Saving and loading chunks actually works now

game/math.odin

@@ -1,8 +1,8 @@
 package game
 
 Vec2i :: struct {
-    x: i32,
-    y: i32,
+    x: int,
+    y: int,
 }
 
 vec2i_to_vec2 :: proc(v2i:Vec2i) -> [2]f32 {
@@ -10,7 +10,7 @@ vec2i_to_vec2 :: proc(v2i:Vec2i) -> [2]f32 {
 }
 
 vec2_to_vec2i :: proc(v2:[2]f32) -> Vec2i {
-    return {i32(v2.x), i32(v2.y)}
+    return {int(v2.x), int(v2.y)}
 }
 
 to_bytes :: proc(v: $T) -> [size_of(T)]u8 {

game/player.odin

@@ -28,32 +28,35 @@ handle_player_camera :: proc(p:^Player) {
 player_update :: proc(p : ^Player, w: ^World) {
     handle_player_input(p,w)
     handle_player_camera(p)
-
+    
+    if rl.IsKeyPressed(.SPACE) {
+        set_tile(w, tree_tile, vec2_to_vec2i(get_player_grid_position(p)))
+    }
     
 }
 
 load_nearby_chunks :: proc(w:^World, player_pos:rl.Vector2) {
-    player_chunk_pos := world_pos_to_chunk_pos(player_pos)
+    // player_chunk_pos := world_pos_to_chunk_pos(player_pos)
 
-    chunk_radius := 2 // Adjust based on the camera size
+    // chunk_radius := 2 // Adjust based on the camera size
 
-    for x := -chunk_radius; x <= chunk_radius; x += 1 {
-        for y := -chunk_radius; y <= chunk_radius; y += 1 {
-            chunk_pos := Vec2i{player_chunk_pos.x + x, player_chunk_pos.y + y}
-            get_chunk(w, chunk_pos) // Ensures chunk is loaded or generated
-        }
-    }
+    // for x := -chunk_radius; x <= chunk_radius; x += 1 {
+    //     for y := -chunk_radius; y <= chunk_radius; y += 1 {
+    //         chunk_pos := Vec2i{player_chunk_pos.x + x, player_chunk_pos.y + y}
+    //         get_chunk(w, chunk_pos) // Ensures chunk is loaded or generated
+    //     }
+    // }
 }
 
 unload_far_chunks :: proc(w: ^World, player_pos: Vec2i) {
-    for chunk_pos in w.chunks {
-        dist_x := abs(chunk_pos.x - player_pos.x)
-        dist_y := abs(chunk_pos.y - player_pos.y)
+    // for chunk_pos in w.chunks {
+    //     dist_x := abs(chunk_pos.x - player_pos.x)
+    //     dist_y := abs(chunk_pos.y - player_pos.y)
 
-        if dist_x > CHUNK_UNLOAD_DISTANCE || dist_y > CHUNK_UNLOAD_DISTANCE {
-            unload_chunk(chunk_pos, w)
-        }
-    }
+    //     if dist_x > CHUNK_UNLOAD_DISTANCE || dist_y > CHUNK_UNLOAD_DISTANCE {
+    //         unload_chunk(chunk_pos, w)
+    //     }
+    // }
 }
 
 handle_player_input :: proc(p:^Player, w:^World) {

game/tiles.odin

@@ -5,130 +5,33 @@ import "core:math/rand"
 
 Tile :: struct #packed {
     tilemap_pos: Vec2i,
-    color: rl.Color,
+    color: [4]u8,
     type: TileType,
     interaction: InteractionType,
     resource: ResourceType,
 }
 
-TileType :: enum {
+TileType :: enum u8 {
     NOTHING,
     WALL,
     FOLIAGE,
 }
 
-ResourceType :: enum {
+ResourceType :: enum u8 {
     NOTHING,
     TREE,
 }
 
-InteractionType :: enum {
+InteractionType :: enum u8 {
     NOTHING,
     RESOURCE,
     ENEMY,
 }
-serialize_tile :: proc(t: Tile) -> []byte {
-    data: [dynamic]byte
-
-    // Tilemap Pos (16 bytes)
-    tilemap_pos_bytes := serialize_vec2i(t.tilemap_pos)
-    append(&data, ..tilemap_pos_bytes[:])
-
-    // Color (4 bytes)
-    append(&data, byte(t.color.r), byte(t.color.g), byte(t.color.b), byte(t.color.a))
-
-    // TileType (8 bytes)
-    tile_type_bytes := serialize_int(int(t.type))
-    append(&data, ..tile_type_bytes[:])
-
-    // Interaction Type (8 bytes)
-    interaction_bytes := serialize_int(int(t.interaction))
-    append(&data, ..interaction_bytes[:])
-
-    // Resource Type (8 bytes)
-    resource_bytes := serialize_int(int(t.resource))
-    append(&data, ..resource_bytes[:])
-
-    return data[:]
-}
-
-deserialize_tile :: proc(data: []byte) -> Tile {
-    t: Tile
-
-    // Tilemap Pos (16 bytes)
-    t.tilemap_pos = deserialize_vec2i(data[0:16])
-
-    // Color (4 bytes)
-    t.color.r = u8(data[16])
-    t.color.g = u8(data[17])
-    t.color.b = u8(data[18])
-    t.color.a = u8(data[19])
-
-    // TileType (8 bytes)
-    t.type = TileType(deserialize_int(data[20:28]))
-
-    // Interaction Type (8 bytes)
-    t.interaction = InteractionType(deserialize_int(data[28:36]))
-
-    // Resource Type (8 bytes)
-    t.resource = ResourceType(deserialize_int(data[36:44]))
-
-    return t
-}
-
-// serialize_tile :: proc(t: Tile) -> []byte {
-//     data: [dynamic]byte
-
-//     // TileType
-//     tile_type_bytes := serialize_int(int(t.type))
-//     append(&data, ..tile_type_bytes[:])
-
-//     // Tilemap Pos
-//     tilemap_pos_bytes := serialize_vec2i(t.tilemap_pos)
-//     append(&data, ..tilemap_pos_bytes[:])
-
-//     // Color
-//     append(&data, byte(t.color.r), byte(t.color.g), byte(t.color.b), byte(t.color.a))
-
-//     // Interaction Type
-//     interaction_bytes := serialize_int(int(t.interaction))
-//     append(&data, ..interaction_bytes[:])
-
-//     // Resource Type
-//     resource_bytes := serialize_int(int(t.resource))
-//     append(&data, ..resource_bytes[:])
-
-//     return data[:]
-// }
-
-// deserialize_tile :: proc(data:[]byte) -> Tile {
-//     t: Tile
-
-//     // TileType
-//     t.type = TileType(deserialize_int(data[0:4]))
-
-//     // TilemapPos
-//     t.tilemap_pos = deserialize_vec2i(data[4:12])
-
-//     // Color
-//     t.color.r = u8(data[12])
-//     t.color.g = u8(data[13])
-//     t.color.b = u8(data[14])
-//     t.color.a = u8(data[15])
-
-//     // ResourceType
-//     t.resource = ResourceType(deserialize_int(data[16:20]))
-
-//     // InteractionType
-//     t.interaction = InteractionType(deserialize_int(data[20:24]))
-
-//     return t
-// }
 
 tree_tile := Tile {
     type = .WALL,
     tilemap_pos = {0,1},
-    color = rl.DARKGREEN,
+    color = {17,87,30,255},
     resource = .TREE,
     interaction = .RESOURCE,
 }

game/world.odin

@@ -4,9 +4,10 @@ import rl "vendor:raylib"
 import "core:fmt"
 import "core:os"
 import "core:path/filepath"
+import "core:mem"
 
 CELL_SIZE :: 16
-CHUNK_SIZE :: 32
+CHUNK_SIZE :: 5
 WORLD_DATA_PATH :: "data/worlds"
 
 World :: struct {
@@ -61,105 +62,97 @@ save_world :: proc(w:^World) {
     }
 }
 
-serialize_chunk :: proc(c:^Chunk) -> []byte {
-    data : [dynamic]byte
-
-    // Position
-    pos_bytes := serialize_vec2i(c.position)
-    append(&data, ..pos_bytes[:])
-
-    // Tiles
-    for y in 0..<CHUNK_SIZE {
-        for x in 0..<CHUNK_SIZE {
-            tile_bytes := serialize_tile(c.tiles[x][y])
-            fmt.printfln("Serialized tile size: %v", len(tile_bytes))
-            append(&data, ..tile_bytes[:])
-        }
-    }
-
-    fmt.printfln("Serialized chunk size: %v", len(data)) // Print final serialized size
-    fmt.printfln("Before serialization, Chunk position: %v", c.position)
-    return data[:]
-}
-
-
-deserialize_chunk :: proc(data: []byte) -> Chunk {
-    chunk: Chunk
-
-    // Position
-    chunk.position = deserialize_vec2i(data[0:8])
-
-    // Tiles
-    offset := 8
-    tile_size := size_of(Tile)
-
-    // Check total expected size of data
-    expected_size := offset + (CHUNK_SIZE * CHUNK_SIZE * tile_size)
-    if len(data) != expected_size {
-        fmt.printfln("Error: Data size mismatch. Expected size: %v, Actual size: %v", expected_size, len(data))
-        fmt.printfln("Chunk position: %v", chunk.position)
-
-        return chunk // Return empty or invalid chunk to handle the error.
-    }
-
-    for y in 0..<CHUNK_SIZE {
-        for x in 0..<CHUNK_SIZE {
-            start := offset + (y * CHUNK_SIZE + x) * tile_size
-            end := start + tile_size
-
-            fmt.printfln("Start:%v, End:%v", start, end)
-
-            if end > len(data) {
-                fmt.printfln("Out of bounds access. Start:%v, End:%v | Data Length: %v", start, end, len(data))
-                break
-            }
-
-            chunk.tiles[x][y] = deserialize_tile(data[start:end])
-        }
-    }
-
-    fmt.printfln("Expected chunk size: %v | Serialized chunk data size: %v", size_of(Chunk), len(data))
-
-    return chunk
-}
-
-
 save_chunk :: proc(c:^Chunk, w:^World) {
     chunk_dir := fmt.tprintf("%v/%v", w.data_dir, "chunks")
-    if !os.is_dir(chunk_dir) {
-        os.make_directory(chunk_dir)
-    }
-
     filename := fmt.tprintf("%v/%v_%v.chunk", chunk_dir, c.position.x, c.position.y)
 
-    data := serialize_chunk(c)
+    fmt.printfln("Saving chunk: %v", filename)
 
-    fmt.printfln("Writing chunk data: %v bytes", len(data))
+    data := make([dynamic]u8)
 
-    
-    err := os.write_entire_file_or_err(filename, data)
+    // Append Position
+    for byte in transmute([size_of(int)]u8)c.position.x {append(&data, byte)} 
+    for byte in transmute([size_of(int)]u8)c.position.y {append(&data, byte)} 
 
-    if err != nil {
-        fmt.printfln("Failed to save chunk: %v", err)
+    // Append Tiles
+    for row in &c.tiles {
+        for tile in row {
+            for byte in transmute([size_of(int)]u8)tile.tilemap_pos.x {append(&data, byte)}
+            for byte in transmute([size_of(int)]u8)tile.tilemap_pos.y {append(&data, byte)}
+            for byte in transmute([4]u8)tile.color {append(&data, byte)}
+            for byte in transmute([size_of(TileType)]u8)tile.type {append(&data, byte)}
+            for byte in transmute([size_of(InteractionType)]u8)tile.interaction {append(&data, byte)}
+            for byte in transmute([size_of(ResourceType)]u8)tile.resource {append(&data, byte)}
+        }
     }
+
+    err := os.write_entire_file_or_err(filename, data[:])
+    
 }
 
 load_chunk :: proc(pos:Vec2i, w:^World) -> Chunk {
     chunk_dir := fmt.tprintf("%v/%v", w.data_dir, "chunks")
-    if !os.is_dir(chunk_dir) {
-        
+    filename := fmt.tprintf("%v/%v_%v.chunk", chunk_dir, pos.x, pos.y)
+
+    data, err := os.read_entire_file_from_filename_or_err(filename)
+    if err != nil {
+        fmt.printfln("No chunk %v found, generating new chunk", pos)
+        chunk := generate_chunk(pos)
+        save_chunk(&chunk, w)
+        return chunk
     }
 
-    filename := fmt.tprintf("%v/%v_%v.chunk", chunk_dir, pos.x, pos.y)
-    
-    data, err := os.read_entire_file_from_filename_or_err(filename)
+    chunk: Chunk
+    offset := 0
 
-    if err != nil {
-        fmt.printfln("Chunk %v file does not exist, creating new chunk", pos)
-        return generate_chunk(pos)
-    } 
+    // Load Position
+    mem.copy(transmute([^]u8)&chunk.position.x, &data[offset], size_of(int))
+    offset += size_of(int)
+    mem.copy(transmute([^]u8)&chunk.position.y, &data[offset], size_of(int))
+    offset += size_of(int)
+
+
+    // // Load Tiles
+    // for row in &chunk.tiles {
+    //     for &tile in row {
+    //         mem.copy(transmute([^]u8)tile.tilemap_pos.x, &data[offset], size_of(int))
+    //         offset += size_of(int)
+    //         mem.copy(transmute([^]u8)tile.tilemap_pos.y, &data[offset], size_of(int))
+    //         offset += size_of(int)
+
+    //         //Color
+    //         tile.color = {}
+
+    //         
+    //     }
+    // }
+
+    // Load tiles
+    for row_index := 0; row_index < len(chunk.tiles); row_index += 1 {
+        for tile_index := 0; tile_index < len(chunk.tiles[row_index]); tile_index += 1 {
+            tile := &chunk.tiles[row_index][tile_index] // Get address of tile
+            mem.copy(&tile.tilemap_pos.x, &data[offset], size_of(int))
+            offset += size_of(int)
+            mem.copy(&tile.tilemap_pos.y, &data[offset], size_of(int))
+            offset += size_of(int)
+
+            // Load color
+            color_temp: [4]u8
+            mem.copy(&color_temp, &data[offset], 4)
+            tile.color = color_temp
+            offset += 4
+
+            mem.copy(&tile.type, &data[offset], size_of(TileType))
+            offset += size_of(TileType)
+            mem.copy(&tile.interaction, &data[offset], size_of(InteractionType))
+            offset += size_of(InteractionType)
+            mem.copy(&tile.resource, &data[offset], size_of(ResourceType))
+            offset += size_of(ResourceType)
+        }
+    }
+
+    return chunk
 
-    return deserialize_chunk(data)
 }
 
 unload_chunk :: proc(pos:Vec2i, w:^World) {
@@ -170,7 +163,6 @@ unload_chunk :: proc(pos:Vec2i, w:^World) {
     } 
 }
 
-
 generate_chunk :: proc(pos:Vec2i) -> Chunk {
     chunk := Chunk {position = pos}
 
@@ -181,7 +173,7 @@ generate_chunk :: proc(pos:Vec2i) -> Chunk {
                 tilemap_pos = {0,2},
                 interaction = .NOTHING,
                 resource = .NOTHING,
-                color = rl.GREEN
+                color = {0,255,0,255}
             }
         }
     }
@@ -234,6 +226,14 @@ set_chunk_tile :: proc(c:^Chunk, t:Tile, pos:Vec2i) {
     c.tiles[pos.x][pos.y] = t
 }
 
+set_tile :: proc(w:^World, t:Tile, p:Vec2i) {
+    chunk := get_chunk_from_world_pos(w, vec2i_to_vec2(p))
+
+    set_chunk_tile(chunk, t, get_local_chunk_pos(p))
+
+    save_chunk(chunk, w)
+}   
+
 draw_world :: proc(w:^World) {
     for chunk_pos, chunk in w.chunks {
         for x in 0..<CHUNK_SIZE {
@@ -244,7 +244,7 @@ draw_world :: proc(w:^World) {
                 pos := rl.Vector2{f32(world_x * CELL_SIZE), f32(world_y * CELL_SIZE)}
 
                 if tile.type != .NOTHING {
-                    draw_tile(vec2i_to_vec2(tile.tilemap_pos), pos, tile.color)
+                    draw_tile(vec2i_to_vec2(tile.tilemap_pos), pos, rl.Color(tile.color))
                 }
             }
         }