This page has been translated automatically.
视频教程
界面
要领
高级
实用建议
专业(SIM)
UnigineEditor
界面概述
资源工作流程
版本控制
设置和首选项
项目开发
调整节点参数
Setting Up Materials
设置属性
照明
Sandworm
使用编辑器工具执行特定任务
如何擴展編輯器功能
嵌入式节点类型
Nodes
Objects
Effects
Decals
光源
Geodetics
World Nodes
Sound Objects
Pathfinding Objects
Players
编程
基本原理
搭建开发环境
使用范例
C++
C#
UnigineScript
UUSL (Unified UNIGINE Shader Language)
Plugins
File Formats
材质和着色器
Rebuilding the Engine Tools
GUI
双精度坐标
应用程序接口
Animations-Related Classes
Containers
Common Functionality
Controls-Related Classes
Filesystem Functionality
GUI-Related Classes
Math Functionality
Node-Related Classes
Objects-Related Classes
Networking Functionality
Pathfinding-Related Classes
Physics-Related Classes
Plugins-Related Classes
IG Plugin
CIGIConnector Plugin
Rendering-Related Classes
VR-Related Classes
创建内容
内容优化
材质
Material Nodes Library
Miscellaneous
Input
Math
Matrix
Textures
Art Samples
Tutorials

Unigine::GameIntersection Class

Header: #include <UnigineGame.h>

Stores the result of the Game::getIntersection() function: the point where the intersection with an obstacle has been occurred.

Usage Example

The following example shows how you can get the intersection point (vec3) of the cylinder between two points with an obstacle. In this example we specify a cylinder from the point of the camera (vec3 p0) to the point of the mouse pointer (vec3 p1) with the specified radius. The executing sequence is the following:

  1. Define and initialize two points (p0 and p1) by using the Player::getDirectionFromScreen().
  2. Create an instance of the GameIntersection class to get the intersection point coordinates.
  3. Check, if there is an intersection with an obstacle. The Game::getIntersection() function returns an intersected obstacle when the obstacle appears in the area of the cylinder.
  4. After that GameIntersection instance gets the point of the nearest intersection point and you can get it by using the getPoint() function.
Source code (C++)
// initialize points of the mouse direction
Vec3 p0, p1;

// get the current player (camera)
PlayerPtr player = Game::getPlayer();
if (player.get() == NULL)
	return 0;

// get width and height of the current application window
ivec2 main_size = ivec2_one;
EngineWindowPtr main_window = WindowManager::getMainWindow();
if (!main_window)
	Engine::get()->quit();

main_size = main_window->getSize();

// get the current X and Y coordinates of the mouse pointer
int mouse_x = Input::getMousePosition().x - main_window->getPosition().x;
int mouse_y = Input::getMousePosition().y - main_window->getPosition().y;

// get the mouse direction from the player's position (p0) to the mouse cursor pointer (p1)
player->getDirectionFromScreen(p0, p1, 0, 0, mouse_x, mouse_y, main_size.x, main_size.y);

// create an instance of the GameIntersection class
GameIntersectionPtr intersection = GameIntersection::create();

// try to get the intersection with an obstacle
// cylinder has radius 1.5f, intersection mask equals to 1
ObstaclePtr obstacle = Game::getIntersection(p0, p1, 1.5f, 1, intersection);

// check, if the intersection of mouse direction with any obstacle was occurred;
if (obstacle)
{
	// show the coordinates of the intersection in console 
	Log::message("The intersection with the obstacle was here: (%f %f %f)\n", intersection->getPoint().x, intersection->getPoint().y, intersection->getPoint().z);
}
/* ... */

GameIntersection Class

Members


static GameIntersectionPtr create ( ) #

The GameIntersection constructor.

void setPoint ( const Math::Vec3 & point ) #

Sets new coordinates of the intersection point.

Arguments

  • const Math::Vec3 & point - Coordinates of the intersection point.

Math::Vec3 getPoint ( ) #

Returns coordinates of the intersection point.

Return value

Coordinates of the intersection point.
Last update: 2023-02-28
Build: ()