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snowing
#348237
11/24/10 11:37
11/24/10 11:37
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Joined: Sep 2003
Posts: 5,900
Bielefeld, Germany
Pappenheimer
OP
Senior Expert
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OP
Senior Expert
Joined: Sep 2003
Posts: 5,900
Bielefeld, Germany
|
Here is a simple snowing script. It is a demo with a simple black box getting more and more covered with white dots. snowing demo The dots are very small (it depends on the size of the skin), so I want to add additional painting around the dots, but when I use the following part, it shows weird effects and eventually crashes. Maybe, someone has an idea to solve this issue? Thanks in advance.
while(coords_cur_x <= (coords_x + coords_area))
{
pixel_to_bmap(canvas,coords_cur_x, coords_cur_y,pixel);
coords_cur_y += 1;
if(coords_cur_y > (coords_y + coords_area))
{
coords_cur_x += 1;
coords_cur_y = coords_y - coords_area;
}
}
This is the whole script.
#include <litec.h>
#include <d3d9.h>
#include <acknex.h>
#include <default.c>
#define PRAGMA_ZERO
BMAP* canvas;
var format;
var pixel;
var coords_x;
var coords_y;
function snowing()
{
while(1)
{
c_trace(vector(random(30)-15,random(30)-15, 100), vector(random(30)-15,random(30)-15, -100), IGNORE_PASSABLE | IGNORE_ME | SCAN_TEXTURE | ACTIVATE_SHOOT);
wait(1);
}
}
function snowEvent()
{
coords_x = hit.u1;
coords_y = hit.v1;
}
action get_snow()//needs an own variable to prevent it from colliding with similar tarrain actions
{
set(my, POLYGON);
my.emask |= ENABLE_SHOOT;
my.event = snowEvent;
while(1)
{
// if(mouse_left)
// {
// while(mouse_left){wait(1);}
// coords_x = random(10);
// coords_y = random(10);
var coords_area = 1;
var coords_cur_x = coords_x - coords_area;
var coords_cur_y = coords_y - coords_area;
canvas = bmap_for_entity(my, 0); //1 is the number of the skin
format = bmap_lock(canvas, 0); // lock the canvas bitmap
pixel = pixel_for_vec(vector(255,255,255), 100, format);
pixel_to_bmap(canvas, coords_x, coords_y, pixel); // now write the pixel at the coords_x, coords_y position
// while(coords_cur_x <= (coords_x + coords_area))
// {
// pixel_to_bmap(canvas,coords_cur_x, coords_cur_y,pixel);
// coords_cur_y += 1;
// if(coords_cur_y > (coords_y + coords_area))
// {
// coords_cur_x += 1;
// coords_cur_y = coords_y - coords_area;
// }
// }
bmap_unlock(canvas); // unlock the bitmap now
bmap_to_mipmap(canvas);
// }
wait(1);
}
}
function main()
{
level_load(NULL);
camera.z = 30;
camera.tilt = -90;
ent_create("cube_black.mdl", vector(0,0,0), get_snow);
snowing();
}
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Re: snowing
[Re: Pappenheimer]
#348241
11/24/10 12:18
11/24/10 12:18
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Joined: Apr 2005
Posts: 4,506
Germany
fogman
Expert
|
Expert
Joined: Apr 2005
Posts: 4,506
Germany
|
The only thing that comes to my mind:
coords_x & coords_y is not initialized.
So at gamestart they can theoretically hold any number.
Maybe try this:
var coords_x = 0;
var coords_y = 0;
no science involved
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Re: snowing (pixel_to_bmap problem)
[Re: Pappenheimer]
#348287
11/24/10 19:16
11/24/10 19:16
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Joined: Apr 2005
Posts: 4,506
Germany
fogman
Expert
|
Expert
Joined: Apr 2005
Posts: 4,506
Germany
|
Are you really sure?
The manual @ ent_create: "The given action will start immediately after creation"
But coords_x & coords_y get their values afterwards,
because you are calling "snowing()" after the creation.
But itīs really a raw guess, not more.
no science involved
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Re: snowing (pixel_to_bmap problem)
[Re: Pappenheimer]
#348288
11/24/10 19:23
11/24/10 19:23
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Joined: Jul 2007
Posts: 959
nl
flits
User
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User
Joined: Jul 2007
Posts: 959
nl
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the problem is i gues that you paint on a pixel that is lower then0 or higher then amount of pixel of the bmap that wil result into a crash
"empty"
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Re: snowing (pixel_to_bmap problem)
[Re: flits]
#348297
11/24/10 20:00
11/24/10 20:00
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Joined: Sep 2003
Posts: 5,900
Bielefeld, Germany
Pappenheimer
OP
Senior Expert
|
OP
Senior Expert
Joined: Sep 2003
Posts: 5,900
Bielefeld, Germany
|
flits is right. I found that hint in this thread Pixelwerte??? Here is the working code:
#include <litec.h>
#include <d3d9.h>
#include <acknex.h>
#include <default.c>
#define PRAGMA_ZERO
BMAP* canvas;
var format;
var pixel;
var coords_x = 0;
var coords_y = 0;
function snowing()
{
while(1)
{
c_trace(vector(random(30)-15,random(30)-15, 100), vector(random(30)-15,random(30)-15, -100), IGNORE_PASSABLE | IGNORE_ME | SCAN_TEXTURE | ACTIVATE_SHOOT);
wait(1);
}
}
function snowEvent()
{
coords_x = hit.u1;
coords_y = hit.v1;
}
action get_snow()
{
var coords_area = 4;
var coords_cur_x = coords_x - coords_area;
var coords_cur_y = coords_y - coords_area;
set(my, POLYGON);
my.emask |= ENABLE_SHOOT;
my.event = snowEvent;
while(1)
{
coords_cur_x = coords_x - coords_area*0.5;
coords_cur_y = coords_y - coords_area*0.5;
canvas = bmap_for_entity(my, 0); //1 is the number of the skin
format = bmap_lock(canvas, 0); // lock the canvas bitmap
pixel = pixel_for_vec(vector(255,255,255), 100, format);
pixel_to_bmap(canvas, coords_x, coords_y, pixel); // now write the pixel at the coords_x, coords_y position
while(coords_cur_x <= (coords_x + coords_area))
{
if((coords_cur_x < canvas.width ) && (coords_cur_y < canvas.height))
{
if((coords_cur_x > 0) && (coords_cur_y > 0))
{
pixel_to_bmap(canvas,coords_cur_x, coords_cur_y,pixel);
}
}
coords_cur_y += 1;
if(coords_cur_y > (coords_y + coords_area))
{
coords_cur_x += 1;
coords_cur_y = coords_y - coords_area;
}
}
bmap_unlock(canvas); // unlock the bitmap now
bmap_to_mipmap(canvas);
wait(1);
}
}
function main()
{
level_load(NULL);
camera.z = 30;
camera.tilt = -90;
ent_create("cube_black.mdl", vector(0,0,0), get_snow);
snowing();
}
This was the required addition:
if((coords_cur_x < canvas.width ) && (coords_cur_y < canvas.height))
{
if((coords_cur_x > 0) && (coords_cur_y > 0))
{
[...]
}
}
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resolved and result: snowing (pixel_to_bmap)
[Re: Pappenheimer]
#348321
11/24/10 23:21
11/24/10 23:21
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Joined: Sep 2003
Posts: 5,900
Bielefeld, Germany
Pappenheimer
OP
Senior Expert
|
OP
Senior Expert
Joined: Sep 2003
Posts: 5,900
Bielefeld, Germany
|
I changed the code a bit. Now a function cycles through all given entities of a level to add the polygon flag and the snow event. Just in case that someone can use this, here is a small demo with the script included: snowing demo Thanks for your interest and help! 
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