Drag and Drop of Sprites HELP!! - GameCreators Forum

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elsole

14

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Joined: 4th Dec 2009

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Posted: 8th Jan 2010 14:10

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I was trying to think on how to make my sprites be drag and drop using a mouse making but i couldn't figure out how to code this. What i would like to do is that there is my main image, i'll drag and drop it on a specified location and then drop it making them now 2. But my problem is that i can't make another new sprites to be drag and drop not making the other one disappear.

Heres my code:

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void )
{
	dbSyncOn   ( );
	dbSyncRate ( 60 );

	dbCreateAnimatedSprite(1, "archerfiring.png", 2, 2, 1);
	dbCreateAnimatedSprite(2, "archerfiring.png", 2, 2, 2); 
	dbSprite(1, 0, 0, 1);
	dbSetSpritePriority(1, 2);

	while ( LoopGDK ( ) )
	{
		if(dbMouseClick() == 0)
		{
			dbSprite(2, dbSpriteX(2), dbSpriteY(2), 2);
			dbPlaySprite(2, 1, 4, 290);
			
			if(dbSpriteX(2) > 120 && dbSpriteX(2) < 240)
			{
				if(dbSpriteY(2) > 120 && dbSpriteY(2) < 240)
				{
					dbSprite(2, 121, 121, 2);
					dbPlaySprite(2, 1, 4, 290);
				}
			}
		}

		if(dbMouseClick() == 1)
		{
				dbSprite(2, dbMouseX()-30, dbMouseY()-69, 2);
				dbPlaySprite(1, 1, 4, 290);

		}

		dbSync ( );
	}
	return;
}

Thanks!

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Mireben

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Posted: 8th Jan 2010 20:02

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To make sure I understand correctly: when you drag and drop a sprite, you want to create a copy of that sprite at the new location? So the end result is that you will have two sprites? And if you drag and drop one of them again, then three sprites and so on?

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elsole

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Posted: 9th Jan 2010 04:56

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Yes that is clearly what i mean. Could you help me just an idea coz my mind's really crap and got confused on what to do.

Any help would do. Thanks

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Akimon

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Joined: 9th Jan 2010

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Posted: 9th Jan 2010 11:40

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This is what I got so far but the problem is that when you drag, all sprites pop up.

+ Code Snippet

#include "DarkGDK.h"


void DarkGDK ( void )
{
	
	dbSyncOn   ( );
	dbSyncRate ( 60 );

	dbCreateAnimatedSprite(1, "archerfiring.png", 2, 2, 1);
	for(int i = 2; i < 37; i++)
		dbCloneSprite(1, i);

	dbSprite(1, 0, 0, 1);
	dbSetSpritePriority(1, 2);

	int j = 2;

	
	while ( LoopGDK ( ) )
	{
		if((dbMouseClick() == 1) && dbSpriteExist(1))
		{
			dbSprite(j, dbMouseX()-30, dbMouseY()-69, 1);
			
		}
	
		if (dbSpriteExist(j) == 1)
			j++;

		if(dbMouseClick() == 0)
		{
			for (int i = 2; i < 37; i++)
			{
				dbSprite(i, dbSpriteX(i), dbSpriteY(i), 1);
				dbPlaySprite(i, 1, 4, 290);

				if(dbSpriteX(i) > 120 && dbSpriteX(i) < 240)
				{
					if(dbSpriteY(i) > 120 && dbSpriteY(i) < 240)
					{
						dbSprite(i, 121, 121, 1);
						dbPlaySprite(i, 1, 4, 290);
					}
				}
			}
			
		}
	

		dbSync ( );
	}

	return;
}

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Mireben

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Posted: 9th Jan 2010 12:49

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Use dbCloneSprite. Here is a simple program which copies always the first sprite when you press the mouse button and gives a new ID number to the new sprite.

+ Code Snippet

#include "DarkGDK.h"

void DarkGDK ( void )
{
	dbSyncOn();
	dbSyncRate(60);

	dbCreateAnimatedSprite(1, "archerfiring.png", 2, 2, 1);
	dbSprite(1, 0, 0, 1);
	dbSetSpritePriority(1, 2);

	int NumSprites = 1;
	bool MouseDown = false;

	while (LoopGDK())
	{
		if(dbMouseClick() == 1)
		{
			// When the mouse button is just pressed, create a new sprite.
			// The ID number will be the current number of sprites plus one.
			if (! MouseDown) {
				MouseDown = true;
				NumSprites++;
				dbCloneSprite(1, NumSprites);
			}
			// While the mouse button is held down, drag always the last created sprite.
			dbSprite(NumSprites, dbMouseX()-30, dbMouseY()-69, 1);

		} else {
			MouseDown = false;
		}

		// Animate all existing sprites.
		for (int i = 1; i <= NumSprites; i++) dbPlaySprite(i, 1, 4, 290);

		dbSync ( );
	}

	// Delete the created sprites from memory when the program is finished.
	for (int i = 1; i <= NumSprites; i++) {
		dbDeleteSprite(i);
		dbDeleteImage(i);
	}
	return;
}

You can further develop this code to copy that sprite which the mouse is over. The simplest way is probably to create a mouse cursor sprite which moves together with the mouse, then check sprite collision between the mouse sprite and all, already created sprites. This way you can determine which one needs to be cloned and dragged.

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elsole

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Joined: 4th Dec 2009

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Posted: 9th Jan 2010 23:51

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thanks this really help a lot.

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Dark GDK / Drag and Drop of Sprites HELP!!