You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
107 lines
4.2 KiB
107 lines
4.2 KiB
/*******************************************************************************************
|
|
*
|
|
* raylib [core] example - Picking in 3d mode
|
|
*
|
|
* This example has been created using raylib 1.3 (www.raylib.com)
|
|
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
|
|
*
|
|
* Copyright (c) 2015 Ramon Santamaria (@raysan5)
|
|
*
|
|
********************************************************************************************/
|
|
|
|
#include "raylib.h"
|
|
|
|
int main(void)
|
|
{
|
|
// Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
const int screenWidth = 800;
|
|
const int screenHeight = 450;
|
|
|
|
InitWindow(screenWidth, screenHeight, "raylib [core] example - 3d picking");
|
|
|
|
// 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
|
|
|
|
Vector3 cubePosition = { 0.0f, 1.0f, 0.0f };
|
|
Vector3 cubeSize = { 2.0f, 2.0f, 2.0f };
|
|
|
|
Ray ray = { 0 }; // Picking line ray
|
|
|
|
bool collision = false;
|
|
|
|
SetCameraMode(camera, CAMERA_FREE); // Set a 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); // Update camera
|
|
|
|
if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON))
|
|
{
|
|
if (!collision)
|
|
{
|
|
ray = GetMouseRay(GetMousePosition(), camera);
|
|
|
|
// Check collision between ray and box
|
|
collision = CheckCollisionRayBox(ray,
|
|
(BoundingBox){(Vector3){ cubePosition.x - cubeSize.x/2, cubePosition.y - cubeSize.y/2, cubePosition.z - cubeSize.z/2 },
|
|
(Vector3){ cubePosition.x + cubeSize.x/2, cubePosition.y + cubeSize.y/2, cubePosition.z + cubeSize.z/2 }});
|
|
}
|
|
else collision = false;
|
|
}
|
|
//----------------------------------------------------------------------------------
|
|
|
|
// Draw
|
|
//----------------------------------------------------------------------------------
|
|
BeginDrawing();
|
|
|
|
ClearBackground(RAYWHITE);
|
|
|
|
BeginMode3D(camera);
|
|
|
|
if (collision)
|
|
{
|
|
DrawCube(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, RED);
|
|
DrawCubeWires(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, MAROON);
|
|
|
|
DrawCubeWires(cubePosition, cubeSize.x + 0.2f, cubeSize.y + 0.2f, cubeSize.z + 0.2f, GREEN);
|
|
}
|
|
else
|
|
{
|
|
DrawCube(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, GRAY);
|
|
DrawCubeWires(cubePosition, cubeSize.x, cubeSize.y, cubeSize.z, DARKGRAY);
|
|
}
|
|
|
|
DrawRay(ray, MAROON);
|
|
DrawGrid(10, 1.0f);
|
|
|
|
EndMode3D();
|
|
|
|
DrawText("Try selecting the box with mouse!", 240, 10, 20, DARKGRAY);
|
|
|
|
if(collision) DrawText("BOX SELECTED", (screenWidth - MeasureText("BOX SELECTED", 30)) / 2, screenHeight * 0.1f, 30, GREEN);
|
|
|
|
DrawFPS(10, 10);
|
|
|
|
EndDrawing();
|
|
//----------------------------------------------------------------------------------
|
|
}
|
|
|
|
// De-Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
CloseWindow(); // Close window and OpenGL context
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
return 0;
|
|
}
|