HELP! game structure using case's [SOLVED]

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Munkyears
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Posts: 47
Joined: Sat Mar 21, 2009 4:24 pm
Location: Sheffield, England

HELP! game structure using case's [SOLVED]

Post by Munkyears » Thu Sep 13, 2018 10:46 am

Hi Guys,

Apologies for repeated posts but i'm slowly learning my way SGDK & C.

I'm doing as much legwork as I can but I do need help with a few things.

I've structured my game (early WIP) by using cases however I'm having issues with it waiting for a joypad instruction.
Here is the code so far:

Code: Select all

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <genesis.h>
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <gfx.h>
#include <sprite.h>
#include <sound.h>
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#define GAME   2
#define TITLE  0
#define INTRO  1
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#define LINES 36
#define TILE  40
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static void handleInput();
static void joyEvent(u16 joy, u16 changed, u16 state);
static void introJoyEvent(u16 joy, u16 changed, u16 state); // Intro Trigger
static void gameJoyEvent(u16 joy, u16 changed, u16 state); // Game Trigger
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int gamestate = INTRO;
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
volatile int waitflag = FALSE;
int score = 0; // SCORE TRACKER FOR LATER
int main()
{
    u16 palette[64]; // DECLARE PALETTE
    u16 ind; //DECLARE IND
    SYS_disableInts();    // disable interrupt when accessing VDP
    VDP_setScreenWidth320();    // initialization
    JOY_setEventHandler(joyEvent);
    VDP_fadeIn(0, (4 * 16) - 1, palette, 20, FALSE);
    // set all palette to black
    VDP_setPaletteColors(0, (u16*) palette_black, 64);

    ///////////////////////////////////////////////////////////////////////////////////////////////////////////
    // prepare palettes
    memcpy(&palette[0], bgb_image.palette->data, 1024 * 2);
    memcpy(&palette[16], bga_image.palette->data, 32 * 2);
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////
    ///////////////////////////////////////////////////////////////////////////////////////////////////////////
    VDP_clearPlan(PLAN_A, TRUE);
    VDP_clearPlan(PLAN_B, TRUE);
    SYS_enableInts();

    while(TRUE)
    {
        switch(gamestate)
        {
        case TITLE:
		waitMs (400);
		SYS_disableInts();
        //Clear the A Plane to remove the logo and title screen text
        	VDP_clearPlan(PLAN_A, TRUE);
        	VDP_clearPlan(PLAN_B, TRUE);
       		VDP_drawImageEx(PLAN_A, &bga_image, TILE_ATTR_FULL(PAL1, FALSE, FALSE, FALSE, ind), 0, 0, FALSE, TRUE);
        	ind += bga_image.tileset->numTile;
        	SYS_enableInts();
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
        //gamestate = TITLE;
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
        waitMs (400);
        break;

      case GAME:
        //VDP_drawText("Score:", 0, 0);
        //VDP_waitVSync();
        //JOY_setEventHandler(gameJoyEvent);
        break;
////////////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////////////
      case INTRO:

        SYS_disableInts();
        JOY_init();
        waitMs (400);
        VDP_fadeIn(0, (4 * 16) - 1, palette, 20, FALSE);
        //VDP_fadeOut(0, 16, 30, FALSE);
        // load background
        ind = TILE_USERINDEX;
        VDP_drawImageEx(PLAN_B, &bgb_image, TILE_ATTR_FULL(PAL0, FALSE, FALSE, FALSE, ind), 0, 0, FALSE, TRUE);
        ind += bgb_image.tileset->numTile;
        //Main Menu Process
        ////////////////////////////////////////////////////////////////////////////////////////
        VDP_drawText("* Press START *", 8, 15);
        VDP_drawText("By Joseph Ioannou (53K70R)", 7, 25);
        VDP_drawText("(C) Ponyo - Studio Ghibli", 6, 26);
        VDP_waitVSync();
        JOY_setEventHandler(introJoyEvent);
        SYS_enableInts();
        break;
    }
 }
    return 0;
}


static void introJoyEvent(u16 joy, u16 changed, u16 state)
{
    // START button state changed
    if (changed & BUTTON_START)
    {
        //VDP_fadeOut(0, 16, 30, FALSE); //FADE TO BLACK

        gamestate = TITLE;
    }

    if (changed & state & (BUTTON_A | BUTTON_B | BUTTON_C))
    {


    }
}


static void joyEvent(u16 joy, u16 changed, u16 state)
{
    // START button state changed
    if (changed & BUTTON_START)
    {
        gamestate = TITLE;
    }

    if (changed & state & (BUTTON_A | BUTTON_B | BUTTON_C))
    {


    }
}
The rom loads, flashes 4 times (Rogue fade effects?) then immediately goes to GAME case which is just an image as a place holder.

I've setup joyevents as noted above however it doesnt seem to have any sort of effect when pressing start etc,

Any help would be great!! Thanks! :)

[UPDATE] I've noticed that when I use frame skip, it seems to wait for the instruction then moves to the next case so I'm wondering what I'm doing wrong?
Last edited by Munkyears on Thu Sep 13, 2018 10:31 pm, edited 1 time in total.
To be this good takes ages, To be this good takes Stef, Kanedafr, ChillyWilly & everyone who has helped me discover what hardwork is!

Dive into the SpritesMind! :)

Munkyears
Interested
Posts: 47
Joined: Sat Mar 21, 2009 4:24 pm
Location: Sheffield, England

Re: HELP! game structure using case's

Post by Munkyears » Thu Sep 13, 2018 11:11 am

Heres a link to the rom.bin incase anyone needs to look
https://www.dropbox.com/s/89a050pgpb3ibuw/rom.bin?dl=0
cheers!!
To be this good takes ages, To be this good takes Stef, Kanedafr, ChillyWilly & everyone who has helped me discover what hardwork is!

Dive into the SpritesMind! :)

Munkyears
Interested
Posts: 47
Joined: Sat Mar 21, 2009 4:24 pm
Location: Sheffield, England

Re: HELP! game structure using case's

Post by Munkyears » Thu Sep 13, 2018 10:31 pm

[UPDATE] Solved it! :)
To be this good takes ages, To be this good takes Stef, Kanedafr, ChillyWilly & everyone who has helped me discover what hardwork is!

Dive into the SpritesMind! :)

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