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actor.c
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actor.c
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/*
Lacewing
Copyright (C) 2003 Linley Henzell & Captain Pork
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public Licence as published by
the Free Software Foundation; either version 2 of the Licence, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public Licence for more details.
You should have received a copy of the GNU General Public Licence
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
The GPL version 2 is included in this distribution in a file called
LICENCE.TXT. Use any text editor or the TYPE command to read it.
You should be able to reach us by sending an email to
captainpork@fastmail.fm.
File: actor.c
History:
6/10/2003 - Version 1.0 finalised
This file contains:
- functions relating to the player ships
*/
#define ALLEGRO_NO_CLEAR_BITMAP_ALIAS
#define ALLEGRO_NO_VHLINE_ALIAS
#include "allegro.h"
#include <math.h>
#include <stdlib.h>
#include "config.h"
#include "globvars.h"
#include "stuff.h"
#include "enemy.h"
#include "cloud.h"
#include "palette.h"
#include "pickup.h"
#include "bullet.h"
#include "sound.h"
#include "display.h"
#include "upgrades.h"
#define ORBITAL_DISTANCE 25000
void drag_actor(int i);
void move_actor(int i);
int detect_collision_actor_enemies(int a);
int detect_collision_actor_pickups(int a);
int hurt_actor(int a, int source, int hurty);
void actor_destroyed(int a, int source);
void actor_explodes(int a);
void score_duel_kill(int a, int source);
void spawn_actor(int a);
void gain_upgrade_points(int who, int how_many);
int get_upgrade_maximum(int a);
void extra_ship(void);
int acquire_target(int a);
int acquire_turret_target(int a);
void actor_orbital(int a);
void actor_shield(int a);
void actor_sidekicks(int a);
int closest_enemy(int x, int y, int range, int hide_invisible);
int closest_enemy_or_actor(int a, int x, int y, int range, int hide_invisible);
void reset_actor(int a);
void upgrade_sidekicks(int a);
void game_is_over(void);
void run_actors(void)
{
int i;
for (i = 0; i < NO_ACTORS; i ++)
{
if (actor[i].type == ACTORTYPE_NONE)
continue;
if (actor[i].in_play == 0)
{
actor[i].x_speed = 0;
actor[i].y_speed = 0;
if (actor[i].spawn_delay > 0)
{
actor[i].spawn_delay --;
continue;
}
if (game.ships_left > 0)
spawn_actor(i);
else
continue;
}
// actor[i].energy += actor[i].recharge;
// if (actor[i].energy >= actor[i].max_energy)
// actor[i].energy = actor[i].max_energy;
if (actor[i].repairing > 0)
{
actor[i].repairing --;
if (actor[i].armour < actor[i].max_armour)
actor[i].armour += 5;
if (actor[i].armour > actor[i].max_armour)
actor[i].armour = actor[i].max_armour;
// + play a sound?
}
if (actor[i].grace_period > 0)
actor[i].grace_period --;
if (actor[i].hurt_pulse > 0)
actor[i].hurt_pulse --;
if (actor[i].recycle1 > 0)
actor[i].recycle1 --;
if (actor[i].recycle2 > 0)
actor[i].recycle2 --;
if (actor[i].turret_recycle > 0)
actor[i].turret_recycle --;
if (actor[i].sidekick_recycle > 0)
actor[i].sidekick_recycle --;
if (actor[i].heavy_recycle > 0)
actor[i].heavy_recycle --;
if (actor[i].backfire_recycle > 0)
actor[i].backfire_recycle --;
if (actor[i].just_upgraded_timeout > 0)
actor[i].just_upgraded_timeout --;
if (actor[i].just_collided > 0)
actor[i].just_collided --;
move_actor(i);
detect_collision_actor_enemies(i);
detect_collision_actor_pickups(i);
if (actor[i].upgraded_system [UPG_SEEKER] > 0)
acquire_target(i);
if (actor[i].upgraded_system [UPG_TURRET] > 0)
acquire_turret_target(i);
if (actor[i].upgraded_system [UPG_ORBITAL] > 0)
actor_orbital(i);
if (actor[i].upgraded_system [UPG_SHIELD] > 0)
actor_shield(i);
if (actor[i].upgraded_system [UPG_SIDEKICK] > 0)
actor_sidekicks(i);
if (actor[i].drive_sound [DRIVE_THRUST] > 0)
actor[i].drive_sound [DRIVE_THRUST] --;
if (actor[i].drive_sound [DRIVE_SLIDE] > 0)
actor[i].drive_sound [DRIVE_SLIDE] --;
if (actor[i].drive_sound [DRIVE_RETRO] > 0)
actor[i].drive_sound [DRIVE_RETRO] --;
}
}
void move_actor(int i)
{
if (actor[i].x + actor[i].x_speed <= actor[i].edge_radius
|| actor[i].x + actor[i].x_speed >= arena.max_x - actor[i].edge_radius - 2000)// - 3000)
{
actor[i].x_speed *= -1;
}
if (actor[i].y + actor[i].y_speed <= actor[i].edge_radius
|| actor[i].y + actor[i].y_speed >= arena.max_y - actor[i].edge_radius - 4000)// - 4000)
{
actor[i].y_speed *= -1;
}
actor[i].x += actor[i].x_speed;
actor[i].y += actor[i].y_speed;
if (game.drag != 0)
drag_actor(i);
}
/*
void drag_actor(int i)
{
int drag_x, drag_y;
int new_x_speed, new_y_speed;
new_x_speed = ((float) actor[i].x_speed * game[0].drag);// / 10000;
new_y_speed = ((float) actor[i].y_speed * game[0].drag);// / 10000;
drag_x = abs(actor[i].x_speed - new_x_speed);
drag_y = abs(actor[i].y_speed - new_y_speed);
actor[i].drag_amount = hypot(drag_x, drag_y);
if (actor[i].drag_amount < 2)
return;
actor[i].x_speed = new_x_speed;
actor[i].y_speed = new_y_speed;
}
*/
void drag_actor(int i)
{
// int drag_x, drag_y;
// int new_x_speed, new_y_speed;
float drag_mult = game.drag;
if (actor[i].dragging == 1)
{
drag_mult *= (float) actor[i].brake_strength;
}
int angle = radians_to_angle(atan2(actor[i].y_speed, actor[i].x_speed));
actor[i].moving_angle = angle;
float dragged = hypot(abs(actor[i].x_speed), abs(actor[i].y_speed)) * drag_mult;
if (actor[i].dragging == 0 && actor[i].upgraded_system [UPG_DRIFT] != 0)
{
if (dragged < 30 + actor[i].upgraded_system [UPG_DRIFT] * 2)
{
dragged /= 10 + actor[i].upgraded_system [UPG_DRIFT];
}
}
float change = cos(angle_to_radians(angle)) * dragged;
actor[i].x_speed -= change;// * game[0].drag;
change = sin(angle_to_radians(angle)) * dragged;
actor[i].y_speed -= change;// * game[0].drag;
if (actor[i].dragging == 1)
{
if (abs(actor[i].x_speed) < 20 && abs(actor[i].y_speed) < 20)
{
actor[i].x_speed = 0;
actor[i].y_speed = 0;
}
}
if (grand(100) + 70 < dragged)
{
int passing_colours [5] = {COLOUR_YELLOW8, COLOUR_ORANGE8, COLOUR_RED8, COLOUR_RED6, COLOUR_RED4};
create_cloud(CLOUD_SPECK,
actor[i].x + grand(15000) - 7500,
actor[i].y + grand(15000) - 7500,
0, 0,
// actor[a].x_speed + x_accel * 20 + (300 - grand(601)),
// actor[a].y_speed + y_accel * 20 + (300 - grand(601)),
0, 0,
10 + grand(11),1,0, 0, 0, 0, passing_colours);
}
actor[i].drag_amount = dragged;// * game[0].drag;
/*
if (actor[i].drag_amount < 2)
return;
actor[i].x_speed = new_x_speed;
actor[i].y_speed = new_y_speed;
*/
}
int acquire_target(int a)
{
actor[a].seek_x = actor[a].x + cos(angle_to_radians(actor[a].angle - ANGLE_QUARTER)) * 75000;
actor[a].seek_y = actor[a].y + sin(angle_to_radians(actor[a].angle - ANGLE_QUARTER)) * 75000;
if (game.type == GAME_DUEL)
{
actor[a].lock = closest_enemy_or_actor(a, actor[a].seek_x, actor[a].seek_y,
35000 + actor[a].upgraded_system [UPG_SEEKER] * 30000, 1);
}
else
actor[a].lock = closest_enemy(actor[a].seek_x, actor[a].seek_y,
35000 + actor[a].upgraded_system [UPG_SEEKER] * 30000, 1);
return 0;
}
int acquire_turret_target(int a)
{
if (game.type == GAME_DUEL)
{
actor[a].turret_lock = closest_enemy_or_actor(a, actor[a].x, actor[a].y,
80000 + actor[a].upgraded_system [UPG_TURRET] * 20000, 1);
}
else
actor[a].turret_lock = closest_enemy(actor[a].x, actor[a].y,
80000 + actor[a].upgraded_system [UPG_TURRET] * 20000, 1);
return 0;
}
int closest_enemy(int x, int y, int range, int hide_invisible)
{
int i;
int dist;
int retval = -1;
for (i = 0; i < NO_ENEMIES; i ++)
{
if (enemy[i].type == ENEMY_NONE)
continue;
if (enemy[i].type == ENEMY_DEAD_WANDERER)
continue; // dead fighters are still dangerous, so lock onto them
if (hide_invisible == 1)
{
if ((enemy[i].type == ENEMY_CLOAKER
|| enemy[i].type == ENEMY_CLOAKER2)
&& enemy[i].attribute [ATTRIB_CLOAKER_PULSE] == 0)
continue;
}
dist = hypot(y - enemy[i].y, x - enemy[i].x);
if (dist < range)
{
retval = i;
range = dist;
}
}
return retval;
}
int closest_enemy_or_actor(int a, int x, int y, int range, int hide_invisible)
{
int i;
int dist;
int retval = -1;
for (i = 0; i < 2; i ++)
{
if (i == a)
continue;
if (actor[i].type == ENEMY_NONE)
continue;
if (actor[i].in_play == 0)
continue;
dist = hypot(y - actor[i].y, x - actor[i].x);
if (dist < range)
{
if (i == 0)
retval = LOCK_ACTOR0;
else
retval = LOCK_ACTOR1;
range = dist;
}
}
for (i = 0; i < NO_ENEMIES; i ++)
{
if (enemy[i].type == ENEMY_NONE)
continue;
if (enemy[i].type == ENEMY_DEAD_WANDERER)
continue; // dead fighters are still dangerous, so lock onto them
if (hide_invisible == 1)
{
if ((enemy[i].type == ENEMY_CLOAKER
|| enemy[i].type == ENEMY_CLOAKER2)
&& enemy[i].attribute [ATTRIB_CLOAKER_PULSE] == 0)
continue;
}
dist = hypot(y - enemy[i].y, x - enemy[i].x);
if (dist < range)
{
retval = i;
range = dist;
}
}
return retval;
}
/*
1 - 2 orbital
2 - ++ damage
3 - 3 orbitals
4 - ++ damage
5 - 4 orbitals
*/
void actor_orbital(int a)
{
if (actor[a].grace_period > 0)
return;
// this would make boss enemies too easy
int colours [4], ox, oy;
// if (actor[a].upgraded_system [UPG_ORBITAL] >= 4)
// actor[a].orbital_spin = 25;
// else
actor[a].orbital_spin = 18;
actor[a].orbital_angle += actor[a].orbital_spin;
if (actor[a].orbital_angle > ANGLE_FULL)
actor[a].orbital_angle -= ANGLE_FULL;
if (actor[a].orbital_angle < 0)
actor[a].orbital_angle += ANGLE_FULL;
int damage = 500;
switch(actor[a].upgraded_system [UPG_ORBITAL])
{
case 1:
colours [0] = COLOUR_RED8;
colours [1] = COLOUR_RED8;
colours [2] = COLOUR_RED6;
colours [3] = COLOUR_RED4;
break;
case 2:
case 3:
colours [0] = COLOUR_YELLOW8;
colours [1] = COLOUR_YELLOW8;
colours [2] = COLOUR_YELLOW6;
colours [3] = COLOUR_YELLOW4;
damage = 700;
break;
case 4:
case 5:
colours [0] = COLOUR_PURPLE8;
colours [1] = COLOUR_PURPLE6;
colours [2] = COLOUR_PURPLE4;
colours [3] = COLOUR_PURPLE3;
damage = 900;
break;
}
ox = actor[a].x + cos(angle_to_radians(actor[a].orbital_angle)) * ORBITAL_DISTANCE;
oy = actor[a].y + sin(angle_to_radians(actor[a].orbital_angle)) * ORBITAL_DISTANCE;
create_bullet(BULLET_NICE_ORBITAL, ox, oy,
0, 0,
a, damage, 2, 100, 0,
0, 0, colours, 1,0,0,0,0,0);
ox = actor[a].x + cos(angle_to_radians(actor[a].orbital_angle + ANGLE_HALF)) * ORBITAL_DISTANCE;
oy = actor[a].y + sin(angle_to_radians(actor[a].orbital_angle + ANGLE_HALF)) * ORBITAL_DISTANCE;
create_bullet(BULLET_NICE_ORBITAL, ox, oy,
0, 0,
a, 50, 2, 100, 0,
0, 0, colours, 1,0,0,0,0,0);
if (actor[a].upgraded_system [UPG_ORBITAL] < 3)
return;
ox = actor[a].x + cos(angle_to_radians(ANGLE_FULL - (actor[a].orbital_angle + ANGLE_HALF))) * ORBITAL_DISTANCE;
oy = actor[a].y + sin(angle_to_radians(ANGLE_FULL - (actor[a].orbital_angle + ANGLE_HALF))) * ORBITAL_DISTANCE;
create_bullet(BULLET_NICE_ORBITAL, ox, oy,
0, 0,
a, 50, 2, 100, 0,
0, 0, colours, 1,0,0,0,0,0);
if (actor[a].upgraded_system [UPG_ORBITAL] < 5)
return;
ox = actor[a].x + cos(angle_to_radians(ANGLE_FULL - (actor[a].orbital_angle))) * ORBITAL_DISTANCE;
oy = actor[a].y + sin(angle_to_radians(ANGLE_FULL - (actor[a].orbital_angle))) * ORBITAL_DISTANCE;
create_bullet(BULLET_NICE_ORBITAL, ox, oy,
0, 0,
a, 50, 2, 100, 0,
0, 0, colours, 1,0,0,0,0,0);
}
void actor_shield(int a)
{
actor[a].max_shield = (actor[a].upgraded_system [UPG_SHIELD]) * 100;
/* if (counter % 3 == 0)
{
if (actor[a].shield < actor[a].max_shield)
// actor[a].shield += actor[a].upgraded_system [UPG_SHIELD] + 1;
actor[a].shield += 3 + actor[a].upgraded_system [UPG_SHIELD]; // if can be increased by > 1, must not be > shield_max or layers look odd.
if (actor[a].shield > actor[a].max_shield)
actor[a].shield = actor[a].max_shield;
}*/
if (actor[a].shield < actor[a].max_shield)
{
if (counter % 2 == 0)
actor[a].shield ++;
if (counter % 6 - actor[a].upgraded_system [UPG_SHIELD] == 0)
actor[a].shield ++;
}
// if (actor[a].shield > actor[a].max_shield)
// actor[a].shield = actor[a].max_shield;
if (actor[a].shield_pulse > 0)
actor[a].shield_pulse --;
}
void actor_sidekicks(int a)
{
int i, xcos2, ysin2;
int passing_colours [5];
if (actor[a].sidekick_recycle > 0)
actor[a].sidekick_recycle --;
int xcos = cos(angle_to_radians(actor[a].angle)) * GRAIN;
int ysin = sin(angle_to_radians(actor[a].angle)) * GRAIN;
// int xcos2;// = cos(angle_to_radians(actor[a].angle)) * GRAIN;
// int ysin2;// = sin(angle_to_radians(actor[a].angle)) * GRAIN;
// if (actor[a].sidekicks >= 2)
// {
// xcos2 = cos(angle_to_radians(actor[a].angle)) * GRAIN;
// ysin2 = sin(angle_to_radians(actor[a].angle)) * GRAIN;
// }
int target_x, target_y;
float speed_mult;
int accel = 0;
for (i = 0; i < actor[a].sidekicks; i ++)
{
switch(i)
{
case 0:
target_x = actor[a].x + (cos(angle_to_radians(actor[a].angle - ANGLE_1_EIGHTH)) * GRAIN * 40);
target_y = actor[a].y + (sin(angle_to_radians(actor[a].angle - ANGLE_1_EIGHTH)) * GRAIN * 40);
accel = 22;
passing_colours [0] = COLOUR_YELLOW8;
passing_colours [1] = COLOUR_GREEN8;
passing_colours [2] = COLOUR_GREEN6;
passing_colours [3] = COLOUR_GREEN4;
passing_colours [4] = COLOUR_GREEN2;
break;
case 1:
target_x = actor[a].x + (cos(angle_to_radians(actor[a].angle - ANGLE_QUARTER - ANGLE_1_EIGHTH)) * GRAIN * 40);
target_y = actor[a].y + (sin(angle_to_radians(actor[a].angle - ANGLE_QUARTER - ANGLE_1_EIGHTH)) * GRAIN * 40);
// target_x = actor[a].x - xcos * 20;
// target_y = actor[a].y - ysin * 20;
accel = 22;
break;
case 2:
target_x = actor[a].x + xcos * 40;
target_y = actor[a].y + ysin * 40;
accel = 12;
passing_colours [0] = COLOUR_YELLOW8;
passing_colours [1] = COLOUR_YELLOW6;
passing_colours [2] = COLOUR_YELLOW4;
passing_colours [3] = COLOUR_YELLOW3;
passing_colours [4] = COLOUR_YELLOW2;
break;
case 3:
target_x = actor[a].x - xcos * 40;
target_y = actor[a].y - ysin * 40;
accel = 12;
break;
}
speed_mult = hypot(actor[a].sidekick_y [i] - target_y, actor[a].sidekick_x [i] - target_x) / 600;
if (speed_mult > 200)
speed_mult = 200;
speed_mult *= accel;
speed_mult /= 10;
/* if (speed_mult < 20 && abs(actor[a].sidekick_x_speed [i]) + abs(actor[a].sidekick_y_speed [i]) < 2000)
{
actor[a].sidekick_angle [i] = turn_towards_angle(actor[a].sidekick_angle [i], actor[a].angle + ANGLE_QUARTER, 8);
actor[a].sidekick_x_speed [i] = 0;
actor[a].sidekick_y_speed [i] = 0;
}
else*/
{
actor[a].sidekick_angle [i] = turn_towards_xy(actor[a].sidekick_x [i], actor[a].sidekick_y [i], target_x, target_y, actor[a].sidekick_angle [i], 16);
// actor[a].sidekick_x_speed [i] = cos(angle_to_radians(actor[a].sidekick_angle [i])) * speed_mult;
// actor[a].sidekick_y_speed [i] = sin(angle_to_radians(actor[a].sidekick_angle [i])) * speed_mult;
// actor[a].sidekick_x_speed [i] += cos(angle_to_radians(actor[a].sidekick_angle [i])) * speed_mult;
// actor[a].sidekick_y_speed [i] += sin(angle_to_radians(actor[a].sidekick_angle [i])) * speed_mult;
xcos2 = cos(angle_to_radians(actor[a].sidekick_angle [i])) * speed_mult;
ysin2 = sin(angle_to_radians(actor[a].sidekick_angle [i])) * speed_mult;
actor[a].sidekick_x_speed [i] += xcos2;
actor[a].sidekick_y_speed [i] += ysin2;
}
actor[a].sidekick_x_speed [i] *= 0.97;
actor[a].sidekick_y_speed [i] *= 0.97;
actor[a].sidekick_x [i] += actor[a].sidekick_x_speed [i];
actor[a].sidekick_y [i] += actor[a].sidekick_y_speed [i];
if (grand(12) == 0 && abs(actor[a].sidekick_x_speed [i]) + abs(actor[a].sidekick_y_speed [i]) > 1000)
{
create_cloud(CLOUD_SPECK,
actor[a].sidekick_x [i] - xcos2 * 37,
actor[a].sidekick_y [i] - ysin2 * 37,
0, 0,
actor[a].sidekick_x_speed [i] - (xcos2 * 10) + (100 - grand(51)),
actor[a].sidekick_y_speed [i] - (ysin2 * 10) + (100 - grand(51)),
10 + grand(11),1,0, 0, 0, 0, passing_colours);
}
}
}
void gain_upgrade_points(int who, int how_many)
{
int maximum = get_upgrade_maximum(who);
if (actor[who].upgrade_slot + how_many >= maximum)
{
actor[who].upgrade_slot = maximum;
return;
}
actor[who].upgrade_slot += how_many;
}
int get_upgrade_maximum(int a)
{
if (actor[a].upgrades [NO_UPGRADES - 1] < 5)
return NO_UPGRADES - 1;
int i;
for (i = NO_UPGRADES - 1; i > -1; i --)
{
if (actor[a].upgrades [i] < 5)
return i;
}
return 0;
}
int detect_collision_actor_enemies(int a)
{
if (actor[a].grace_period > 0)
return -1;
int x2 = actor[a].x - actor[a].x_speed;
int y2 = actor[a].y - actor[a].y_speed;
int i;
int angle1, angle2, angle3;
int total_speed;
int difference;
int collision_velocity = 0;
int hurty = 0;
int passing_colours [5];
int xs2, ys2;
for (i = 0; i < NO_ENEMIES; i ++)
{
if (enemy[i].type == ENEMY_NONE)
continue;
if (enemy[i].radius == 0)
// enemy has no collision radius - dead wanderer etc
continue;
if (actor[a].just_collided > 0 && enemy[i].just_collided > 0)
continue;
if (hypot(actor[a].x - enemy[i].x, actor[a].y - enemy[i].y) <= actor[a].radius + enemy[i].radius
|| hypot(x2 - enemy[i].x, y2 - enemy[i].y) <= actor[a].radius + enemy[i].radius)
{
/* if (actor[a].x_speed == 0)
tangent = 1000;
else
tangent = tan(actor[a].y_speed / actor[a].x_speed);
*/
switch(enemy[i].type)
{
case ENEMY_SWERVER:
case ENEMY_SWERVER2:
case ENEMY_SWERVER3:
case ENEMY_BOUNCER:
case ENEMY_BOUNCER2:
case ENEMY_BOUNCER3:
case ENEMY_BOUNCER4:
case ENEMY_BOUNCER5:
hurt_enemy(i, 99999, -1, 1);
return -1;
}
// Really dodgy collision physics...
collision_velocity = hypot(abs(actor[a].x_speed - enemy[i].x_speed), abs(actor[a].y_speed - enemy[i].y_speed));
// First calculate actor's post-collision velocity:
angle1 = radians_to_angle(atan2(actor[a].y_speed, actor[a].x_speed));
angle2 = radians_to_angle(atan2(actor[a].y - enemy[i].y, actor[a].x - enemy[i].x));
total_speed = hypot(actor[a].y_speed, actor[a].x_speed);
angle1 += ANGLE_HALF;
if (angle2 > ANGLE_FULL)
angle2 -= ANGLE_FULL;
angle2 += ANGLE_QUARTER;
if (angle2 > ANGLE_FULL)
angle2 -= ANGLE_FULL;
/* if (angle1 < angle2)
{
difference = angle2 - angle1;
}
else
{
difference = angle1 - angle2;
}
angle3 = angle1 - difference;*/
difference = angle2 - angle1;
angle3 = angle2 - difference; // or +?
xs2 = actor[a].x_speed;
ys2 = actor[a].y_speed;
actor[a].x_speed = cos(angle_to_radians(angle3)) * total_speed;
actor[a].y_speed = sin(angle_to_radians(angle3)) * total_speed;
actor[a].x_speed += enemy[i].x_speed / 2;
actor[a].y_speed += enemy[i].y_speed / 2;
// Now the enemy's
angle1 = radians_to_angle(atan2(enemy[i].y_speed, enemy[i].x_speed));
angle2 = radians_to_angle(atan2(enemy[i].y - actor[a].y, enemy[i].x - actor[a].x));
total_speed = hypot(enemy[i].y_speed, enemy[i].x_speed);
angle1 += ANGLE_HALF;
if (angle2 > ANGLE_FULL)
angle2 -= ANGLE_FULL;
angle2 += ANGLE_QUARTER;
if (angle2 > ANGLE_FULL)
angle2 -= ANGLE_FULL;
difference = angle2 - angle1;
angle3 = angle2 - difference; // or +?
enemy[i].x_speed = cos(angle_to_radians(angle3)) * total_speed;
enemy[i].y_speed = sin(angle_to_radians(angle3)) * total_speed;
enemy[i].x_speed += (xs2 * 25) / enemy[i].mass;
enemy[i].y_speed += (ys2 * 25) / enemy[i].mass;
passing_colours [0] = TRANS_LGREY;
passing_colours [1] = TRANS_DGREY;
passing_colours [2] = TRANS_WHITE;
place_explosion(actor[a].x, actor[a].y, 0,0,
200 + crandom(150), passing_colours);
do
{
actor[a].x_speed += grand(101) - 50;
actor[a].y_speed += grand(101) - 50;
move_actor(a);
} while (hypot(actor[a].x - enemy[i].x, actor[a].y - enemy[i].y) < actor[a].radius + enemy[i].radius);
place_explosion(actor[a].x, actor[a].y, 0,0,
200 + crandom(150), passing_colours);
play_soundf(WAV_BUMP, 700 + grand(800));
actor[a].just_collided = 7;
enemy[i].just_collided = 7;
enemy[i].hurt_pulse = 4;
hurty = collision_velocity / 30;
if (hurty > 50)
hurty = 50;
hurt_actor(a, a, hurty);
hurt_enemy(i, hurty, a, 1);
break;
/*
if ((angle1 < angle2 && angle2 > angle1 + ANGLE_HALF)
|| (angle1 > angle2 && angle2 > angle1 - ANGLE_HALF))
{
difference =
angle -= turning;
if (angle < 0)
angle += ANGLE_FULL;
}
else
{
angle += turning;
if (angle > ANGLE_FULL)
angle -= ANGLE_FULL;
}
*/
}
}
return -1;
}
int detect_collision_actor_pickups(int a)
{
int x2 = actor[a].x - actor[a].x_speed;
int y2 = actor[a].y - actor[a].y_speed;
int i;
for (i = 0; i < NO_PICKUPS; i ++)
{
if (pickup[i].type == PICKUP_NONE)
continue;
if (hypot(actor[a].x - pickup[i].x, actor[a].y - pickup[i].y) <= actor[a].radius + pickup[i].radius
|| hypot(x2 - pickup[i].x, y2 - pickup[i].y) <= actor[a].radius + pickup[i].radius)
{
switch(pickup[i].type)
{
case PICKUP_UPGRADE1:
gain_upgrade_points(a, 1);
play_soundf(WAV_PICKUP_UPGRADE, 2000);
break;
case PICKUP_UPGRADE2:
gain_upgrade_points(a, 2);
play_soundf(WAV_PICKUP_UPGRADE, 2500);
break;
case PICKUP_UPGRADE3:
gain_upgrade_points(a, 3);
play_soundf(WAV_PICKUP_UPGRADE, 3000);
break;
case PICKUP_REPAIR:
// actor[a].armour = actor[a].max_armour;
actor[a].repairing += 150; // actor[a].max_armour / 10;
// no longer based on armour, as armour is already pretty good
// heals 5 points for every 1 of .repairing, so this heals half
play_sound(WAV_REPAIR);
break;
case PICKUP_GRACE:
actor[a].grace_period = 333;
break;
case PICKUP_SHIP:
extra_ship();
break;
}
pickup_explodes(i, 1);
}
}
return -1;
}
void extra_ship(void)
{
if (game.ships_left <= 20)
{
game.ships_left ++;
play_sound(WAV_EXTRA_SHIP);
if (game.users == 1)
{
send_message(game.single_player, "Extra}!", STYLE_UPGRADE5);
}
else
{
send_message(0, "Extra}!", STYLE_UPGRADE5);
send_message(1, "Extra}!", STYLE_UPGRADE5);
}
}
}
int hurt_actor(int a, int source, int hurty)
{
if (actor[a].in_play == 0)
return 0;
if (actor[a].upgraded_system [UPG_SHIELD] > 0
&& actor[a].shield > 0)
{
if (hurty > actor[a].shield)
{
hurty -= actor[a].shield;
actor[a].shield = 0;
actor[a].shield_pulse = 2 + actor[a].upgraded_system [UPG_SHIELD];
}
else
{
actor[a].shield -= hurty;
actor[a].shield_pulse = 5 + actor[a].upgraded_system [UPG_SHIELD];
play_soundf(WAV_SHIELD, 1200 + grand(300));
return 0;
}
play_soundf(WAV_SHIELD, 1000);
}
// return 0;
// shields go here...
// int passing_colours [5];
actor[a].hurt_pulse = 4;
if (hurty >= actor[a].armour)
{
actor[a].armour = 0;
actor_explodes(a);
actor_destroyed(a, source);
return 0;
}
play_soundf(WAV_BUMP2, 900 + grand(300));
actor[a].armour -= hurty;
return 1;
}
void actor_destroyed(int a, int source)
{
actor[a].in_play = 0;
actor[a].spawn_delay = 50;
actor[a].lock = -1;
actor[a].turret_lock = -1;
if (game.type == GAME_DUEL)
{
score_duel_kill(a, source);
return;
}
int e;
for (e = 0; e < NO_ENEMIES; e ++)
{
if (enemy[e].type == ENEMY_NONE)
continue;
if (enemy[e].attacking == a)
enemy[e].attacking = ATTACK_NONE;
}
if (game.ships_left == 0)
{
if (game.users == 1)
game_is_over();
else
{
if (actor[0].in_play == 0 && actor[1].in_play == 0)
game_is_over();
}
}
}
void game_is_over(void)
{
arena.game_over = 132;
}