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Collision
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| ==Definition== | ==Definition== | ||
| - | '''INT''' Collision ( <'''INT''' processID| | + | '''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 | + | | '''INT''' processID<nowiki>|</nowiki>processTypeID || - The [[ProcessID]] of the process or the [[ProcessTypeID]] of the type of processes to be checked. |
| |} | |} | ||
Revision as of 00:32, 2 May 2007
Contents |
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.
Parameters
| INT processID|processTypeID | - The ProcessID of the process or the ProcessTypeID of the type of processes to be checked. |
Returns
INT : The ID of the collided process.
| 0 | - No collision |
| >0 | - The processID of the process colliding with the current process |
Example
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 )
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
Used in example: new_map(), map_clear(), write_string(), advance(), graph, type
