Thread: Allegro sprite animation?

  1. #1
    Registered User godly 20's Avatar
    Join Date
    Jan 2011

    Question Allegro sprite animation?

    Ok so this is the image which contains all possible movements:
    And this is the code that moves the sprite:
    if(key [KEY_LEFT]) x-=1 ; //walks left
                if((key [KEY_LEFT]) && (key [KEY_R])) x-=2; //runs left
                if(key [KEY_RIGHT]) x+=1; // walks right
                if((key [KEY_RIGHT]) && (key [KEY_R])) x+=2; //runs right     
                if(key [KEY_DOWN]) y+=1; //walks down
                if((key [KEY_DOWN]) && (key [KEY_R])) y+=2; //runs down       
                if(key [KEY_UP]) y-=1; // walk up
                if((key [KEY_UP]) && (key [KEY_R])) y-=2; //runs up
    How can i make it do the right animation? Please HELP!!
    Last edited by godly 20; 01-20-2011 at 09:54 AM.

  2. #2
    The Dragon Reborn
    Join Date
    Nov 2009
    Dublin, Ireland
    Have you read this:

    I will have a look myself at how to do it meanwhile.

    I think you need to have all the possible movements in separate frames
    Last edited by Eman; 01-20-2011 at 10:15 AM.
    You ended that sentence with a preposition...Bastard!

  3. #3
    and the hat of int overfl Salem's Avatar
    Join Date
    Aug 2001
    The edge of the known universe
    I'm assuming that you can blit out of a portion of the bitmap?

    When you load your character bitmap, set up a struct something like this
    #define NUM_DIRECTIONS 4
    #define NUM_POSES 4
    struct character_anim {
        int x, y, w, h;
    You'll be repeating the centre pose, by drawing 1, 2, 3, 2

    When you're actually moving, add this
    if((key [KEY_LEFT]) && (key [KEY_R])) {
        pose = ( pose + 1 ) % NUM_POSES;
        dirn = 0;
    When you've moved, simply blit out from anim[dirn][pose]
    If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
    If at first you don't succeed, try writing your phone number on the exam paper.

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