PKT: chunk block streaming + pkt enhancements

code/game/header/entity_view.h

@@ -35,6 +35,10 @@ typedef struct entity_view {
     float tx;
     float ty;
     
+    // TODO(zaklaus): Find a way to stream dynamic arrays
+    uint8_t blocks_used;
+    uint8_t blocks[256];
+    
     // NOTE(zaklaus): internals
     uint8_t layer_id;
     uint64_t last_update;

code/game/header/packet_utils.h

@@ -97,6 +97,10 @@ static inline int32_t pkt_world_write(pkt_messages id, size_t pkt_size, int8_t i
 #define PKT_ARRAY(t, a) .type = CWP_ITEM_BIN, .offset = PKT_OFFSETOF(t, a), .size = PKT_FIELD_SIZEOF(t,a), .it_size = PKT_FIELD_SIZEOF(t,a[0]), .name = #a
 #endif
 
+#ifndef PKT_SKIP_IF
+#define PKT_SKIP_IF(t, a, e, n) .skip_count = n, .offset = PKT_OFFSETOF(t, a), .skip_eq = e, .name = #a
+#endif
+
 #ifndef PKT_END
 #define PKT_END .type = CWP_NOT_AN_ITEM
 #endif
@@ -111,6 +115,8 @@ typedef struct pkt_desc {
     size_t offset;
     size_t size;
     size_t it_size;
+    size_t skip_count;
+    uint8_t skip_eq;
 } pkt_desc;
 
 int32_t pkt_unpack_struct(cw_unpack_context *uc, pkt_desc *desc, void *raw_blob, uint32_t blob_size);

code/game/source/entity_view.c

@@ -10,6 +10,8 @@ pkt_desc pkt_entity_view_desc[] = {
     { PKT_HALF(entity_view, y) },
     { PKT_HALF(entity_view, vx) },
     { PKT_HALF(entity_view, vy) },
+    { PKT_SKIP_IF(entity_view, blocks_used, 0, 1) },
+    { PKT_ARRAY(entity_view, blocks) },
     { PKT_END }, 
 };
 

code/game/source/main.c

@@ -31,7 +31,7 @@ int main(int argc, char** argv) {
     zpl_opts_add(&opts, "ed", "enable-dash", "enables flecs dash", ZPL_OPTS_FLAG);
     zpl_opts_add(&opts, "s", "seed", "world seed", ZPL_OPTS_INT);
     zpl_opts_add(&opts, "r", "random-seed", "generate random world seed", ZPL_OPTS_FLAG);
-    zpl_opts_add(&opts, "cs", "chunk-size", "amount of blocks within a chunk (single axis)", ZPL_OPTS_INT);
+    //zpl_opts_add(&opts, "cs", "chunk-size", "amount of blocks within a chunk (single axis)", ZPL_OPTS_INT);
     zpl_opts_add(&opts, "ws", "world-size", "amount of chunks within a world (single axis)", ZPL_OPTS_INT);
     zpl_opts_add(&opts, "n", "npc-count", "amount of demo npcs to spawn", ZPL_OPTS_INT);
     
@@ -47,7 +47,7 @@ int main(int argc, char** argv) {
     int8_t is_dash_enabled = zpl_opts_has_arg(&opts, "enable-dash");
     int32_t seed = zpl_opts_integer(&opts, "seed", DEFAULT_WORLD_SEED);
     uint16_t num_viewers = zpl_opts_integer(&opts, "viewer-count", 1);
-    uint16_t chunk_size = zpl_opts_integer(&opts, "chunk-size", DEFAULT_CHUNK_SIZE);
+    uint16_t chunk_size = DEFAULT_CHUNK_SIZE; //zpl_opts_integer(&opts, "chunk-size", DEFAULT_CHUNK_SIZE);
     uint16_t world_size = zpl_opts_integer(&opts, "world-size", DEFAULT_WORLD_SIZE);
     uint32_t npc_count = zpl_opts_integer(&opts, "npc-count", 1000);
     

code/game/source/packet.c

@@ -64,6 +64,11 @@ int32_t pkt_unpack_struct(cw_unpack_context *uc, pkt_desc *desc, void *raw_blob,
     uint8_t *blob = (uint8_t*)raw_blob;
     for (pkt_desc *field = desc; field->type != CWP_NOT_AN_ITEM; ++field) {
         cw_unpack_next(uc);
+        if (field->skip_count) {
+            if (uc->item.type != CWP_ITEM_POSITIVE_INTEGER) return -1; // unexpected field
+            field += uc->item.as.u64;
+            continue;
+        }
         if (uc->item.type != field->type) return -1; // unexpected field
         if (blob + field->offset + field->size > blob + blob_size) return -1; // field does not fit
         switch (field->type) {
@@ -99,6 +104,18 @@ int32_t pkt_unpack_struct(cw_unpack_context *uc, pkt_desc *desc, void *raw_blob,
 int32_t pkt_pack_struct(cw_pack_context *pc, pkt_desc *desc, void *raw_blob, uint32_t blob_size) {
     uint8_t *blob = (uint8_t*)raw_blob;
     for (pkt_desc *field = desc; field->type != CWP_NOT_AN_ITEM; ++field) {
+        if (field->skip_count) {
+            uint8_t val = *(uint8_t*)(blob + field->offset);
+            if (val == field->skip_eq) {
+                field += field->skip_count;
+                cw_pack_unsigned(pc, field->skip_count);
+            } else {
+                cw_pack_unsigned(pc, 0);
+            }
+            
+            continue;
+        }
+        
         switch (field->type) {
             case CWP_ITEM_BIN: {
                 if (field->size >= PKT_BUFSIZ) return -1; // bin blob too big
@@ -140,6 +157,14 @@ void pkt_dump_struct(pkt_desc *desc, void* raw_blob, uint32_t blob_size) {
     uint8_t *blob = (uint8_t*)raw_blob;
     zpl_printf("{\n");
     for (pkt_desc *field = desc; field->type != CWP_NOT_AN_ITEM; ++field) {
+        if (field->skip_count) {
+            uint8_t val = *(uint8_t*)(blob + field->offset);
+            if (val == field->skip_eq) {
+                field += field->skip_count;
+            }
+            
+            continue;
+        }
         zpl_printf("  \"%s\": ", field->name);
         switch (field->type) {
             case CWP_ITEM_BIN: {

code/game/source/platform_raylib.c

@@ -186,7 +186,7 @@ void DEBUG_draw_ground(uint64_t key, entity_view * data) {
             if (zoom_overlay_tran > 0.02f) {
                 DrawRectangleEco(x, y, size-offset, size-offset, ColorAlpha(ColorFromHSV(key*x, 0.13f, 0.89f), data->tran_time*zoom_overlay_tran));
                 
-                DrawTextEco(TextFormat("%d %d", (int)data->x, (int)data->y), (int16_t)x+15, (int16_t)y+15, 65 , ColorAlpha(BLACK, data->tran_time*zoom_overlay_tran), 0.0); 
+                DrawTextEco(TextFormat("%d %d", (int)data->x, (int)data->y), (int16_t)x+15, (int16_t)y+15, 200 , ColorAlpha(BLACK, data->tran_time*zoom_overlay_tran), 0.0); 
                 
             }
         }break;

code/game/source/world/world.c

@@ -39,6 +39,11 @@ entity_view world_build_entity_view(int64_t e) {
         view.kind = EKIND_CHUNK;
         view.x = chpos->x;
         view.y = chpos->y;
+        view.blocks_used = 1;
+        
+        for (int i = 0; i < world.chunk_size*world.chunk_size; i += 1) {
+            view.blocks[i] = *ecs_vector_get(chpos->blocks, uint8_t, i);
+        }
     }
     
     return view;
@@ -146,10 +151,14 @@ int32_t world_init(int32_t seed, uint16_t chunk_size, uint16_t chunk_amount) {
         librg_chunk_to_chunkpos(world.tracker, i, &chunk->x, &chunk->y, NULL);
         chunk->blocks = NULL;
         
-        // TODO(zaklaus): populate chunks from worldgen
+        for (int y = 0; y < world.chunk_size; y += 1) {
-        for (int j = 0; j < world.chunk_size * world.chunk_size; j += 1) {
+            for (int x = 0; x < world.chunk_size; x += 1) {
+                int chk = world.chunk_size * i;
+                int chk_x = chk % world.chunk_amount;
+                int chk_y = chk / world.chunk_amount;
                 uint8_t *c = ecs_vector_add(&chunk->blocks, uint8_t);
-            *c = 0;
+                *c = world.data[(chk_y+y)*world.chunk_amount + (chk_x+x)];
+            }
         }
     }
     

code/modules/source/controllers.c

@@ -61,5 +61,4 @@ void ControllersImport(ecs_world_t *ecs) {
     ECS_SET_ENTITY(EcsDemoNPC);
     ECS_SET_TYPE(Builder);
     ECS_SET_TYPE(Player);
-    ECS_SET_ENTITY(MovementImpulse);
 }

code/modules/source/physics.c

@@ -18,7 +18,6 @@ void MoveWalk(ecs_iter_t *it) {
 
 void HandleCollisions(ecs_iter_t *it) {
     Position *p = ecs_column(it, Position, 1);
-    //Velocity *v = ecs_column(it, Velocity, 2);
     
     for (int i = 0; i < it->count; i++) {
         // NOTE(zaklaus): world bounds