06: add introduction to monogame

.gitignore

@@ -4,3 +4,4 @@ build/
 *.o
 compile_commands.json
 .idea/
+bin/

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "06-monogame/Introduction/themes/hugo-bearcub"]
+	path = 06-monogame/Introduction/themes/hugo-bearcub
+	url = https://github.com/clente/hugo-bearcub

05-opengl/assets/shaders/fragment.glsl

@@ -2,10 +2,10 @@
 out vec4 color; 
 in vec2 tex_coord;
 
-uniform sampler2D texture1;
+uniform sampler2D sampler;
 
 void main() {
-    color = texture(texture1, tex_coord);
+    color = texture(sampler, tex_coord);
 //    color = vec4(1.0, 0.0, 0.0, 1.0);
 
     if (color.a < 0.1) 

05-opengl/assets/shaders/vertex.glsl

@@ -3,18 +3,12 @@
 layout (location = 0) in vec3 pos; 
 layout (location = 1) in vec2 texture_coord; 
 
-uniform vec3 size;
-uniform ivec3 offset;
-uniform mat4 model;
 uniform mat4 view;
 uniform mat4 projection; 
 
 out vec2 tex_coord;
 
 void main() {
-    vec3 new_pos = pos.xyz + offset.xyz; 
-    new_pos = new_pos.xyz * size.xyz;
-
-    gl_Position = projection * view * model * vec4(new_pos.xyz, 1.0);
+    gl_Position = projection * view * vec4(pos.xyz, 1.0);
     tex_coord = texture_coord;
 }

05-opengl/src/game.cpp

@@ -13,7 +13,10 @@
 Game::Game(GLFWwindow *window) {
     this->window = window;
     this->program = Program();
+
     stbi_set_flip_vertically_on_load(true);
+
+    glGetIntegerv(GL_MAX_TEXTURE_IMAGE_UNITS, &this->texture_slots);
 }
 
 // code this later lol
@@ -41,14 +44,40 @@ int Game::setup(int initial_width, int initial_height) {
     }
 
     glUseProgram(this->program.id);
+
+    glGenVertexArrays(1, &this->vao);
+    glGenBuffers(1, &this->vbo);
+    glGenBuffers(1, &this->ebo);
+
+    glBindVertexArray(this->vao);
+    glBindBuffer(GL_ARRAY_BUFFER, this->vbo);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->ebo);
+
     return 0;
 }
 
 void Game::run() {
+    this->counter = 0;
+    this->vbo_offset = 0;
+    this->ebo_offset = 0; 
+
     Sprite sprite("assets/player/idle.png", SPLIT_TEXTURE);
     sprite.bake();
     this->sprites.push_back(&sprite);
 
+    glBindVertexArray(this->vao);
+    glBindBuffer(GL_ARRAY_BUFFER, this->vbo);
+    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->ebo);
+
+    glBufferData(GL_ARRAY_BUFFER, sizeof(struct vertex) * 4 * this->texture_slots, nullptr, GL_DYNAMIC_DRAW);
+    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int) * 6 * this->texture_slots, nullptr, GL_DYNAMIC_DRAW);
+
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void *) offsetof(vertex, position));
+    glEnableVertexAttribArray(0);
+
+    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void *) offsetof(vertex, texture));
+    glEnableVertexAttribArray(1);
+
     Game::logic();
 }
 
@@ -74,8 +103,24 @@ void Game::logic() {
         glClearColor(0, 0, 0, 1); 
         glClear(GL_COLOR_BUFFER_BIT); 
 
-        for (int i = 0; i < this->sprites.size(); i++) 
-            Game::draw(this->sprites[i]);
+
+        for (int sprite = 0; sprite < this->sprites.size(); sprite++, counter++) {
+            Game::load(this->sprites[sprite], this->counter);
+
+            std::cout << "Counter: " << counter << " Texture slots: " << this->texture_slots << std::endl;
+            if (counter > 0 && counter % this->texture_slots == 0) {
+                Game::draw();
+                this->counter = 0;
+                this->vbo_offset = 0;
+                this->ebo_offset = 0; 
+            }
+
+        }
+
+        Game::draw();
+        this->counter = 0;
+        this->vbo_offset = 0;
+        this->ebo_offset = 0; 
         
         glfwPollEvents(); 
         glfwSwapBuffers(this->window);
@@ -84,16 +129,25 @@ void Game::logic() {
     glBindVertexArray(0);
 }
 
-void Game::draw(Sprite *sprite) {
+void Game::load(Sprite *sprite, int count) {
     unsigned int program = this->program.id;
     glUseProgram(program);
 
-    glUniform3i(glGetUniformLocation(program, "offset"), sprite->pos.x, sprite->pos.y, sprite->pos.z); 
-    glUniform3f(glGetUniformLocation(program, "size"), sprite->size.x, sprite->size.y, sprite->size.z);
-    glUniform1i(glGetUniformLocation(program, "texture1"), 0);
+    glUniform1i(glGetUniformLocation(program, "sampler"), count);
 
-    glm::mat4 model = glm::mat4(1.0f);
-    model = glm::translate(model, glm::vec3(0.0f, 0.0f, 0.0f));
+    glBufferSubData(GL_ARRAY_BUFFER, vbo_offset, sizeof(struct vertex) * sprite->vertices.size(), sprite->vertices.data());
+    glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, ebo_offset, sizeof(int) * sprite->indices.size(), sprite->indices.data());
+
+    vbo_offset += sizeof(struct vertex) * sprite->vertices.size(); 
+    ebo_offset += sizeof(int) * sprite->indices.size();
+    
+    glActiveTexture(GL_TEXTURE0 + count);
+    glBindTexture(GL_TEXTURE_2D, sprite->texture.texture_id);
+}
+
+void Game::draw() {
+    unsigned int program = this->program.id;
+    glUseProgram(program);
 
     glm::mat4 view = glm::mat4(1.0f);
     view = glm::translate(view, glm::vec3(0.0f, 0.0f, -3.0f));
@@ -109,19 +163,10 @@ void Game::draw(Sprite *sprite) {
 
     projection = glm::ortho(-half_width/100, half_width/100, -half_height/100, half_height/100, 0.1f, 100.0f);
 
-    glUniformMatrix4fv(glGetUniformLocation(program, "model"), 1, GL_FALSE, glm::value_ptr(model));
     glUniformMatrix4fv(glGetUniformLocation(program,"view"), 1, GL_FALSE, glm::value_ptr(view));
     glUniformMatrix4fv(glGetUniformLocation(program, "projection"), 1, GL_FALSE, glm::value_ptr(projection));
 
-    glBindVertexArray(sprite->vao);
-    glBindBuffer(GL_ARRAY_BUFFER, sprite->vbo);
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, sprite->ebo);
+    glDrawElements(GL_TRIANGLES, this->sprites[0]->indices.size(), GL_UNSIGNED_INT, 0);
+    std::cout << "Error: " << glGetError() << std::endl;
 
-    glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(struct vertex) * sprite->vertices.size(), sprite->vertices.data());
-    glBufferSubData(GL_ELEMENT_ARRAY_BUFFER, 0, sizeof(int) * sprite->indices.size(), sprite->indices.data());
-
-    glActiveTexture(GL_TEXTURE0); 
-    glBindTexture(GL_TEXTURE_2D, sprite->texture.texture_id);
-
-    glDrawElements(GL_TRIANGLES, sprite->indices.size(), GL_UNSIGNED_INT, 0);
 }

05-opengl/src/game.hpp

@@ -12,15 +12,23 @@ public:
     int setup(int initial_width, int initial_height);
     void run();
     void logic();
-    void draw(Sprite *sprite);
+    void load(Sprite *sprite, int counter);
+    void draw();
 
     // callbacks 
     static void input_callback(GLFWwindow *window, int key, int scancode, int action, int mods);
     static void resize_callback(GLFWwindow *window, int new_width, int new_height);
 
     GLFWwindow *window;
+    Program program;
 
     std::vector<Sprite *> sprites;
 
-    Program program;
+    int texture_slots;
+    unsigned int vao; 
+    unsigned int vbo; 
+    unsigned int ebo;
+    unsigned int counter;
+    unsigned int vbo_offset;
+    unsigned int ebo_offset;
 };

05-opengl/src/sprite.cpp

@@ -23,10 +23,6 @@ Sprite::Sprite(const char *path, enum TextureType type) : texture(type) {
 
     stbi_image_free(image_bytes);
 
-    glGenVertexArrays(1, &this->vao);
-    glGenBuffers(1, &this->vbo);
-    glGenBuffers(1, &this->ebo);
-
     this->pos = glm::vec3(0.0f);
     this->size = glm::vec3(1.0f);
     this->rot = glm::vec3(0.0f);
@@ -60,20 +56,4 @@ void Sprite::bake() {
             v->texture[1] = tex_y;
         }
     }
-
-    glBindVertexArray(this->vao); 
-
-    glBindBuffer(GL_ARRAY_BUFFER, this->vbo);
-    glBufferData(GL_ARRAY_BUFFER, this->vertices.size() * sizeof(struct vertex), nullptr, GL_DYNAMIC_DRAW);
-
-    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, this->ebo);
-    glBufferData(GL_ELEMENT_ARRAY_BUFFER, this->indices.size() * sizeof(int), nullptr, GL_DYNAMIC_DRAW);
-
-    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void *) offsetof(vertex, position));
-    glEnableVertexAttribArray(0);
-
-    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(struct vertex), (void *) offsetof(vertex, texture));
-    glEnableVertexAttribArray(1);
-
-    glBindVertexArray(0);
 }

05-opengl/src/sprite.hpp

@@ -22,10 +22,6 @@ public:
     std::vector<struct vertex> vertices; 
     std::vector<int> indices;
 
-    unsigned int vao; 
-    unsigned int vbo; 
-    unsigned int ebo;
-
     Game *game;
 
     Sprite(const char *path, enum TextureType type);

06-monogame/.gitignore

@@ -0,0 +1,43 @@
+*.swp
+*.*~
+project.lock.json
+.DS_Store
+*.pyc
+nupkg/
+
+# Visual Studio Code
+.vscode/
+
+# Rider
+.idea/
+
+# Visual Studio
+.vs/
+
+# Fleet
+.fleet/
+
+# Code Rush
+.cr/
+
+# User-specific files
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+build/
+bld/
+[Bb]in/
+[Oo]bj/
+[Oo]ut/
+msbuild.log
+msbuild.err
+msbuild.wrn

06-monogame/Introduction/.config/dotnet-tools.json

@@ -0,0 +1,36 @@
+{
+  "version": 1,
+  "isRoot": true,
+  "tools": {
+    "dotnet-mgcb": {
+      "version": "3.8.1.303",
+      "commands": [
+        "mgcb"
+      ]
+    },
+    "dotnet-mgcb-editor": {
+      "version": "3.8.1.303",
+      "commands": [
+        "mgcb-editor"
+      ]
+    },
+    "dotnet-mgcb-editor-linux": {
+      "version": "3.8.1.303",
+      "commands": [
+        "mgcb-editor-linux"
+      ]
+    },
+    "dotnet-mgcb-editor-windows": {
+      "version": "3.8.1.303",
+      "commands": [
+        "mgcb-editor-windows"
+      ]
+    },
+    "dotnet-mgcb-editor-mac": {
+      "version": "3.8.1.303",
+      "commands": [
+        "mgcb-editor-mac"
+      ]
+    }
+  }
+}

06-monogame/Introduction/Character.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Linq;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Content;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+using Vector2 = Microsoft.Xna.Framework.Vector2;
+
+namespace Introduction;
+
+public class Character
+{
+    public Texture2D texture;
+    public Texture2D noise; 
+    public Vector2 pos;
+    public Vector2 scale;
+    public Vector2 rot;
+    public float angles;
+    public float speed;
+
+    private bool glitchEnabled = false;
+    private Effect glitch;
+    private float time;
+
+    public void Initialize()
+    {
+        speed = 300.0f;
+        pos = Vector2.Zero;
+        scale = new Vector2(1f);
+        rot = Vector2.UnitX;
+        angles = 0.0f;
+    }
+
+    public void LoadContent(ContentManager content)
+    {
+        texture = content.Load<Texture2D>("player_texture");
+        noise = content.Load<Texture2D>("noise");
+        glitch = content.Load<Effect>("glitch");
+ 
+        if (glitch.Parameters["NoiseTexture"] is not null)
+            glitch.Parameters["NoiseTexture"].SetValue(texture);
+        
+        if (glitch.Parameters["textureSize"] is not null)
+            glitch.Parameters["textureSize"].SetValue(new Vector2(texture.Width, texture.Height));
+    }
+
+    public void Update(GameTime gameTime)
+    {
+        var kstate = Keyboard.GetState();
+        if (kstate.IsKeyDown(Keys.W))
+        {
+            pos.Y -= speed * (float)gameTime.ElapsedGameTime.TotalSeconds;
+        }
+
+        if (kstate.IsKeyDown(Keys.S))
+        {
+            pos.Y += speed * (float)gameTime.ElapsedGameTime.TotalSeconds;
+        }
+
+        if (kstate.IsKeyDown(Keys.A))
+        {
+            pos.X -= speed * (float)gameTime.ElapsedGameTime.TotalSeconds;
+        }
+
+        if (kstate.IsKeyDown(Keys.D))
+        {
+            pos.X += speed * (float)gameTime.ElapsedGameTime.TotalSeconds;
+        }
+
+        if (kstate.IsKeyDown(Keys.K))
+        {
+            glitchEnabled = !glitchEnabled;
+        }
+
+        var mstate = Mouse.GetState();
+        Vector2 mousePosition = new Vector2(mstate.X, mstate.Y);
+        Vector2 distancePosition = mousePosition - pos;
+
+        angles = (float) (Math.Atan2(distancePosition.Y, distancePosition.X));
+
+        time += (float) gameTime.ElapsedGameTime.TotalSeconds;
+        
+        if (glitch.Parameters["Time"] is not null) 
+            glitch.Parameters["Time"].SetValue(time);
+    }
+
+    public void Draw(GameTime gameTime, SpriteBatch spriteBatch)
+    {
+        spriteBatch.Begin(SpriteSortMode.Immediate, BlendState.AlphaBlend);
+        Vector2 origin = new Vector2(texture.Width / 2, texture.Height / 2);
+
+        if (glitchEnabled)
+            glitch.CurrentTechnique.Passes[0].Apply();
+        else
+            time = 0; 
+        
+        spriteBatch.Draw(texture, pos, null, Color.White, angles, origin, scale, SpriteEffects.None, 0.0f);
+        spriteBatch.End();
+    } 
+}

06-monogame/Introduction/Content/Content.mgcb

@@ -0,0 +1,45 @@
+
+#----------------------------- Global Properties ----------------------------#
+
+/outputDir:bin/$(Platform)
+/intermediateDir:obj/$(Platform)
+/platform:DesktopGL
+/config:
+/profile:Reach
+/compress:False
+
+#-------------------------------- References --------------------------------#
+
+
+#---------------------------------- Content ---------------------------------#
+
+#begin glitch.fx
+/importer:EffectImporter
+/processor:EffectProcessor
+/processorParam:DebugMode=Auto
+/build:glitch.fx
+
+#begin noise.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:noise.png
+
+#begin player_texture.png
+/importer:TextureImporter
+/processor:TextureProcessor
+/processorParam:ColorKeyColor=255,0,255,255
+/processorParam:ColorKeyEnabled=True
+/processorParam:GenerateMipmaps=False
+/processorParam:PremultiplyAlpha=True
+/processorParam:ResizeToPowerOfTwo=False
+/processorParam:MakeSquare=False
+/processorParam:TextureFormat=Color
+/build:player_texture.png
+

06-monogame/Introduction/Content/glitch.fx

@@ -0,0 +1,47 @@
+#if OPENGL
+	#define SV_POSITION POSITION
+	#define VS_SHADERMODEL vs_3_0
+	#define PS_SHADERMODEL ps_3_0
+#else
+	#define VS_SHADERMODEL vs_4_0_level_9_1
+	#define PS_SHADERMODEL ps_4_0_level_9_1
+#endif
+
+matrix WorldViewProjection;
+
+sampler s0 : register (s0);
+float Time;
+float2 textureSize; 
+
+Texture2D NoiseTexture;
+sampler2D NoiseSampler = sampler_state 
+{ 
+	Texture = <NoiseTexture>; 
+};
+
+float4 MainPS(float2 coords: TEXCOORD0) : COLOR0
+{
+    float2 up_limit = float2(0.0, 0.0) + float2(Time, Time);
+    float2 down_limit = textureSize - float2(Time, Time);
+    
+    float4 output_col; 
+    if (coords.x < up_limit.x || coords.y < up_limit.y) {
+        output_col = float4(0.0, 0.0, 0.0, 0.0);
+        return output_col;
+    }
+    
+    if (coords.x > down_limit.x || coords.y > down_limit.y) {
+        output_col = float4(0.0, 0.0, 0.0, 0.0);
+        return output_col;
+    }
+    
+    return tex2D(s0, coords);
+}
+
+technique BasicColorDrawing
+{
+	pass P0
+	{
+		PixelShader = compile PS_SHADERMODEL MainPS();
+	}
+};

06-monogame/Introduction/Game1.cs

@@ -0,0 +1,53 @@
+using System.Data;
+using Microsoft.Xna.Framework;
+using Microsoft.Xna.Framework.Graphics;
+using Microsoft.Xna.Framework.Input;
+
+namespace Introduction;
+
+public class Game1 : Game
+{
+    private GraphicsDeviceManager _graphics;
+    private SpriteBatch _spriteBatch;
+    private Character player;
+
+    public Game1()
+    {
+        _graphics = new GraphicsDeviceManager(this);
+        Content.RootDirectory = "Content";
+        IsMouseVisible = true;
+        player = new Character();
+    }
+
+    protected override void Initialize()
+    {
+        player.Initialize();
+
+        base.Initialize();
+    }
+
+    protected override void LoadContent()
+    {
+        _spriteBatch = new SpriteBatch(GraphicsDevice);
+        player.LoadContent(Content);
+    }
+
+    protected override void Update(GameTime gameTime)
+    {
+        if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
+            Exit();
+        
+        player.Update(gameTime);
+
+        base.Update(gameTime);
+    }
+
+    protected override void Draw(GameTime gameTime)
+    {
+        GraphicsDevice.Clear(Color.CornflowerBlue);
+        
+        player.Draw(gameTime, _spriteBatch);
+
+        base.Draw(gameTime);
+    }
+}

06-monogame/Introduction/Introduction.csproj

@@ -0,0 +1,29 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>WinExe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <RollForward>Major</RollForward>
+    <PublishReadyToRun>false</PublishReadyToRun>
+    <TieredCompilation>false</TieredCompilation>
+  </PropertyGroup>
+  <PropertyGroup>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <ApplicationIcon>Icon.ico</ApplicationIcon>
+  </PropertyGroup>
+  <ItemGroup>
+    <None Remove="Icon.ico" />
+    <None Remove="Icon.bmp" />
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="Icon.ico" />
+    <EmbeddedResource Include="Icon.bmp" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.1.303" />
+    <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.1.303" />
+  </ItemGroup>
+  <Target Name="RestoreDotnetTools" BeforeTargets="Restore">
+    <Message Text="Restoring dotnet tools" Importance="High" />
+    <Exec Command="dotnet tool restore" />
+  </Target>
+</Project>

06-monogame/Introduction/Program.cs

@@ -0,0 +1,3 @@
+
+using var game = new Introduction.Game1();
+game.Run();

06-monogame/Introduction/app.manifest

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
+  <assemblyIdentity version="1.0.0.0" name="Introduction"/>
+  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
+    <security>
+      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
+        <requestedExecutionLevel  level="asInvoker" uiAccess="false" />
+      </requestedPrivileges>
+    </security>
+  </trustInfo>
+
+  <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
+    <application>
+      <!-- A list of the Windows versions that this application has been tested on and is
+           is designed to work with. Uncomment the appropriate elements and Windows will 
+           automatically selected the most compatible environment. -->
+
+      <!-- Windows Vista -->
+      <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}" />
+
+      <!-- Windows 7 -->
+      <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}" />
+
+      <!-- Windows 8 -->
+      <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}" />
+
+      <!-- Windows 8.1 -->
+      <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}" />
+
+      <!-- Windows 10 -->
+      <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
+
+    </application>
+  </compatibility>
+
+  <application xmlns="urn:schemas-microsoft-com:asm.v3">
+    <windowsSettings>
+      <dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true/pm</dpiAware>
+      <dpiAwareness xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">permonitorv2,permonitor</dpiAwareness>
+    </windowsSettings>
+  </application>
+
+</assembly>

README.md

@@ -1,5 +1,7 @@
 <p align="center">
-    <img src=".imgs/icon.png" width="200"/>
+    <img src=".imgs/sdl.png" width="200"/>
+    <img src=".imgs/opengl.png" width="200"/>
+    <img src=".imgs/monogame.png" width="200"/>
 </p>
 
 # Graphics