improve chunk baking

code/game/src/packets/pkt_00_init.c

@@ -34,6 +34,6 @@ int32_t pkt_00_init_handler(pkt_header *header) {
     uint64_t peer_id = (uint64_t)header->udata;
     uint64_t ent_id = player_spawn(NULL);
     ecs_set(world_ecs(), ent_id, ClientInfo, {.peer = ent_id, .view_id = header->view_id });
-    pkt_01_welcome_send(peer_id, header->view_id, ent_id, world_chunk_size(), world_chunk_amount());
+    pkt_01_welcome_send(world_seed(), peer_id, header->view_id, ent_id, world_chunk_size(), world_chunk_amount());
     return 0;
 }

code/game/src/packets/pkt_01_welcome.c

@@ -6,6 +6,7 @@
 #include "camera.h"
 
 pkt_desc pkt_01_welcome_desc[] = {
+    { PKT_FIELD(CWP_ITEM_POSITIVE_INTEGER, pkt_01_welcome, seed) },
     { PKT_FIELD(CWP_ITEM_POSITIVE_INTEGER, pkt_01_welcome, ent_id) },
     { PKT_FIELD(CWP_ITEM_POSITIVE_INTEGER, pkt_01_welcome, chunk_size) },
     { PKT_FIELD(CWP_ITEM_POSITIVE_INTEGER, pkt_01_welcome, world_size) },
@@ -18,12 +19,13 @@ size_t pkt_01_welcome_encode(pkt_01_welcome *table) {
     pkt_pack_struct(&pc, pkt_01_welcome_desc, PKT_STRUCT_PTR(table));
     return pkt_pack_msg_size(&pc);
 }
-size_t pkt_01_welcome_send(uint64_t peer_id,
+size_t pkt_01_welcome_send(uint32_t seed,
+                           uint64_t peer_id,
                            uint16_t view_id,
                            uint64_t ent_id,
                            uint16_t chunk_size,
                            uint16_t world_size) {
-    pkt_01_welcome table = {.ent_id = ent_id, .chunk_size = chunk_size, .world_size = world_size};
+    pkt_01_welcome table = {.seed = seed, .ent_id = ent_id, .chunk_size = chunk_size, .world_size = world_size};
     return pkt_world_write(MSG_ID_01_WELCOME, pkt_01_welcome_encode(&table), 1, view_id, (void*)peer_id);
 }
 
@@ -34,7 +36,7 @@ int32_t pkt_01_welcome_handler(pkt_header *header) {
     world_view *view = game_world_view_get(header->view_id);
     
     zpl_printf("[INFO] initializing read-only world view ...\n");
-    world_view_init(view, table.ent_id, table.chunk_size, table.world_size);
+    world_view_init(view, table.seed, table.ent_id, table.chunk_size, table.world_size);
     game_world_view_set_active(view);
     return 0;
 }

code/game/src/packets/pkt_01_welcome.h

@@ -3,12 +3,14 @@
 #include "packet_utils.h"
 
 typedef struct {
+    uint32_t seed;
     uint64_t ent_id;
     uint16_t chunk_size;
     uint16_t world_size;
 } pkt_01_welcome;
 
-size_t pkt_01_welcome_send(uint64_t peer_id,
+size_t pkt_01_welcome_send(uint32_t seed,
+                           uint64_t peer_id,
                            uint16_t view_id,
                            uint64_t ent_id,
                            uint16_t chunk_size,

code/game/src/world/blocks.c

@@ -5,6 +5,7 @@
 #include "raylib.h"
 #include "gen/texgen.h"
 #include "world_view.h"
+#include "perlin.h"
 
 #define BLOCKS_COUNT (sizeof(blocks)/sizeof(block))
 
@@ -111,7 +112,7 @@ void blocks_build_chunk_tex(uint64_t id, uint8_t *chunk_blocks, uint8_t *outer_c
             DrawTexturePro(blk, src, dst, (Vector2){0.0f,0.0f}, 0.0f, WHITE);
 #else
             static float rots[] = { 0.0f, 90.0f, 180.f, 270.0f };
-            float rot = rots[rand() % 4];
+            float rot = rots[(int32_t)(perlin_fbm(view->seed, x, y, 1.2f, 3) * 4.0f) % 4];
             float half_block = WORLD_BLOCK_SIZE / 2.0f;
             Texture2D blk = blocks[chunk_blocks[(y*view->chunk_size)+x]].img;
             Rectangle src = {0, 0, WORLD_BLOCK_SIZE, WORLD_BLOCK_SIZE};

code/game/src/world/world.c

@@ -318,6 +318,10 @@ uint32_t world_buf(uint8_t const **ptr, uint32_t *width) {
     return world.size;
 }
 
+uint32_t world_seed(void) {
+    return world.seed;
+}
+
 ecs_world_t * world_ecs() {
     if (world.ecs_stage != NULL) {
         return world.ecs_stage;

code/game/src/world/world.h

@@ -55,6 +55,7 @@ int32_t world_read(void* data, uint32_t datalen, void *udata);
 int32_t world_write(pkt_header *pkt, void *udata);
 
 uint32_t world_buf(uint8_t const **ptr, uint32_t *width);
+uint32_t world_seed(void);
 ecs_world_t *world_ecs(void);
 void world_set_stage(ecs_world_t *ecs);
 librg_world *world_tracker(void);

code/game/src/world_view.c

@@ -75,7 +75,8 @@ world_view world_view_create(uint16_t view_id) {
     return view;
 }
 
-void world_view_init(world_view *view, uint64_t ent_id, uint16_t chunk_size, uint16_t chunk_amount) {
+void world_view_init(world_view *view, uint32_t seed, uint64_t ent_id, uint16_t chunk_size, uint16_t chunk_amount) {
+    view->seed = seed;
     view->owner_id = ent_id;
     view->chunk_size = chunk_size;
     view->chunk_amount = chunk_amount;

code/game/src/world_view.h

@@ -9,6 +9,7 @@ typedef struct {
     entity_view_tbl entities;
     librg_world *tracker;
     
+    uint32_t seed;
     uint32_t size;
     uint32_t dim;
     uint16_t chunk_size;
@@ -21,5 +22,5 @@ typedef struct {
 } world_view;
 
 world_view world_view_create(uint16_t view_id);
-void world_view_init(world_view *view, uint64_t ent_id, uint16_t chunk_size, uint16_t chunk_amount);
+void world_view_init(world_view *view, uint32_t seed, uint64_t ent_id, uint16_t chunk_size, uint16_t chunk_amount);
 void world_view_destroy(world_view *view);