implemented 9-patch meshes (see dev-console tabs/buttons)

2026-01-19 21:37:57 +08:00 · 2023-09-28 14:00:54 -07:00 · 2023-09-28 14:00:54 -07:00 · f25fdceded
commit f25fdceded
parent 10dd5d7205
12 changed files with 203 additions and 50 deletions
--- a/.efrocachemap
+++ b/.efrocachemap
@ -4056,26 +4056,26 @@
  "build/assets/windows/Win32/ucrtbased.dll": "2def5335207d41b21b9823f6805997f1",
  "build/assets/windows/Win32/vc_redist.x86.exe": "b08a55e2e77623fe657bea24f223a3ae",
  "build/assets/windows/Win32/vcruntime140d.dll": "865b2af4d1e26a1a8073c89acb06e599",
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-  "build/prefab/full/linux_arm64_gui/release/ballisticakit": "ff1fa0221ac83f4d531134b9a9a87356",
-  "build/prefab/full/linux_arm64_server/debug/dist/ballisticakit_headless": "4d4fd7114044126319142a4668456bd5",
-  "build/prefab/full/linux_arm64_server/release/dist/ballisticakit_headless": "2d7d1d66d4d39aa312b973118b970851",
-  "build/prefab/full/linux_x86_64_gui/debug/ballisticakit": "2b42e72406fb0c54bfd5c3dcdeca0a89",
-  "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "977c9fc76d955ce30c709d97127d2b3d",
-  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "15d20411f5c80701a78e08d5bf832e94",
-  "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "dce80ee691257accb0a87f41ff4f673e",
-  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "a84e2b62b91d6cf6d9ec20b28af5c629",
-  "build/prefab/full/mac_arm64_gui/release/ballisticakit": "477bf924c8d9f9e2d646dee4006ce1d9",
-  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "79b4e2cd534ec0adec870d54c47e4e17",
-  "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "4e2caa995f9d806124c4d715105606a3",
-  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "4b7878086aa663c03679d568109d0dc6",
-  "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "457020313456fd2e255bd25588fc87d8",
-  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "dec55597731654d412ff2756c9e574c6",
-  "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "0a0c061db51c8bfed9eabd085e3978a7",
-  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "1724f00d6acffd249a01b85482ae322c",
-  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "5626611d504dd205ea318d720a134816",
-  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "ea6804ac87fe463666deeeb6bc1a2dc1",
-  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "bfaf973230af195bfd9ec18cff3db17a",
+  "build/prefab/full/linux_arm64_gui/debug/ballisticakit": "a5196028d865c1da423e3b44f322f0b4",
+  "build/prefab/full/linux_arm64_gui/release/ballisticakit": "0eb477fffc094aa13e5c89176cc0f588",
+  "build/prefab/full/linux_arm64_server/debug/dist/ballisticakit_headless": "2a83c1baf22d8bf356fcc27f1471f957",
+  "build/prefab/full/linux_arm64_server/release/dist/ballisticakit_headless": "8c102382876ec9b3bf5157c2e692eb83",
+  "build/prefab/full/linux_x86_64_gui/debug/ballisticakit": "fb64489102c92ecfe2824c3044987f8a",
+  "build/prefab/full/linux_x86_64_gui/release/ballisticakit": "4e4a1a0187bfaf6133a59d245b2d1bbc",
+  "build/prefab/full/linux_x86_64_server/debug/dist/ballisticakit_headless": "fd2476f5995fd19dd50ef49e84cb797b",
+  "build/prefab/full/linux_x86_64_server/release/dist/ballisticakit_headless": "c6d32394a7420aa0d8a32c72df24de17",
+  "build/prefab/full/mac_arm64_gui/debug/ballisticakit": "4e1302cc8907bd2814df01cd61fc03ad",
+  "build/prefab/full/mac_arm64_gui/release/ballisticakit": "bde2ee121f12001e5b1d0e8a727dd4df",
+  "build/prefab/full/mac_arm64_server/debug/dist/ballisticakit_headless": "e956c21f24bbf0291b1d0eef980a0f71",
+  "build/prefab/full/mac_arm64_server/release/dist/ballisticakit_headless": "6bc7ba87119a7ba3d4a21ceda731311e",
+  "build/prefab/full/mac_x86_64_gui/debug/ballisticakit": "0f7e7ec2068443eb3cba3bd87d98b700",
+  "build/prefab/full/mac_x86_64_gui/release/ballisticakit": "43fe6217db63f5e1f471ec3bc926589f",
+  "build/prefab/full/mac_x86_64_server/debug/dist/ballisticakit_headless": "25da26e2ebc227d61da7261dff3b22da",
+  "build/prefab/full/mac_x86_64_server/release/dist/ballisticakit_headless": "383df77c017fa93d9abeb60fe6ecc7d3",
+  "build/prefab/full/windows_x86_gui/debug/BallisticaKit.exe": "1059e2cd37f10fe93fd85c06e7679cef",
+  "build/prefab/full/windows_x86_gui/release/BallisticaKit.exe": "6bf2fd565a36d8da031138ae2a593c8e",
+  "build/prefab/full/windows_x86_server/debug/dist/BallisticaKitHeadless.exe": "84363c68b54f2a38b91173600580a1f3",
+  "build/prefab/full/windows_x86_server/release/dist/BallisticaKitHeadless.exe": "44cfae2645b1b865d4965e859ee1d7b6",
  "build/prefab/lib/linux_arm64_gui/debug/libballisticaplus.a": "f3d305e647a7f77dd70a48f615cfd750",
  "build/prefab/lib/linux_arm64_gui/release/libballisticaplus.a": "931ce8eab9859d20ad86c47d196ba62c",
  "build/prefab/lib/linux_arm64_server/debug/libballisticaplus.a": "f3d305e647a7f77dd70a48f615cfd750",
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@ -1,4 +1,4 @@
-### 1.7.28 (build 21393, api 8, 2023-09-28)
+### 1.7.28 (build 21395, api 8, 2023-09-28)

 - Massively cleaned up code related to rendering and window systems (OpenGL,
  SDL, etc). This code had been growing into a nasty tangle for 15 years
--- a/ballisticakit-cmake/CMakeLists.txt
+++ b/ballisticakit-cmake/CMakeLists.txt
@ -341,6 +341,8 @@ set(BALLISTICA_SOURCES
  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/mesh_indexed_static_dynamic.h
  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/mesh_non_indexed.h
  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/mesh_renderer_data.h
+  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/nine_patch_mesh.cc
+  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/nine_patch_mesh.h
  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/sprite_mesh.h
  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/text_mesh.cc
  ${BA_SRC_ROOT}/ballistica/base/graphics/mesh/text_mesh.h
--- a/ballisticakit-windows/Generic/BallisticaKitGeneric.vcxproj
+++ b/ballisticakit-windows/Generic/BallisticaKitGeneric.vcxproj
@ -327,6 +327,8 @@
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_indexed_static_dynamic.h" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_non_indexed.h" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_renderer_data.h" />
+    <ClCompile Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.cc" />
+    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.h" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\sprite_mesh.h" />
    <ClCompile Include="..\..\src\ballistica\base\graphics\mesh\text_mesh.cc" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\text_mesh.h" />
--- a/ballisticakit-windows/Generic/BallisticaKitGeneric.vcxproj.filters
+++ b/ballisticakit-windows/Generic/BallisticaKitGeneric.vcxproj.filters
@ -415,6 +415,12 @@
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_renderer_data.h">
      <Filter>ballistica\base\graphics\mesh</Filter>
    </ClInclude>
+    <ClCompile Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.cc">
+      <Filter>ballistica\base\graphics\mesh</Filter>
+    </ClCompile>
+    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.h">
+      <Filter>ballistica\base\graphics\mesh</Filter>
+    </ClInclude>
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\sprite_mesh.h">
      <Filter>ballistica\base\graphics\mesh</Filter>
    </ClInclude>
--- a/ballisticakit-windows/Headless/BallisticaKitHeadless.vcxproj
+++ b/ballisticakit-windows/Headless/BallisticaKitHeadless.vcxproj
@ -322,6 +322,8 @@
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_indexed_static_dynamic.h" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_non_indexed.h" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_renderer_data.h" />
+    <ClCompile Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.cc" />
+    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.h" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\sprite_mesh.h" />
    <ClCompile Include="..\..\src\ballistica\base\graphics\mesh\text_mesh.cc" />
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\text_mesh.h" />
--- a/ballisticakit-windows/Headless/BallisticaKitHeadless.vcxproj.filters
+++ b/ballisticakit-windows/Headless/BallisticaKitHeadless.vcxproj.filters
@ -415,6 +415,12 @@
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\mesh_renderer_data.h">
      <Filter>ballistica\base\graphics\mesh</Filter>
    </ClInclude>
+    <ClCompile Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.cc">
+      <Filter>ballistica\base\graphics\mesh</Filter>
+    </ClCompile>
+    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\nine_patch_mesh.h">
+      <Filter>ballistica\base\graphics\mesh</Filter>
+    </ClInclude>
    <ClInclude Include="..\..\src\ballistica\base\graphics\mesh\sprite_mesh.h">
      <Filter>ballistica\base\graphics\mesh</Filter>
    </ClInclude>
--- a/src/assets/ba_data/python/baenv.py
+++ b/src/assets/ba_data/python/baenv.py
@ -52,7 +52,7 @@ if TYPE_CHECKING:

 # Build number and version of the ballistica binary we expect to be
 # using.
-TARGET_BALLISTICA_BUILD = 21393
+TARGET_BALLISTICA_BUILD = 21395
 TARGET_BALLISTICA_VERSION = '1.7.28'


--- a/src/ballistica/base/graphics/mesh/nine_patch_mesh.cc
+++ b/src/ballistica/base/graphics/mesh/nine_patch_mesh.cc
@ -0,0 +1,112 @@
+// Released under the MIT License. See LICENSE for details.
+
+#include "ballistica/base/graphics/mesh/nine_patch_mesh.h"
+
+namespace ballistica::base {
+
+NinePatchMesh::NinePatchMesh(float x, float y, float z, float width,
+                             float height, float border_left,
+                             float border_bottom, float border_right,
+                             float border_top) {
+  // Statically allocate enough for a full 9 patches even though we may
+  // not use them all (in cases of size 0 borders).
+  VertexSimpleFull verts[16];  // 4 vertical * 4 horizontal slices.
+  uint16_t indices[54];        // 9 patches * 2 triangles * 3 verts.
+
+  float y0 = y;
+  float y1 = y + border_bottom * height;
+  float y2 = y + (1.0 - border_top) * height;
+  float y3 = y + height;
+  auto v0 = 65535;
+  auto v1 = 32767;
+  auto v2 = 32767;
+  auto v3 = 0;
+
+  float x0 = x;
+  float x1 = x + border_left * width;
+  float x2 = x + (1.0 - border_right) * width;
+  float x3 = x + width;
+  auto u0 = 0;
+  auto u1 = 32767;
+  auto u2 = 32767;
+  auto u3 = 65535;
+
+  int icount{};
+
+  // Assign all 16 positions and uvs.
+  for (int yi = 0; yi < 4; ++yi) {
+    for (int xi = 0; xi < 4; ++xi) {
+      VertexSimpleFull* v = verts + yi * 4 + xi;
+
+      float xpos, ypos;
+      uint16_t uval, vval;
+      switch (xi) {
+        case 0:
+          xpos = x0;
+          uval = u0;
+          break;
+        case 1:
+          xpos = x1;
+          uval = u1;
+          break;
+        case 2:
+          xpos = x2;
+          uval = u2;
+          break;
+        default:
+          assert(xi == 3);
+          xpos = x3;
+          uval = u3;
+      }
+      switch (yi) {
+        case 0:
+          ypos = y0;
+          vval = v0;
+          break;
+        case 1:
+          ypos = y1;
+          vval = v1;
+          break;
+        case 2:
+          ypos = y2;
+          vval = v2;
+          break;
+        default:
+          assert(yi == 3);
+          ypos = y3;
+          vval = v3;
+      }
+
+      v->position[0] = xpos;
+      v->position[1] = ypos;
+      v->position[2] = z;
+      v->uv[0] = uval;
+      v->uv[1] = vval;
+    }
+  }
+
+  // Now add triangle draws for any of the 9 patches with width/height > 0.
+  for (int yi = 0; yi < 3; ++yi) {
+    for (int xi = 0; xi < 3; ++xi) {
+      VertexSimpleFull* v = verts + yi * 4 + xi;
+      VertexSimpleFull* vright = v + 1;
+      VertexSimpleFull* vtop = v + 4;
+
+      if (vright->position[0] > v->position[0]
+          && vtop->position[1] > v->position[1]) {
+        indices[icount++] = yi * 4 + xi;
+        indices[icount++] = yi * 4 + xi + 1;
+        indices[icount++] = (yi + 1) * 4 + xi + 1;
+
+        indices[icount++] = yi * 4 + xi;
+        indices[icount++] = (yi + 1) * 4 + xi + 1;
+        indices[icount++] = (yi + 1) * 4 + xi;
+      }
+    }
+  }
+  assert(icount <= 54);
+  SetIndexData(Object::New<MeshIndexBuffer16>(icount, indices));
+  SetData(Object::New<MeshBuffer<VertexSimpleFull>>(16, verts));
+}
+
+}  // namespace ballistica::base
--- a/src/ballistica/base/graphics/mesh/nine_patch_mesh.h
+++ b/src/ballistica/base/graphics/mesh/nine_patch_mesh.h
@ -0,0 +1,20 @@
+// Released under the MIT License. See LICENSE for details.
+
+#ifndef BALLISTICA_BASE_GRAPHICS_MESH_NINE_PATCH_MESH_H_
+#define BALLISTICA_BASE_GRAPHICS_MESH_NINE_PATCH_MESH_H_
+
+#include "ballistica/base/graphics/mesh/mesh_indexed_simple_full.h"
+
+namespace ballistica::base {
+
+// A mesh set up to draw images as 9-patches.
+class NinePatchMesh : public MeshIndexedSimpleFull {
+ public:
+  NinePatchMesh(float x, float y, float z, float width, float height,
+                float border_left, float border_bottom, float border_right,
+                float border_top);
+};
+
+}  // namespace ballistica::base
+
+#endif  // BALLISTICA_BASE_GRAPHICS_MESH_NINE_PATCH_MESH_H_
--- a/src/ballistica/base/ui/dev_console.cc
+++ b/src/ballistica/base/ui/dev_console.cc
@ -5,6 +5,7 @@
 #include "ballistica/base/app_mode/app_mode.h"
 #include "ballistica/base/audio/audio.h"
 #include "ballistica/base/graphics/component/simple_component.h"
+#include "ballistica/base/graphics/mesh/nine_patch_mesh.h"
 #include "ballistica/base/graphics/text/text_graphics.h"
 #include "ballistica/base/input/input.h"
 #include "ballistica/base/logic/logic.h"
@ -45,38 +46,34 @@ static auto XOffs(DevButtonAttach_ attach) -> float {
  return 0.0f;
 }

-static void DrawBasicButton(RenderPass* pass, TextGroup* tgrp, float tscale,
-                            float bottom, float x, float y, float width,
-                            float height, const Vector3f& fgcolor,
+static void DrawBasicButton(RenderPass* pass, Mesh* mesh, TextGroup* tgrp,
+                            float tscale, float bottom, float x, float y,
+                            float width, float height, const Vector3f& fgcolor,
                            const Vector3f& bgcolor) {
  SimpleComponent c(pass);
  c.SetTransparent(true);
  c.SetColor(bgcolor.x, bgcolor.y, bgcolor.z, 1.0f);
+  c.SetTexture(g_base->assets->SysTexture(SysTextureID::kCircle));
+  {
+    auto xf = c.ScopedTransform();
+    c.Translate(x, y + bottom, kDevConsoleZDepth);
+    c.DrawMesh(mesh);
+  }
+  // Draw our text.
  {
    auto xf = c.ScopedTransform();
    c.Translate(x + width * 0.5f, y + bottom + height * 0.5f,
                kDevConsoleZDepth);
-    // Draw our backing.
-    {
-      auto xf = c.ScopedTransform();
-      c.Scale(width, height);
-      c.DrawMeshAsset(g_base->assets->SysMesh(SysMeshID::kImage1x1));
-    }
-    // Draw our text.
+    float sc{0.6f * tscale};
+    c.Scale(sc, sc, 1.0f);
+    int elem_count = tgrp->GetElementCount();
    c.SetColor(fgcolor.x, fgcolor.y, fgcolor.z, 1.0f);
    c.SetFlatness(1.0f);
-    int elem_count = tgrp->GetElementCount();
    for (int e = 0; e < elem_count; e++) {
      c.SetTexture(tgrp->GetElementTexture(e));
-      {
-        auto xf = c.ScopedTransform();
-        float sc{0.6f * tscale};
-        c.Scale(sc, sc, 1.0f);
-        c.DrawMesh(tgrp->GetElementMesh(e));
-      }
+      c.DrawMesh(tgrp->GetElementMesh(e));
    }
  }
-  c.Submit();
 }

 /// Super-simple widget type for populating dev-console
@ -98,6 +95,7 @@ class DevConsole::Button_ : public DevConsole::Widget_ {
  float height;
  bool pressed{};
  Object::Ref<Runnable> call;
+  NinePatchMesh mesh;
  TextGroup text_group;
  float text_scale;

@ -110,7 +108,8 @@ class DevConsole::Button_ : public DevConsole::Widget_ {
        width{width},
        height{height},
        call{NewLambdaRunnable(lambda)},
-        text_scale{text_scale} {
+        text_scale{text_scale},
+        mesh(0.0f, 0.0f, 0.0f, width, height, 0.1f, 0.3f, 0.1f, 0.3f) {
    text_group.SetText(label, TextMesh::HAlign::kCenter,
                       TextMesh::VAlign::kCenter);
  }
@ -141,8 +140,8 @@ class DevConsole::Button_ : public DevConsole::Widget_ {

  void Draw(RenderPass* pass, float bottom) override {
    DrawBasicButton(
-        pass, &text_group, text_scale, bottom, x + XOffs(attach), y, width,
-        height,
+        pass, &mesh, &text_group, text_scale, bottom, x + XOffs(attach), y,
+        width, height,
        pressed ? Vector3f{0.0f, 0.0f, 0.0f} : Vector3f{0.8f, 0.7f, 0.8f},
        pressed ? Vector3f{0.8f, 0.7f, 0.8f} : Vector3f{0.25, 0.2f, 0.3f});
  }
@ -159,6 +158,7 @@ class DevConsole::ToggleButton_ : public DevConsole::Widget_ {
  bool on{};
  Object::Ref<Runnable> on_call;
  Object::Ref<Runnable> off_call;
+  NinePatchMesh mesh;
  TextGroup text_group;
  float text_scale;

@ -173,7 +173,8 @@ class DevConsole::ToggleButton_ : public DevConsole::Widget_ {
        height{height},
        on_call{NewLambdaRunnable(on_call)},
        off_call{NewLambdaRunnable(off_call)},
-        text_scale{text_scale} {
+        text_scale{text_scale},
+        mesh(0.0f, 0.0f, 0.0f, width, height, 0.1f, 0.3f, 0.1f, 0.3f) {
    text_group.SetText(label, TextMesh::HAlign::kCenter,
                       TextMesh::VAlign::kCenter);
  }
@ -205,8 +206,8 @@ class DevConsole::ToggleButton_ : public DevConsole::Widget_ {
  }

  void Draw(RenderPass* pass, float bottom) override {
-    DrawBasicButton(pass, &text_group, text_scale, bottom, x + XOffs(attach), y,
-                    width, height,
+    DrawBasicButton(pass, &mesh, &text_group, text_scale, bottom,
+                    x + XOffs(attach), y, width, height,
                    pressed ? Vector3f{1.0f, 1.0f, 1.0f}
                    : on    ? Vector3f{1.0f, 1.0f, 1.0f}
                            : Vector3f{0.8f, 0.7f, 0.8f},
@ -227,6 +228,7 @@ class DevConsole::TabButton_ : public DevConsole::Widget_ {
  bool selected{};
  Object::Ref<Runnable> call;
  TextGroup text_group;
+  NinePatchMesh mesh;
  float text_scale;

  template <typename F>
@ -240,7 +242,8 @@ class DevConsole::TabButton_ : public DevConsole::Widget_ {
        width{width},
        height{height},
        call{NewLambdaRunnable(call)},
-        text_scale{text_scale} {
+        text_scale{text_scale},
+        mesh(0.0f, 0.0f, 0.0f, width, height, 0.1f, 0.3f, 0.1f, 0.0f) {
    text_group.SetText(label, TextMesh::HAlign::kCenter,
                       TextMesh::VAlign::kCenter);
  }
@ -270,8 +273,8 @@ class DevConsole::TabButton_ : public DevConsole::Widget_ {
  }

  void Draw(RenderPass* pass, float bottom) override {
-    DrawBasicButton(pass, &text_group, text_scale, bottom, x + XOffs(attach), y,
-                    width, height,
+    DrawBasicButton(pass, &mesh, &text_group, text_scale, bottom,
+                    x + XOffs(attach), y, width, height,
                    pressed    ? Vector3f{1.0f, 1.0f, 1.0f}
                    : selected ? Vector3f{1.0f, 1.0f, 1.0f}
                               : Vector3f{0.8f, 0.7f, 0.8f},
--- a/src/ballistica/shared/ballistica.cc
+++ b/src/ballistica/shared/ballistica.cc
@ -39,7 +39,7 @@ auto main(int argc, char** argv) -> int {
 namespace ballistica {

 // These are set automatically via script; don't modify them here.
-const int kEngineBuildNumber = 21393;
+const int kEngineBuildNumber = 21395;
 const char* kEngineVersion = "1.7.28";
 const int kEngineApiVersion = 8;