Game Maker Help Thread!

[hyperme]

How do I make something a light source for dark levels?  The next release of SE+ depends on this!

[DariusK]

It's in the oScreen object, in the Begin Step event, line 156.

Code:

  else if (isLevel() and instance_exists(oPlayer1))
    {
        if (global.darkLevel and not oPlayer1.dead)
        {
            surface_set_target(darkSurf);
            draw_set_color(c_black);
            draw_rectangle(0, 0, screen_w, screen_h, false);
            draw_set_color(make_color_rgb(255-255*oLevel.darkness,255-255*oLevel.darkness,255));
            if (instance_exists(oLampRed))
            {
                with oPlayer1
                {
                    distToLamp = distance_to_object(oLampRed);
                    if (distToLamp <= 96)
                    {
                        draw_set_color(make_color_rgb(255-distToLamp,120-(96-distToLamp),120-(96-distToLamp)));
                    }
                }
            }
            if (instance_exists(oLampRedItem))
            {
                with oPlayer1
                {
                    distToLamp = distance_to_object(oLampRedItem);
                    if (distToLamp <= 96)
                    {
                        draw_set_color(make_color_rgb(255-distToLamp,120-(96-distToLamp),120-(96-distToLamp)));
                    }
                }
            }
            draw_circle(oPlayer1.x-view_xview[0], oPlayer1.y-view_yview[0], 96-64*oLevel.darkness, false);
            with oFlare
            {
                draw_circle(x-view_xview[0], y-view_yview[0], 96, false);
            }
            with oFlareCrate
            {
                draw_circle(x-view_xview[0], y-view_yview[0], 96, false);
            }
            with oLamp
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 96, false);
            }
            with oLampItem
            {
                draw_circle(x-view_xview[0], (y-4)-view_yview[0], 96, false);
            }
            with oArrowTrapLeftLit
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oArrowTrapRightLit
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oTikiTorch
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oFireFrog
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oSpearTrapLit
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oSmashTrapLit
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oExplosion
            {
                draw_circle(x-view_xview[0], y-view_yview[0], 96, false);
            }
            with oLava
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 32, false);
            }
            with oScarab
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], 16, false);
            }
            with oGhost
            {
                draw_circle((x+16)-view_xview[0], (y+16)-view_yview[0], 64, false);
            }
            surface_set_target(screen);
            draw_set_blend_mode_ext(bm_dest_color, bm_zero);
            draw_set_alpha(1);
            draw_surface(darkSurf, 0, 0);
            draw_set_blend_mode(bm_normal);
        }

If you want it to just light up like a scarab or whatever, you can just add:

Code:

           with oYourObject
            {
                draw_circle((x+8)-view_xview[0], (y+8)-view_yview[0], YOURSIZEHERE, false);
            }

Where YOURSIZEHERE is the radius of the circle in 16-pixel tiles (so a value of 16 would illuminate two tiles all around from the center, 8 would just illuminate the one tile, etc).

If you want it to behave more like a lamp, where the closer you get the brighter the screen gets, you'll just want to copy the lamp code:

Code:

if (instance_exists(oYourObject))
            {
                with oPlayer1
                {
                    distToLamp = distance_to_object(oYourObject);
                    if (distToLamp <= 96)
                    {
                        draw_set_color(make_color_rgb(255-distToLamp,120-(96-distToLamp),120-(96-distToLamp)));
                    }
                }
            }

[Arucard]

This is why your nick-name is now Proffessor K. 

[gummybears123]

Dr. K sounds better

[Kirby]

Anyone know where the sprite for the rubble on top of blocks are?

Like the cave, lush, ice, temple blocks. There's some rubble on top that I can't seem to find the sprite for.

[Arucard]

You mean the little bumpy stuff that forms on top of the blocks?(in each level's folder under Block ending with the suffix "top") Or the actual rubble left when they are destroyed? (under the "effects" folder starting with sRubble)

[Kirby]

Both, thanks for your help. Going to finish up this mod now.

[marsgreekgod]

help! my bomb rock doesn't seem to work right. How would one make a rock that blows up when ever it stops, and goes flying then stops when it lands, and then blows up and keeps going?

[Kirby]

You mean the little bumpy stuff that forms on top of the blocks?(in each level's folder under Block ending with the suffix "top") Or the actual rubble left when they are destroyed? (under the "effects" folder starting with sRubble)

I changed both of them, but the top is still brown. Any idea why?

[marsgreekgod]

Um... change backgrounds, there is some stuff there.

[Kegluneq]

help! my bomb rock doesn't seem to work right. How would one make a rock that blows up when ever it stops, and goes flying then stops when it lands, and then blows up and keeps going?

Code:

if (xVel = 0 and yVel = 0)
    make an explosion

Right?

[Arucard]

You'd probably want some timer in there too though right?

[marsgreekgod]

help! my bomb rock doesn't seem to work right. How would one make a rock that blows up when ever it stops, and goes flying then stops when it lands, and then blows up and keeps going?

Code:

if (xVel = 0 and yVel = 0)
    make an explosion

Right?

Thats what I have. makes a flying rock that doesn't go bomb and hurts you which some times can be picked up and some times not. If it can be picked it, it kills you to do so.

[MagiMaster]

It's very likely that the velocity will never be exactly 0, unless you pick the item up, which would force it to be 0. Instead, you should check if the velocity is close to 0.

Try this, though you might have to adjust the cutoff point.

Code:

if(xVel*xvel + yVel*yVel < 0.001)
    ...

[marsgreekgod]

It's very likely that the velocity will never be exactly 0, unless you pick the item up, which would force it to be 0. Instead, you should check if the velocity is close to 0.

Try this, though you might have to adjust the cutoff point.

Code:

if(xVel*xvel + yVel*yVel < 0.001)
    ...

I would of thought that, but... my velocity check works with arrows just fine! remember the bomb arrows? same check. remember they arrows that destroy themselves in evil death? same check...
I think it's something to do with the rock itself.
(also the velocity well be exactly 0 a lot, when ever they are on the ground, I checked, game maker rarely has such a problem)