Level exports - tiles, nametables, collision

src/reskit/level/converter.rs

@@ -1,23 +1,23 @@
 use std::{error::Error, fs::read_to_string};
-use image::DynamicImage;
+use image::{DynamicImage, GenericImageView};
 use roxmltree::Node;
 use crate::reskit::utility::print_warning;
 use super::ecs;
 
 #[derive(Debug)]
 pub struct TiledTilemap {
-    tileset: TiledTileset,
+    pub tileset: TiledTileset,
-    layers: Vec<Layer>,
+    pub layers: Vec<Layer>,
     ecs: Vec<ecs::Entity>,
-    width: usize,
+    pub width: usize,
-    height: usize,
+    pub height: usize,
-    tile_width: usize,
+    pub tile_width: usize,
-    tile_height: usize
+    pub tile_height: usize
 }
 
 #[derive(Debug)]
 pub struct TiledTileset {
-    image: DynamicImage
+    pub image: DynamicImage
 }
 
 #[derive(Debug)]
@@ -156,6 +156,10 @@ pub fn get_tiled_tilemap( path: &str ) -> Result<TiledTilemap, Box<dyn Error>> {
         let image = tileset.descendants().find( | node | node.tag_name() == "image".into() ).ok_or( "invalid file: no image object" )?;
         let image = image::open( image.attribute( "source" ).ok_or( "invalid file: no source attribute on image" )? )?;
 
+        // Image must be a multiple of 8 (md system)
+        if image.width() % 8 != 0 { return Err( "invalid file: tileset width not multiple of 8" )? }
+        if image.height() % 8 != 0 { return Err( "invalid file: tileset height not multiple of 8" )? }
+
         // Get the layers
         let layers: Vec<Layer> = map.descendants()
                                          .filter( | node | node.tag_name() == "layer".into() )

src/reskit/level/mod.rs

@@ -1,2 +1,3 @@
 pub mod converter;
 pub mod ecs;
+pub mod system;

src/reskit/level/system.rs

@@ -0,0 +1,152 @@
+use std::{error::Error, convert::TryInto};
+use crate::reskit::tileset::image_to_tiles;
+use super::converter::{TiledTilemap, Layer, SystemPlane};
+
+/**
+ * Output the .bin file (using `tileset` tool to build it) containing each of the tiles
+ * in the Tiled Editor tileset.
+ */
+pub fn get_tiles( tilemap: &TiledTilemap ) -> Result<Vec<u8>, Box<dyn Error>> {
+    let mut palette: [u16; 16] = [ 0; 16 ];
+    let mut all_tiles: Vec<u8> = Vec::new();
+
+    for tile_y in 0..tilemap.tile_height {
+        for tile_x in 0..tilemap.tile_width {
+            let tile = tilemap.tileset.image.clone().crop(
+                tile_x as u32,
+                tile_y as u32,
+                tilemap.tile_width as u32,
+                tilemap.tile_height as u32
+            );
+
+            let tile_bin = image_to_tiles(
+                &tile,
+                &mut palette,
+                "tile"
+            );
+
+            all_tiles.extend( tile_bin );
+        }
+    }
+
+    // Define result and write palette to top of result
+    let mut result: Vec<u8> = Vec::new();
+	for i in 0..palette.len() {
+		let bytes = palette[ i ].to_be_bytes();
+		for i in 0..2 {
+			result.push( bytes[ i ] );
+		}
+	}
+
+    // Extend all tiles onto result
+    result.extend( all_tiles );
+
+    Ok( result )
+}
+
+/**
+ * Output the .map file defining the hardware tilemap for the given Tiled Tilemap.
+ * In `--system md`, this outputs tilemap B and then tilemap A
+ */
+pub fn get_tilemap( tilemap: &TiledTilemap ) -> Result<Vec<u8>, Box<dyn Error>> {
+    let layer_b: Option<&Layer> = tilemap.layers.iter().find( | layer | matches!( layer, Layer::Tile { system_plane: SystemPlane::MdPlaneB, tiles: _ } ) );
+    let layer_a: Option<&Layer> = tilemap.layers.iter().find( | layer | matches!( layer, Layer::Tile { system_plane: SystemPlane::MdPlaneA, tiles: _ } ) );
+
+    let md_height_per_tile = tilemap.tile_height / 8;
+    let md_width_per_tile = tilemap.tile_width / 8;
+
+    // Each entry in a `--system md` tilemap is 16 bits
+    let mut nametable: Vec<u16> = vec![ 0; ( tilemap.width * md_width_per_tile ) * ( tilemap.height * md_height_per_tile ) ];
+
+    if let Some( layer_b ) = layer_b {
+        let layer_b = match layer_b {
+            Layer::Tile { system_plane: _, tiles } => tiles,
+            _ => return Err( "internal error: invalid object type" )?
+        };
+
+        for y in 0..tilemap.height {
+            for x in 0..tilemap.width {
+                let target_tile: u32 = *layer_b.get( ( y * tilemap.width ) + x ).ok_or( "internal error: invalid data in tilemap" )?;
+                let target_tile: u16 = target_tile.try_into()?;
+                if target_tile > 0 {
+                    let wide_tile_size = md_height_per_tile as u16 * md_width_per_tile as u16;
+                    let source_tile = ( target_tile - 1 ) * wide_tile_size;
+                    let x = x * md_width_per_tile;
+                    let y = y * md_height_per_tile;
+
+                    // From the starting point of x, y "stamp" the target tile's indices
+                    let mut revolving_counter = 0;
+                    for y_stamp in y..( y + md_height_per_tile ) {
+                        for x_stamp in x..( x + md_width_per_tile ) {
+                            nametable[ ( y_stamp * ( tilemap.width * md_width_per_tile ) ) + x_stamp ] = source_tile + revolving_counter;
+                            revolving_counter = ( revolving_counter + 1 ) % wide_tile_size;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // Just do the same for layer a
+    // Copy pasted because i'm lazy and tired
+    if let Some( layer_a ) = layer_a {
+        let layer_a = match layer_a {
+            Layer::Tile { system_plane: _, tiles } => tiles,
+            _ => return Err( "internal error: invalid object type" )?
+        };
+
+        for y in 0..tilemap.height {
+            for x in 0..tilemap.width {
+                let target_tile: u32 = *layer_a.get( ( y * tilemap.width ) + x ).ok_or( "internal error: invalid data in tilemap" )?;
+                let target_tile: u16 = target_tile.try_into()?;
+                if target_tile > 0 {
+                    let wide_tile_size = md_height_per_tile as u16 * md_width_per_tile as u16;
+                    let source_tile = ( target_tile - 1 ) * wide_tile_size;
+                    let x = x * md_width_per_tile;
+                    let y = y * md_height_per_tile;
+
+                    // From the starting point of x, y "stamp" the target tile's indices
+                    let mut revolving_counter = 0;
+                    for y_stamp in y..( y + md_height_per_tile ) {
+                        for x_stamp in x..( x + md_width_per_tile ) {
+                            nametable[ ( y_stamp * ( tilemap.width * md_width_per_tile ) ) + x_stamp ] = source_tile + revolving_counter;
+                            revolving_counter = ( revolving_counter + 1 ) % wide_tile_size;
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    // Convert the u16's to a series of u8 data
+    let mut result: Vec<u8> = Vec::new();
+    for i in 0..nametable.len() {
+		let bytes = nametable[ i ].to_be_bytes();
+		for i in 0..2 {
+			result.push( bytes[ i ] );
+		}
+    }
+    Ok( result )
+}
+
+/**
+ * Get the .lvc collision map (u8 sized for the map dimensions, collision areas are either 0 or 1)
+ */
+pub fn get_collision_map( tilemap: &TiledTilemap ) -> Result<Vec<u8>, Box<dyn Error>> {
+    let mut result: Vec<u8> = Vec::new();
+
+    let collision: Option<&Layer> = tilemap.layers.iter().find( | layer | matches!( layer, Layer::Collision { tiles: _ } ) );
+    if let Some( collision ) = collision {
+        let collision = match collision {
+            Layer::Collision { tiles } => tiles,
+            _ => return Err( "internal error: invalid object type" )?
+        };
+
+        for collision_data in collision {
+            let collision_data: u8 = if *collision_data > 0 { 1 } else { 0 };
+            result.push( collision_data );
+        }
+    }
+
+    Ok( result )
+}

src/reskit/tileset.rs

@@ -1,11 +1,11 @@
 use crate::reskit::utility;
-use std::process::exit;
+use std::{process::exit, error::Error};
 use std::fs;
 use std::fs::File;
 use std::io::Write;
 use image::{ GenericImageView, DynamicImage };
 
-fn color_to_palette( r: u16, g: u16, b: u16, palette: &mut [u16; 16] ) -> u32 {
+pub fn color_to_palette( r: u16, g: u16, b: u16, palette: &mut [u16; 16] ) -> u32 {
 	let final_val =
 		( ( r & 0x00F0 ) >> 4 ) |
 		( g & 0x00F0 ) |
@@ -41,7 +41,7 @@ fn get_pixel( image: &DynamicImage, palette: &mut [u16; 16], x: u32, y: u32 ) ->
 	color_to_palette( pixel[ 0 ].into(), pixel[ 1 ].into(), pixel[ 2 ].into(), palette )
 }
 
-fn output_bin( image_filename: &str, output_filename: &str, palette: [u16; 16], body: Vec<u8> ) {
+pub fn output_bin( output_filename: &str, palette: [u16; 16], body: Vec<u8> ) -> Result<(), Box<dyn Error>> {
 	let mut output_palette: Vec< u8 > = Vec::new();
 	for i in 0..palette.len() {
 		let bytes = palette[ i ].to_be_bytes();
@@ -54,13 +54,14 @@ fn output_bin( image_filename: &str, output_filename: &str, palette: [u16; 16],
 	if let Ok( mut output_file ) = output_try {
 		output_file.write( &output_palette ).unwrap();
 		output_file.write( &body ).unwrap();
-		utility::print_good( format!( "converted file {}", image_filename ).as_str() );
+
+		Ok( () )
 	} else {
-		utility::print_error( format!( "could not open filename for output {}", output_filename ).as_str() );
+		return Err( format!( "could not open filename for output {}", output_filename ).as_str() )?;
 	}
 }
 
-fn output_inc( image_filename: &str, output_filename: &str, palette: [u16; 16], body: Vec<u8> ) {
+pub fn output_inc( output_filename: &str, palette: [u16; 16], body: Vec<u8> ) -> Result<(), Box<dyn Error>> {
 	let mut output_palette: Vec< u8 > = Vec::new();
 	for i in 0..palette.len() {
 		let bytes = palette[ i ].to_be_bytes();
@@ -111,22 +112,19 @@ fn output_inc( image_filename: &str, output_filename: &str, palette: [u16; 16],
 	fs::write( output_filename.to_string() + ".h", output_h ).expect( "Could not write header file" );
 	fs::write( output_filename.to_string() + ".c", output_c ).expect( "Could not write source file" );
 
-	utility::print_good( format!( "converted file {}", image_filename ).as_str() );
+	Ok( () )
 }
 
-pub fn generate( image_filename: &str, output_filename: &str, output_mode: &str, tile_order: &str ) {
+pub fn image_to_tiles( img: &DynamicImage, palette: &mut [u16; 16], tile_order: &str ) -> Vec<u8> {
-	let img = image::open( image_filename );
-	if let Ok( img ) = img {
 	let ( mut max_x, mut max_y ) = img.dimensions();
 	if max_x % 8 != 0 { max_x = ( 8 * ( max_x / 8 ) ) + ( 8 - ( max_x % 8 ) ); }
 	if max_y % 8 != 0 {	max_y = ( 8 * ( max_y / 8 ) ) + ( 8 - ( max_y % 8 ) ); }
 
-		let mut palette: [u16; 16] = [ 0; 16 ];
+	let mut body: Vec<u8> = Vec::new();
-		let mut body: Vec< u8 > = Vec::new();
 
 	if tile_order == "sprite" {
 		/*
-			 * Tile order:
+		 * Sprite order:
 		 * 1 3
 		 * 2 4
 		 */
@@ -136,7 +134,7 @@ pub fn generate( image_filename: &str, output_filename: &str, output_mode: &str,
 					let mut series: u32 = 0;
 
 					for cell_x in 0..8 {
-							let nibble: u32 = get_pixel( &img, &mut palette, cell_x + x, cell_y + y ) << ( ( 7 - cell_x ) * 4 );
+						let nibble: u32 = get_pixel( &img, palette, cell_x + x, cell_y + y ) << ( ( 7 - cell_x ) * 4 );
 						series = series | nibble;
 					}
 
@@ -159,7 +157,7 @@ pub fn generate( image_filename: &str, output_filename: &str, output_mode: &str,
 					let mut series: u32 = 0;
 
 					for cell_x in 0..8 {
-							let nibble: u32 = get_pixel( &img, &mut palette, cell_x + x, cell_y + y ) << ( ( 7 - cell_x ) * 4 );
+						let nibble: u32 = get_pixel( &img, palette, cell_x + x, cell_y + y ) << ( ( 7 - cell_x ) * 4 );
 						series = series | nibble;
 					}
 
@@ -172,10 +170,27 @@ pub fn generate( image_filename: &str, output_filename: &str, output_mode: &str,
 		}
 	}
 
+	body
+}
+
+pub fn generate( image_filename: &str, output_filename: &str, output_mode: &str, tile_order: &str ) {
+	let img = image::open( image_filename );
+	if let Ok( img ) = img {
+		let mut palette: [u16; 16] = [ 0; 16 ];
+		let body = image_to_tiles( &img, &mut palette, tile_order );
+
 		if output_mode == "bin" {
-			output_bin( image_filename, output_filename, palette, body );
+			if let Err( err ) = output_bin( output_filename, palette, body ) {
+				utility::print_error( &format!( "{}", err ) );
+			}
+
+			utility::print_good( format!( "converted file {}", image_filename ).as_str() );
 		} else if output_mode == "inc" {
-			output_inc( image_filename, output_filename, palette, body );
+			if let Err( err ) = output_inc( output_filename, palette, body ) {
+				utility::print_error( &format!( "{}", err ) );
+			}
+
+			utility::print_good( format!( "converted file {}", image_filename ).as_str() );
 		} else {
 			utility::print_error( format!( "invalid output mode {}", output_mode ).as_str() );
 		}