moved from h4570/tyra

src/engine/engine.cpp

@@ -0,0 +1,108 @@
+/*
+# ______       ____   ___
+#   |     \/   ____| |___|    
+#   |     |   |   \  |   |       
+#-----------------------------------------------------------------------
+# Copyright 2020, tyra - https://github.com/h4570/tyra
+# Licenced under Apache License 2.0
+# Sandro Sobczyński <sandro.sobczynski@gmail.com>
+*/
+
+#include "include/engine.hpp"
+
+#include <kernel.h>
+#include <stdio.h>
+#include <sifrpc.h>
+#include <time.h>
+#include <cstdlib>
+
+#include "include/modules/vu1.hpp"
+#include "include/utils/debug.hpp"
+
+// VU1 micro program
+extern u32 VU1Draw3D_CodeStart __attribute__((section(".vudata")));
+extern u32 VU1Draw3D_CodeEnd __attribute__((section(".vudata")));
+//
+
+// ----
+// Constructors/Destructors
+// ----
+
+Engine::Engine()
+{
+    SifInitRpc(0);
+    srand(time(NULL));
+    VU1::uploadProgram(0, &VU1Draw3D_CodeStart, &VU1Draw3D_CodeEnd);
+    audio.startThread();
+    isInitialized = 0;
+    isScreenInitialized = 0;
+    mainThreadId = GetThreadId();
+}
+
+Engine::~Engine() {}
+
+// ----
+// Methods
+// ----
+
+void Engine::setScreen(ScreenSettings &t_settings)
+{
+    screen = t_settings;
+    isScreenInitialized = true;
+}
+
+void Engine::setDefaultScreen()
+{
+    screen.projectionScale = 4096.0F;
+    screen.nearPlaneDist = 2.0F;
+    screen.farPlaneDist = 2000.0F;
+    screen.fov = 60.0F;
+    screen.aspectRatio = 4.0F / 3.0F;
+    screen.width = 640.0F;
+    screen.height = 480.0F;
+    isScreenInitialized = true;
+}
+
+void Engine::init(Game *t_game, u32 t_gifPacketSize)
+{
+    if (!isScreenInitialized)
+        PRINT_ERR("Cant init because screen was not set!");
+    else if (isInitialized)
+        PRINT_ERR("Already initialized!");
+    else
+    {
+        game = t_game;
+        renderer = new Renderer(t_gifPacketSize, &screen);
+        isInitialized = true;
+        game->onInit();
+        gameLoop();
+    }
+}
+
+/** Do not call this method. This is used in gameLoop() to maintain multithreading */
+void Engine::wakeup(s32 t_alarmId, u16 t_time, void *t_common)
+{
+    (void)t_alarmId;
+    (void)t_time;
+    iWakeupThread(*(int *)t_common);
+    ExitHandler();
+}
+
+void Engine::gameLoop()
+{
+    for (;;)
+    {
+        pad.update();
+        game->onUpdate();
+        if (fpsDelayer++ >= 4)
+        {
+            fps = timer.getFPS();
+            fpsDelayer = 0;
+        }
+        timer.primeTimer();
+        renderer->endFrame(fps);
+        /** -6~ FPS */
+        SetAlarm(fps > 49.0F ? 24 : 48, &Engine::wakeup, &mainThreadId);
+        SleepThread();
+    }
+}