Merge pull request #17 from KaranAhlawat/dev

Add demo tool, update root CMakeLists.txt, and update compile_and_run.sh script

Author: vmarcella

Diff for: CMakeLists.txt

@@ -17,6 +17,7 @@ project(lambda)
 
 option(LAMBDA_TOOLS_BUILD_SANDBOX "Sandbox for testing lambda" OFF)
 option(LAMBDA_TOOLS_BUILD_MATHBOX "Sandbox for testing math functions" OFF)
+option(LAMBDA_TOOLS_BUILD_DEMO "Basic application demonstrating lambda" OFF)
 option(LAMBDA_ENGINE_BUILD_TESTS "Build tests for lambda" OFF)
 
 file(
@@ -121,3 +122,7 @@ endif()
 if (${LAMBDA_TOOLS_BUILD_MATHBOX})
   add_subdirectory(${CMAKE_SOURCE_DIR}/tools/mathbox)
 endif()
+
+if (${LAMBDA_TOOLS_BUILD_DEMO})
+  add_subdirectory(${CMAKE_SOURCE_DIR}/tools/demo)
+endif()

Diff for: scripts/compile_and_run.sh

@@ -57,6 +57,7 @@ if [ "$LAMBDA_build" = "Release" ] || [ "$LAMBDA_build" = "Debug" ]; then
         -DDISTRIBUTION_BUILD=False \
         -DLAMBDA_TOOLS_BUILD_SANDBOX=ON \
         -DLAMBDA_TOOLS_BUILD_MATHBOX=ON \
+        -DLAMBDA_TOOLS_BUILD_DEMO=ON \
         -G Ninja
 elif [ "$LAMBDA_build" = "Dist" ]; then
     lambda_log_info "Compiling a distribution build for the engine."
@@ -65,6 +66,7 @@ elif [ "$LAMBDA_build" = "Dist" ]; then
         -DDISTRIBUTION_BUILD=True \
         -DLAMBDA_TOOLS_BUILD_SANDBOX=ON \
         -DLAMBDA_TOOLS_BUILD_MATHBOX=ON \
+        -DLAMBDA_TOOLS_BUILD_DEMO=ON \
         -G Ninja
 else
     lambda_log_fatal "You need to pass a build type in order to compile a tool."

Diff for: tools/demo/CMakeLists.txt

@@ -0,0 +1,8 @@
+project(demo)
+
+set(APP_SRC src/main.cpp)
+
+add_executable(demo ${APP_SRC})
+
+target_include_directories(demo PRIVATE ${LAMBDA_ENGINE_INCLUDE_DIR})
+target_link_libraries(demo PRIVATE lambda)

Diff for: tools/demo/src/main.cpp

@@ -0,0 +1,47 @@
+#include "Lambda/Lambda.h"
+#include "Lambda/core/Entrypoint.h"
+
+using namespace lambda::core;
+using namespace lambda::lib;
+
+// Our Layer to receive events and hook into the update loop within lambda. You
+// can make as many layers as you like!
+class HelloLayer : public layers::Layer {
+  public:
+    HelloLayer(){};
+    // OnUpdate provides you when the last update occurred as a delta that
+    // can be computed as whatever precision is needed.
+    void OnUpdate(TimeStep delta) override {
+      LAMBDA_CLIENT_INFO("{} seconds since last update.",
+                         delta.InSeconds<double>());
+    }
+
+    // Provided by the Application, Events are generic pointers that are
+    // used for handling more specific types of events using the
+    // events::Dispacther
+    void OnEvent(events::Event *const event) override{};
+
+    void OnAttach() override{};
+
+    void OnDetach() override{};
+
+    void OnImGuiRender() override{};
+};
+
+// Our Application instance.
+class HelloLambda : public Application {
+  public:
+    // The constructor servers as your application's way of initializing the state
+    // of your application before running.
+    HelloLambda() : Application() {
+      PushLayer(memory::CreateUnique<HelloLayer>());
+    }
+};
+
+// This function becomes your new main function. Any logic here is used before
+// Creating an instance of your Application (In this case, HelloLambda). Lambda
+// needs this function implemented and returning a valid Application instance
+// order to instantiate
+memory::Unique<Application> lambda::core::CreateApplication() {
+  return memory::CreateUnique<HelloLambda>();
+}

Diff for: tools/mathbox/CMakeLists.txt

@@ -15,4 +15,4 @@ file(
 add_executable(mathbox ${APP_SRC})
 
 target_include_directories(mathbox PRIVATE ${LAMBDA_ENGINE_INCLUDE_DIR})
-target_link_libraries(mathbox PRIVATE lambda)
+target_link_libraries(mathbox PRIVATE lambda)