BIG UPDATE: New models functions for animations!

Multiple functions added and some reviewed to adapt to the new multi-mesh, multi-material and animated models.

examples/models/models_animation.c

@@ -0,0 +1,101 @@
+/*******************************************************************************************
+*
+*   raylib [models] example - Load 3d model with animations and play them
+*
+*   This example has been created using raylib 2.5 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2019 Ramon Santamaria (@raysan5) and @culacant
+*
+********************************************************************************************/
+
+#include "raylib.h"
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - model animation");
+
+    // Define the camera to look into our 3d world
+    Camera camera = { 0 };
+    camera.position = (Vector3){ 10.0f, 10.0f, 10.0f }; // Camera position
+    camera.target = (Vector3){ 0.0f, 0.0f, 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.type = CAMERA_PERSPECTIVE;                   // Camera mode type
+
+
+    Model model = LoadModel("resources/guy/guy.iqm");               // Load the animated model mesh and basic data
+    Texture2D texture = LoadTexture("resources/guy/guytex.png");    // Load model texture and set material
+    SetMaterialTexture(&model.materials[0], MAP_DIFFUSE, texture);  // Set model material map texture
+    
+    Vector3 position = { 0.0f, 0.0f, 0.0f };            // Set model position
+
+    // Load animation data
+    int animsCount = 0;
+    ModelAnimation *anims = LoadModelAnimations("resources/guy/guyanim.iqm", &animsCount);
+    int animFrameCounter = 0;
+
+    SetCameraMode(camera, CAMERA_FREE); // Set free camera mode
+
+    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);
+
+        // Play animation when spacebar is held down
+        if (IsKeyDown(KEY_SPACE))
+        {
+            animFrameCounter++;
+            UpdateModelAnimation(model, anims[0], animFrameCounter);
+            if (animFrameCounter >= anims[0].frameCount) animFrameCounter = 0;
+        }
+        //----------------------------------------------------------------------------------
+
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            BeginMode3D(camera);
+
+                DrawModelEx(model, position, (Vector3){ 1.0f, 0.0f, 0.0f }, -90.0f, (Vector3){ 1.0f, 1.0f, 1.0f }, WHITE);
+
+                for (int i = 0; i < model.boneCount; i++)
+                {
+                    DrawCube(anims[0].framePoses[animFrameCounter][i].translation, 0.2f, 0.2f, 0.2f, RED);
+                }
+
+                DrawGrid(10, 1.0f);         // Draw a grid
+
+            EndMode3D();
+
+            DrawText("PRESS SPACE to PLAY MODEL ANIMATION", 10, 10, 20, MAROON);
+            DrawText("(c) Guy IQM 3D model by @culacant", screenWidth - 200, screenHeight - 20, 10, GRAY);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    // Unload model animations data
+    for (int i = 0; i < animsCount; i++) UnloadModelAnimation(anims[i]);
+    
+    UnloadModel(model);         // Unload model
+
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}