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/*******************************************************************************************
*
* raylib [models] example - loading gltf with animations
*
* LIMITATIONS:
* - Only supports 1 armature per file, and skips loading it if there are multiple armatures
* - Only supports linear interpolation (default method in Blender when checked
* "Always Sample Animations" when exporting a GLTF file)
* - Only supports translation/rotation/scale animation channel.path,
* weights not considered (i.e. morph targets)
*
* Example originally created with raylib 3.7, last time updated with raylib 4.2
*
* 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) 2020-2024 Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#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 - loading gltf animations");
// Define the camera to look into our 3d world
Camera camera = { 0 };
camera.position = (Vector3){ 6.0f, 6.0f, 6.0f }; // Camera position
camera.target = (Vector3){ 0.0f, 2.0f, 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.projection = CAMERA_PERSPECTIVE; // Camera projection type
// Load gltf model
Model model = LoadModel("resources/models/gltf/robot.glb");
Vector3 position = { 0.0f, 0.0f, 0.0f }; // Set model position
// Load gltf model animations
int animsCount = 0;
unsigned int animIndex = 0;
unsigned int animCurrentFrame = 0;
ModelAnimation *modelAnimations = LoadModelAnimations("resources/models/gltf/robot.glb", &animsCount);
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_ORBITAL);
// Select current animation
if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) animIndex = (animIndex + 1)%animsCount;
else if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) animIndex = (animIndex + animsCount - 1)%animsCount;
// Update model animation
ModelAnimation anim = modelAnimations[animIndex];
animCurrentFrame = (animCurrentFrame + 1)%anim.frameCount;
UpdateModelAnimation(model, anim, animCurrentFrame);
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
BeginMode3D(camera);
DrawModel(model, position, 1.0f, WHITE); // Draw animated model
DrawGrid(10, 1.0f);
EndMode3D();
DrawText("Use the LEFT/RIGHT mouse buttons to switch animation", 10, 10, 20, GRAY);
DrawText(TextFormat("Animation: %s", anim.name), 10, GetScreenHeight() - 20, 10, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadModel(model); // Unload model and meshes/material
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
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