※ Danmakufu Q&A/Problem thread 3 ※

[Zinochan]

I've read your tutorials, and merged both the Item Task and Item Const in a single script, and made some code to apply my tasks and item collection with events, as seen here, but my item graphics are not appearing (but the "out" is).

Discovered the bug, but I can't fix it.
It happens when I set the item as a variable like:

Code: [Select]

let obj = CreateItemU1(things);
How can I fix it?

[JDude :3]

How can I make bullet trails?

[Zinochan]

How can I make bullet trails?

I've seen a example of the kind of code that you want here.
You maybe will have to see some post before this one.

[Drake]

Oh, random question. How the heck do I put a backslash in a char? '\' escapes the close ', '\\' throws an exception for being too long to go in a char, and let temp="\\"; temp[0] throws an exception as well.

Code: [Select]

"\\ "[0] ?
lol
If you need it for comparison purposes or something you can also cast characters into integers by char+0.

Discovered the bug, but I can't fix it.
It happens when I set the item as a variable like:

Code: [Select]

let obj = CreateItemU1(things);
How can I fix it?

Code: [Select]

ObjRender_SetScaleXYZ(obj,0.1,0.1,0)You set the z-scale for everything to 0 which like any other dimension makes it 0 length. It should be 1.
It only "bugs" when you assign the ID to a variable because otherwise the function doesn't act on it, of course.

Also you have a heck of a lot of code duplication.  You could very easily make it a lot more compact with

Code: [Select]

task SpawnItem(type,x,y,score,delay){
    loop(delay){yield;}
    let h1 = 0;
    let obj = CreateItemU1(type,x,y,score);
    let objRZAngle = ObjRender_GetAngleZ(obj);
    let objRYAngle = ObjRender_GetAngleY(obj);
    let objRXAngle = ObjRender_GetAngleX(obj);
    ObjRender_SetScaleXYZ(obj,0.1,0.1,1);
    ascent(i in 0..60){
        ObjRender_SetAngleZ(obj,objRZAngle+i*720/60+12);
        ObjRender_SetScaleXYZ(obj,(1.7/30)*i/2,(1.7/30)*i/2,1);
        yield;
    }
    loop{
        yield;
        ObjRender_SetAngleY(obj,objRYAngle+h1*6);
        h1++;
    }
}
// and then optionally
function SpawnLife(x,y,score,delay){
    SpawnItem(ITEM_LIFE_B,x,y,score,delay);
}
function SpawnSpell(x,y,score,delay){
    SpawnItem(ITEM_SPELL_B,x,y,score,delay);
}
// etc


[Zinochan]

Code: [Select]

ObjRender_SetScaleXYZ(obj,0.1,0.1,0)You set the z-scale for everything to 0 which like any other dimension makes it 0 length. It should be 1.
It only "bugs" when you assign the ID to a variable because otherwise the function doesn't act on it, of course.

Also you have a heck of a lot of code duplication.  You could very easily make it a lot more compact with

Code: [Select]

code


The bug was still in action when I do the let obj = CreateItemU1 OUTSIDE of the task, and when I change the Z-scale to 1, the outside of the stage(the frame) is turned to black.
Before I actually made a item script, I still had that bunch of tasks, and everything worked correctly. The problem started when I transferred the tasks into the item script.

[Drake]

and when I change the Z-scale to 1, the outside of the stage(the frame) is turned to black.

wat

Can you just upload your folder or something, this is too strange for me to speculate about.

[SusiKette]

I got this error message and I haven't found any place that explains what it means:

敵ライフを適切に返していません。(D:/th_dnh_ph3/script/test_script/Spell01.txt)

[Zinochan]

wat

Can you just upload your folder or something, this is too strange for me to speculate about.

Here

[SusiKette]

Never mind about my last post. Its not an issue for now. My next question is how do I store the shot id of the previously created shot?
Apparently this doesn't work.

Code: [Select]

CreateShotA1(BossX, BossY, 2, AimPlayer(), DS_BALL_S_RED, 10);
shot_id = return;


[Sparen]

Code: [Select]

let shot_id = CreateShotA1(BossX, BossY, 2, AimPlayer(), DS_BALL_S_RED, 10);
CreateShotA1 is a built-in function that returns an Integer (Object ID) as a return type. You can store this return value in a variable.

[SusiKette]

I guess I thought that using return; would be the value of the last thing a function returned.
My next question is that how you can make a bullet fly in a wavy motion? I know I need to use ObjMove_SetAngularVelocity(id, r);. I was hoping to make it so that the wavy motion started small and as the bullet travels further, the it would start waving further to each side.

[Zinochan]

I guess I thought that using return; would be the value of the last thing a function returned.
My next question is that how you can make a bullet fly in a wavy motion? I know I need to use ObjMove_SetAngularVelocity(id, r);. I was hoping to make it so that the wavy motion started small and as the bullet travels further, the it would start waving further to each side.

You can make a task that plays a descent loop, and make that the bullet have a angular velocity, then wait, then have the same angular velocity, but negative.
You can increase the "waving" motion with the descent loop variable, like this:

Code: [Select]

task Waving(obj){
descent(i in 0..100){//a really big number to make things to not stop waving(number of times the bullet will wave)
ObjMove_SetAngularVelocity(obj,i/10);
loop(180/(i/10)){yield;}
ObjMove_SetAngularVelocity(obj,i/-10);
loop(180/(i/10)){yield;}
}
}


[Enderswift117]

How would I add a sprite for a boss that is in a sprite sheet?

[Sparen]

I guess I thought that using return; would be the value of the last thing a function returned.
My next question is that how you can make a bullet fly in a wavy motion? I know I need to use ObjMove_SetAngularVelocity(id, r);. I was hoping to make it so that the wavy motion started small and as the bullet travels further, the it would start waving further to each side.

You should make the change angular velocity as well as the time between shifts dependent on time. I would have a descent loop that waits the number of frames in the loop constant, with the angular velocity likewise being dependent on the constant.

EDIT: Didn't realize there was already a code-based answer

How would I add a sprite for a boss that is in a sprite sheet?

What are you trying to do? If you have a sprite sheet and want to animate the boss, then you'll need to determine the dimensions of each sprite, then change the source rect in your Render Object depending on how much time has passed.

Below is an example the code I use. I have 4 128x128 sprites in a row that form the animation, and four states to represent idle/left/right/cast (the first row is idle, the second is left, etc). I've removed the cast/attack animation logic from the snippet below to make it shorter.

Code: [Select]

    let TDRAWSTATE_IDLE = 0;
    let TDRAWSTATE_LEFT = 1;
    let TDRAWSTATE_RGHT = 2;

    task TDrawLoop(path){
        let animframe = 1;
        let movestate = TDRAWSTATE_IDLE;
        ObjPrim_SetTexture(objBoss, path);
        ObjRender_SetScaleXYZ(objBoss, 1, 1, 1);
        let bossAngle = ObjMove_GetAngle(objBoss);
        let bossSpeed = ObjMove_GetSpeed(objBoss);
        ObjSprite2D_SetSourceRect(objBoss, 0, 0, 128, 128);
        ObjSprite2D_SetDestCenter(objBoss);
        while(!Obj_IsDeleted(objBoss)){
            bossAngle = ObjMove_GetAngle(objBoss) % 360;
            bossSpeed = ObjMove_GetSpeed(objBoss);

            if(bossSpeed > 0){ //below three cases require if statement to prevent reset of animframe.
                if((bossAngle > 270 || bossAngle < 90) && movestate != TDRAWSTATE_RGHT){
                    movestate = TDRAWSTATE_RGHT;
                    animframe = 0;
                }else if((bossAngle > 90 && bossAngle < 270) && movestate != TDRAWSTATE_LEFT){
                    movestate = TDRAWSTATE_LEFT;
                    animframe = 0;
                }else if((bossAngle == 90 || bossAngle == 270) && movestate != TDRAWSTATE_IDLE){
                    movestate = TDRAWSTATE_IDLE;
                    animframe = 0;
                }
            }else if(movestate != TDRAWSTATE_IDLE){ //if transitioning back to idle (speed = 0)
                movestate = TDRAWSTATE_IDLE;
                animframe = 0;
            }

            ObjSprite2D_SetSourceRect(objBoss, 0+floor(animframe/9)*128, 0 + 128*movestate, 128 + floor(animframe/9)*128, 128 + 128*movestate);

            animframe++;
            if(animframe >= 36){
                if(movestate == TDRAWSTATE_IDLE){ //animframe reset for idle
                    animframe = 0;
                }else{ //keep in current position if moving.
                    animframe = 35;
                }
            }
            yield;
        }
    }

Essentially, we have 128x128 sprites and the one we choose is dependent on animframe (9 frames per image, 4 images = 36 frames before we reset the idle animation). For my left and right movement, I keep the animation in the last image after the opening sequence plays, hence maintaining animframe at 35 at the end. If the boss is not moving, then they will not be kept in a movement state.

The line that handles choosing which sprite to use is the following:
ObjSprite2D_SetSourceRect(objBoss, 0+floor(animframe/9)*128, 0 + 128*movestate, 128 + floor(animframe/9)*128, 128 + 128*movestate);

floor(animframe/9)*128 represents which frame to use (first, second, third, or fourth) in the spreadsheet, while 128*movestate represents which animation to use (idle, left, right, or cast).

I hope this gives you a better sense of how to animate your sprite sheet.

[Enderswift117]

Yes that was exactly what i needed, thank you. This is going to sound like a dumb question ,but are the (path) parts referring to the path to the image or the TDRAWSTATES?

[Zinochan]

Yes that was exactly what i needed, thank you. This is going to sound like a dumb question ,but are the (path) parts referring to the path to the image or the TDRAWSTATES?

To the path to image.

[Zinochan]

And I have one more problem.
I have a function that spawns a enemy object like a bullet, and I can set the life, the angle, etc. like a bullet.
But when I set the life and shoot it, the life seems do not go down.
Here is the link to the functions.

[Mellow]

I'm having problem with finding my script in general.

I have a folder called "mine" in the scripts folder, and my .txt file script in "mine"
when i launch ph3, my .txt file doesn't show. i think i'm doing something wrong, but I don't know what...  :matsuriscowl:

[Arcvasti]

Do the bullets go through the enemy or stop at it?

[Zinochan]

Do the bullets go through the enemy or stop at it?

They stop.

[Drake]

Here

First, you write let obj = 0; and then proceed to manipulate obj. 0 is the ID of an object; it isn't just nothing! Use -1 if you want to use a dummy value for referencing objects. This is why you're getting the bad STG frame.

Second, the reason your stuff wouldn't work properly once you put the item object in the variable is because you have no MainLoop in the item script and therefore no yield in your MainLoop, so none of your tasks will progress.

Third, as a precaution using loop is bad here because there is no way to exit and so the tasks will live as long as the script does.

Here is a small rewrite, including the suggestion I made earlier (add a yielded MainLoop):

Code: [Select]

task SpawnItem(type, x, y, score, delay){
loop(delay){yield;}
let obj = CreateItemU1(type, x, y, score);
ascent(i in 0..60){
ObjRender_SetAngleZ(obj, 2*(720/60)*i);
ObjRender_SetScaleXYZ(obj, 0.1+(0.9/60)*i, 0.1+(0.9/60)*i, 1);
yield;
}
ObjRender_SetAngleZ(obj, 0);
ObjRender_SetScaleXYZ(obj, 1, 1, 1);
let h1 = 0;
while(!Obj_IsDeleted(obj)){
ObjRender_SetAngleY(obj, h1*6);
h1++;
yield;
}
}
function SpawnLife(x, y, score, delay){
SpawnItem(ITEM_LIFE_B, x, y, score, delay);
}
function SpawnLifePiece(x, y, score, delay){
SpawnItem(ITEM_LIFE_B_P, x, y, score, delay);
}
function SpawnSpell(x, y, score, delay){
SpawnItem(ITEM_SPELL_B, x, y, score, delay);
}
function SpawnSpellPiece(x, y, score, delay){
SpawnItem(ITEM_SPELL_B_P, x, y, score, delay);
}
You could then also trim your event cases with

Code: [Select]

case(EV_USER+1000){ // Spawn Item event
let args = GetEventArgument(0);
SpawnItem(args[0], args[1], args[2], args[3], args[4]); // type, x, y, score, delay
}


[Drake]

And I have one more problem.
I have a function that spawns a enemy object like a bullet, and I can set the life, the angle, etc. like a bullet.
But when I set the life and shoot it, the life seems do not go down.
Here[url] is the link to the functions.

The delete-when-0-life task just checks once and then immediately ends. Should be

Code: [Select]

task DeleteEnemyWhenLife0(obj){
while(ObjEnemy_GetInfo(obj,INFO_LIFE) > 0){ yield; }
Obj_Delete(obj);
}

[SusiKette]

You can make a task that plays a descent loop, and make that the bullet have a angular velocity, then wait, then have the same angular velocity, but negative.
You can increase the "waving" motion with the descent loop variable, like this:

Code: [Select]

task Waving(obj){
descent(i in 0..100){//a really big number to make things to not stop waving(number of times the bullet will wave)
ObjMove_SetAngularVelocity(obj,i/10);
loop(180/(i/10)){yield;}
ObjMove_SetAngularVelocity(obj,i/-10);
loop(180/(i/10)){yield;}
}
}


The bullet is doing a wavy motion, but its I don't see a change in the interval the motion is reversed. I tried changing the values but I'm not able to get it to work that way either.

[JDude :3]

Still having problems with multi phased nonspells/spells, it doesn't work....
Here is a part of my script

[CrestedPeak9]

Still having problems with multi phased nonspells/spells, it doesn't work....
Here is a part of my script

I see literally nothing in that script that compares boss health against a constant except for preventing 0,0 spawning...

[JDude :3]

I see literally nothing in that script that compares boss health against a constant except for preventing 0,0 spawning...

I don't get it, what should I do?

[Zinochan]

First, you write let obj = 0; and then proceed to manipulate obj. 0 is the ID of an object; it isn't just nothing! Use -1 if you want to use a dummy value for referencing objects. This is why you're getting the bad STG frame.

Second, the reason your stuff wouldn't work properly once you put the item object in the variable is because you have no MainLoop in the item script and therefore no yield in your MainLoop, so none of your tasks will progress.

Third, as a precaution using loop is bad here because there is no way to exit and so the tasks will live as long as the script does.

Here is a small rewrite, including the suggestion I made earlier (add a yielded MainLoop):

Code: [Select]

task SpawnItem(type, x, y, score, delay){
loop(delay){yield;}
let obj = CreateItemU1(type, x, y, score);
ascent(i in 0..60){
ObjRender_SetAngleZ(obj, 2*(720/60)*i);
ObjRender_SetScaleXYZ(obj, 0.1+(0.9/60)*i, 0.1+(0.9/60)*i, 1);
yield;
}
ObjRender_SetAngleZ(obj, 0);
ObjRender_SetScaleXYZ(obj, 1, 1, 1);
let h1 = 0;
while(!Obj_IsDeleted(obj)){
ObjRender_SetAngleY(obj, h1*6);
h1++;
yield;
}
}
function SpawnLife(x, y, score, delay){
SpawnItem(ITEM_LIFE_B, x, y, score, delay);
}
function SpawnLifePiece(x, y, score, delay){
SpawnItem(ITEM_LIFE_B_P, x, y, score, delay);
}
function SpawnSpell(x, y, score, delay){
SpawnItem(ITEM_SPELL_B, x, y, score, delay);
}
function SpawnSpellPiece(x, y, score, delay){
SpawnItem(ITEM_SPELL_B_P, x, y, score, delay);
}
You could then also trim your event cases with

Code: [Select]

case(EV_USER+1000){ // Spawn Item event
let args = GetEventArgument(0);
SpawnItem(args[0], args[1], args[2], args[3], args[4]); // type, x, y, score, delay
}


Oh, now I understand, and I don't get why your SpawnLife/Spell is a function. Can't it be a task?
And I've completely forgot about the MainLoop.
Now the code works correctly.
Thank you.

[Gregory]

I don't get it, what should I do?

you should write a more specific health check from the Boss that does something from A to B  and if it passes the 1st threshold it will do the next from B to C

Code: [Select]

while(ObjEnemy_GetInfo(enm,INFO_LIFE)>=7000){

yield;}

while(ObjEnemy_GetInfo(enm,INFO_LIFE)<=7000 && ObjEnemy_GetInfo(enm,INFO_LIFE)>= 4500){

yield;}



[Enderswift117]

I am trying to recreate something similar to Mokou's first non-spell, to create the rows of bullets would you use ascent loops and loose lasers or is there a better way to do that.

[JDude :3]

you should write a more specific health check from the Boss that does something from A to B  and if it passes the 1st threshold it will do the next from B to C

That's not what I want; what I'm looking for is nons/spells like this