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started working on Engine::pickObjects()

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git-svn-id: svn://anubis/anaglym/trunk@249 99a6e188-d820-4881-8870-2d33a10e2619
This commit is contained in:
Josh Holtrop 2010-02-18 05:29:22 +00:00
parent f8fbdf8fcb
commit e2dc4529cc
2 changed files with 26 additions and 1 deletions
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25
Engine.cc
View File

@ -14,7 +14,7 @@
#include <iostream>
#include <sstream>
#include <string>
#include <math.h> /* fabs() */
#include <math.h> /* fabs(), tan() */
#include <GL/gl.h>
#include <GL/glu.h>
#include "SDL.h"
@ -99,6 +99,7 @@ Engine::Engine(const string & path, Video & video)
m_engine_cursor_visible = m_video.getCursorVisible();
m_script_cursor_visible = false;
m_input_grabbed = m_video.getInputGrabbed();
m_screen_dist = (m_video.getWidth() / 2.0) / tan(30.0 * M_PI / 180.0);
size_t pos = path.find_last_of("\\/");
m_engine_path = (pos != string::npos) ? string(path, 0, pos) : ".";
@ -622,6 +623,28 @@ void Engine::clearWorld()
}
}
refptr< vector<int> > Engine::pickObjects(int x, int y)
{
dMatrix3 r;
dVector3 right, forward, up;
dVector3 rotated_direction, initial_direction;
up[0] = m_up[0];
up[1] = m_up[1];
up[2] = m_up[2];
forward[0] = m_center[0] - m_eye[0];
forward[1] = m_center[1] - m_eye[1];
forward[2] = m_center[2] - m_eye[2];
cross_product(right, forward, up);
dRFrom2Axes(r, right[0], right[1], right[2],
forward[0], forward[1], forward[2]);
initial_direction[0] = x - m_video.getWidth() / 2;
initial_direction[1] = m_screen_dist;
initial_direction[2] = m_video.getHeight() / 2 - y;
dMultiply0(rotated_direction, initial_direction, r, 1, 3, 3);
/* TODO: finish */
}
void Engine::debug_hook(lua_Debug * debug)
{
Uint32 ticks = SDL_GetTicks();

2
Engine.h
View File

@ -195,6 +195,7 @@ class Engine
updateCursorVisibility();
}
bool getScriptCursorVisible() { return m_script_cursor_visible; }
refptr< std::vector<int> > pickObjects(int x, int y);
void getScreenSize(int * width, int * height);
void drawText(const char * text, GLfloat r, GLfloat g, GLfloat b,
@ -274,6 +275,7 @@ class Engine
SDL_Event m_exitEvent;
Uint32 m_event_time;
FTFont * m_font;
double m_screen_dist;
bool m_event_init_present;
bool m_event_reinit_present;