Predictive display of thrown projectile
View Patent ↗Embodiments of this disclosure describe a method and an apparatus for controlling a virtual object to interact with a projectile. The method includes: determining a shooting direction of a camera of the virtual scene as a throwing direction of a projectile controlled by the virtual object; determining a motion trajectory of the projectile according to an initial position, the throwing direction, an initial throwing speed of the projectile, and a motion law of an object under an influence of gravity acceleration, so that the motion trajectory conforms to the motion law; displaying, in the virtual scene, the motion trajectory; adjusting the shooting direction of the camera of the virtual scene, to obtain an adjusted throwing direction of the projectile; updating the motion trajectory of the projectile based on the adjusted throwing projectile; and displaying, in the virtual scene, an updated motion trajectory.
1. A method for controlling a virtual object to interact with a projectile in a virtual scene, applied to a terminal, the method comprising:
determining a shooting direction of a camera of the virtual scene as a throwing direction of a projectile controlled by the virtual object;
determining an initial position of the projectile via:
projecting the projectile to a horizontal plane of a three-dimensional coordinates of the virtual object;
moving the projectile to a right rear side of the virtual object by adjusting an X-axis coordinate and a Y-axis coordinate of the projectile based on a preset angle to the virtual object and preset distance from the virtual object, respectively;
adjusting a Z-axis coordinate of the projectile based on a pre-configured value;
determining a motion trajectory of the projectile according to the initial position, the throwing direction, an initial throwing speed of the projectile, and a motion law of an object under an influence of gravity acceleration, so that the motion trajectory conforms to the motion law;
displaying, in the virtual scene, the motion trajectory;
adjusting the shooting direction of the camera of the virtual scene, to obtain an adjusted throwing direction of the projectile;
updating the motion trajectory of the projectile based on the adjusted throwing projectile; and
displaying, in the virtual scene, an updated motion trajectory.
2. The method of claim 1 , further comprising:
adjusting a viewing angle of the virtual scene based on the adjusted shooting direction of the camera.
3. The method of claim 1 , wherein adjusting the shooting direction of the camera of the virtual scene comprises is achieved via at least one of:
a press position, a press force, or a press time of a press operation applied to a viewing angle adjustment control area of the terminal;
a rotation or a tilt operation on the terminal; or
a sliding direction, a sliding distance, and a sliding speed of a sliding operation on the terminal.
4. The method of claim 3 , wherein the sliding speed and a rotation speed of shooting direction of the camera are positively correlated, and wherein the sliding distance and a rotation angle of the shooting direction of the camera are positively correlated.
5. The method of claim 1 , further comprising determine the initial of the projectile via one of:
determining the initial position as a location from which the projectile is picked up by the virtual object;
determining the initial position based on a position of the virtual object, and adjusting a height of the initial position to be a height of a hand of the virtual object; or
determining the initial position based on a preset angle to the virtual object and a preset distance to the virtual object.
6. The method of claim 1 , further comprising:
displaying, in the virtual scene, a dynamic image of the projectile moving to an end position of the motion trajectory along the motion trajectory.
7. The method according to claim 6 , further comprising:
controlling the virtual object to perform a throwing operation on the projectile and displaying a dynamic image of the projectile moving to an end position along the motion trajectory, wherein a movement of the projectile ends in response to the projectile colliding with an obstacle.
8. The method of claim 7 , further comprising:
in response to the projectile colliding with the obstacle, simulating, at the end position of the motion trajectory in the virtual scene, an effect of the projectile hitting the obstacle.
9. A device for controlling a virtual object to interact with a projectile in a virtual scene, the device comprising a memory for storing computer instructions and a processor in communication with the memory, wherein, when the processor executes the computer instructions, the processor is configured to cause the device to perform:
determining a shooting direction of a camera of the virtual scene as a throwing direction of a projectile controlled by the virtual object;
determining an initial position of the projectile via:
projecting the projectile to a horizontal plane of a three-dimensional coordinates of the virtual object;
moving the projectile to a right rear side of the virtual object by adjusting an X-axis coordinate and a Y-axis coordinate of the projectile based on a preset angle to the virtual object and preset distance from the virtual object, respectively;
adjusting a Z-axis coordinate of the projectile based on a pre-configured value;
determining a motion trajectory of the projectile according to the initial position, the throwing direction, an initial throwing speed of the projectile, and a motion law of an object under an influence of gravity acceleration, so that the motion trajectory conforms to the motion law;
displaying, in the virtual scene, the motion trajectory;
adjusting the shooting direction of the camera of the virtual scene, to obtain an adjusted throwing direction of the projectile;
updating the motion trajectory of the projectile based on the adjusted throwing projectile; and
displaying, in the virtual scene, an updated motion trajectory.
10. The device of claim 9 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to perform:
adjusting a viewing angle of the virtual scene based on the adjusted shooting direction of the camera.
11. The device of claim 9 , wherein adjusting the shooting direction of the camera of the virtual scene comprises is achieved via at least one of:
a press position, a press force, or a press time of a press operation applied to a viewing angle adjustment control area of the device;
a rotation or a tilt operation on the device; or
a sliding direction, a sliding distance, and a sliding speed of a sliding operation on the device.
12. The device of claim 11 , wherein the sliding speed and a rotation speed of shooting direction of the camera are positively correlated, and wherein the sliding distance and a rotation angle of the shooting direction of the camera are positively correlated.
13. The device of claim 9 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to determine the initial of the projectile via one of:
determining the initial position as a location from which the projectile is picked up by the virtual object;
determining the initial position based on a position of the virtual object, and adjusting a height of the initial position to be a height of a hand of the virtual object; or
determining the initial position based on a preset angle to the virtual object and a preset distance to the virtual object.
14. The device of claim 9 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to perform:
displaying, in the virtual scene, a dynamic image of the projectile moving to an end position of the motion trajectory along the motion trajectory.
15. The device according to claim 14 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to perform:
controlling the virtual object to perform a throwing operation on the projectile and displaying a dynamic image of the projectile moving to an end position along the motion trajectory, wherein a movement of the projectile ends in response to the projectile colliding with an obstacle.
16. The device of claim 15 , wherein, when the processor executes the computer instructions, the processor is configured to further cause the device to:
in response to the projectile colliding with the obstacle, simulating, at the end position of the motion trajectory in the virtual scene, an effect of the projectile hitting the obstacle.
17. A non-transitory storage medium for storing computer readable instructions, the computer readable instructions, when executed by a processor in a device for controlling a virtual object to interact with a projectile in a virtual scene, causing the processor to:
determining a shooting direction of a camera of the virtual scene as a throwing direction of a projectile controlled by the virtual object;
determining an initial position of the projectile via:
projecting the projectile to a horizontal plane of a three-dimensional coordinates of the virtual object;
moving the projectile to a right rear side of the virtual object by adjusting an X-axis coordinate and a Y-axis coordinate of the projectile based on a preset angle to the virtual object and preset distance from the virtual object, respectively;
adjusting a Z-axis coordinate of the projectile based on a pre-configured value;
determining a motion trajectory of the projectile according to the initial position, the throwing direction, an initial throwing speed of the projectile, and a motion law of an object under an influence of gravity acceleration, so that the motion trajectory conforms to the motion law;
displaying, in the virtual scene, the motion trajectory;
adjusting the shooting direction of the camera of the virtual scene, to obtain an adjusted throwing direction of the projectile;
updating the motion trajectory of the projectile based on the adjusted throwing projectile; and
displaying, in the virtual scene, an updated motion trajectory.
18. The non-transitory storage medium of claim 17 , wherein, when the computer readable instructions, when executed by a processor, further cause the device to perform:
adjusting a viewing angle of the virtual scene based on the adjusted shooting direction of the camera.
19. The non-transitory storage medium of claim 17 , wherein adjusting the shooting direction of the camera of the virtual scene comprises is achieved via at least one of:
a press position, a press force, or a press time of a press operation applied to a viewing angle adjustment control area of the device;
a rotation or a tilt operation on the device; or
a sliding direction, a sliding distance, and a sliding speed of a sliding operation on the device.
20. The non-transitory storage medium of claim 19 , wherein the sliding speed and a rotation speed of shooting direction of the camera are positively correlated, and wherein the sliding distance and a rotation angle of the shooting direction of the camera are positively correlated.