Help sprite does not show up - GameCreators Forum

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Discan

15

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Joined: 5th Aug 2009

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Posted: 6th Aug 2009 20:33

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I am trying to make a 2D sidescroller but I got the code, added backdrop and a player and stuff but when I run, play the game I only see the backdrop moving but no player.

Player.cpp

+ Code Snippet

#include "DarkGDK.h"
#include "Player.h"
#include "Input.h"


int iPlayerX = 512;
int iPlayerY = 340;
int iPlayerSpeed = 5;
int iPlayerFrame = 7;
int iFrameAnimateDelay = 0;
bool bPlayerIsFiring = false;
int iPlayerBulletY = 0;
int g_PlayerDieFrame = 1;
int g_PlayerExplosionDelay = 0;

void playerSetup ( void )
{
	dbCreateAnimatedSprite ( 1, "Assets\\hahah copy.png ", 3 ,3 , 1 );
	dbSprite ( 1 , iPlayerX , iPlayerY , 1 );
	dbSetSpriteFrame ( 1, iPlayerFrame );
}

void playerUpdate ( void );
void playerAnimate ( void );
void playerReset ( void );
bool playerLevelStart ( void );
bool playerLevelStart2 ( void );
void playerUpdateFire ( void );

Player.h

+ Code Snippet

#pragma once
void playerSetup ( void );


extern int iPlayerX;
extern int iPlayerY;
extern int iPlayerSpeed;

Input.cpp

+ Code Snippet

#include "DarkGDK.h"
#include "Input.h"

bool checkLeft ( void )
{ 
	if ( dbKeyState ( 107 ) )
		return true;

	return false;

}

bool checkRight ( void )
{
	if ( dbKeyState ( 109 ) )
		return true;

	return false;

}

Input.h

+ Code Snippet

#pragma once

bool checkLeft ( void );
bool checkRight ( void );

I also have code for backdrop and main, I can supply them if needed. I will be online for the following hours but leaving tommorow so if anyone has any ideas ? I think it's the positioning of the sprite the coordinates are wrong ? If so does anyone have some code snippet so it prints coordinates of my mouse icon when I hover around so I can place sprite accordingly ?Thanks.

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Mista Wilson

16

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Joined: 27th Aug 2008

Location: Brisbane, Australia

Posted: 7th Aug 2009 05:38

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Debug Code for displaying mouse co-ords/info :

+ Code Snippet

// allocate some memory for a buffer.
char* buf = new char[256]; // 256k character array buffer on heap
// start copying info into the buffer.. could use different techs here rather than strcpy/cat and dbStr, they are used for simplicity.
strcpy(buf, "Mouse Position X : ");
strcat(buf, dbStr(dbMouseX());
strcat(buf, "\nMouse Position Y : ");
strcat(buf, dbStr(dbMouseY());
strcat(buf, "\nMouse Position Z(wheel) : ");
strcat(buf, dbStr(dbMouseZ());
strcat(buf, "\nMouse Button Clicked : ");
strcat(buf, dbStr(dbMouseClick());
dbText(0, 0, buf); // print our buffer starting at 0, 0

delete []buf; // dont forget to deallocate the memory somewhere..

ideally, you would allocate the memory once, somewhere before you are going to use it obviously(just before you enter main loop), and delete it after you have finished with it(just after main loop exits). Alternatively you could allocate/deallocate in the loop but I think that may not be a very good practice for memory management.

If it ain't broke.... DONT FIX IT !!!

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Bran flakes91093

16

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Joined: 13th Sep 2008

Location: Crazy Land

Posted: 7th Aug 2009 05:58 Edited at: 7th Aug 2009 06:04

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@Mista Wilson

I smell memory leakage!

dbStr() allocates memory each time it is called, so if it's not handled properly, it will cause memory leaks.

Here is a better way to achieve what you need.

+ Code Snippet

// allocate some memory for a buffer.
char* buf = new char[256]; // 256k character array buffer on heap
// start copying info into the buffer.. could use different techs here rather than strcpy/cat and dbStr, they are used for simplicity.
sprintf_s(buf, 256, "Mouse Position X : %d"
		    "\r\nMouse Position Y : %d"
		    "\r\nMouse Position Z(wheel) : %d"
		    "\r\nMouse Button Clicked : %d",
		    dbMouseX(), dbMouseY(), dbMouseZ(), dbMouseClick());
dbText(0, 0, buf); // print our buffer starting at 0, 0

delete []buf; // dont forget to deallocate the memory somewhere..

Your_Health = (My_Mood == HAPPY) ? 100 : NULL;

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Discan

15

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Joined: 5th Aug 2009

Location:

Posted: 10th Aug 2009 18:01

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wow this problem was so easy to solve from the first ... each code I've used to display my coordinates apparently worked...the problem was that it appeared BEHIND the backdrop .. only when I disabled the backdrop I could see it.. thanks

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Dark GDK / Help sprite does not show up