Changes

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.10)
+project(DEMOGAMECNA)
+
+set(CMAKE_CXX_STANDARD 17)
+
+add_subdirectory(../cna CNA)
+include_directories(../cna/include CNA)
+
+add_executable(DEMOGAMECNA
+    src/Main.cpp
+    src/Game1.cpp
+)
+
+find_package(SDL3 REQUIRED)
+find_package(SDL3_image REQUIRED)
+
+target_link_libraries(DEMOGAMECNA PRIVATE CNA SDL3::SDL3)

demo-game-cna.cbp

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_project_file>
+	<FileVersion major="1" minor="6" />
+	<Project>
+		<Option title="demo-game-cna" />
+		<Option pch_mode="2" />
+		<Option compiler="gcc" />
+		<Build>
+			<Target title="Debug">
+				<Option output="bin/Debug/demo-game-cna" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Debug/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-g" />
+				</Compiler>
+			</Target>
+			<Target title="Release">
+				<Option output="bin/Release/demo-game-cna" prefix_auto="1" extension_auto="1" />
+				<Option object_output="obj/Release/" />
+				<Option type="1" />
+				<Option compiler="gcc" />
+				<Compiler>
+					<Add option="-O2" />
+				</Compiler>
+				<Linker>
+					<Add option="-s" />
+				</Linker>
+			</Target>
+		</Build>
+		<Compiler>
+			<Add option="-Wall" />
+			<Add option="-fexceptions" />
+		</Compiler>
+		<Unit filename="src/Game1.cpp" />
+		<Unit filename="src/Game1.h" />
+		<Unit filename="src/Main.cpp" />
+		<Extensions />
+	</Project>
+</CodeBlocks_project_file>

demo-game-cna.layout

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+<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
+<CodeBlocks_layout_file>
+	<FileVersion major="1" minor="0" />
+	<ActiveTarget name="Debug" />
+	<File name="src/Game1.h" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="586" topLine="4" />
+		</Cursor>
+	</File>
+	<File name="src/Game1.cpp" open="1" top="1" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="1552" topLine="39" />
+		</Cursor>
+	</File>
+	<File name="src/Main.cpp" open="1" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+		<Cursor>
+			<Cursor1 position="0" topLine="0" />
+		</Cursor>
+	</File>
+</CodeBlocks_layout_file>

src/Game1.cpp

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+#include "Game1.h"
+#include <SDL3_image/SDL_image.h>
+
+#include <cstdlib>
+#include <iostream>
+
+Game1::Game1() {
+    graphicsDevice = new CNA::GraphicsDevice();
+    spriteBatch = new CNA::SpriteBatch(graphicsDevice);
+
+
+    r = ((float)randint(255))/255.0f;
+    g = ((float)(randint(255)))/255.0f;
+    b = ((float)(randint(255)))/255.0f;
+    }
+
+    int Game1::randint() {return rand();}
+    int Game1::randint(int max) {return randint()%max;}
+
+Game1::~Game1() {
+    delete spriteBatch;
+    delete graphicsDevice;
+}
+void Game1::LoadContent() {
+    playerTexture = LoadTexture("Content/player.png");
+    if (playerTexture == nullptr) {
+    std::cerr << "Unable to create texture: " << SDL_GetError() << std::endl;
+}
+
+    playerX = 100;
+    playerY = 100;
+}
+
+void Game1::Update(float deltaTime) {
+    playerX += xs * 100 * deltaTime;  // Player's move
+    playerY += ys * 100 * deltaTime;  // Player's move
+    if(playerX<0 || playerX > 800)xs=xs*(-1);
+    if(playerY<0 || playerY > 600)ys=ys*(-1);
+}
+
+void Game1::Draw() {
+    spriteBatch->Begin();  // Starts rendering
+/*
+    float r_ = ((float)(rand()%10)) /255.0f ;
+    float g_ = ((float)(rand()%10)) /255.0f ;
+    float b_ = ((float)(rand()%10)) /255.0f ;
+
+    bool rs = (rand() % 100) > 50;
+    bool gs = (rand() % 100) > 50;
+    bool bs = (rand() % 100) > 50;
+    if(rs)r_=r_*(-1);
+    if(rs)g_=g_*(-1);
+    if(rs)b_=b_*(-1);
+    r=r+r_;
+    g=g+g_;
+    b=b+b_;
+
+    if(r<0.0f)r=0.0f;
+    if(g<0.0f)g=0.0f;
+    if(b<0.0f)b=0.0f;
+    if(r>1.0f)r=1.0f;
+    if(g>1.0f)g=1.0f;
+    if(b>1.0f)b=1.0f;
+    */
+    /*
+    if(randint(1000)>990){r=1.0f;g=0.0f;b=0.0f;}
+    if(randint(1000)>990){g=0.0f;g=1.0f;b=0.0f;}
+    if(randint(1000)>990){b=0.0f;g=0.0f;b=1.0f;}
+    */
+
+std::cout<<" "<<r<<" "<<g<<" "<<b;
+
+
+    graphicsDevice->Clear(r,g,b,0.5f);
+    //graphicsDevice->Present();
+    spriteBatch->Draw(playerTexture, playerX, playerY);
+
+    spriteBatch->End();  // Stops rendering
+}
+
+SDL_Texture* Game1::LoadTexture(const std::string& path) {
+    return IMG_LoadTexture(graphicsDevice->GetRenderer(), path.c_str());
+}
+

src/Game1.h

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+#ifndef GAME1_H
+#define GAME1_H
+
+#include "CNA/Game.h"
+#include "CNA/Texture2D.h"
+#include "CNA/GraphicsDevice.h"
+#include "CNA/SpriteBatch.h"
+#include <string>
+
+class Game1 : public CNA::Game {
+public:
+    Game1();
+    virtual ~Game1();
+    void LoadContent() override;
+    void Update(float deltaTime) override;
+    void Draw() override;
+
+    SDL_Texture* LoadTexture(const std::string& path);
+
+private:
+
+    int randint();
+    int randint(int max);
+    //CNA::Texture2D* playerTexture;
+    SDL_Texture* playerTexture;
+    float playerX;
+    float playerY;
+    int xs=1;
+    int ys=1;
+
+    float r;
+    float g;
+    float b;
+
+protected:
+    CNA::GraphicsDevice* graphicsDevice;
+    CNA::SpriteBatch* spriteBatch;
+};
+
+#endif // GAME1_H

src/Main.cpp

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+#include "Game1.h"
+#include <iostream>
+
+int main(int argc, char* argv[]) {
+    std::cout<<"Starting game" <<std::endl;
+    Game1 game;
+    game.Run();  // Launching of the game.
+    return 0;
+}