world: rebake chunk tex on change

code/game/header/entity_view.h

@@ -38,6 +38,8 @@ typedef struct entity_view {
     // TODO(zaklaus): Find a way to stream dynamic arrays
     uint8_t blocks_used;
     uint8_t blocks[256];
+    uint32_t color;
+    uint8_t is_dirty;
     int64_t tex;
     
     // NOTE(zaklaus): internals

code/game/header/world/world.h

@@ -36,6 +36,7 @@ typedef struct {
     uint8_t active_layer_id;
     ecs_world_t *ecs;
     ecs_query_t *ecs_update;
+    ecs_entity_t chunk_handle;
     ecs_entity_t *chunk_mapping;
     librg_world *tracker;
     world_pkt_reader_proc *reader_proc;
@@ -62,8 +63,17 @@ ecs_entity_t world_chunk_mapping(librg_chunk id);
 typedef struct {
     uint32_t id;
     uint8_t block_id;
-    ecs_entity_t chunk_id;
+    ecs_entity_t chunk_e;
+    int64_t chunk_id;
     float ox, oy;
 } world_block_lookup;
 
 world_block_lookup world_block_from_realpos(float x, float y);
+world_block_lookup world_block_from_index(int64_t id, uint16_t block_idx);
+int64_t world_chunk_from_realpos(float x, float y);
+int64_t world_chunk_from_entity(ecs_entity_t id);
+void world_chunk_replace_block(int64_t id, uint16_t block_idx, uint8_t block_id);
+uint8_t *world_chunk_get_blocks(int64_t id);
+void world_chunk_mark_dirty(ecs_entity_t e);
+uint8_t world_chunk_is_dirty(ecs_entity_t e);
+

code/game/source/platform_raylib.c

@@ -172,7 +172,7 @@ void DEBUG_draw_ground(uint64_t key, entity_view * data) {
             DrawTextureRec(tex.texture, (Rectangle){0, 0, tex.texture.width, -tex.texture.height}, (Vector2){x, y}, ColorAlpha(WHITE, data->tran_time));
             
             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*0.75f));
+                DrawRectangleEco(x, y, size-offset, size-offset, ColorAlpha(ColorFromHSV(data->color, 0.13f, 0.89f), data->tran_time*zoom_overlay_tran*0.75f));
                 
                 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); 
                 

code/game/source/world/blocks.c

@@ -112,6 +112,8 @@ void *blocks_get_chunk_tex(uint64_t id) {
 }
 
 void blocks_remove_chunk_tex(uint64_t id) {
-    UnloadRenderTexture(*blocks__chunk_tbl_get(&baked_chunks, id));
+    RenderTexture2D *tex = blocks__chunk_tbl_get(&baked_chunks, id);
+    if (!tex) return;
+    UnloadRenderTexture(*tex);
     blocks__chunk_tbl_remove(&baked_chunks, id);
 }

code/game/source/world/world.c

@@ -19,6 +19,7 @@ entity_view world_build_entity_view(int64_t e) {
     ECS_IMPORT(world_ecs(), Net);
     entity_view view = {0};
     
+    
     // TODO(zaklaus): branch out based on ECS tags
     const Position *pos = ecs_get(world_ecs(), e, Position);
     if (pos) {
@@ -34,12 +35,15 @@ entity_view world_build_entity_view(int64_t e) {
         view.vy = vel->y;
     }
     
-    const Chunk *chpos = ecs_get(world_ecs(), e, Chunk);
-    if (chpos) {
+    
+    if (ecs_get(world_ecs(), e, Chunk)) {
+        Chunk *chpos = ecs_get_mut(world_ecs(), e, Chunk, 0);
         view.kind = EKIND_CHUNK;
         view.x = chpos->x;
         view.y = chpos->y;
         view.blocks_used = 1;
+        view.is_dirty = chpos->is_dirty;
+        chpos->is_dirty = false;
         
         for (int i = 0; i < world.chunk_size*world.chunk_size; i += 1) {
             view.blocks[i] = world.block_mapping[chpos->id][i];
@@ -84,7 +88,7 @@ int32_t tracker_write_update(librg_world *w, librg_event *e) {
     // NOTE(zaklaus): exclude chunks from updates as they never move
     // TODO(zaklaus): use dirty flag to send updates if chunk changes
     {
-        if (view.kind == EKIND_CHUNK) {
+        if (view.kind == EKIND_CHUNK && !view.is_dirty) {
             return LIBRG_WRITE_REJECT;
         }
     }
@@ -141,6 +145,7 @@ int32_t world_init(int32_t seed, uint16_t chunk_size, uint16_t chunk_amount) {
     world.ecs_update = ecs_query_new(world.ecs, "net.ClientInfo, general.Position");
     world.chunk_mapping = zpl_malloc(sizeof(ecs_entity_t)*zpl_square(chunk_amount));
     world.block_mapping = zpl_malloc(sizeof(uint8_t*)*zpl_square(chunk_amount));
+    world.chunk_handle = ecs_typeid(Chunk);
     
     int32_t world_build_status = worldgen_test(&world);
     ZPL_ASSERT(world_build_status >= 0);
@@ -154,6 +159,7 @@ int32_t world_init(int32_t seed, uint16_t chunk_size, uint16_t chunk_amount) {
         world.chunk_mapping[i] = e;
         world.block_mapping[i] = zpl_malloc(sizeof(uint8_t)*zpl_square(chunk_size));
         chunk->id = i;
+        chunk->is_dirty = false;
         
         for (int y = 0; y < chunk_size; y += 1) {
             for (int x = 0; x < chunk_size; x += 1) {
@@ -226,6 +232,8 @@ static void world_tracker_update(uint8_t ticker, uint32_t freq, uint8_t radius)
 
 
 int32_t world_update() {
+    ECS_IMPORT(world.ecs, General);
+    
     profile (PROF_UPDATE_SYSTEMS) {
         ecs_progress(world.ecs, 0.0f);
     }
@@ -308,10 +316,53 @@ world_block_lookup world_block_from_realpos(float x, float y) {
     world_block_lookup lookup = {
         .id = block_idx,
         .block_id = block_id,
-        .chunk_id = e,
+        .chunk_id = chunk_id,
+        .chunk_e = e,
         .ox = box,
         .oy = boy,
     };
     
     return lookup;
 }
+
+world_block_lookup world_block_from_index(int64_t id, uint16_t block_idx) {
+    uint8_t block_id = world.block_mapping[id][block_idx];
+    
+    world_block_lookup lookup = {
+        .id = block_idx,
+        .block_id = block_id,
+        .chunk_id = id,
+        .chunk_e = world.chunk_mapping[id],
+    };
+    
+    return lookup;
+}
+
+int64_t world_chunk_from_realpos(float x, float y) {
+    librg_chunk chunk_id = librg_chunk_from_realpos(world.tracker, x, y, 0);
+    return world.chunk_mapping[chunk_id];
+}
+
+int64_t world_chunk_from_entity(ecs_entity_t id) {
+    return librg_entity_chunk_get(world.tracker, id);
+}
+
+void world_chunk_replace_block(int64_t id, uint16_t block_idx, uint8_t block_id) {
+    assert(block_idx >= 0 && block_idx < zpl_square(world.chunk_size));
+    world.block_mapping[id][block_idx] = block_id;
+}
+
+uint8_t *world_chunk_get_blocks(int64_t id) {
+    return world.block_mapping[id];
+}
+
+void world_chunk_mark_dirty(ecs_entity_t e) {
+    Chunk *chunk = (Chunk *)ecs_get_mut_w_entity(world.ecs, e, world.chunk_handle, NULL);
+    if (chunk) chunk->is_dirty = true;
+}
+
+uint8_t world_chunk_is_dirty(ecs_entity_t e) {
+    Chunk *chunk = (Chunk *)ecs_get_mut_w_entity(world.ecs, e, world.chunk_handle, NULL);
+    if (chunk) return chunk->is_dirty;
+    return false;
+}

code/game/source/world_view.c

@@ -40,6 +40,8 @@ int32_t tracker_read_update(librg_world *w, librg_event *e) {
     data.layer_id = view->active_layer_id;
     predict_receive_update(d, &data);
     entity_view_update_or_create(&view->entities, entity_id, data);
+    entity_view_remove_chunk_texture(&view->entities, entity_id);
+    entity_view_update_chunk_texture(&view->entities, entity_id, view);
     return 0;
 }
 
@@ -53,6 +55,7 @@ int32_t tracker_read_create(librg_world *w, librg_event *e) {
     data.ent_id = entity_id;
     data.layer_id = view->active_layer_id;
     data.tran_time = 0.0f;
+    data.color = rand(); // TODO(zaklaus): feed from server
     if (data.flag & EFLAG_INTERP) {
         data.tx = data.x;
         data.ty = data.y;

code/modules/modules/general.h

@@ -12,7 +12,7 @@ ECS_STRUCT(Chunk, {
                uint32_t id;
                int16_t x;
                int16_t y;
-               //ecs_vector(uint8_t) blocks;
+               uint8_t is_dirty;
            });
 
 ECS_STRUCT(Drawable, {

code/modules/source/controllers.c

@@ -4,6 +4,8 @@
 #include "modules/general.h"
 #include "modules/physics.h"
 
+#include "world/blocks.h"
+
 #define PLR_MOVE_SPEED 50.0
 #define PLR_MOVE_SPEED_MULT 4.0
 
@@ -32,6 +34,20 @@ void DemoNPCMoveAround(ecs_iter_t *it) {
     }
 }
 
+void DemoPlaceIceBlock(ecs_iter_t *it) {
+    Input *in = ecs_column(it, Input, 1);
+    Position *p = ecs_column(it, Position, 2);
+    uint8_t watr_id = blocks_find(BLOCK_BIOME_DEV, BLOCK_KIND_WATER);
+    
+    for (int i = 0; i < it->count; i++) {
+        if (in[i].use) {
+            world_block_lookup l = world_block_from_realpos(p[i].x, p[i].y);
+            world_chunk_replace_block(l.chunk_id, l.id, watr_id); 
+            world_chunk_mark_dirty(l.chunk_e);
+        }
+    }
+}
+
 void ControllersImport(ecs_world_t *ecs) {
     ECS_MODULE(ecs, Controllers);
     ecs_set_name_prefix(ecs, "Controllers");
@@ -48,6 +64,7 @@ void ControllersImport(ecs_world_t *ecs) {
     ECS_TAG(ecs, EcsDemoNPC);
     
     ECS_SYSTEM(ecs, MovementImpulse, EcsOnLoad, Input, physics.Velocity);
+    ECS_SYSTEM(ecs, DemoPlaceIceBlock, EcsOnLoad, Input, general.Position);
     ECS_SYSTEM(ecs, DemoNPCMoveAround, EcsOnLoad, physics.Velocity, EcsDemoNPC);
     
     ECS_PREFAB(ecs, Base, general.Position, physics.Velocity, Input, EcsActor);