i was trying to write a program in c language which can detect mouse movement, but the program which i have written can only detect the mouse click or scroll the program which i have written given below..
Code:
#include<stdio.h>
#include<string.h>
#include <ncurses.h>
int main() {
}
[code]....
run the programme with linked-lncurses. improve my program which also detect when the mouse moves.
I am trying to detect when my mouse is over a item. I can get it working if its a square shape an stuff.
(LOWORD(lParam) > 133) && (LOWORD(lParam) < 154) && (HIWORD(lParam) > 0) && (HIWORD(lParam) < 21)
but how would i detect if its over the white spot in this image? [URL] ....
i just drew a simple shape i need to detect from more edges but how to do it?.
I want to make history of user's movement. Whenever the user inputs something, and the input is valid, then the input information will be stored into something. And later on, the history shows up whenever I pick the choice.
I have the specific program to make history.
I am currently working on quite complex project. Anyway, im not gonna go into deeper details. What I am stuck with is following function.
What I've got so far is basically a picture, and what I am trying to do is to set continuous movement to it, allow the user to control the directions of its movement by pressing "Up" , "Down", "Left " and "Right" key. The best example I can base my idea on is "Snake" game.
I don't have much of a code, however I am willing to upload it upon request.
I am currently working on an arcade game for my final assignment this year. I am struggling to get a sine wave movement with the saucer. Here is the code for it:
void ArcadeGame::spawnSaucer() {
Texture* pTexture = getTexture("saucertexture");
m_pSaucer = new GameObject(pTexture, "saucer");
m_pSaucer -> setPosition(1000, 300);
m_pSaucer -> setVelocity(-1, 10 * sin(1 * 3 * PI / 180), sin(1) * OBJECT_DEFAULT_SPEED);
addGameObject(m_pSaucer);
m_pSaucer->setSolid(true);
}
I'm making a 2D rpg game, but I have some problem with the sprite movement. The sprite movement feels choppy. That's because I move the sprite 5 pixels per seconds. I now that I need somthing that have to do with SDL_getTicks and deltatime, but I dont know how to use/implement it.
Here is a little part of my code:
float spriteDstY;
float spriteDstX;
float speed = 5;
while(SDL_PollEvent(&event)!= 0) {
if (event.type == SDL_QUIT)
[Code] ....
I'm trying to get smooth sprite movement in SDL by using delta time. The way I'm calculating it is
long last = 0;
float deltaTime = 0.0;
...
long now = SDL_GetTicks();
//deltatime is in seconds
if (now > last) {
deltaTime = ((float)(now - last)) / 1000;
last = now;
}
And I'm updating the sprite like this:
virtual void update(float deltaTime) {
float dx = 100*deltaTime;
transform->position.x += dx;
}
But the movement is still noticeably jerky. Also, if I'm correct, my sprite should move 100 pixels to the right every second using this method, so it should take the sprite 8 seconds to reach the end of my window, since it's 800 pixels wide, but it takes it way longer than that. In other words the delta time I'm calculating can't be correct. Am I doing something horribly wrong? I'm guessing it has something to do with rounding, but I'm not sure.
I'm trying to implement keyboard controls to move a sphere(Player) with respond to keypress. Currently, when I press any key my character will move to the right by 0.1. How can I move my character with w(up),a(left),s(down),d(right) in their respective directions using respond to keypress?
Code:
class Player {
private:
double x, y;
public:
Player(double a, double b){x=a;y=b;}
void respondtokeypress(char a)
[Code] ....
Current compiler doesn't have correctly defined debugger!
ToDoList: Warning: No to-do types or comment symbols selected to search for, nothing to do.
ToDoList: Warning: No to-do types or comment symbols selected to search for, nothing to do.
Create new parser for project 'Test'
Project 'Test' parsing stage done!
It is my first time in use lock detect so i didn't now how to start.
how to define the lock detect?
I am using scientific linux. In the directory user/project/Build, after I ran 'make' to compile and link all the cpp files,I had no problems. But then, when I went to directory user/run/run.sh, which runs the project binary in user/project/Build/bin/project, I get a segmentation fault error. In the directory user/run, I enter 'gdb' in the command prompt and get the message "*** No targets specified and no makefile found. Stop." What am I supposed to do to detect the segmentation fault?
View 2 Replies View RelatedHow would I detect if any letter key is pressed. Would I have to use GetAsyncKeyState() for every letter key? Or could I have some kind of loop going through all the hexadecimal values for every letter? I don't know how I would go through hexadecimal values with a loop.
View 6 Replies View Relatedi build an application, that makes the used memory growing. i don't get any error(unless, i believe, that i use some memory value(i don't know the value), but i see the memory growing very slowly. how can i detect the memory leak?
View 4 Replies View RelatedIs it possible to create a programme which would detect and change word endings? I would like to write a simple verb conjugator, i.e.:
If you enter a word ending with AAA then I would like the programme to show, say, six modified words:
Word with the replaced ending, for example QWERTYAAA changes into QWERTYBBBQWERTYAAA changes into QWERTYCCCQWERTYAAA changes into QWERTYDDD etc.
Is it possible to do it? If so, how?
So I need to write a function that has 2 arguments that are strings. It returns 1 if the first string is a subsequence of the second string, and 0 otherwise.
For example, given 2 strings like "foobar" and "obr", the function should returns 1 whereas "foobar" and "obo" returns 0.I have tried writing the code myself,
Code:
int sub(char *s, char *t) {
int i;
char *p;
for (i=0; t[i] != ''; i++) {
p=strchr(s,t[i]);
if (p==NULL)
return 0;
else
strcpy(s,p);
}
return 1;
}
So my strategy is as follows:
1. Find the first letter of the second string in the first string (foobar).
2. If there's a match then continue to search for the second letter of the second string starting from the index of the first letter plus 1. (obar). Otherwise return 0,.........
However the function always return 1 no matter what the input strings are.
I have an application in c# that i don't want it to connect to the internet in a virtual environment, like virtualbox, vmware virtual pc and so on. Therefore i though that disabling the virtual network card inside the virtual machine would be a good idea.
View 3 Replies View RelatedI don't use Visual Studio and/or C++ so I would like to do it without them. I found this article c++ - How to determine CPU and memory consumption from inside a process? - Stack Overflow
I tried some lines of code but no one works for me.
Code:
#include "windows.h"
typedef struct _MEMORYSTATUSEX {
DWORD dwLength;
[Code]....
These was just my first tries to work with da MEMORYSTATUSEX.
I would like to find out if there is free memory at least ... (some value) and similar.
I want to detect colors that in the black rectangle. [URL] How can I do? What library should I use?
View 7 Replies View RelatedSo, I've been working on a project recently, and the only thing remaining to do is a detector to whenever down arrow key is pressed. The down arrow key can only trigger when a certain check box is checked and this will have to work with a timer either. The problem is that how to make the down arrow key press detector(I've got the check box and timer ready tho).
View 10 Replies View RelatedI'm trying to implement this on ubuntu, to compile and run only under ubuntu.
I found 100s of other attempts at answering the general question of arrow key press in c++. Nothing solid.
Some recommend using the Readline for the functionality I am trying to implement, but I need to stay clear of GNU licences if I can for this project. And some tips only work on projects for windows machines... for example the conio library.
For linux there may be the option of using the ncurses library which I will take a look at, but I am stubborn and want to implement this myself. It should be an easy straight forward thing to do, which is why I am a bit frustrated at the moment.
Here is my test code so far.
#include <iostream>
#include <sstream>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
using namespace std;
int main(void) {
char a;
stringstream ss;
string s;
[Code] ....
So! This works... 80% of the problem is solved. If you compile this, g++ under linux, ubuntu in my case, and run. Each keystroke reveals the correct key numbers.
q=113
w=119
when I click on the up key I get,
up = 279165
I thought, I can use this number is a if(int == '279165') to detect the up key.
I was not so lucky... this int is not behaving like an int!
So I modified the code to see it I could carry out an int operation on this number.
I added a 100000 to int i.
cout<< i + 100000;
Code:
#include <iostream>
#include <sstream>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
using namespace std;
int main(void) {
char a;
stringstream ss;
string s;
[Code] .....
Compiling and running this, and pressing the UP key gives the following number.
100027100091100065
Some some sort of array, something like, [27][91][65].
I tried all ways to access these individual numbers, actually the third one for comparison purposes, but no luck.
For completeness sake I list the other arrows.
UP = [27][91][65]
DOWN = [27][91][66]
LEFT = [27][91][68]
RIGHT = [27][91][67]
A little further digging shows that these numbers are derived from the representation of a "multi-char" constant, the data type given when pressing special characters...
Now here is the main problem I have, I can find ANY decent documentation on how to handle and play with "multi-char" .
I am trying to have a program that I am writing detect a controller and then say whether there is or is not one connected. But I am getting a lot of errors(25 actually) . Here is my code:
Code:
#include <stdio.h>
#include <Xinput.h>
#include <stdbool.h>
#include <Windows.h>
void main()
[Code] ....
puts("Error no controller was found on any port");
return 0;
}
I made this (found the trick on the net)that allow to use the guide button of a 360 pad. I use wxdevc++.
#include <windows.h>
#include <stdio.h>
static const int guide_button_value = 0x0400;
/* the secret function outputs a different struct than the official GetState. */
typedef struct {
unsigned long eventCount;
[Code] .....
But I wanted to detect if it's held down for 3 second before do my printf
The usual solution is to detect if the button is pressed and if it's realeased but I can't use ximputgetstate or regular getstate (or I haven't successfully done it) .
I am trying to compile the files file1.c and file2.c using Mingw (gcc)
/////////////////////
header.h
////////////////////
#ifndef header
#define header
int variable;
#endif
[Code] ....
I would have expected a multiple defnition error when linking the two .c files. as in both the files, with the 'int variable' command, the variable 'variable' is defined (memory allocated) and during linking the linker doesnot know which variable to link to.
I get an error though when i use "int variable =123;" in the header file instead of the "int variable;" statement. i dont understand as in both the cases the variable is defined (memory is allocated) and the linker should give a multiple definition error.
I have a problem with UDP Multicast. I managed to send UDP Multicast telegrams and receive them. But when I receive the telegram I need to find out to which multicast group address it was sent. So far I have:
Code:
recvfrom( hSocket,
pcData,
nMaxDataLen,
0,
(SOCKADDR*) &from,
&len);
When I read from.sin_addr.S_un.S_addr; then I get the original IP Adresse from the sender PC but I also would like to know to which group address it was sent. Is there a way to get this infoamtion?
(OS Windows)how do i detect when a file has been changed ? do i need to monitor this file and check the last modified date&time? (how do i do this?) furthermore how do i detect a certain application launch?
View 3 Replies View RelatedIs there a way to detect whether or not a template type has a protected destructor?
I see there is std::is_destructible in C++11, but I can't tell if this will return true or false for the protected case. Also, I'm interested in finding a solution for C++03 as well.