Beginer is begging for asistence

[shm]

Hallo. I need advice from someone more experienced than i am. (should not be dificult to find here )

I try to create an action game with mouse aiming (Abuse style)
I would like to have aiming cross locked to circle (vis picture) no matter where mouse is positioned, but still it shoud follow the angle. (i hope hope my english makes sense to you)
The cross also should have fixed distance to main char (blue blob)

Please help. I´m nod skilled enough to do this my self. I discovered G.editor only week ago.

With this big issue of mine, there is another question i would like to ask.
Is there any way to rotate actors animation directly by script?
There will be shot represented only by short line. (max 3 pixels wide) Making picture for every possible angle, whitch shot will fly, would be unnecessarily lengthy and too HD space intensive.

Thanks for your time.

[skydereign]

I try to create an action game with mouse aiming (Abuse style)
I would like to have aiming cross locked to circle (vis picture) no matter where mouse is positioned, but still it shoud follow the angle. (i hope hope my english makes sense to you)
The cross also should have fixed distance to main char (blue blob)

I'm not entirely sure if this is what you mean, your picture isn't all that clear, but if you want a crosshair to be at some distance away from an actor, and in the angle of the mouse, you can do this.
crosshair -> Draw Actor -> Script Editor

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double ang = degtorad(direction(player.xscreen, player.yscreen, xmouse, ymouse));
int radius = 200;
xscreen = player.xscreen + cos(ang)*radius;
yscreen = player.yscreen - sin(ang)*radius;

With this big issue of mine, there is another question i would like to ask.
Is there any way to rotate actors animation directly by script?
There will be shot represented only by short line. (max 3 pixels wide) Making picture for every possible angle, whitch shot will fly, would be unnecessarily lengthy and too HD space

In the current version of gE, no, you can't rotate actors via script. And you don't necessarily need to make a frame for every angle, sometimes you just need 8 angles, or 16.

[shm]

Thank you a lot.
This solves half of the problem. Crosshair orbits main char as i want, but do not follow position of mouse. Crosshair starts to rapidly change position around main char with every slight move of mouse or main char movement.
Do you know why is that and what to do with it? ´couse i not...

[lcl]

It's because GE's trigonometric functions require the values given as radians, not degrees.
So, you should use degtorad() to convert ang-variable, which is in degrees, to radians. Result code would be this:

Code: Select all

double ang = direction(player.xscreen, player.yscreen, xmouse, ymouse);
int radius = 200;
xscreen = player.xscreen + cos(degtorad(ang))*radius;
yscreen = player.yscreen - sin(degtorad(ang))*radius;

[shm]

Everything is fine now.

You have my thanks.

[shm]

Time past and i encountered another problem. I will be grateful if someone can help me with that too.
This time its the Physical Response. I used it to my Collision_Tiles which represents solid ground and celings in my game. But when i started to add animations i figured that Physical Response make them starts over and over again. (make it look lagy.) Also it slows x movement on ground.
I thought i can replace Physical Response with simple :

main_char -> collision (top side of Collision_Tiles)

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yvelocity = 0; //turns off falling
grav = 0; //turns off gravity
skok = 0; //jump enabled
skok_ini = 0; //special variable for animations during jump


Well... result is too unpredictable. Sometimes main char lands few pixels under top of tile. Sometimes it flew through it and blocks by next tile. I could never figure any legality.

And to the point. I need to do block falling directly on top of C_Tiles or max 1 pixel in them. Without using Physical Response of course.
I need to block bottom, left and right sides too, but if you help me with top. I can use it for rest.

I hope i mentioned everything vital.
Thanks a lot

[skydereign]

It sounds like you are using xvelocity for left/right movement. There are two fixes for this. One is to use x instead of xvelocity. For instance, putting the following in a keydown event that is set to repeat will do the same thing as setting xvelocity to 5 on key press.

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x+=5;

[shm]

Yes, you´re right. I´m using velocities for all of my movements. Main char continuously speeds up and down as well as slows down during jump.

example of movement to right...
Push Down d

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    vel = 15;
    friction = 1; //friction off
    xvelocity = xvelocity +5;
    if (xvelocity >= vel) xvelocity = vel;


(yes its practicaly copied from tutorials )
Still... i would like to keep this system. Looks good.
I have theoretical idea for perfect solution for my problem, but i don´t know how to write it.

When main char collides with Collision_tiles, it should:
1) Stop the relevant velocity (x for right and left sides and y for top and bottom sides)
2) correct position of main char. (As i mentioned earlier, main char falls trough C_tiles some distance before it stops. My idea was to move it to the edge of C_tile, that he collided. I tried to refer to Collision_tiles.width/length, but this refer to whole shape, that is drawn by the tile. I don´t know how to refer to single tile, which is actualy collided.

Skydereign. Your advice is fine and easy, but i need something little more difficult. Yeah maybe i make too high demands for my first steps with programing on GE but thats just me :p
Still... I very appreciate your help and any help.

[skydereign]

Skydereign. Your advice is fine and easy, but i need something little more difficult.

That's all fine and good as long as there is a reason that the easy fix doesn't apply. Making things harder unnecessarily just causes grief. Now, the method you mentioned is the other easy fix to the problem. People use it for walls all the time, though it can apply to the ground, as shown.
player -> Collision with top side of tiles -> Script Editor

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double xvel = xvelocity;
PhysicalResponse(MOVE_EVENT_ACTOR_ONLY, USE_CALCULATED_MASS, 1.000000,1.000000, 0.000000, 0.000000);
xvelocity = xvel;

The PhysicalResponse will prevent it from moving through the actor, and it sets xvelocity back to the way it was before the collision.