mirror of
https://github.com/ddnet/ddnet.git
synced 2024-11-10 18:18:18 +00:00
70 lines
1.2 KiB
C++
70 lines
1.2 KiB
C++
#include <baselib/system.h>
|
|
#include <baselib/vmath.h>
|
|
#include <baselib/math.h>
|
|
#include "../engine/interface.h"
|
|
#include "mapres_col.h"
|
|
#include "mapres.h"
|
|
|
|
using namespace baselib;
|
|
|
|
/*
|
|
Simple collision rutines!
|
|
*/
|
|
struct collision
|
|
{
|
|
int w, h;
|
|
unsigned char *data;
|
|
};
|
|
|
|
static collision col;
|
|
static int global_dividor;
|
|
|
|
int col_init(int dividor)
|
|
{
|
|
mapres_collision *c = (mapres_collision*)map_find_item(MAPRES_COLLISIONMAP,0);
|
|
if(!c)
|
|
{
|
|
dbg_msg("mapres_col", "failed!");
|
|
return 0;
|
|
}
|
|
col.w = c->width;
|
|
col.h = c->height;
|
|
global_dividor = dividor;
|
|
col.data = (unsigned char *)map_get_data(c->data_index);
|
|
return col.data ? 1 : 0;
|
|
}
|
|
|
|
int col_check_point(int x, int y)
|
|
{
|
|
int nx = x/global_dividor;
|
|
int ny = y/global_dividor;
|
|
if(nx < 0 || nx >= col.w || ny >= col.h)
|
|
return 1;
|
|
|
|
if(y < 0)
|
|
return 0; // up == sky == free
|
|
|
|
return col.data[ny*col.w+nx];
|
|
}
|
|
|
|
// TODO: rewrite this smarter!
|
|
bool col_intersect_line(vec2 pos0, vec2 pos1, vec2 *out)
|
|
{
|
|
float d = distance(pos0, pos1);
|
|
|
|
for(float f = 0; f < d; f++)
|
|
{
|
|
float a = f/d;
|
|
vec2 pos = mix(pos0, pos1, a);
|
|
if(col_check_point((int)pos.x, (int)pos.y))
|
|
{
|
|
if(out)
|
|
*out = pos;
|
|
return true;
|
|
}
|
|
}
|
|
if(out)
|
|
*out = pos1;
|
|
return false;
|
|
}
|