TileMap Component

Engine/CMakeLists.txt

@@ -22,6 +22,7 @@ set(SRC_FILES
     "Src/Imp/CPP/Nodes/CameraNode.cpp"
     "Src/Imp/CPP/Nodes/SpriteNode.cpp"
     "Src/Imp/CPP/Nodes/TextureNode.cpp"
+    "Src/Imp/CPP/Nodes/TileMapNode.cpp"
 
     "Src/Imp/CPP/Components/CameraComponent.cpp"
     "Src/Imp/CPP/Components/PhysicsComponent.cpp"

Engine/Src/Imp/CPP/Components/CameraComponent.cpp

@@ -15,6 +15,7 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 #include <IAEngine/Components/CameraComponent.hpp>
+#include <IAEngine/Nodes/Node2D.hpp>
 
 #include <Renderer/Renderer.hpp>
 
@@ -45,6 +46,8 @@ namespace ia::iae
 
     VOID CameraComponent::Update()
     {
+        const auto pos = m_node->GetPosition();
+        m_viewMatrix = glm::lookAtLH(glm::vec3{pos, -2.0f}, {pos, 0.0f}, {0.0f, 1.0f, 0.0f});
     }
 
     VOID CameraComponent::FixedUpdate()

Engine/Src/Imp/CPP/Components/TileMapComponent.cpp

@@ -0,0 +1,74 @@
+// IAEngine: 2D Game Engine by IA
+// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include <IAEngine/Components/TileMapComponent.hpp>
+#include <IAEngine/Engine.hpp>
+
+namespace ia::iae
+{
+    STATIC Vector<Handle> TileTextures;
+
+    TileMapComponent::TileMapComponent(IN Node2D *node) : TextureComponent(node)
+    {
+    }
+
+    VOID TileMapComponent::Draw()
+    {
+        TextureComponent::Draw();
+    }
+
+    VOID TileMapComponent::DebugDraw()
+    {
+        TextureComponent::DebugDraw();
+    }
+
+    VOID TileMapComponent::Update()
+    {
+        TextureComponent::Update();
+    }
+
+    VOID TileMapComponent::FixedUpdate()
+    {
+        TextureComponent::FixedUpdate();
+    }
+
+    VOID TileMapComponent::BeginGridSetup(IN INT32 tileWidth, IN INT32 tileHeight, IN INT32 tileCountX,
+                                          IN INT32 tileCountY)
+    {
+        m_tileWidth = tileWidth;
+        m_tileHeight = tileHeight;
+        m_tileCountX = tileCountX;
+        m_tileCountY = tileCountY;
+        TileTextures.resize(m_tileCountX * m_tileCountY);
+    }
+
+    VOID TileMapComponent::SetupGridTile(IN INT32 index, IN Handle texture)
+    {
+        TileTextures[index] = texture;
+    }
+
+    VOID TileMapComponent::SetupGridTile(IN INT32 x, IN INT32 y, IN Handle texture)
+    {
+        TileTextures[x + y * m_tileCountX] = texture;
+    }
+
+    VOID TileMapComponent::EndGridSetup()
+    {
+        m_mapTexture = Engine::CombineImages(TileTextures, m_tileWidth, m_tileHeight, m_tileCountX, m_tileCountY);
+        SetTexture(m_mapTexture);
+        TileTextures.reset();
+    }
+} // namespace ia::iae

Engine/Src/Imp/CPP/InputManager.cpp

@@ -63,8 +63,8 @@ namespace ia::iae
     Vec2 InputManager::GetAxis()
     {
         return Vec2{
-            IsKeyDown(s_axisInputs[1]) + IsKeyDown(s_axisInputs[0]) * -1,
+            IsKeyDown(s_axisInputs[3]) + IsKeyDown(s_axisInputs[2]) * -1,
-            IsKeyDown(s_axisInputs[3]) + IsKeyDown(s_axisInputs[2]) * -1
+            IsKeyDown(s_axisInputs[1]) + IsKeyDown(s_axisInputs[0]) * -1
         };
     }
 

Engine/Src/Imp/CPP/Nodes/TileMapNode.cpp

@@ -0,0 +1,25 @@
+// IAEngine: 2D Game Engine by IA
+// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#include <IAEngine/Engine.hpp>
+#include <IAEngine/Nodes/TileMapNode.hpp>
+
+namespace ia::iae
+{
+    TileMapNode::TileMapNode(IN CONST String &name) : Node2D(name), m_tilemapComponent(AddComponent<TileMapComponent>())
+    {
+    }
+} // namespace ia::iae

Engine/Src/Imp/CPP/Renderer/Renderer.cpp

@@ -154,7 +154,7 @@ namespace ia::iae
             s_state.ActiveCamera ? s_state.ActiveCamera->GetProjectionMatrix() : &IdentityMatrix, sizeof(Mat4));
         SDL_PushGPUVertexUniformData(
             s_state.ActiveCommandBuffer, 1,
-            (s_state.ActiveCamera && !s_state.CameraRelative) ? s_state.ActiveCamera->GetViewMatrix() : &IdentityMatrix,
+            (s_state.ActiveCamera && s_state.CameraRelative) ? s_state.ActiveCamera->GetViewMatrix() : &IdentityMatrix,
             sizeof(Mat4));
     }
 

Engine/Src/Imp/CPP/ResourceManager.cpp

@@ -18,8 +18,8 @@
 #include <ResourceManager.hpp>
 
 #include <AudioManager.hpp>
-#include <Renderer/Renderer.hpp>
 #include <Renderer/GPUResourceManager.hpp>
+#include <Renderer/Renderer.hpp>
 
 #define STB_IMAGE_IMPLEMENTATION
 #define STB_IMAGE_RESIZE_IMPLEMENTATION
@@ -28,7 +28,7 @@
 
 namespace ia::iae
 {
-    Vector<SDL_GPUTexture*> ResourceManager::s_imageHandles;
+    Vector<SDL_GPUTexture *> ResourceManager::s_imageHandles;
     Map<String, Handle> ResourceManager::s_images;
     Map<String, Handle> ResourceManager::s_sounds;
     Map<Handle, UINT64> ResourceManager::s_imageExtents;
@@ -37,8 +37,8 @@ namespace ia::iae
     VOID ResourceManager::Initialize()
     {
         { // Set Texture Handle 0 to a pure white image
-            const auto data = new UINT8[100*100*4];
+            const auto data = new UINT8[100 * 100 * 4];
-            ia_memset(data, 0xFF, 100* 100* 4);
+            ia_memset(data, 0xFF, 100 * 100 * 4);
             CreateImage(Engine::GetUniqueResourceName(), data, 100, 100);
             delete[] data;
         }
@@ -63,8 +63,8 @@ namespace ia::iae
 
     Handle ResourceManager::CreateImage(IN CONST String &name, IN PCUINT8 rgbaData, IN INT32 width, IN INT32 height)
     {
-        const auto texture = GPUResourceManager::CreateTexture(SDL_GPU_TEXTUREUSAGE_SAMPLER, width, height,
+        const auto texture = GPUResourceManager::CreateTexture(SDL_GPU_TEXTUREUSAGE_SAMPLER, width, height, rgbaData,
-                                                                       rgbaData, SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM);
+                                                               SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM);
         s_imageHandles.pushBack(texture);
         Handle handle = s_imageHandles.size() - 1;
         s_images[name] = handle;
@@ -138,7 +138,7 @@ namespace ia::iae
             stbir_resize_uint8_linear(pixelData.data(), currentExtent.x, currentExtent.y, currentExtent.x * 4, nullptr,
                                       newWidth, newHeight, newWidth * 4, stbir_pixel_layout::STBIR_RGBA);
         const auto texture = GPUResourceManager::CreateTexture(SDL_GPU_TEXTUREUSAGE_SAMPLER, newWidth, newHeight,
-                                                                       newPixelData, SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM);
+                                                               newPixelData, SDL_GPU_TEXTUREFORMAT_R8G8B8A8_UNORM);
         s_imageExtents[image] = (((UINT64) newWidth) << 32) | newHeight;
         GPUResourceManager::DestroyTexture(s_imageHandles[image]);
         s_imageHandles[image] = texture;
@@ -149,16 +149,24 @@ namespace ia::iae
     Handle ResourceManager::CombineImages(IN CONST Vector<Handle> &images, IN INT32 unitWidth, IN INT32 unitHeight,
                                           IN INT32 unitCountX, IN INT32 unitCountY)
     {
-        Vector<SDL_GPUTexture*> textures;
+        const auto w = unitWidth * unitCountX;
-        for(const auto& t: images)
+        const auto h = unitHeight * unitCountY;
+        Vector<SDL_GPUTexture *> textures;
+        for (const auto &t : images)
             textures.pushBack(s_imageHandles[t]);
-        return (Handle) GPUResourceManager::CombineTextures(textures.data(), unitWidth, unitHeight,
+        const auto texture =
-                                                            unitCountX, unitCountY);
+            GPUResourceManager::CombineTextures(textures.data(), unitWidth, unitHeight, unitCountX, unitCountY);
+        s_imageHandles.pushBack(texture);
+        Handle handle = s_imageHandles.size() - 1;
+        s_images[Engine::GetUniqueResourceName()] = handle;
+        s_imageExtents[handle] = (((UINT64) w) << 32) | h;
+        s_nonScaledImageExtents[handle] = s_imageExtents[handle];
+        return handle;
     }
 
     VOID ResourceManager::RescaleAllImages(IN FLOAT32 factorX, IN FLOAT32 factorY)
     {
-        for(auto& t: s_images)
+        for (auto &t : s_images)
         {
             const auto p = s_nonScaledImageExtents[t->Value];
             t->Value = ResizeImage(t->Value, ((INT32) (p >> 32)) * factorX, ((INT32) p) * factorY);

Engine/Src/Inc/IAEngine/Components/TileMapComponent.hpp

@@ -0,0 +1,48 @@
+// IAEngine: 2D Game Engine by IA
+// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <IAEngine/Components/TextureComponent.hpp>
+
+namespace ia::iae
+{
+    class TileMapComponent : public TextureComponent
+    {
+      public:
+        TileMapComponent(IN Node2D *node);
+
+      public:
+        VIRTUAL VOID Draw();
+        VIRTUAL VOID DebugDraw();
+
+        VIRTUAL VOID Update();
+        VIRTUAL VOID FixedUpdate();
+
+      public:
+        VOID BeginGridSetup(IN INT32 tileWidth, IN INT32 tileHeight, IN INT32 tileCountX, IN INT32 tileCountY);
+        VOID SetupGridTile(IN INT32 index, IN Handle texture);
+        VOID SetupGridTile(IN INT32 x, IN INT32 y, IN Handle texture);
+        VOID EndGridSetup();
+
+      private:
+        INT32 m_tileWidth{};
+        INT32 m_tileHeight{};
+        INT32 m_tileCountX{};
+        INT32 m_tileCountY{};
+        Handle m_mapTexture{INVALID_HANDLE};
+    };
+} // namespace ia::iae

Engine/Src/Inc/IAEngine/Engine.hpp

@@ -26,6 +26,7 @@
 
 #include <IAEngine/UI.hpp>
 #include <IAEngine/Scene.hpp>
+#include <IAEngine/Utils.hpp>
 
 namespace ia::iae
 {

Engine/Src/Inc/IAEngine/Nodes/Node2D.hpp

@@ -58,6 +58,11 @@ namespace ia::iae
             return result;
         }
 
+        VOID AddChild(IN RefPtr<Node2D> node)
+        {
+            m_children.pushBack(node);
+        }
+
       public:
         VOID Translate(IN Vec2 v)
         {

Engine/Src/Inc/IAEngine/Nodes/TileMapNode.hpp

@@ -0,0 +1,38 @@
+// IAEngine: 2D Game Engine by IA
+// Copyright (C) 2025 IASoft (PVT) LTD (oss@iasoft.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+#pragma once
+
+#include <IAEngine/Components/TileMapComponent.hpp>
+#include <IAEngine/Nodes/Node2D.hpp>
+
+namespace ia::iae
+{
+    class TileMapNode : public Node2D
+    {
+      public:
+        TileMapNode(IN CONST String &name);
+
+      public:
+        TileMapComponent *GetTileMapComponent()
+        {
+            return m_tilemapComponent;
+        }
+
+      protected:
+        TileMapComponent *CONST m_tilemapComponent{};
+    };
+} // namespace ia::iae