global PI = 3.1415926535897932384626433832795f;
global NPI = -3.1415926535897932384626433832795f;
global R_U = -1.5707963267948966192313216916398f;
global R_D = 1.5707963267948966192313216916398f;
global R_L = 3.1415926535897932384626433832795f;
global R_R = 0f;

global ETON_FAN_AIM = 0; //aimed fan shooting
global ETON_FAN = 1; //unaimed fan shooting
global ETON_CIR_AIM = 2; //aimed circle shooting
global ETON_CIR = 3; //unaimed circle shooting
global ETON_CIR2_AIM = 4; //aimed circle shooting with offset
global ETON_CIR2 = 5; //unaimed circle shooting with offset
global ETON_RDEG = 6; //same as ETON_FAN, but the angles are min-max
global ETON_RSPD = 7; //same as ETON_FAN, but the speeds are min-max
global ETON_RANDOM = 8; //random shooting
global ET8A = 0; //8x8 bullet A (small ball)
global ET8A2 = 1; //8x8 bullet A (small ball)
global ET8B = 2; //8x8 bullet B (small black ball)
global ET16A = 3; //16x16 bullet A (ball)
global ET16A2 = 4; //16x16 bullet A (ball)
global ET16B = 5; //16x16 bullet B (pc98 ball)
global ET16B2 = 6; //16x16 bullet B (pc98 ball)
global ET16C = 7; //16x16 bullet C (petal)
global ET16D = 8; //16x16 bullet D (kunai)
global ET16E = 9; //16x16 bullet E (pellet)
global ET16F = 10; //16x16 bullet F (amulet)
global ET16G = 11; //16x16 bullet G (arrowhead)
global ET16H = 12; //16x16 bullet H (bullet)
global ET16I = 13; //16x16 bullet I (effect)
global ET16J = 14; //16x16 bullet J (black petal)
global ET16K = 15; //16x16 bullet K (small star)
global ET16L = 16; //16x16 bullet L (coin)
global ET32A = 17; //32x32 bullet A (big ball)
global ET32A2 = 18; //32x32 bullet A (big ball)
global ET32B = 19; //32x32 bullet B (pill)
global ET32C = 20; //32x32 bullet C (knife)
global ET32D = 21; //32x32 bullet D (butterfly)
global ET32E = 22; //32x32 bullet E (star)
global ET32F = 23; //32x32 bullet F (blue fire)
global ET32F2 = 24; //32x32 bullet F (red fire)
global ET32G = 25; //32x32 bullet G (heart)
global ET64A = 26; //64x64 bullet A (bubble)
global ET64B = 27; //64x64 bullet B (rose)
global ET16M = 28; //16x16 bullet M (drop)
global ET32F3 = 29; //32x32 bullet F (purple fire)
global ET32LASER = 30; //32x32 laser
global ET_SMALL_BALL = ET8A;
global ET_SMALL_BALL_I = ET8A2;
global ET_SMALL_BLACK_BALL = ET8B;
global ET_BALL = ET16A;
global ET_BALL_I = ET16A2;
global ET_OLDBALL = ET16B;
global ET_OLDBALL_I = ET16B2;
global ET_PETAL = ET16C;
global ET_KUNAI = ET16D;
global ET_PELLET = ET16E;
global ET_AMULET = ET16F;
global ET_ARROWHEAD = ET16G;
global ET_BULLET = ET16H;
global ET_EFF = ET16I;
global ET_BLACK_PETAL = ET16J;
global ET_SMALL_STAR = ET16K;
global ET_COIN = ET16L;
global ET_BIG_BALL = ET32A;
global ET_BIG_BALL_I = ET32A2;
global ET_PILL = ET32B;
global ET_KNIFE = ET32C;
global ET_BUTTERFLY = ET32D;
global ET_STAR = ET32E;
global ET_BLUE_FIRE = ET32F;
global ET_RED_FIRE = ET32F2;
global ET_HEART = ET32G;
global ET_BUBBLE = ET64A;
global ET_ROSE = ET64B;
global ET_DROP = ET16M;
global ET_PURPLE_FIRE = ET32F3;
//global ET32H = 31; //32x32 bullet H (arrow)
global RED16 = 2; //16x16 bullet red color
global BLUE16 = 6; //16x16 bullet blue color
global BLUE32 = 3; //32x32 bullet blue color

global EX_WAIT = 0; //wait for bullet ex to finish
global EX_NO_WAIT = 1; //do not wait for bullet ex to finish
global EX_SPDOWN = 0x0001; //decel effect when shot
global EX_EFFON = 0x0002; //spawn effect when shot
global EX_SPUP = 0x0004; //accel towards
global EX_REF = 0x0100; //reflect on walls
global EX_NO_OUT = 0x0200; //no outside deletion
global NEG = -999999;
global NEGF = -999999f;

global SHOT_REIMU_A = 0;
global SHOT_REIMU_B = 1;
global SHOT_MARISA_A = 2;
global SHOT_MARISA_B = 3;
global SHOT_SANAE_A = 4;
global SHOT_SANAE_B = 5;

global IT_2X_I = 4; //y=-x^2+2x
global IT_SIN_DI = 21; //y=sin(x/(2/pi))

global ENEMY_NO_HURT = 0x1; //cannot be hit
global ENEMY_NO_KILL = 0x2; //cannot kill player
global ENEMY_NO_LR = 0x4; //cannot despawn on LR walls
global ENEMY_NO_UD = 0x8; //cannot despawn on UD walls
global ENEMY_HIDE_LIFE = 0x10; //hide related HUD elements
global ENEMY_HIDE = 0x20; //hide completely
global ENEMY_LIFE_WARN = 0x40; //enables low HP warning sound
global ENEMY_NO_AUTOKILL = 0x80; //cannot be killed by auto-kill instructions (enmClear, msgBegin)
global ENEMY_WILL_AUTOKILL = 0x100; //WILL be auto-killed, regardless of anything
global ENEMY_CAN_GRAZE = 0x200; //can be grazed
global ENEMY_MSG_DO_KILL = 0x400; //can only be auto-killed by msgBegin?
global ENEMY_ET_AUTOKILL = 0x800; //can be cleared by bullet clears?
global ENEMY_NO_OOB = 0xC; //ENEMY_NO_LR | ENEMY_NO_UD

global ITEM_NOTHING = 0;
global ITEM_POWER = 1;
global ITEM_POINT = 2;
global ITEM_BIG_POWER = 3;
global ITEM_KAKERA_1UP = 4;
global ITEM_KAKERA_BOMB = 5;
global ITEM_1UP = 6;
global ITEM_BOMB = 7;
global ITEM_FULL_POWER = 8;
global ITEM_POINT_VAL = 9;
global ITEM_UFO_RED = 10;
global ITEM_UFO_BLUE = 11;
global ITEM_UFO_GREEN = 12;
global ITEM_UFO_RAINBOW_R = 13;
global ITEM_UFO_RAINBOW_B = 14;
global ITEM_UFO_RAINBOW_G = 15;