323 lines
12 KiB
Plaintext
323 lines
12 KiB
Plaintext
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// Lasers that don't penetrate
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// Can be pasted into default player Rumia by adding `TLasers();` to @Initialize
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// Activation logic is focused-shooting with a slight delay, similar to CAVE games.
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// "RemovePLaserGfx()" can go into shutting-down (probably not necessary).
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// Made by razzy
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task TLasers{
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InitPLaserGfx(); // Probably effects that occur when the laser reaches an enemy? (KEV)
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let lasers0 = [ID_INVALID,ID_INVALID,ID_INVALID,ID_INVALID,ID_INVALID,ID_INVALID,ID_INVALID,ID_INVALID,ID_INVALID];
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// this delays when the laser fires
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// laser fires when laserMode==0
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// laserMode increments by 1 per frame
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// so laser fires after 15 frames
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// KEV: To fire the laser immediately, just set laserMode to 0.
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let laserLimit = 15;
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let laserMode=-laserLimit;
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loop{
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if(IsPermitPlayerShot
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&& GetPlayerState!=STATE_HIT
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&& GetPlayerState!=STATE_DOWN
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&& GetPlayerState!=STATE_END
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&& (GetVirtualKeyState(VK_SHOT)==KEY_PUSH || GetVirtualKeyState(VK_SHOT)==KEY_HOLD)
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){
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if(GetVirtualKeyState(VK_SLOWMOVE)==KEY_PUSH || GetVirtualKeyState(VK_SLOWMOVE)==KEY_HOLD){
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laserMode=min(0,laserMode+1);
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}
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else{
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// reset laser delay when slowmove is let go
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laserMode=-laserLimit;
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}
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if(laserMode>=0){
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let odd = 1;
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//NonPenetrationLaser(obj, xoff, yoff, ang, spd, maxLen, dmg, IsStrongLaser, width, vwidth)
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// KEV: Ascent loop determines the number of lasers that will be spawned.
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ascent(i in 0..1){
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let las = lasers0[i];
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if(Obj_IsValueExists(las,"DEL") || Obj_IsDeleted(las)){
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let magnitude = 1;
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lasers0[i]=NonPenetrationLaser(objPlayer, 0, -36, 270, 40, GetStgFrameHeight()*1.5, 2, true, 2, 2);
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}
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odd=-odd;
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}
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//PlaySnd(SND_p_shot, 93);
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}
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}
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else{
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// reset laser delay when fire is let go
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// KEV: Unnecessary if the laser fires immediately
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laserMode=-laserLimit;
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}
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yield;
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}
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// of an array of 2d coords, return the one closest to (sx,sy). Also returns the distance from (sx,sy) as the third value.
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function GetClosestCoord(coords, sx,sy){
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let closest=[];
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let last_dist=99999;
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let arrayLen=length(coords);
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if(arrayLen==1){
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let cur_dist;
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if(length(coords[0])==3){ cur_dist=coords[0][2]; }
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else{ cur_dist=((coords[0][0]-sx)^2+(coords[0][1]-sy)^2)^0.5; }
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closest=[coords[0][0],coords[0][1], cur_dist];
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}
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else{
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ascent(i in 0..arrayLen){
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let cur_dist;
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if(length(coords[i])==3){ cur_dist=(coords[i][2]); }
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else{ cur_dist=((coords[i][0]-sx)^2+(coords[i][1]-sy)^2)^0.5; }
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if(cur_dist < last_dist){
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last_dist=cur_dist;
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closest=[coords[i][0], coords[i][1], cur_dist];
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}
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}
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}
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return closest;
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}
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// non-penetrating laser object
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function NonPenetrationLaser(obj, xoff, yoff, ang, spd, maxLen, dmg, IsStrongLaser, width, vwidth){
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/* KEV: Parameter explanations:
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obj: Where the laser is fired from
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xoff/yoff: x and y offsets relative to the object
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ang, spd: Self-explanatory
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maxLen: max length of the laser, DON'T SET THIS TOO HIGH! GetStgFrameHeight() + a generous number should be enough
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dmg: Self-explanatory
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IsStrongLaser: use this if you want to differentiate between strong and weak lasers I guess, I don't play CAVE games so idk
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width, vwidth: intersection & render width of laser
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*/
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// KEV: Defines the laser object.
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let damager = ObjShot_Create(OBJ_STRAIGHT_LASER);
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ObjShot_SetGraphic(damager, 1);
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Obj_SetVisible(damager, false);
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ObjShot_Regist(damager);
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ObjShot_SetDamage(damager, dmg);
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ObjShot_SetPenetration(damager, 8);
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ObjLaser_SetLength(damager, 0);
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ObjLaser_SetIntersectionWidth(damager, 64*width);
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ObjLaser_SetRenderWidth(damager, 64*vwidth);
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ObjStLaser_SetAngle(damager, ang);
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TNonPenetrationLaser();
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return damager;
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task TNonPenetrationLaser(){
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let scroll=rand(0,64);
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let len=0; // the length of the laser (increased until maxLen)
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let cosine=cos(ang); // grab this value for placement of the tip. **this assumes the laser never changes angle**
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let sine=sin(ang); // grab this value for placement of the tip. **this assumes the laser never changes angle**
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// **for lasers that change angle, cosine and sine will need to be updated**
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// Laser is now firing
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while(!Obj_IsDeleted(damager) // KEV: The four following states can be reduced to !ripplayer in my player scripts
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&& IsPermitPlayerShot
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&& GetPlayerState!=STATE_HIT
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&& GetPlayerState!=STATE_DOWN
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&& GetPlayerState!=STATE_END // Reduce these below to != KEY_FREE
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&& (GetVirtualKeyState(VK_SHOT)==KEY_PUSH || GetVirtualKeyState(VK_SHOT)==KEY_HOLD)
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&& (GetVirtualKeyState(VK_SLOWMOVE)==KEY_PUSH || GetVirtualKeyState(VK_SLOWMOVE)==KEY_HOLD)
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){
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CheckLaserIntersection;
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// Set the laser's position and length
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ObjMove_SetPosition(damager, ObjRender_GetX(obj)+xoff,ObjRender_GetY(obj)+yoff);
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len = min(maxLen, len+spd);
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ObjLaser_SetLength(damager, len);
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MakeLaserGfxFrame;
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yield;
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}
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// This laser isn't deleted just yet. I let it fly away first.
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// This value lets other tasks check when this happens.
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Obj_SetValue(damager, "DEL", true);
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// Laser is now leaving
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ObjMove_SetAngle(damager, ObjStLaser_GetAngle(damager));
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ObjMove_SetSpeed(damager, spd);
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while(!Obj_IsDeleted(damager) && len>8){
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MakeLaserGfxFrame;
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len=max(0,len-spd);
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ObjLaser_SetLength(damager, len);
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CheckLaserIntersection;
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yield;
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}
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Obj_Delete(damager);
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function MakeLaserGfxFrame(){
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let hyper=0;
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let gLen = max(0, len-32-24);
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let gLen2 = max(0, len-32);
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// add sprites to the per-frame sprite list
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// KEV: Function reference: PLaserGfxFrameLaser(gfxObj, u, v, u2, v2, ry, x, y, ang, sx, sy, rd, gn, bl, al)
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/*
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KEV: Function description:
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Adds a vertex to the attached gfxObj sprite list. Uses u, v, u2, v2 as coordinates for the SourceRect, ry for DestRect (rx is calculated in the function), x & y for vertex position, sx & sy for the scaling, rd, gn and bl for colors, and al for alpha.
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PLaserGfxFrame is similar but is used for the base and tip of the laser. The ry (and by extension rx) parameters are removed.
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(The color values should be unnecessary.)
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*/
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// ObjStLaser_SetEndGraphic (ph3sx) may come in handy for the base/tips.
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// !IsStrongLaser = 0, IsStrongLaser = 1
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PLaserGfxFrameLaser(lasGfxObj[0], 32+hyper*32+!IsStrongLaser*64, scroll, 63+hyper*32+!IsStrongLaser*64, (len-1)/4+scroll, 64, ObjMove_GetX(damager)+cosine*24, ObjMove_GetY(damager)+sine*24, ang+90, vwidth*rand(0.75,1.0),gLen/64, 255, 255, 255, 255);
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PLaserGfxFrameLaser(lasGfxObj[1], 32+hyper*32+!IsStrongLaser*64, scroll, 63+hyper*32+!IsStrongLaser*64, (len-1)/4+scroll, 64, ObjMove_GetX(damager)+cosine*24, ObjMove_GetY(damager)+sine*24, ang+90, vwidth*rand(0.75,1.0), gLen/64, 255, 255, 255, 48);
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PLaserGfxFrame(lasGfxObj[2], 160, 0, 191, 31, ObjMove_GetX(damager)+cosine*24, ObjMove_GetY(damager)+sine*24, ang+90, vwidth+rand(0.4, 0.5), 6, 255,255,255, 255); // Base of laser
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PLaserGfxFrame(lasGfxObj[2], 160, 32, 191, 63, ObjMove_GetX(damager)+cosine*gLen2, ObjMove_GetY(damager)+sine*gLen2, ang+90, vwidth+rand(0.4, 0.5), 6, 255, 255, 255, 255);// Tip of laser
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scroll += 3; // Scrolls the laser's graphic.
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}
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function CheckLaserIntersection(){
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// ------------------ Check for enemy collisions ------------------
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let enemies=ObjCol_GetListOfIntersectedEnemyID(damager); // Get enemy array
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let closest=[];
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let arrayLen=length(enemies);
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// Check all enemies hit (if any)
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if(arrayLen>0){
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let enm_pos=[]; // will be a 2-dimensional array
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// KEV: If there is no strong/weak laser differentiation, this ascent loop can be removed entirely(?)
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ascent(i in 0..arrayLen){ // go through the enemies list
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// Weaker lasers get pushed back by "popcorn" enemies.
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// KEV: I don't really want to implement strong/weak laser differentiations...
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if(!IsStrongLaser || ObjEnemy_GetInfo(enemies[i], INFO_LIFE) > 1){
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// There are multiple collisions per enemy to check as well
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// It's rare that there's more than one, but it's allowed
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let pos=GetEnemyIntersectionPositionByIdA1(enemies[i]); // KEV: Returns the multiple hitboxes of the enemy as a 2D array, format is [index][x, y of hitbox].
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/* KEV: Further explanation (rough and probably incorrect);
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An enemy has 2 hitboxes, one at coords [16, 16] and one at [32, 32].
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You get a 2D array named "coords" containing the coordinates of these 2 hitboxes by using GetEnemyIntersectionPositionByIdA1.
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You then write this line "float num = coords[0][1];" and WriteLog() the value of num.
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coords[0][1] corresponds to the y coordinate of the first hitbox, which would give you a num value of 16.
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(I don't know the order the hitboxes will be sorted in the array, though. For all I know, coords[0][1] may be the second hitbox's y (32)...?)
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*/
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let closest2=GetClosestCoord(pos, ObjMove_GetX(damager),ObjMove_GetY(damager));
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if(closest2[0]!=-1234){
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enm_pos=enm_pos~[closest2];
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}
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}
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}
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closest = GetClosestCoord(enm_pos, ObjMove_GetX(damager),ObjMove_GetY(damager));
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}
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// ------------------ ------------------ ------------------
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// There has been a collision, dial back laser length to (roughly) the point of collision.
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// (Roughly) because we can't get the exact location, and doing it ourselves requires finding the hitbox dimensions.
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// KEV: Getting the hitbox dimensions/locations should be perfectly possible with ph3sx's intersection-obtaining functions. Will need re-examining
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if(length(closest) > 0){
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let dist=closest[2]-16;
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len=max(0,dist);
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}
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}
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}
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} // NonPenetrationLaser
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}
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let lasGfxObj=[]; // KEV: An array that will contain three sprite lists, rendering three different parts of the laser (base, body, tip).
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// KEV: Creates the sprite lists, assigns the texture to them, and adds them as indexes into lasGfxObj.
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task InitPLaserGfx(){
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let imgLaser = GetCurrentScriptDirectory() ~ "laser_fx.png";
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LoadTexture(imgLaser);
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ascent(i in 0..3){
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let gfx = ObjPrim_Create(OBJ_SPRITE_LIST_2D);
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ObjPrim_SetTexture(gfx, imgLaser);
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Obj_SetRenderPriorityI(gfx, 41);
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lasGfxObj = lasGfxObj~[gfx];
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}
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ObjRender_SetBlendType(lasGfxObj[1], BLEND_ADD_ARGB);
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Obj_SetRenderPriorityI(lasGfxObj[2], 42);
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while(true){
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ascent(i in 0..length(lasGfxObj)){
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ObjSpriteList2D_ClearVertexCount(lasGfxObj[i]);
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}
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yield;
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}
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}
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task RemovePLaserGfx{
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let imgLaser = GetCurrentScriptDirectory() ~ "laser_fx.png";
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RemoveTexture(imgLaser);
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ascent(i in 0..length(lasGfxObj)){
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Obj_Delete(lasGfxObj[i]);
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lasGfxObj[i]=ID_INVALID;
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}
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}
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// See the non-penetrating laser object task for information on these tasks.
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task PLaserGfxFrame(gfxObj, u, v, u2, v2, x, y, ang, sx, sy, rd, gn, bl, al){
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if(gfxObj==ID_INVALID){return;}
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ObjRender_SetPosition(gfxObj, x, y, 0);
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ObjRender_SetAngleZ(gfxObj, ang);
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ObjRender_SetScaleXYZ(gfxObj, sx, sy, 1);
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ObjRender_SetColor(gfxObj, rd, gn, bl);
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ObjRender_SetAlpha(gfxObj, al);
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ObjSpriteList2D_SetSourceRect(gfxObj, u, v, u2, v2);
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ObjSpriteList2D_SetDestCenter(gfxObj);
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ObjSpriteList2D_AddVertex(gfxObj);
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}
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task PLaserGfxFrameLaser(gfxObj, u, v, u2, v2, ry, x, y, ang, sx, sy, rd, gn, bl, al){
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if(gfxObj==ID_INVALID){return;}
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ObjRender_SetPosition(gfxObj, x,y,0);
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ObjRender_SetAngleZ(gfxObj, ang);
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ObjRender_SetScaleXYZ(gfxObj, sx ,sy, 1);
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ObjRender_SetColor(gfxObj, rd,gn,bl);
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ObjRender_SetAlpha(gfxObj, al);
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ObjSpriteList2D_SetSourceRect(gfxObj, u, v, u2, v2);
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let rx=(u2-u)/2;
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ObjSpriteList2D_SetDestRect(gfxObj, -rx,0,rx,-ry);
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ObjSpriteList2D_AddVertex(gfxObj);
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}
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