Ragdoll Invader's Port to C

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Caleb_J
Expert (Posts: 683)

Ragdoll Invader's Port to C
19 Aug 2017 11:16:59 am

So, I really like playing this game. It's called Ragdoll Invaders.

What I plan to do is start with a simplified version, and get more complicated from there.

First step: Generate the sprites for it.

Anyone have any suggestions for that?

While I wait for that, I will post how I will do the AI routines.

Their movement is simple enough-every few seconds, pick a new direction to go in. For their attacks, though... For the first one, it's easy enough. Just shoot towards where you currently are. Something like:

Code:




If P>=2 //a timer that determines when to attack


A->X //A and B is your current position, and X and Y are where it's going to shoot.


B->Y

There's the beginning of the AI code.

As for movement:

Code:




randInt(1,3)->Z


L1(1)+Z->Z


L1(2)-Z->Z

I'll have to make some more code, like have a chance that Z can be negative, so it can move in more than 1 direction, and I'll have to put in some screen bounds, so it won't go past the screen edge. Shouldn't be too hard for that.

Thoughts? Questions? Comments?

EDIT:
Code so far:

Code:

#include <stdbool.h>


#include <stddef.h>


#include <stdint.h>


#include <tice.h>


#include <math.h>


#include <stdio.h>


#include <stdlib.h>


#include <string.h>


#include <graphx.h>





int a; // makes the integers that will, for now, be the x and y coords for the first sprite


int b;


int screenBoundSprite1;


int screenBoundSprite2;


int screenBoundSprite3;

Battlesquid
Power User (Posts: 323)

19 Aug 2017 12:36:03 pm

This is an interesting game! Will you be able to handle shooting in multiple directions? Other than that, this seems like it will be a cool game. Keep it up! Very Happy

123outerme
1
Power User (Posts: 449)

19 Aug 2017 01:14:45 pm
Last edited by 123outerme on 01 Oct 2017 05:39:31 pm; edited 1 time in total

Sounds great! Just a small suggestion; I'm assuming L1(1) and L1(2) are your enemy's X and Y coordinates, so shouldn't

Code:

randInt(1,3)->Z


L1(1)+Z->Z


L1(2)-Z->Z

be

Code:

randInt(1,3)->Z


L1(1)+Z->L1(1)


L1(2)+Z->L1(2)

And then further optimization for space (only saves a few bytes, but those bytes count):

Code:

randInt(1,3->Z


Z+L1(1->L1(1


Z+L1(2->L1(2

EDIT: Realized this is a C topic, so a little off-topic optimization rant Razz

CodertheBarbarian
Member (Posts: 126)

19 Aug 2017 01:47:26 pm

Hey,
Just another suggestion. It's usually helpful in programming languages that let you choose variable names (rip TI-BASIC) to choose meaningful variables from the beginning.

Ex. Change var names a and b to sprite1x, sprite1y.

Caleb_J
Expert (Posts: 683)

19 Aug 2017 05:07:00 pm

Coder: I know, which is why I'm doing this in C.

Battlesquid: For right now, no. Although, once I do get everything else down, I do have an idea about that, but it'll be a bit complicated. Currently, I was thinking of using the number keys for shooting, not entirely unlike what Portal Returns does for shooting the portals.

123outerme: Thanks for the optimizations; I was also thinking of just letting them bounce off the walls and a invisible platform near the bottom.

Thanks for the feedback, guys! Hopefully I can get some code up and running later this weekend. Or perhaps generate a few sprites.

EDIT: I can't run ConvPNG; my computer won't let me. Is anyone here willing to convert a few images so that I can generate my sprites?

In the meanwhile, I can write code.

To-do list:

Figure out movement
Write enemy routines for moving
Figure out shooting
Powerups
Gravity (because the character is affected by it and so is some enemy projectiles)

Movement code thus far:

Code:

while ((key = os_GetCSC()) != sk_Clear) {


        if(key == sk_Up)


            sprite1y+=10;


        if(key == sk_Down)


            sprite1y-=10;


        if(key == sk_Left)


            sprite1x-=10;


        if(key == sk_Right)


            sprite1x+=10;


    }

Though how I make the sprite follow these I have no idea.

iPhoenix
3
friendly neighborhood site admin (Posts: 1918)

20 Aug 2017 09:03:00 am

This is really cool, and making me want to get back into learning C for the ~~3rd~~ ~~4th~~ ~~5th~~ 6th time

Caleb_J
Expert (Posts: 683)

21 Aug 2017 09:40:13 am

Phoenix: Why not?

So, anyone have any idea on how to display a sprite? I have no idea on how to work with sprites.

Of course, I could pull a TI-basic trick and use pixels to illustrate the sprite.

What do you guys think? Should I actually make a sprite, or just use pixel art for now?

Speaking of pixel art, I was thinking of doing this:

Code:

Pixel-On(X,Y)


Pixel-On(X+1,Y-1)

Should I do that? Or would it slow down the framerate too much? because for this to properly work, I need a decently high framerate.

EDIT:

Current state of code is here.

Caleb_J
Expert (Posts: 683)

25 Aug 2017 12:36:13 pm

Update:

For now, I'll do the method I mentioned above. Until I get to understand the sprite routines, at least.

I should have some code by the end of the weekend, but I'm not sure, as my weekend is packed with things.

Code for movement thus far:

Code:

#include <stdbool.h>


#include <stddef.h>


#include <stdint.h>


#include <tice.h>


#include <math.h>


#include <stdio.h>


#include <stdlib.h>


#include <string.h>


#include <graphx.h>


int sprite1x = 100; // makes the global integers that will, for now, be the x and y coords for the first sprite


int sprite1y = 100;


int key;


void main()


{


gfx_Begin();


    while ((key = os_GetCSC()) != sk_Clear) {


        if(key == sk_Up)


            sprite1y+=2;


        if(key == sk_Down)


            sprite1y-=2;


        if(key == sk_Left)


            sprite1x-=2;


        if(key == sk_Right)


            sprite1x+=2;


    gfx_SetColor(gfx_black);


        gfx_SetPixel(sprite1x,sprite1y); //start of display for character sprite. NOTE: It will not look anything at all like a ragdoll man.


    }





}

Battlesquid wrote:

This is an interesting game! Will you be able to handle shooting in multiple directions? Other than that, this seems like it will be a cool game. Keep it up! Very Happy

Yes, I believe so. But you won't be able to shoot in more than one direction at a time.

Caleb_J
Expert (Posts: 683)

18 Sep 2017 02:18:25 pm

UPDATE:

I am still working on this, and the sprite is almost finished. It looks ridiculous though, like a pirate ship wheel.

I'll try to post screenies later.

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