fase 1: jail i game a c++ idiomàtic (raii, info::ctx, cheats arreglats)

source/core/jail/jgame.cpp

@@ -1,42 +1,54 @@
-#include "core/jail/jgame.hpp"
-
-bool eixir = false;
-Uint32 updateTicks = 0;
-Uint32 updateTime = 0;
-Uint32 cycle_counter = 0;
-
-void JG_Init() {
-    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
-    // SDL_WM_SetCaption( title, NULL );
-    updateTime = SDL_GetTicks();
-}
-
-void JG_Finalize() {
-    SDL_Quit();
-}
-
-void JG_QuitSignal() {
-    eixir = true;
-}
-
-bool JG_Quitting() {
-    return eixir;
-}
-
-void JG_SetUpdateTicks(Uint32 milliseconds) {
-    updateTicks = milliseconds;
-}
-
-bool JG_ShouldUpdate() {
-    if (SDL_GetTicks() - updateTime > updateTicks) {
-        updateTime = SDL_GetTicks();
-        cycle_counter++;
-        return true;
-    } else {
-        return false;
-    }
-}
-
-Uint32 JG_GetCycleCounter() {
-    return cycle_counter;
-}
+#include "core/jail/jgame.hpp"
+
+namespace {
+
+bool quitting = false;
+Uint32 update_ticks = 0;
+Uint32 update_time = 0;
+Uint32 cycle_counter = 0;
+Uint32 last_delta_time = 0;
+
+}  // namespace
+
+void JG_Init() {
+    SDL_Init(SDL_INIT_VIDEO | SDL_INIT_AUDIO);
+    update_time = SDL_GetTicks();
+    last_delta_time = update_time;
+}
+
+void JG_Finalize() {
+    SDL_Quit();
+}
+
+void JG_QuitSignal() {
+    quitting = true;
+}
+
+bool JG_Quitting() {
+    return quitting;
+}
+
+void JG_SetUpdateTicks(Uint32 milliseconds) {
+    update_ticks = milliseconds;
+}
+
+bool JG_ShouldUpdate() {
+    const Uint32 now = SDL_GetTicks();
+    if (now - update_time > update_ticks) {
+        update_time = now;
+        cycle_counter++;
+        return true;
+    }
+    return false;
+}
+
+Uint32 JG_GetCycleCounter() {
+    return cycle_counter;
+}
+
+Uint32 JG_GetDeltaMs() {
+    const Uint32 now = SDL_GetTicks();
+    const Uint32 delta = now - last_delta_time;
+    last_delta_time = now;
+    return delta;
+}