Add: Script to padding to tilemaps

ShellScripts/tilemap-add-padding.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+# Input parameters
+input_image="$1"  # Input tilemap image
+output_image="$2" # Output image with transparent pixels
+tile_width="$3"   # Width of each tile
+tile_height="$4"  # Height of each tile
+
+# Get the dimensions of the input image
+image_width=$(identify -format "%w" "$input_image")
+image_height=$(identify -format "%h" "$input_image")
+
+# Calculate the number of tiles in both directions
+tiles_across=$((image_width / tile_width))
+tiles_down=$((image_height / tile_height))
+
+# New image size (considering the 1 pixel padding between tiles)
+new_width=$((tiles_across * (tile_width + 1) - 1))
+new_height=$((tiles_down * (tile_height + 1) - 1))
+
+# Create a blank canvas with a transparent background
+convert -size "${new_width}x${new_height}" xc:none blank_canvas.png
+
+# Iterate through each tile in the tilemap
+for ((y = 0; y < tiles_down; y++)); do
+  for ((x = 0; x < tiles_across; x++)); do
+    # Extract the tile from the original image
+    tile_x=$((x * tile_width))
+    tile_y=$((y * tile_height))
+    convert "$input_image" -crop "${tile_width}x${tile_height}+$tile_x+$tile_y" "tile_${x}_${y}.png"
+
+    # Place the tile on the new image, accounting for the 1-pixel padding
+    new_tile_x=$((x * (tile_width + 1)))
+    new_tile_y=$((y * (tile_height + 1)))
+    composite -geometry "+${new_tile_x}+${new_tile_y}" "tile_${x}_${y}.png" blank_canvas.png blank_canvas.png
+  done
+done
+
+# Save the final image
+mv blank_canvas.png "$output_image"
+
+# Clean up temporary tiles
+rm tile_*.png
+
+echo "Output saved to $output_image"