mirror of https://github.com/dirtbags/tanks.git
109 lines
3.0 KiB
C
109 lines
3.0 KiB
C
#pragma once
|
|
|
|
/* τ = 2π */
|
|
#define TAU 6.28318530717958647692
|
|
#define PI 3.14159265358979323846
|
|
|
|
/* Some in-game constants */
|
|
#define TANK_MAX_SENSORS 10
|
|
#define TANK_RADIUS 7.5
|
|
#define TANK_SENSOR_RANGE 100
|
|
#define TANK_CANNON_RECHARGE 20 /* Turns to recharge cannon */
|
|
#define TANK_CANNON_RANGE (TANK_SENSOR_RANGE / 2)
|
|
#define TANK_MAX_ACCEL 35
|
|
#define TANK_MAX_TURRET_ROT (TAU/8)
|
|
#define TANK_TOP_SPEED 7
|
|
#define TANK_FRICTION 0.75
|
|
|
|
/* (tank radius + tank radius)^2 */
|
|
#define TANK_COLLISION_ADJ2 \
|
|
((TANK_RADIUS + TANK_RADIUS) * (TANK_RADIUS + TANK_RADIUS))
|
|
|
|
/* (Sensor range + tank radius)^2
|
|
* If the distance^2 to the center of a tank <= TANK_SENSOR_ADJ2,
|
|
* that tank is within sensor range. */
|
|
#define TANK_SENSOR_ADJ2 \
|
|
((TANK_SENSOR_RANGE + TANK_RADIUS) * (TANK_SENSOR_RANGE + TANK_RADIUS))
|
|
|
|
#define TANK_CANNON_ADJ2 \
|
|
((TANK_CANNON_RANGE + TANK_RADIUS) * (TANK_CANNON_RANGE + TANK_RADIUS))
|
|
|
|
#ifndef rad2deg
|
|
#define rad2deg(r) ((int)(360*(r)/TAU))
|
|
#define deg2rad(r) ((r*TAU)/360)
|
|
#endif
|
|
|
|
#ifndef max
|
|
#define max(a,b) (((a) > (b)) ? (a) : (b))
|
|
#define min(a,b) (((a) < (b)) ? (a) : (b))
|
|
#endif
|
|
|
|
struct tanks_game {
|
|
float size[2]; /* dimensions of playing field */
|
|
};
|
|
|
|
struct tank;
|
|
|
|
struct sensor {
|
|
float angle;
|
|
float width;
|
|
int range;
|
|
int turret; /* Mounted to turret? */
|
|
int triggered;
|
|
};
|
|
|
|
typedef void tank_run_func(struct tank *, void *);
|
|
|
|
struct tank {
|
|
float position[2]; /* Current position on the board */
|
|
float angle; /* Current orientation */
|
|
struct {
|
|
float current[2]; /* Current tread speed */
|
|
float desired[2]; /* Desired tread speed */
|
|
} speed;
|
|
struct {
|
|
float current; /* Current turret angle */
|
|
float desired; /* Desired turret angle */
|
|
int firing; /* True if firing this turn */
|
|
int recharge; /* Turns until gun is recharged */
|
|
} turret;
|
|
struct sensor sensors[TANK_MAX_SENSORS]; /* Sensor array */
|
|
int led; /* State of the LED */
|
|
struct tank *killer; /* Killer, or NULL if alive */
|
|
char *cause_death; /* Cause of death */
|
|
|
|
tank_run_func *run; /* Function to run a tank */
|
|
void *udata; /* Argument to pass to run */
|
|
};
|
|
|
|
void tank_init(struct tank *tank, tank_run_func *run, void *udata);
|
|
void tanks_run_turn(struct tanks_game *game, struct tank *tanks, int ntanks);
|
|
|
|
|
|
/*
|
|
*
|
|
* Tanks API for scripts
|
|
*
|
|
*/
|
|
|
|
/** Has the turret recharged? */
|
|
int tank_fire_ready(struct tank *tank);
|
|
|
|
/** Fire! */
|
|
void tank_fire(struct tank *tank);
|
|
|
|
/** Set desired speed */
|
|
void tank_set_speed(struct tank *tank, float left, float right);
|
|
|
|
/** Get the current turret angle */
|
|
float tank_get_turret(struct tank *tank);
|
|
|
|
/** Set the desired turret angle */
|
|
void tank_set_turret(struct tank *tank, float angle);
|
|
|
|
/** Is a sensor active? */
|
|
int tank_get_sensor(struct tank *tank, int sensor_num);
|
|
|
|
/** Set the LED state */
|
|
void tank_set_led(struct tank *tank, int active);
|