69 lines
1.4 KiB
C
69 lines
1.4 KiB
C
#include <camera.h>
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#include <mario.h>
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#include <world.h>
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#include <base.h>
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#include <keyboard.h>
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static int y=0;
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static int last_vy=0;
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static int immobile=0;
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static int distance=0;
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static int delta_y=0; // the player can choose the y positionning of the camera with arrows
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int cameraX() {return min(max(mario.p.x-40,0),map_current->w*8-128);}
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int cameraY() {return max(max(y-32,0)-delta_y,0);}
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void cameraMove() // only vertical movement
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{
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static int camera_vy=0;
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if (MKB_getKeyState(MK_UP) && (abs(delta_y)<20 || delta_y>=0)) { delta_y-=4;}
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if (MKB_getKeyState(MK_DOWN) && (abs(delta_y)<20 || delta_y<=0)) { delta_y+=4;}
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if (!MKB_getKeyState(MK_DOWN) && !MKB_getKeyState(MK_UP)) delta_y-=4*sgn(delta_y);
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if (mario.p.y==last_vy) immobile++;
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else
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{
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last_vy=mario.p.y;
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immobile=0;
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}
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if (mario.p.y-cameraY()-mario.p.h<16 || mario.p.y-cameraY()>54)
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{
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y+=4*sgn(mario.p.y-y);
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}
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if (immobile>=2)
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{
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//y+=(mario.p.y-y)/3;
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if (camera_vy==0) distance=2*(mario.p.y-y)*sgn(mario.p.y-y);
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//décéleration après avoir parvouru la moitié de la distance, sinon acceleration
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if (camera_vy*(camera_vy+1)>distance) camera_vy--;
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else camera_vy++;
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//y++;
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if (camera_vy<0) camera_vy=0;
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if (((y+camera_vy*sgn(mario.p.y-y)/2)-(mario.p.y))*sgn(mario.p.y-y)>0)
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{
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y=mario.p.y;
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camera_vy=0;
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}
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else
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y+=(camera_vy*sgn(mario.p.y-y))/2;
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}
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last_vy=mario.p.y;
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}
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void cameraAdjust()
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{
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y=mario.p.y;
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}
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void cameraReset()
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{
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y=0;
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}
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