#include <raylib.h>
#include <math.h>

int main(void) {
	// 初始化
	const int screenWidth = 640;
	const int screenHeight = 480;

	//启用反锯齿
	SetConfigFlags(FLAG_MSAA_4X_HINT);

	//初始化窗口
	InitWindow(screenWidth, screenHeight, "Sample");

	// 初始化摄像机
	Camera3D camera = { 0 };
	camera.position = (Vector3) {
		40.0f, 20.0f, 0.0f
	}; //相机所在位置{x,y,z}
	camera.target = (Vector3) {
		0.0f, 0.0f, 0.0f
	}; //相机朝向位置{x,y,z}
	camera.up = (Vector3) {
		0.0f, 1.0f, 0.0f
	}; //相机正上方朝向矢量
	camera.fovy = 70.0f; //相机视野宽度
	camera.projection = CAMERA_PERSPECTIVE; //采用透视投影

	//设置动画帧率（刷新率，fps）为30帧/秒
	SetTargetFPS(30);
	//--------------------------------------------------------------------------------------
	int angle = 0; //多边形旋转角度

	// 主游戏循环
	while (!WindowShouldClose()) {  //关闭窗口或者按ESC键时返回true

		double time = GetTime();
		// 每次循环更新一帧
		// 摄像机围绕y轴转动
		double cameraTime = time * 0.3;
		camera.position.x = (float)cos(cameraTime) * 40.0f;
		camera.position.z = (float)sin(cameraTime) * 40.0f;

		BeginDrawing();

		ClearBackground(WHITE);
		//以摄像机视角绘制3d内容
		BeginMode3D(camera);
		DrawCube(Vector3{0, 0, 0}, 10, 10, 10, VIOLET);
		DrawCubeWires(Vector3{0, 0, 0}, 10, 10, 10, BLACK);
		EndMode3D();
		EndDrawing();
	}

	//关闭窗口
	CloseWindow();

	return 0;
}