       floorX += floorStepX;
       floorY += floorStepY;
 
-      int checkerBoardPattern = int(cellX + cellY) & 1;
-      int floorTexture = checkerBoardPattern == 0 ? 3 : 4;
-
+      int floorTexture = 3;
       int ceilingTexture = 6;
 
       uint32_t color;