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Start pushing away

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This commit is contained in:
Miloslav Číž 2019-10-21 20:49:28 +02:00
parent e5b662468e
commit b1dd065bcd
1 changed files with 61 additions and 0 deletions
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61
main.c
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@ -1148,6 +1148,49 @@ uint8_t SFG_createProjectile(SFG_ProjectileRecord projectile)
return 1; return 1;
} }
/**
Pushes a given position away from a center by given distance, with collisions.
*/
RCL_Vector2D SFG_pushAway(
RCL_Unit pos[3],
RCL_Vector2D center,
RCL_Unit preferredDirection,
RCL_Unit distance)
{
RCL_Vector2D fromCenter;
fromCenter.x = pos[0] - center.x;
fromCenter.y = pos[1] - center.y;
if (fromCenter.x == 0 && fromCenter.y == 0)
fromCenter = RCL_angleToDirection(preferredDirection);
RCL_Unit l = RCL_len(fromCenter);
if (l >= distance)
return;
RCL_Vector2D offset;
offset.x = (fromCenter.x * distance) / l;
offset.y = (fromCenter.y * distance) / l;
RCL_Camera c;
RCL_initCamera(&c);
c.position.x = pos[0];
c.position.y = pos[1];
c.height = pos[2];
RCL_moveCameraWithCollision(&c,offset,0,SFG_floorHeightAt,
SFG_ceilingHeightAt,1,1);
pos[0] = c.position.x;
pos[1] = c.position.y;
pos[2] = c.height;
}
void SFG_createExplosion(RCL_Unit x, RCL_Unit y, RCL_Unit z) void SFG_createExplosion(RCL_Unit x, RCL_Unit y, RCL_Unit z)
{ {
SFG_LOG("creating explostion"); SFG_LOG("creating explostion");
@ -1167,6 +1210,24 @@ void SFG_createExplosion(RCL_Unit x, RCL_Unit y, RCL_Unit z)
explostion.doubleFramesToLive = SFG_EXPLOSION_DURATION_DOUBLE_FRAMES; explostion.doubleFramesToLive = SFG_EXPLOSION_DURATION_DOUBLE_FRAMES;
SFG_createProjectile(explostion); SFG_createProjectile(explostion);
RCL_Unit p[3];
p[0] = SFG_player.camera.position.x;
p[1] = SFG_player.camera.position.y;
p[2] = SFG_player.camera.height;
RCL_Vector2D center;
center.x = x;
center.y = y;
SFG_pushAway(p,center,
SFG_player.camera.direction - RCL_UNITS_PER_SQUARE / 2, 2 * RCL_UNITS_PER_SQUARE);
SFG_player.camera.position.x = p[0];
SFG_player.camera.position.y = p[1];
SFG_player.camera.height = p[2];
} }
/** /**