33 lines
752 B
C
33 lines
752 B
C
#include "camera.h"
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#include "map.h"
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Position camera_to_camera_position(Camera *cam, Position *pos)
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{
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return (Position) {
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pos->x - cam->pos.x,
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pos->y - cam->pos.y
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};
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}
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void camera_follow_position(Camera *cam, Position *pos)
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{
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int room_width, room_height;
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room_width = MAP_ROOM_WIDTH * TILE_DIMENSION;
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room_height = MAP_ROOM_HEIGHT * TILE_DIMENSION;
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if (pos->x <= 0)
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cam->pos.x = 0;
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else if (pos->x >= room_width * MAP_H_ROOM_COUNT)
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cam->pos.x = room_width * (MAP_H_ROOM_COUNT - 1);
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else
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cam->pos.x = pos->x - (pos->x % room_width);
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if (pos->y <= 0)
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cam->pos.y = 0;
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else if (pos->y >= room_height * MAP_V_ROOM_COUNT)
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cam->pos.y = room_height * (MAP_V_ROOM_COUNT - 1);
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else
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cam->pos.y = pos->y - (pos->y % room_height);
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}
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