convert submodules to normal folders for now

raylib/examples/models/models_loading_m3d.c

@@ -0,0 +1,174 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - Load models M3D
+*
+*   Example originally created with raylib 4.5, last time updated with raylib 4.5
+*
+*   Example contributed by bzt (@bztsrc) and reviewed by Ramon Santamaria (@raysan5)
+*
+*   NOTES:
+*     - Model3D (M3D) fileformat specs: https://gitlab.com/bztsrc/model3d
+*     - Bender M3D exported: https://gitlab.com/bztsrc/model3d/-/tree/master/blender
+*
+*   Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
+*   BSD-like license that allows static linking with closed source software
+*
+*   Copyright (c) 2022-2024 bzt (@bztsrc)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+//------------------------------------------------------------------------------------
+// Program main entry point
+//------------------------------------------------------------------------------------
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - M3D model loading");
+
+    // Define the camera to look into our 3d world
+    Camera camera = { 0 };
+    camera.position = (Vector3){ 1.5f, 1.5f, 1.5f };    // Camera position
+    camera.target = (Vector3){ 0.0f, 0.4f, 0.0f };      // Camera looking at point
+    camera.up = (Vector3){ 0.0f, 1.0f, 0.0f };          // Camera up vector (rotation towards target)
+    camera.fovy = 45.0f;                                // Camera field-of-view Y
+    camera.projection = CAMERA_PERSPECTIVE;             // Camera projection type
+
+    Vector3 position = { 0.0f, 0.0f, 0.0f };            // Set model position
+
+    char modelFileName[128] = "resources/models/m3d/cesium_man.m3d";
+    bool drawMesh = 1;
+    bool drawSkeleton = 1;
+    bool animPlaying = false;   // Store anim state, what to draw
+
+    // Load model
+    Model model = LoadModel(modelFileName); // Load the bind-pose model mesh and basic data
+
+    // Load animations
+    int animsCount = 0;
+    int animFrameCounter = 0, animId = 0;
+    ModelAnimation *anims = LoadModelAnimations(modelFileName, &animsCount); // Load skeletal animation data
+
+    DisableCursor();                    // Limit cursor to relative movement inside the window
+
+    SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())        // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateCamera(&camera, CAMERA_FIRST_PERSON);
+
+        if (animsCount)
+        {
+            // Play animation when spacebar is held down (or step one frame with N)
+            if (IsKeyDown(KEY_SPACE) || IsKeyPressed(KEY_N))
+            {
+                animFrameCounter++;
+
+                if (animFrameCounter >= anims[animId].frameCount) animFrameCounter = 0;
+
+                UpdateModelAnimation(model, anims[animId], animFrameCounter);
+                animPlaying = true;
+            }
+
+            // Select animation by pressing C
+            if (IsKeyPressed(KEY_C))
+            {
+                animFrameCounter = 0;
+                animId++;
+
+                if (animId >= (int)animsCount) animId = 0;
+                UpdateModelAnimation(model, anims[animId], 0);
+                animPlaying = true;
+            }
+        }
+
+        // Toggle skeleton drawing
+        if (IsKeyPressed(KEY_B)) drawSkeleton ^= 1;
+
+        // Toggle mesh drawing
+        if (IsKeyPressed(KEY_M)) drawMesh ^= 1;
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+
+                // Draw 3d model with texture
+                if (drawMesh) DrawModel(model, position, 1.0f, WHITE);
+
+                // Draw the animated skeleton
+                if (drawSkeleton)
+                {
+                    // Loop to (boneCount - 1) because the last one is a special "no bone" bone,
+                    // needed to workaround buggy models
+                    // without a -1, we would always draw a cube at the origin
+                    for (int i = 0; i < model.boneCount - 1; i++)
+                    {
+                        // By default the model is loaded in bind-pose by LoadModel().
+                        // But if UpdateModelAnimation() has been called at least once
+                        // then the model is already in animation pose, so we need the animated skeleton
+                        if (!animPlaying || !animsCount)
+                        {
+                            // Display the bind-pose skeleton
+                            DrawCube(model.bindPose[i].translation, 0.04f, 0.04f, 0.04f, RED);
+
+                            if (model.bones[i].parent >= 0)
+                            {
+                                DrawLine3D(model.bindPose[i].translation,
+                                    model.bindPose[model.bones[i].parent].translation, RED);
+                            }
+                        }
+                        else
+                        {
+                            // Display the frame-pose skeleton
+                            DrawCube(anims[animId].framePoses[animFrameCounter][i].translation, 0.05f, 0.05f, 0.05f, RED);
+
+                            if (anims[animId].bones[i].parent >= 0)
+                            {
+                                DrawLine3D(anims[animId].framePoses[animFrameCounter][i].translation,
+                                    anims[animId].framePoses[animFrameCounter][anims[animId].bones[i].parent].translation, RED);
+                            }
+                        }
+                    }
+                }
+
+                DrawGrid(10, 1.0f);         // Draw a grid
+
+            EndMode3D();
+
+            DrawText("PRESS SPACE to PLAY MODEL ANIMATION", 10, GetScreenHeight() - 80, 10, MAROON);
+            DrawText("PRESS N to STEP ONE ANIMATION FRAME", 10, GetScreenHeight() - 60, 10, DARKGRAY);
+            DrawText("PRESS C to CYCLE THROUGH ANIMATIONS", 10, GetScreenHeight() - 40, 10, DARKGRAY);
+            DrawText("PRESS M to toggle MESH, B to toggle SKELETON DRAWING", 10, GetScreenHeight() - 20, 10, DARKGRAY);
+            DrawText("(c) CesiumMan model by KhronosGroup", GetScreenWidth() - 210, GetScreenHeight() - 20, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+
+    // Unload model animations data
+    UnloadModelAnimations(anims, animsCount);
+
+    UnloadModel(model);         // Unload model
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}