Properly link flecs library

engine/libs/flecs/examples/c/systems/custom_phases/include/custom_phases.h

@@ -0,0 +1,16 @@
+#ifndef CUSTOM_PHASES_H
+#define CUSTOM_PHASES_H
+
+/* This generated file contains includes for project dependencies */
+#include "custom_phases/bake_config.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+

engine/libs/flecs/examples/c/systems/custom_phases/include/custom_phases/bake_config.h

@@ -0,0 +1,24 @@
+/*
+                                   )
+                                  (.)
+                                  .|.
+                                  | |
+                              _.--| |--._
+                           .-';  ;`-'& ; `&.
+                          \   &  ;    &   &_/
+                           |"""---...---"""|
+                           \ | | | | | | | /
+                            `---.|.|.|.---'
+
+ * This file is generated by bake.lang.c for your convenience. Headers of
+ * dependencies will automatically show up in this file. Include bake_config.h
+ * in your main project file. Do not edit! */
+
+#ifndef CUSTOM_PHASES_BAKE_CONFIG_H
+#define CUSTOM_PHASES_BAKE_CONFIG_H
+
+/* Headers of public dependencies */
+#include <flecs.h>
+
+#endif
+

engine/libs/flecs/examples/c/systems/custom_phases/project.json

@@ -0,0 +1,10 @@
+{
+    "id": "custom_phases",
+    "type": "application",
+    "value": {
+        "use": [
+            "flecs"
+        ],
+        "public": false
+    }
+}

engine/libs/flecs/examples/c/systems/custom_phases/src/main.c

@@ -0,0 +1,58 @@
+#include <custom_phases.h>
+#include <stdio.h>
+
+// This application demonstrates how to use custom phases for systems. The 
+// default pipeline will automatically run systems for custom phases as long as 
+// they have the EcsPhase tag.
+
+// Dummy system
+void Sys(ecs_iter_t *it) {
+    printf("system %s\n", ecs_get_name(it->world, it->system));
+}
+
+int main(int argc, char *argv[]) {
+    ecs_world_t *ecs = ecs_init_w_args(argc, argv);
+
+    // Create two custom phases that branch off of EcsOnUpdate. Note that the
+    // phases have the Phase tag, which is necessary for the builtin pipeline
+    // to discover which systems it should run.
+    ecs_entity_t Physics = ecs_new_w_id(ecs, EcsPhase);
+    ecs_entity_t Collisions = ecs_new_w_id(ecs, EcsPhase);
+    ecs_add_pair(ecs, Physics, EcsDependsOn, EcsOnUpdate);
+    ecs_add_pair(ecs, Collisions, EcsDependsOn, Physics);
+
+    // Create 3 dummy systems.
+    ecs_system(ecs, {
+        .entity = ecs_entity(ecs, {
+            .name = "CollisionSystem",
+            .add = { ecs_dependson(Collisions) }
+        }),
+        .callback = Sys
+    });
+
+    ecs_system(ecs, {
+        .entity = ecs_entity(ecs, {
+            .name = "PhysicsSystem",
+            .add = { ecs_dependson(Physics) }
+        }),
+        .callback = Sys
+    });
+
+    ecs_system(ecs, {
+        .entity = ecs_entity(ecs, {
+            .name = "GameSystem",
+            .add = { ecs_dependson(EcsOnUpdate) }
+        }),
+        .callback = Sys
+    });
+
+    // Run pipeline
+    ecs_progress(ecs, 0);
+
+    return ecs_fini(ecs);
+
+    // Output
+    //   system GameSystem
+    //   system PhysicsSystem
+    //   system CollisionSystem
+}