Vendor raptor source files (was embedded gitlink)

Tree vendored at upstream 0019c5dd; origin + license recorded in
raptor/VENDOR.txt. Windows SDL dev packages excluded via .gitignore.

raptor/src/eshot.h

@@ -0,0 +1,54 @@
+#pragma once
+#include "rap.h"
+#include "enemy.h"
+#include "gfxapi.h"
+
+typedef enum
+{
+    ES_ATPLAYER,      // 0
+    ES_ATDOWN,        // 1
+    ES_ANGLELEFT,     // 2
+    ES_ANGLERIGHT,    // 3
+    ES_MISSLE,        // 4
+    ES_LASER,         // 5
+    ES_MINES,         // 6
+    ES_PLASMA,        // 7
+    ES_COCONUTS       // 8
+}ESHOT_TYPE;
+
+typedef struct 
+{
+    int item;                                // BASE ITEM NUMBER
+    char *pic[10];                           // POINTER TO PICS
+    int num_frames;                          // NUMBER OF FRAMES                    
+    int smokeflag;                           // TRUE = SMOKETRAIL                       
+    int speed;                               // SPEED OF SHOT
+    int xoff;                                // X CENTER OFFSET
+    int yoff;                                // Y CENTER OFFSET
+    int hits;                                // HIT POINT DAMAGE TO PLAYER
+}ESHOT_LIB;
+
+typedef struct ESHOT_S
+{
+    struct ESHOT_S *prev;                    // LINK LIST PREV
+    struct ESHOT_S *next;                    // LINK LIST NEXT
+    char *pic;                               // POINTER TO CUR FRAME PIC
+    int curframe;                            // CURRENT ANIM FRAME
+    int x;                                   // CUR SHOT CENTER X
+    int y;                                   // CUR SHOT CENTER Y
+    MOVEOBJ move;                            // MOVE STUFF
+    int doneflag;                            // SHOT DONE = TRUE
+    ESHOT_LIB *lib;                          // POINTER TO LIB
+    int cnt;
+    int speed;
+    int pos;
+    int type;
+    SPRITE_SHIP *en;
+    int gun_num;
+}ESHOT;
+
+void ESHOT_Shoot(SPRITE_SHIP *enemy, int gun_num);
+void ESHOT_Clear(void);
+void ESHOT_Think(void);
+void ESHOT_Display(void);
+void ESHOT_Init(void);