Changeset 0807aeb in opengl-game for vulkan-game.hpp

Timestamp:

Mar 10, 2020, 2:53:34 AM (5 years ago)

Author:

Dmitry Portnoy <dmp1488@…>

Branches:

feature/imgui-sdl, master, points-test

Children:

22217d4

Parents:

44f23af

git-author:

Dmitry Portnoy <dmp1488@…> (03/10/20 00:43:57)

git-committer:

Dmitry Portnoy <dmp1488@…> (03/10/20 02:53:34)

Message:

Spawn asteroids at a regular interval and make them move in the player's direction, change the movement of all game objects to depend on elapsed time and be framerate-independent, and switch from SDL2 timers to the C++ chrono library

File:

• vulkan-game.hpp (modified) (4 diffs)

vulkan-game.hpp

@@ -1 +1 @@
 #ifndef _VULKAN_GAME_H
 #define _VULKAN_GAME_H
+
+#include <chrono>
 
 #define GLM_FORCE_RADIANS
@@ -15 +17 @@
 
 using namespace glm;
+using namespace std::chrono;
 
 #ifdef NDEBUG
@@ -182 +185 @@
       UBO_VP_mats asteroid_VP_mats;
 
-      Uint64 curTime, prevTime;
-      double elapsedTime;
+      time_point<steady_clock> startTime;
+      float curTime, prevTime, elapsedTime;
+
+      float shipSpeed = 0.5f;
+      float asteroidSpeed = 2.0f;
+
+      float spawnRate_asteroid = 0.5;
+      float lastSpawn_asteroid;
 
       bool initWindow(int width, int height, unsigned char guiFlags);
@@ -286 +295 @@
 }
 
+// TODO: Just pass in the single object instead of a list of all of them
 template<class VertexType, class SSBOType>
 void VulkanGame::updateObject(vector<SceneObject<VertexType, SSBOType>>& objects,