cute_tiled: Use uint32_t for hex color values (#364)

Co-authored-by: RandyGaul <[email protected]>

cute_tiled.h

@@ -105,6 +105,8 @@
 
 #if !defined(CUTE_TILED_H)
 
+#include <stdint.h> // uint32_t
+
 // Read this in the event of errors
 extern const char* cute_tiled_error_reason;
 extern int cute_tiled_error_line;
@@ -320,8 +322,8 @@ struct cute_tiled_layer_t
 	float opacity;                       // Value between 0 and 1.
 	int property_count;                  // Number of elements in the `properties` array.
 	cute_tiled_property_t* properties;   // Array of properties.
-	int transparentcolor;                // Hex-formatted color (#RRGGBB or #AARRGGBB) (optional).
-	int tintcolor;                       // Hex-formatted color (#RRGGBB or #AARRGGBB) (optional).
+	uint32_t transparentcolor;           // Hex-formatted color (#AARRGGBB) (optional).
+	uint32_t tintcolor;                  // Hex-formatted color (#AARRGGBB) (optional).
 	cute_tiled_string_t type;            // `tilelayer`, `objectgroup`, `imagelayer` or `group`.
 	cute_tiled_string_t image;           // An image filepath. Used if layer is type `imagelayer`.
 	int visible;                         // 0 or 1. Whether layer is shown or hidden in editor.
@@ -393,7 +395,7 @@ struct cute_tiled_tileset_t
 	int tileoffset_y;                    // Pixel offset to align tiles to the grid.
 	cute_tiled_tile_descriptor_t* tiles; // Linked list of tile descriptors. Can be NULL.
 	int tilewidth;                       // Maximum width of tiles in this set.
-	int transparentcolor;                // Hex-formatted color (#RRGGBB or #AARRGGBB) (optional).
+	uint32_t transparentcolor;           // Hex-formatted color (#AARRGGBB) (optional).
 	cute_tiled_string_t type;            // `tileset` (for tileset files, since 1.0).
 	cute_tiled_string_t source;          // Relative path to tileset, when saved externally from the map file.
 	cute_tiled_tileset_t* next;          // Pointer to next tileset. NULL if final tileset.
@@ -1642,8 +1644,22 @@ static int cute_tiled_read_hex_int_internal(cute_tiled_map_internal_t* m, int* o
 
 	val = CUTE_TILED_STRTOULL(m->in, &end, 16);
 	CUTE_TILED_CHECK(m->in != end, "Invalid integer found during parse.");
+
+	// Count the length to determine if we need to force AARRGGBB, instead of RRGGBB.
+	int length = 0;
+	while (m->in != end) {
+		m->in++;
+		length++;
+	}
+	*out = (uint32_t)val;
+
+	// When less than 6 characters, force an alpha channel of 0xFF.
+	if (length <= 6) {
+		uint32_t alpha = 0xFF << 24;
+		*out = (*out & 0x00FFFFFF) | alpha;
+	}
+
 	m->in = end;
-	*out = (int)val;
 	return 1;
 
 cute_tiled_err: