Integrate nuklear into engine

engine/breeze/game.h

@@ -19,13 +19,19 @@ typedef struct BzAppDesc {
     BzAppRenderFunc render;
     BzAppDeinitFunc deinit;
 
+    bool useNuklear;
+
     void *userData;
 } BzAppDesc;
 
+extern struct nk_context *NK;
+
 extern bool bzMain(BzAppDesc *appDesc, int argc, const char **argv);
 
 #ifdef BZ_ENTRYPOINT
-#include <raylib.h>
+#include <raylib-nuklear.h>
+
+struct nk_context *NK = NULL;
 
 // https://www.raylib.com/examples/core/loader.html?name=core_custom_logging
 static void bzRaylibLogger(int msgType, const char *text, va_list args) {
@@ -85,16 +91,27 @@ int main(int argc, const char **argv) {
     SetTargetFPS(appDesc.fps);
     // Initialize modules
 
+    if (appDesc.useNuklear) {
+        NK = InitNuklear(16);
+    }
+
     // User initialize
     if (appDesc.init && !appDesc.init(appDesc.userData)) {
         return 1;
     }
 
     while (!WindowShouldClose()) {
+        if (NK)
+            UpdateNuklear(NK);
         if (appDesc.update)
             appDesc.update(0.0f, appDesc.userData);
+
+        BeginDrawing();
         if (appDesc.render)
             appDesc.render(0.0f, appDesc.userData);
+        if (NK)
+            DrawNuklear(NK);
+        EndDrawing();
     }
 
     // User deinitialize
@@ -102,6 +119,10 @@ int main(int argc, const char **argv) {
         appDesc.deinit(appDesc.userData);
 
     // Deinitialize modules
+    if (NK) {
+        UnloadNuklear(NK);
+        NK = NULL;
+    }
 
     CloseWindow();
     bzLoggerDeinit();

engine/tests/nuklear_test.c

@@ -1,39 +1,40 @@
-#include <raylib-nuklear.h>
+#define BZ_ENTRYPOINT
+#include <breeze.h>
 
-int main() {
-    InitWindow(640, 480, "raylib-nuklear example");
+enum {EASY, HARD};
+static int op = EASY;
+static float value = 0.6f;
+static int i =  20;
 
-    // Create the Nuklear Context
-    int fontSize = 10;
-    struct nk_context *ctx = InitNuklear(fontSize);
+void render(float dt, int *game) {
+    ClearBackground(WHITE);
 
-    while (!WindowShouldClose()) {
-        // Update the Nuklear context, along with input
-        UpdateNuklear(ctx);
-
-        // Nuklear GUI Code
-        // https://github.com/Immediate-Mode-UI/Nuklear/wiki/Window
-        if (nk_begin(ctx, "Nuklear", nk_rect(100, 100, 220, 220),
-                     NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) {
-            if (nk_button_label(ctx, "Button")) {
-                // Button was clicked!
-            }
+    if (nk_begin(NK, "Show", nk_rect(50, 50, 220, 220),
+                 NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) {
+        // fixed widget pixel width
+        nk_layout_row_static(NK, 30, 80, 1);
+        if (nk_button_label(NK, "button")) {
+            // event handling
         }
-        nk_end(ctx);
-
-        // Render
-        BeginDrawing();
-        ClearBackground(RAYWHITE);
-
-        // Render the Nuklear GUI
-        DrawNuklear(ctx);
-
-        EndDrawing();
+        // fixed widget window ratio width
+        nk_layout_row_dynamic(NK, 30, 2);
+        if (nk_option_label(NK, "easy", op == EASY)) op = EASY;
+        if (nk_option_label(NK, "hard", op == HARD)) op = HARD;
+        // custom widget pixel width
+        nk_layout_row_begin(NK, NK_STATIC, 30, 2);
+        {
+            nk_layout_row_push(NK, 50);
+            nk_label(NK, "Volume:", NK_TEXT_LEFT);
+            nk_layout_row_push(NK, 110);
+            nk_slider_float(NK, 0, &value, 1.0f, 0.1f);
+        }
+        nk_layout_row_end(NK);
     }
+    nk_end(NK);
+}
 
-    // De-initialize the Nuklear GUI
-    UnloadNuklear(ctx);
-
-    CloseWindow();
-    return 0;
+bool bzMain(BzAppDesc *appDesc, int argc, const char **argv) {
+    appDesc->render = (BzAppRenderFunc) render;
+    appDesc->useNuklear = true;
+    return true;
 }

game/main.c

@@ -59,14 +59,22 @@ void render(float dt, Game *game) {
 
     camera->zoom += ((float)GetMouseWheelMove() * 0.05f);
 
-    BeginDrawing();
     BeginMode2D(*camera);
     ClearBackground(RAYWHITE);
 
     bzTileMapDraw(&game->map);
 
     EndMode2D();
-    EndDrawing();
+
+    if (nk_begin(NK, "Show", nk_rect(50, 50, 220, 220),
+                 NK_WINDOW_BORDER|NK_WINDOW_MOVABLE|NK_WINDOW_CLOSABLE)) {
+        // fixed widget pixel width
+        nk_layout_row_static(NK, 30, 80, 1);
+        if (nk_button_label(NK, "button")) {
+            // event handling
+        }
+    }
+    nk_end(NK);
 }
 
 bool bzMain(BzAppDesc *appDesc, int argc, const char **argv) {
@@ -80,6 +88,7 @@ bool bzMain(BzAppDesc *appDesc, int argc, const char **argv) {
     appDesc->render = (BzAppRenderFunc) render;
 
     appDesc->userData = &GAME;
+    appDesc->useNuklear = true;
 
     return true;
 }