104 lines
1.6 KiB
C
Executable File
104 lines
1.6 KiB
C
Executable File
#include "box.h"
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#include "world.h"
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int sgn(int x)
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{
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if (x==0)
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return 0;
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else if (x>0)
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return 1;
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return -1;
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}
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static void move_x(box_t * b)
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{
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int sgn_vx=sgn(b->vx);
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if (sgn_vx)
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{
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for (int i=sgn_vx; i<=sgn_vx*b->vx; i++)
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{
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int previous_tested_y=-545;
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int type=CTG_EMPTY;
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for (int j=0; j<b->h; j++)
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{
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int t=(b->y+j)/8;
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if (t!=previous_tested_y)
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{
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previous_tested_y=t;
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int typetemp;
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if (sgn_vx>0)
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typetemp=world_get_ctg(b->x+b->w-1+i*sgn_vx,b->y+j);
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else
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typetemp=world_get_ctg(b->x+i*sgn_vx,b->y+j);
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if (typetemp==CTG_DEATH || typetemp==CTG_SOIL)
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{
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b->x+=(i-1)*sgn_vx;
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b->vx=0;
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return;
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}
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}
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}
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}
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b->x+=b->vx;
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}
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}
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static void move_y(box_t * b)
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{
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int sgn_vy=sgn(b->vy);
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if (sgn_vy)
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{
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for (int i=sgn_vy; i<=sgn_vy*b->vy; i++)
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{
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int previous_tested_x=-545;
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for (int j=0; j<b->w; j++)
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{
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int t=(b->x+j)/8;
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if (t!=previous_tested_x)
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{
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previous_tested_x=t;
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int typetemp;
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if (sgn_vy>0)
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typetemp=world_get_ctg(b->x+j ,b->y+b->h-1+i);
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else
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typetemp=world_get_ctg(b->x+j ,b->y-i);
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if (typetemp==CTG_DEATH || typetemp==CTG_SOIL)
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{
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b->y+=(i-1)*sgn_vy;
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b->vy=0;
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return;
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}
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}
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}
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}
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b->y+=b->vy;
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}
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b->vy-=b->gravity;
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}
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int box_move(box_t * b)
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{
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//velx
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move_x(b);
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move_y(b);
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}
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int box_jump(box_t * b, int height)
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{
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int sol=0;
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int sgn_vy=-1*sgn(height);
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if (sgn_vy)
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{
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for (int j=0; j<b->h; j++)
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{
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int typetemp=world_get_ctg(b->x+j ,b->y+sgn_vy);
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if (typetemp==CTG_DEATH || typetemp==CTG_SOIL)
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sol=1;
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}
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if (sol)
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b->vy=height;
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}
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} |