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| enum PLAYER_CONTROL
{
WALK_RIGHT,
WALK_LEFT,
RUN_RIGHT,
RUN_LEFT,
START_JUMP,
HOLD_JUMP,
END_JUMP
};
class player
{
public:
//parameters
world environment = world();
float ground_friction = 0.03f;
float air_friction = 0.01f;
float ground_control_force = 0.1f;
float air_control_force = 0.05f;
int jump_max_time = 18;
float jump_velocity = 0.4f;
float gravity = -0.035f;
float walk_speed = 0.25f;
float run_speed = 0.35f;
float fall_vel = -1.2f;
vector<vec2f> poly = { vec2f(-0.4f, -1.7f), vec2f(-0.8f, -1.1f), vec2f(-0.8f, 1.1f), vec2f(-0.4f, 1.7f), vec2f(0.4f, 1.7f), vec2f(0.8f, 1.1f), vec2f(0.8f, -1.1f), vec2f(0.4f, -1.7f) };
//currents
vec2f pos = vec2f();
vec2f vel = vec2f();
float *friction = &ground_friction;
float *control_force = &ground_control_force;
int jump_timer = 0;
bool on_ground = true;
player()
{
};
void collide()
{
bool collides_with_ground = false;
for (int i = 0; i != environment.blocks.size(); i++)
{
bool intersect = false;
for (int j = 0; j != poly.size(); j++)
{
if (environment.blocks[i][0] + 0.5f >= pos.x + poly[j].x && environment.blocks[i][0] - 0.5f <= pos.x + poly[j].x
&& environment.blocks[i][1] + 0.5f >= pos.y + poly[j].y && environment.blocks[i][1] - 0.5f <= pos.y + poly[j].y)
{
intersect = true;
}
}
if (intersect)
{
if (pos.y >= environment.blocks[i][1])
{
float max_y = 0;
for (int i = 0; i != poly.size(); i++)
{
max_y = max(max_y, poly[i].y);
}
pos.sety(environment.blocks[i][1] + 0.5f + max_y);
collides_with_ground = true;
}
else if (pos.y <= environment.blocks[i][1])
{
float min_y = 0;
for (int i = 0; i != poly.size(); i++)
{
min_y = max(min_y, poly[i].y);
}
pos.sety(environment.blocks[i][1] - 0.5f + min_y);
vel.sety(0);
}
}
}
on_ground = collides_with_ground;
};
void move()
{
pos.addxy(vel.x, vel.y);
}
void physics()
{
friction = on_ground ? &ground_friction : &air_friction;
control_force = on_ground ? &ground_control_force : &air_control_force;
if (on_ground)
{
vel.sety(0);
}
else if (fall_vel < vel.y)
{
vel.sety(max(vel.y + gravity, fall_vel));
}
vel.addx(abs(vel.x) > *friction ? (-(vel.x / abs(vel.x)) * *friction) : -vel.x);
}
void control(PLAYER_CONTROL KEY)
{
switch (KEY)
{
case WALK_RIGHT:
if (vel.x < walk_speed) { vel.addx(0.6f * *control_force); }
break;
case WALK_LEFT:
if (vel.x > -walk_speed) { vel.addx(-0.6f * *control_force); }
break;
case RUN_RIGHT:
if (vel.x < run_speed) { vel.addx(0.6f * *control_force); }
break;
case RUN_LEFT:
if (vel.x > -run_speed) { vel.addx(-0.6f * *control_force); }
break;
case START_JUMP:
if (on_ground) { jump_timer = 0; }
break;
case HOLD_JUMP:
if (jump_timer < jump_max_time)
{
jump_timer++;
vel.sety(jump_velocity);
}
else
{
jump_timer = jump_max_time;
}
break;
case END_JUMP:
jump_timer = jump_max_time;
break;
}
};
}; |
(
