Better way of doing this? Facing the mouse

[Hblade]

Code: Select all

char *key=GetKeyState();
angle=direction(xscreen, yscreen, xmouse, ymouse);

switch(mov) {
    case 0: // not walking
        if(angle>=-145&&angle<45) {
            ChangeAnimation("Event Actor", "standRight", NO_CHANGE);
                              }
        if(angle>=45&&angle<145) {
            ChangeAnimation("Event Actor", "standUp", NO_CHANGE);
                              }
        if(angle>=145&&angle<245) {
            ChangeAnimation("Event Actor", "standLeft", NO_CHANGE);
                              }
        if(angle>=245&&angle<345) {
            ChangeAnimation("Event Actor", "standDown", NO_CHANGE);
                              }
    break;
    case 1: //moving
         if(angle>=-145&&angle<45) {
            ChangeAnimation("Event Actor", "walkRight", NO_CHANGE);
                              }
        if(angle>=45&&angle<145) {
            ChangeAnimation("Event Actor", "walkUp", NO_CHANGE);
                              }
        if(angle>=145&&angle<245) {
            ChangeAnimation("Event Actor", "walkLeft", NO_CHANGE);
                              }
        if(angle>=245&&angle<345) {
            ChangeAnimation("Event Actor", "walKDown", NO_CHANGE);
                              }
    break;
            }
if(key[KEY_d]==1 || key[KEY_a]==1 || key[KEY_s]==1 || key[KEY_w]==1) {
    mov=1;
                                                                     }
else { mov=0; }

if(key[KEY_d]==1) {
    x+=5;
                  }
if(key[KEY_a]==1) {
    x-=5;
                  }
if(key[KEY_s]==1) {
    y+=5;
                  }
if(key[KEY_w]==1) {
    y-=5;
                  }


Can someone clean this up? I'd like to know a shorter and more effective way of doing this I'm trying to make an MMO-styled game, but different. The player always faces the direction the mouse is pointing but he only has 4 actually facing directions



EDIT!
I have edited the code on my side and figured it out Using calculator. It's slightly different but its still large, I'd still like to know if there is an easier way of doing this

[skydereign]

I believe I've mentioned this to you before. Essentially, you want 360 degrees to map to 4 values.
0 (-45 - 45)
1 (45 - 135)
2 (135 - 225)
3 (225 - 315)
Now, dividing 360/90 is 4 (where 4%4 is equal to 0). So we take our angle and divide it by 90, and then mod it by 4. This will get almost what you want, with a slight problem. If the angle is 359, integer division will not get what we want.
(359/90)%4
3%4
3
Meaning the player will be facing south (as 3 is the same as 270). To fix this, we can add 45 (this is like adding 0.5 to an integer to make it round properly).

Code: Select all

int mov = ((direction(xscreen, yscreen, xmouse, ymouse)+45)/90)%4; // gets the direction you want

[Hblade]

thanks sky.