SpritesMind.Net

Posted: **Mon Sep 26, 2016 8:10 pm**

Right ok so I can get a block of tiles to scroll off screen but not on! What am I missing?

Could someone show me an example?

void processStartScreen() {
    switch(GameVariables.StartScreenStage) {
    case 0:
        SYS_disableInts();
        VDP_drawText("Press Start", 1, 0);
        SYS_enableInts();
        SYS_disableInts();
        VDP_drawImageEx(PLAN_B, &title_layout, TILE_ATTR_FULL(PAL1, FALSE, FALSE, FALSE, ind), 153, 26, TRUE, TRUE);
        nextvpos = 0;
        GameVariables.StartScreenStage = 1;
        SYS_enableInts();
    break;
    case 1:
        nextvpos++;
        SYS_disableInts();
        VDP_setVerticalScroll(PLAN_B, nextvpos);
        SYS_enableInts();
    break;
    }
}

Posted: **Mon Sep 26, 2016 8:12 pm**

Okay this code works now

but is there a better way to do it?

Posted: **Tue Sep 27, 2016 8:32 am**

I don't really understand what you mean by " get a block of tiles to scroll off screen but not on!" ?
VDP_setVerticalScroll(..) or VDP_setHorizontalScroll(..) are the methods to use for hardware scrolling, you can use positives or negatives values depending how you want to scroll you plan. If you scroll all over the plan size then you might refresh part of your plan which is currently off screen.

Posted: **Wed Sep 28, 2016 10:07 am**

I was struggling with whether the measure was in tiles or pixels!

Posted: **Wed Sep 28, 2016 12:00 pm**

So i guess you realized they are in pixels

SpritesMind.Net

Scrolling object on screen in scroll plan

Scrolling object on screen in scroll plan

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Re: Scrolling object on screen in scroll plan

Re: Scrolling object on screen in scroll plan

Re: Scrolling object on screen in scroll plan