Jumping from "one way platform"

[Smenkare]

Hi guys, i have object spear which i can jump from. I have problem with colision. If i jump on spear everything is ok but if i jump from under it i jump higher because player object has more steps with collision event. I think its the problem and i dont know how to handle it. I think that changing y. position of my player object would help but i cant change it. I was trying to change var height but it didnt work too well. Any ideas?


Collision event

if(vsp > 0)
    {
    
        var height = sPlayer.y - other.y;
        if(height < 0) 
            {
with(other)
        {
            if (spearIn) 
            
                { 
                    
                    spearDest = true;
                    sPlayer.vsp -= 100;
                }
        }
            }
    }

spear step event

if (place_meeting(x,y,oWall)) && (spearDest == false)
    {    
        hspeed = 0;
        sprite_index = sSpearIn;
        spearIn = true;
    }
    
    if(animation_end()) && (spearDest == false) && (spearIn == true)
            {
                image_speed = 0;
            }
            
    
    
    if(spearDest) 
        {
            
            sprite_index = sSpearDestroy;
            image_speed = 1;
            if(animation_end())
                {
                    instance_destroy();
                }
            
        
        }

i dont think spear event is needed here .

 

[Nocturne]

A quick fix is simply to use an alarm to ensure that the extra speed is only added once... So, for example:

if(vsp > 0)
    {
    var height = sPlayer.y - other.y;
    if(height < 0)
        {
        with(other)
            {
            if (spearIn)
                {
                spearDest = true;
                if alarm[0] < 0 sPlayer.vsp -= 100;
                alarm[0] = 5;
                }
            }
        }
    }

You MUST add a comment into the alarm event that you use for this to work though! If you don't then the alarm will not run and will always be -1.

 

[Smenkare]

It doesnt work, i think that alarm resets with every collision step. Could anyone help me?

Bump

 

[Nidoking]

Put brackets around the part that should only run if the alarm is less than zero. It's basic programming, so I really hope you understand what you're doing and aren't just helplessly pasting what people post and hoping it works without you needing to think about it at all. Given that you put all of four hours of thought into it, I'm going to guess the answer to that is no.

 

[Smenkare]

I dont know, i was thinking about this whole day, maybe im just stupid but i dont understand why it doesnt work.

if(vsp > 0) && (colided == false)
    {
 
        var height = sPlayer.y - other.y;
        if(height < 0)
            {
with(other)
        {
            if (spearIn)
         
                {
                 
                    spearDest = true;
                    sPlayer.colided = true;
                    if (sPlayer.alarm[0] < 0)
                    {
                    sPlayer.vsp -= 100;
                    sPlayer.alarm[0] = 5;         
                 
                    }
                 
                 
                }
        }
            }
    }

 

[TailBit]

Note that if there is no alarm 0 event, then it won't count down .. so at least leave a comment in it

 

[Smenkare]

Note that if there is no alarm 0 event, then it won't count down .. so at least leave a comment in it

I know about this. It still doesnt work as i should.