OSlib collision problems for psp in C ++
I am using oslib with pspsdk toolchain and for some reason it doesn't work the way I think it
float spritewidth = sprite->stretchX;
float spriteheight = sprite->stretchY;
float bushwidth = bush->stretchX;
float bushheight = bush->stretchY;
//Basic border collision
if (sprite->x <= 0)
sprite->x = 0;
if (sprite->y <= 0)
sprite->y = 0;
if (sprite->x >= 455)
sprite->x = 455;
if (sprite->y >= 237)
sprite->y = 237;
//Bush
if ( (sprite->x + spritewidth > bush->x) &&
(sprite->x < bush->x + bushwidth) &&
(sprite->y + spriteheight > bush->y) &&
(sprite->y < bush->y + bushheight) )
{
bushcol = 1;
}
else
{
bushcol = 0;
}
if (osl_keys->held.down)
{
if (bushcol == 0)
{
sprite->y += 4;
sprite_position = DOWN;
SpriteAnimate();
}
else
{
sprite->y -= 6;
bushcol = 0;
}
}
if (osl_keys->held.up)
{
if (bushcol == 0)
{
sprite->y -= 4;
sprite_position = UP;
SpriteAnimate();
}
else
{
sprite->y += 6;
bushcol = 0;
}
}
if (osl_keys->held.right)
{
if (bushcol == 0)
{
sprite->x += 4;
sprite_position = RIGHT;
SpriteAnimate();
}
else
{
sprite->x -= 6;
bushcol = 0;
}
}
if (osl_keys->held.left)
{
if (bushcol == 0)
{
sprite->x -= 4;
sprite_position = LEFT;
SpriteAnimate();
}
else
{
sprite->x += 6;
bushcol = 0;
}
}
The sprite starts to move in the opposite direction from the bush when I try to get away, but eventually frees itself
any best methods or suggestions for collision
I even tried this for every button but no luck so far
if (osl_keys->held.down)
{
if ( (sprite->x + spritewidth > bush->x) &&
(sprite->x < bush->x + bushwidth) &&
(sprite->y + spriteheight > bush->y) &&
(sprite->y < bush->y + bushheight) )
{
sprite->y -= 4;
}
else
{
sprite->y += 2;
sprite_position = DOWN;
SpriteAnimate();
}
}
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One thing you can do, instead of having the character "move back" when they hit the bush, you can change their position.
What I mean is something like this: (for example only).
if (osl_keys->held.up)
{
if (bushcol == 0)
{
sprite->y -= 4;
sprite_position = UP;
SpriteAnimate();
}
else
{
sprite->y = bush->y + 2;
bushcol = 0;
}
}
That way, whenever the sprite collides, it just sets the position, instead, it moves it back.
There are other methods for collision detection, but I'm too tired now to pull off an intelligent, much less readable answer right now ... A google search will bring up a lot of results.
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