wall bouncing
- Thread starter rafhot
- Start date
Wall bouncing is actually quite simple, and you can apply the same principal to obstacles, screen edge and so on. Here's a function I wrote some time ago, and also has some examples of AI wall climbing. It's a bit outdated and you'll need to adapt some of the code to your module, but does exactly what you ask.
Code:
#include "data/scripts/vars/constants.h" //http://www.caskeys.com/dc/?p=1314#constants
#import "data/scripts/com/ani0009.h" //http://www.caskeys.com/dc/?p=1314#ani0009
#import "data/scripts/com/dama0001.h" //http://www.caskeys.com/dc/?p=1314#dama0001
#import "data/scripts/com/bind0008.h" //http://www.caskeys.com/dc/?p=1314#bind0008
void wall0001()
{
/*
wall0001
Damon Vaughn Caskey
2009_10_10
~2011_07_22
Primary wall function. Damages and bounces self in opposite direction of current
X velocity when falling and obstructed by wall/platform.
*/
void vSelf = getlocalvar("self"); //Calling entity.
int iFall = getentityproperty(vSelf, "aiflag", "falling"); //Falling flag.
int iDamage = 0; //Damage to apply on self.
void vOpponent; //Last interaction.
int iDir; //Facing setting.
float iXDir = 0.0; //Current X velocity.
float iXVel = 0.0; //Set X velocity.
float iYVel = 0.0;
int iAni; //Current animation.
int iType; //Entity type.
int iWHt; //Wall height.
int iBase; //Current base.
int iITime = 0+getentityproperty(vSelf, "invinctime");
int iETime = openborvariant("elapsed_time");
if (iFall && iITime < iETime) //Falling and no invinctime?
{
iXDir = getentityproperty(vSelf, "xdir"); //Get current X velocity.
vOpponent = getentityproperty(vSelf, "opponent"); //Get last interaction.
changeentityproperty(vSelf, "invinctime", iITime+20+iETime);
if (iXDir >= 0) //Moving Right?
{
iDir = 2; //Set facing right.
iXVel = (-iXDir) * 0.5; //Set movement left.
iYVel = iXDir * 1.5;
iDamage += (iXDir * 3); //Set damage (Velocity * 3).
}
else //Moving left.
{
iDir = -2; //Set facing left.
iXVel = (-iXDir) * 0.5; //Set movement right.
iYVel = (-iXDir) * 1.5;
iDamage += ((-iXDir) * 3); //Set damage (Resigned velocity * 3).
}
bind0008("hith", "hith", 0, 1, 0, 0, 0, 0, 0, 0, 1); //Spawn flash.
dama0001(vSelf, iDamage, 100, ATK_1, iDir, 0, 0, 0, 0, 0, 0); //Apply damage to self.
changeentityproperty(vSelf, "animation", A_FALL); //Reset fall.
tossentity(vSelf, iYVel, iXVel, 0); //Toss self.
}
}
/*
else
{
iType = getentityproperty(vSelf, "type"); //Get type.
if (iType == TYPE_NPC || iType == TYPE_ENEMY) //Enemy or NPC?
{
iBase = getentityproperty(vSelf, "base"); //Get base.
iWHt = getlocalvar("height"); //Get wall height.
if (iWHt - iBase < 75) //Not too high to jump?
{
iAni = getentityproperty(vSelf, "animationid"); //Get current animation.
if (iAni == A_UP) //Walking up?
{
changeentityproperty(vSelf, "velocity", 0,0,0); //Stop walking movement.
ani0009(vSelf, AC_CLIMBUPB, 0); //Perform Lateral climb/jump up.
}
else if (iAni == A_DOWN) //Walking down?
{
changeentityproperty(vSelf, "velocity", 0,0,0); //Stop walking movement.
ani0009(vSelf, AC_CLIMBDNB, 0); //Perform Lateral climb/jump down.
}
}
}
}
*/