Question about lifting entities

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Question about lifting entities #259271 04/05/09 07:53 04/05/09 07:53
Joined: Aug 2006 Posts: 96 Netherlands P Polypfreak1987 OP Junior Member
Polypfreak1987 OP Junior Member P Joined: Aug 2006 Posts: 96 Netherlands	Hello all, I have an entity wich I want to lift with a constant speed. How do I do this? I have the following code already. But it's speed is going up. Code: var height = 256.000; function up() { while(height <= 1531) { //if(height <= 1531.000) { height += 0.002; //} wait(1); } } action molen { while(my) { my.z = height; ... if(key_w == 1) { up(); } ... } } So if I pres the key W once, the entity need to move up at a constant speed. I hope you can help me. Kind regards.

Re: Question about lifting entities [Re: Polypfreak1987] #259274 04/05/09 08:15 04/05/09 08:15
Joined: Mar 2009 Posts: 88 Walori Junior Member
Walori Junior Member Joined: Mar 2009 Posts: 88	The reason why the speed is increasing all the time is that the +z increase (could be in your function or action) is called again and again, making your speed increase ^2 all the time. personally I'd try change the code to: Code: if(key_w == 1 && height <= 1531.00){ up(); } Code: function up() { while(height <= 1531) { height += 0.002; wait(1); } } and move that my.z out of the while loop, because it does put my to 256 on each loop cycle. Hopefully this helps -Walori EDIT: Replacing a code, sorry. Just realized you wanted the enitity to move contantly (learn to read <-) which mine did not. with this however it should work, just move the height out from the loop in the action and it should do the trick -Walori Last edited by Walori; 04/05/09 08:22.

Re: Question about lifting entities [Re: Walori] #259287 04/05/09 10:05 04/05/09 10:05
Joined: Aug 2006 Posts: 96 Netherlands P Polypfreak1987 OP Junior Member
Polypfreak1987 OP Junior Member P Joined: Aug 2006 Posts: 96 Netherlands	Well, that was not exactly what I mean. Maybe I wasn't clear enough in my first post. When you touch the key (w) and release it again the entity need to go up untill 1531 it reached. And with a constant speed.

Re: Question about lifting entities [Re: Polypfreak1987] #259330 04/05/09 14:12 04/05/09 14:12
Joined: Jul 2007 Posts: 959 nl F flits User
flits User F Joined: Jul 2007 Posts: 959 nl	you are calling the up fucntions more times and use time_step if(!proc_status(up)) { up(): } height += 0.02*time_step; "empty"

Re: Question about lifting entities [Re: flits] #259376 04/05/09 18:56 04/05/09 18:56
Joined: Aug 2006 Posts: 96 Netherlands P Polypfreak1987 OP Junior Member
Polypfreak1987 OP Junior Member P Joined: Aug 2006 Posts: 96 Netherlands	Thank you. You helped me a lot. Now I have another question about this. The entity need to come down again. I have the following code for up and down. Code: function up() { while(height <= 1531) { height += 1.5time_step; wait(1); } } function down() { while(height >= 256) { height -= 1.5time_step; wait(1); } } action molen { while(my) { my.z = height; if(key_w == 1) { if(!proc_status(up)) { up(); } } if(key_s == 1) { if(!proc_status(down)) { down(); } } wait(1); } } This is the problem. When I press the key W it goes up. But when I press the key S when the entity is on his way up, the entity will stop en not comming down. How can I fix this? Thanks in advance.

Re: Question about lifting entities [Re: Polypfreak1987] #259379 04/05/09 19:35 04/05/09 19:35
Joined: Jul 2007 Posts: 959 nl F flits User
flits User F Joined: Jul 2007 Posts: 959 nl	simple soultion Code: function up() { while(height <= 1531 && !key_w) { height += 1.5time_step; wait(1); } } function down() { while(height >= 256 && !key_s) { height -= 1.5time_step; wait(1); } } "empty"

Re: Question about lifting entities [Re: flits] #259577 04/06/09 19:02 04/06/09 19:02
Joined: Aug 2006 Posts: 96 Netherlands P Polypfreak1987 OP Junior Member
Polypfreak1987 OP Junior Member P Joined: Aug 2006 Posts: 96 Netherlands	Thank you very much. You helped me a lot

Re: Question about lifting entities [Re: Polypfreak1987] #259592 04/06/09 20:26 04/06/09 20:26
Joined: Jul 2007 Posts: 959 nl F flits User
flits User F Joined: Jul 2007 Posts: 959 nl	np but i think that this is not the nicest way to do this maby you can explain your think you want to do and maby i can make somthing nicer else this will do also "empty"

Re: Question about lifting entities [Re: flits] #259794 04/07/09 18:21 04/07/09 18:21
Joined: Aug 2006 Posts: 96 Netherlands P Polypfreak1987 OP Junior Member
Polypfreak1987 OP Junior Member P Joined: Aug 2006 Posts: 96 Netherlands	It is indeed not the nicest way. If I press the "W"-key. The entity suddenly go up. But I want to speed up to a maximum speed. This is the function right now: Code: function up() { while(height <= 1531 && !key_x) { height += 2*time_step; wait(1); } } The 2 is the maximum speed which is needed. I hope you understand me. Thanks in advance.

Re: Question about lifting entities [Re: Polypfreak1987] #259808 04/07/09 19:56 04/07/09 19:56
Joined: Jul 2007 Posts: 959 nl F flits User
flits User F Joined: Jul 2007 Posts: 959 nl	Code: function up() { var i = 0; while(height <= 1531 && !key_x) { i += 0.1time_step; i = clamp(i,0,2); height += itime_step; wait(1); } } dont know what type fo aceleration you are seaching for but his is the most easly thing to use "empty"

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