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	==Definition==		==Definition==
-	'''INT''' Collision ( <'''INT''' processID|processType> )	+	'''INT''' Collision ( <'''INT''' processID|processTypeID> )
	Checks if a [[process]] collided with the process calling Collision().		Checks if a [[process]] collided with the process calling Collision().
		+	When a [[processTypeID]] is specified, there could be multiple fitting collisions. In this case, collision() returns a [[processID]] on each subsequent call, until it returns 0. This can be reset by use of the [[frame]]; statement, and in such case, frame(0); can be handy.
	== Parameters ==		== Parameters ==
	{|		{|
-	| '''INT''' processID or processType || - The ID or Type of the process to be checked.	+	| '''INT''' processID<nowiki>|</nowiki>processTypeID || - The ProcessID of the process or the ProcessTypeID of the type of processes to be checked.
	|}		|}
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	== Example ==		== Example ==
	<pre>		<pre>
-	Program example;
-	Private
-	int map;
-	Begin
-
-	// Create the graph for the ship
-	map = new_map(20,20,8);
-	map_clear(0,map,rgb(0,255,255));
-
-	// Create the graph for the Main process
-	graph = new_map(50,50,8);
-	map_clear(0,graph,rgb(255,255,0));
-
-	// Position the main process and create the ship
-	x = y = z = 100;
-	SpaceShip(0,map,100,100,0,20,5000);
-
-	Loop
-	frame;
-	End
-	End
-
	Process SpaceShip( int file , int graph , int x , int y , int angle , int maxspeed , int maxturnspeed )		Process SpaceShip( int file , int graph , int x , int y , int angle , int maxspeed , int maxturnspeed )
	Private		Private
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	// Handle collision		// Handle collision
	if( (collisionID = collision(type main)))		if( (collisionID = collision(type main)))
-	text = "collision with: " + collisionID;	+	text = "collision with: " + collisionID;
	else		else
	text = "no collision";		text = "no collision";
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	frame;		frame;
	End		End
		+	End
		+
		+	Process Main()
		+	Private
		+	int map;
		+	Begin
		+
		+	// Create the graph for the ship
		+	map = new_map(20,20,8);
		+	map_clear(0,map,rgb(0,255,255));
		+
		+	// Create the graph for the Main process
		+	graph = new_map(50,50,8);
		+	map_clear(0,graph,rgb(255,255,0));
		+
		+	// Position the main process and create the ship
		+	x = y = z = 100;
		+	SpaceShip(0,map,100,100,0,20,5000);
		+
		+	Repeat
		+	frame;
		+	Until(key(_ESC))
		+
		+	let_me_alone();
		+
	End		End
	</pre>		</pre>
-	Used in example: [[new_map]](), [[map_clear]](), [[write_string]](), [[advance]](), [[graph]], [[type]]	+	Used in example: [[write_string]](), [[key]](), [[collision]](), [[new_map]](), [[map_clear]](), [[advance]](), [[let_me_alone]](), [[graph]], [[type]]
		+
		+	{{Funcbox
		+	| category = Processinteraction
		+	}}

---

Current revision

Contents 1 Definition 2 Parameters 3 Returns 4 Example

[edit] Definition

INT Collision ( <INT processID|processTypeID> )

Checks if a process collided with the process calling Collision().

When a processTypeID is specified, there could be multiple fitting collisions. In this case, collision() returns a processID on each subsequent call, until it returns 0. This can be reset by use of the frame; statement, and in such case, frame(0); can be handy.

[edit] Parameters

INT processID|processTypeID

- The ProcessID of the process or the ProcessTypeID of the type of processes to be checked.

[edit] Returns

INT : The ID of the collided process.

0	- No collision
>0	- The processID of the process colliding with the current process

[edit] Example

Process SpaceShip( int file , int graph , int x , int y , int angle , int maxspeed , int maxturnspeed )
Private
    int speed;
    int collisionID;
    string text;
Begin
	write_string(0,0,0,0,&text);
    Loop
        // Handle movement
        speed+=key(_up)*(speed<maxspeed)-key(_down)*(speed>-maxspeed);
        angle+=(key(_left)-key(_right))*maxturnspeed;
        advance(speed);
        // Handle collision
        if( (collisionID = collision(type main)))
            text = "collision with: " + collisionID;
        else
            text = "no collision";
        end
        frame;
    End
End

Process Main()
Private
    int map;
Begin

    // Create the graph for the ship
    map = new_map(20,20,8);
    map_clear(0,map,rgb(0,255,255));

    // Create the graph for the Main process
    graph = new_map(50,50,8);
    map_clear(0,graph,rgb(255,255,0));

    // Position the main process and create the ship
    x = y = z = 100;
    SpaceShip(0,map,100,100,0,20,5000);

    Repeat
        frame;
    Until(key(_ESC))

    let_me_alone();

End

Used in example: write_string(), key(), collision(), new_map(), map_clear(), advance(), let_me_alone(), graph, type

Processinteraction Functions

• Advance() • Collision() • Exists() • Get_angle() • Get_dist() • Get_id() • Let_me_alone() • Signal() • Xadvance() •