Non-transitory computer-readable medium, device, and method for image generation
A non-transitory computer-readable medium stores an image generation program to perform a method which includes, in a scene including a hit timing of an attack in a battle between characters in a game space, determining the hit timing, and a standard portion of a standard character and an opponent portion of an opponent character in the battle which are supposed to hit each other, from the standard character, the opponent character, and animation data; and generating an image of a scene by applying the amination data to at least one of the opponent character and an actual character while moving the position of the actual or opponent character to generate the scene where a portion of the actual character corresponding to the standard portion hits the opponent portion at the hit timing. The actual character has a skeleton model corresponding to that of the standard character.
1. A non-transitory computer-readable medium storing an image generation program, when executed by a game apparatus, causing the game apparatus to perform a method, the method comprising:
in a scene including a timing of a hit of an attack in a battle between a plurality of characters in a game space, determining the timing of the hit, a standard portion of a standard character having a standard body type, and an opponent portion of an opponent character in the battle, from the standard character, the opponent character, and animation data that causes at least one of the standard character and the opponent character to perform an action of the battle, the standard portion and the opponent portion being portions where the hit is supposed to occur; and
generating an image of the scene by applying the animation data to at least one of the opponent character and an actual character having a different body type from the standard body type in such a way that a position of the actual character or a position of the opponent character is moved to generate the scene where a corresponding portion of the actual character corresponding to the standard portion hits the opponent portion at the timing of the hit, the actual character having a skeleton model corresponding to a skeleton model of the standard character.
2. The non-transitory computer-readable medium according to claim 1 , wherein, when the actual character to be moved or the opponent character to be moved is a character having a fixed portion fixed at a fixed position, the generating an image includes:
moving the character having the fixed portion;
putting the fixed portion back to the fixed position; and
correcting a posture of the character having the fixed portion by applying inverse kinematics to the character having the fixed portion with at least the fixed portion fixed.
3. The non-transitory computer-readable medium according to claim 1 , wherein, when the scene includes a timing of a first hit and a timing of a second hit thereafter, the generating an image includes:
from start of an action of the battle to the timing of the first hit, moving the position of the actual character or the position of the opponent character such that the corresponding portion hits the opponent portion at the timing of the first hit; and
from a moment immediately after the timing of the first hit to the timing of the second hit, setting a state at the timing of the first hit as an initial state and then moving the position of the actual character or the position of the opponent character such that the corresponding portion hits the opponent portion at the timing of the second hit.
4. The non-transitory computer-readable medium according to claim 1 , wherein the generating an image includes moving a virtual camera that captures the scene to generate the image, based on the moving of the position of the actual character or the moving of the position of the opponent character, with a direction of line of sight of the virtual camera maintained.
5. The non-transitory computer-readable medium according to claim 1 , wherein the generating an image includes, when the scene includes a plurality of hits occurring substantially at the same time and the plurality of hits involve different corresponding portions of the actual character, moving the position of the actual character or the opponent character based on average values of directions of the moving and distances of the moving that are obtained from the different corresponding portions.
6. The non-transitory computer-readable medium according to claim 1 , wherein, the generating an image includes, when the scene includes a plurality of hits occurring substantially at the same time and the plurality of hits involve different opponent characters, moving positions of the respective opponent characters based on directions of the moving and distances of the moving that are obtained from the different opponent characters.
7. The non-transitory computer-readable medium according to claim 1 , wherein the generating an image includes:
calculating a vector A from the standard portion of the standard character to the corresponding portion of the actual character by using the animation data;
moving the actual character such that a position vector obtained by subtracting the vector A from a position vector of the corresponding portion of the actual character is set as the position vector of the corresponding portion of the actual character or moving the opponent character such that a position vector obtained by adding the vector A to a position vector of the opponent portion of the opponent character is set as the position vector of the opponent portion of the opponent character; and
applying the animation data to at least one of the actual character and the opponent character.
8. The non-transitory computer-readable medium according to claim 1 , wherein
the generating an image includes, at a timing k included in the scene:
calculating a vector Ak from a standard portion of a transparent standard character to the corresponding portion of the actual character and calculating a vector Bk from an opponent portion of a transparent opponent character to the opponent portion of the opponent character; and
moving the actual character such that a position vector obtained by subtracting a vector (Ak−Bk) from a position vector of the corresponding portion of the actual character is set as the position vector of the corresponding portion of the actual character or moving the opponent character such that a position vector obtained by adding the vector (Ak−Bk) to a position vector of the opponent portion of the opponent character is set as the position vector of the opponent portion of the opponent character, and
the transparent standard character and the transparent opponent character are characters in which moving of positions other than that by the animation data is not taken into consideration.
9. The non-transitory computer-readable medium according to claim 1 , wherein the determining includes determining a timing at which moving speed of the standard portion or the opponent portion is highest in the animation data as the timing of the hit.
10. The non-transitory computer-readable medium according to claim 1 , wherein the animation data includes information specifying the standard portion, the opponent portion, or the timing of the hit.
11. An image generation device comprising:
a determination unit that, in a scene including a timing of a hit of an attack in a battle between a plurality of characters in a game space, determines the timing of the hit, a standard portion of a standard character having a standard body type, and an opponent portion of an opponent character in the battle, from the standard character, the opponent character, and animation data that causes at least one of the standard character and the opponent character to perform an action of the battle, the standard portion and the opponent portion being portions where the hit is supposed to occur; and
an image generation unit that generates an image of the scene by applying the animation data to at least one of the opponent character and an actual character having a different body type from the standard body type in such a way that a position of the actual character or a position of the opponent character is moved to generate the scene where a corresponding portion of the actual character corresponding to the standard portion hits the opponent portion at the timing of the hit, the actual character having a skeleton model corresponding to a skeleton model of the standard character.
12. An image generation method of causing a game apparatus to generate an image of a game space, the method comprising:
in a scene including a timing of a hit of an attack in a battle between a plurality of characters in the game space, determining the timing of the hit, a standard portion of a standard character having a standard body type, and an opponent portion of an opponent character in the battle, from the standard character, the opponent character, and animation data that causes at least one of the standard character and the opponent character to perform an action of the battle, the standard portion and the opponent portion being portions where the hit is supposed to occur; and
generating an image of the scene by applying the animation data to at least one of the opponent character and an actual character having a different body type from the standard body type in such a way that a position of the actual character or a position of the opponent character is moved to generate the scene where a corresponding portion of the actual character corresponding to the standard portion hits the opponent portion at the timing of the hit, the actual character having a skeleton model corresponding to a skeleton model of the standard character.