Scorpion Engine

[earok]

Hey Bubba N Stix, that's looking really cool.

You're right about the non-repeating pattern, Core seem to have come up with a way of using a single sprite to create a parallax across the whole screen. I might need to investigate their technique to see if I can copy it.

[Bubba'n'Stix 2]

I think that they had to sacrifice all other parallax lines to be able to make one that is screen wide.
I suppose they sort of rounded them all up on just one horizontal line.

Level 01 and 04 are also interesting examples of the trick.


I always wondered why they hadn't used more colors in the background but they probably didn't have a choice, that which sucks because one screen wide three colors parallax would have been awesome, even if limited in height.


I'd be very interested in knowing how they did that because it opens up a few possibilities.
And it's also very interesting.

[Samurai_Crow]

Originally Posted by earok

Hey Bubba N Stix, that's looking really cool.

You're right about the non-repeating pattern, Core seem to have come up with a way of using a single sprite to create a parallax across the whole screen. I might need to investigate their technique to see if I can copy it.

My guess is that they write to the sprite with the copper. It doesn't use the sprite DMA but limits the parallax layer to one bitplane because that's all the time left between the horizontal sprite mux moving the sprite right every 16 pixels. It also might not have time if a 5th bitplane is active on the display DMA.

[Bubba'n'Stix 2]

New thing made with the Scorpion Engine.
I wanted to try:


- The copper
- Half-Bright Mode
- Projectiles


While remaining on A500 config, even though if I do something serious at some point, I'll probably take the ease of AGA


[ Show youtube player ]

[Bubba'n'Stix 2]

I'm stuck here.

I'd like to have the enemy be "pushed back" when "shot" then "stop moving"
"play death animation" and then get "destroyed actor."

And here's what I get

[ Show youtube player ]

My code is:
Destroy projectile
Push actor by 5x total pixels over 2 frames (prevent normal movement)
Set direction for actor to stop_moving
If actor _var1== 1 then...
Play A_death_g on actor from frame 0
Yield for 70 frames (1,4 frames) (interrupt level on Timer) then continue
End continue
Destroy actor

The enemies pattern of movement is CPU simple movement. I've tried another with similar results.
I've tried to put destroy actor at several places and never managed to get the death animation then the actor destroyed.
I've ticked and unticked (reset animation/movement) in the destroy box.
I've managed to destroy the enemies but without the death animation, they would just pop off. But as soon as I use the animation, they respawn.

If anybody has a clue, it'd be very welcome.

[UltraNarwhal]

Originally Posted by Bubba'n'Stix 2

My code is:
Destroy projectile
Push actor by 5x total pixels over 2 frames (prevent normal movement)
Set direction for actor to stop_moving
If actor _var1== 1 then...
Play A_death_g on actor from frame 0
Yield for 70 frames (1,4 frames) (interrupt level on Timer) then continue
End continue
Destroy actor

Try
Destroy projectile
Push actor by 5 x total pixels over 2 frames (prevent normal movement)
Set direction for actor to stop_moving
If actor _var1== 1 then...
Play A_death_g on actor from frame 0
End

Rather than having a yield while playing death anim and destroying, use a destroy actor event in the death anim on finish.

Also your pushing code currently only works from the left side, it'll pull enemy from right. You could put in your projectile on Timer code for it to set projectile_var1 to its current speed every 10 frames.

Then the code would be (if it moves too much you can divide speed with projectile_var1 / )

Push actor by projectile_var1 pixels over 2 frames (prevent normal movement)
Destroy projectile
Set direction for actor to stop_moving
If actor _var1== 1 then...
Play A_death_g on actor from frame 0
End

[Bubba'n'Stix 2]

"Rather than having a yield while playing death anim and destroying, use a destroy actor event in the death anim on finish."
Ho my god ! I could cry ! My main character can now kill his enemies ! Finally.

"Set direction for actor to stop moving" still didn't work but I put "prevent movement" in the death animation and it worked.
My Robot can now shoot the green slugs.

Thank you !!!

[Bubba'n'Stix 2]

I didn't understand this:
"Also your pushing code currently only works from the left side, it'll pull enemy from right. You could put in your projectile on Timer code for it to set projectile_var1 to its current speed every 10 frames."

I haven't gotten into adapting the enemies to left and right attacks.
But your directions improved a lot of things already:
[ Show youtube player ]


Sadly, I'm using too much ram for the A500 1mo now.
I think the two wav sounds use a lot.

[UltraNarwhal]

Originally Posted by Bubba'n'Stix 2

Sadly, I'm using too much ram for the A500 1mo now.
I think the two wav sounds use a lot.

For wav sounds I convert them in Audacity by Truncating Silence and resampling them to 11025hz, reduced a 160kb wav to 3kb.

[Bubba'n'Stix 2]

Ok, thank you.
I had trimmed the silence in another program but downgrading the quality to 11khz allowed the game to work again on A500 1mo config.