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Add projectile func

This commit is contained in:
Miloslav Číž 2019-10-22 17:29:21 +02:00
parent f700bc4cf9
commit 3bd2bd05a5
2 changed files with 70 additions and 51 deletions
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2
constants.h
View File

@ -69,7 +69,7 @@
/**
Speed of rocket projectile, in squares per second.
*/
#define SFG_ROCKET_SPEED 20
#define SFG_ROCKET_SPEED 15
/**
Distance at which level elements (sprites) collide, in RCL_Unit (1024 per

119
main.c
View File

@ -1083,6 +1083,44 @@ uint8_t SFG_createProjectile(SFG_ProjectileRecord projectile)
return 1;
}
/**
Launches projectile of given type from given position in given direction
(has to be normalized), with given offset (so as to not collide with the
shooting entity). Returns the same value as SFG_createProjectile.
*/
uint8_t SFG_launchProjectile(
uint8_t type,
RCL_Vector2D shootFrom,
RCL_Unit shootFromHeight,
RCL_Vector2D direction,
RCL_Unit verticalSpeed,
RCL_Unit offsetDistance
)
{
SFG_ProjectileRecord p;
p.type = type;
p.doubleFramesToLive = 255;
p.position[0] =
shootFrom.x + (direction.x * offsetDistance) / RCL_UNITS_PER_SQUARE;
p.position[1] =
shootFrom.y + (direction.y * offsetDistance) / RCL_UNITS_PER_SQUARE;
p.position[2] = shootFromHeight;
p.direction[0] =
(direction.x * SFG_ROCKER_MOVE_UNITS_PER_FRAME) / RCL_UNITS_PER_SQUARE;
p.direction[1] =
(direction.y * SFG_ROCKER_MOVE_UNITS_PER_FRAME) / RCL_UNITS_PER_SQUARE;
p.direction[2] = verticalSpeed;
return SFG_createProjectile(p);
}
void SFG_monsterPerformAI(SFG_MonsterRecord *monster)
{
uint8_t state = monster->stateType & SFG_MONSTER_MASK_STATE;
@ -1103,36 +1141,28 @@ void SFG_monsterPerformAI(SFG_MonsterRecord *monster)
state = SFG_MONSTER_STATE_ATTACKING;
SFG_ProjectileRecord p;
RCL_Vector2D pos;
RCL_Vector2D dir;
p.type = SFG_PROJECTILE_FIREBALL;
p.doubleFramesToLive = 255;
p.position[0] = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]);
p.position[1] = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]);
p.position[2] =
pos.x = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[0]);
pos.y = SFG_MONSTER_COORD_TO_RCL_UNITS(monster->coords[1]);
dir.x = SFG_player.camera.position.x - pos.x;
dir.y = SFG_player.camera.position.y - pos.y;
dir = RCL_normalize(dir);
SFG_launchProjectile(
SFG_PROJECTILE_FIREBALL,
pos,
SFG_floorHeightAt(
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1])
) + RCL_UNITS_PER_SQUARE / 2;
//RCL_Vector2D dir = RCL_angleToDirection(SFG_player.camera.direction);
RCL_Vector2D dir;
dir.x = SFG_player.camera.position.x - p.position[0];
dir.y = SFG_player.camera.position.y - p.position[1];
dir = RCL_normalize(dir);
p.direction[0] = (dir.x * SFG_ROCKER_MOVE_UNITS_PER_FRAME) / RCL_UNITS_PER_SQUARE;
p.direction[1] = (dir.y * SFG_ROCKER_MOVE_UNITS_PER_FRAME) / RCL_UNITS_PER_SQUARE;
p.direction[2] = 0;
SFG_createProjectile(p);
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[0]),
SFG_MONSTER_COORD_TO_SQUARES(monster->coords[1])
) + RCL_UNITS_PER_SQUARE / 2,
dir,
0,
SFG_ELEMENT_COLLISION_DISTANCE + 1
);
}
else
state = SFG_MONSTER_STATE_IDLE;
@ -1399,27 +1429,16 @@ void SFG_gameStep()
if (SFG_keyJustPressed(SFG_KEY_B))
{
// fire
SFG_ProjectileRecord p;
p.type = SFG_PROJECTILE_FIREBALL;
p.doubleFramesToLive = 255;
p.position[0] = SFG_player.camera.position.x;
p.position[1] = SFG_player.camera.position.y;
p.position[2] = SFG_player.camera.height - 256;
RCL_Vector2D dir = RCL_angleToDirection(SFG_player.camera.direction);
p.direction[0] = (dir.x * SFG_ROCKER_MOVE_UNITS_PER_FRAME) / RCL_UNITS_PER_SQUARE;
p.direction[1] = (dir.y * SFG_ROCKER_MOVE_UNITS_PER_FRAME) / RCL_UNITS_PER_SQUARE;
p.direction[2] =
(SFG_player.camera.shear * SFG_ROCKER_MOVE_UNITS_PER_FRAME) /
SFG_CAMERA_MAX_SHEAR_PIXELS;
SFG_createProjectile(p);
SFG_launchProjectile(
SFG_PROJECTILE_FIREBALL,
SFG_player.camera.position,
SFG_player.camera.height,
RCL_angleToDirection(SFG_player.camera.direction),
(SFG_player.camera.shear * SFG_ROCKER_MOVE_UNITS_PER_FRAME) /
SFG_CAMERA_MAX_SHEAR_PIXELS,
SFG_ELEMENT_COLLISION_DISTANCE + 1
);
}
if (SFG_keyIsDown(SFG_KEY_A))
@ -1728,7 +1747,7 @@ SFG_createProjectile(p);
0)
)
{
// eliminate = 1;
eliminate = 1;
break;
}
}