Create Example_-_Pattern_Movement.c

ai/Example_-_Pattern_Movement.c

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+/*
+Pattern Movement Example.
+
+Move a computer entity around using a set of instructions.  (pattern)
+
+*/
+
+
+#include "raylib.h"
+
+// This is for our map.
+static int mapwidth=20;
+static int mapheight=10;
+static int map[10][20] =    {   {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
+                                {1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,1,1,1,1},
+                                {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1},
+                                {1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,1,1,1,1},
+                                {1,1,1,1,1,1,1,1,0,1,1,1,1,0,0,1,1,1,1,1},
+                                {1,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,1},
+                                {1,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,1},
+                                {1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,1},
+                                {1,0,0,0,0,0,0,1,0,0,0,1,1,1,1,0,0,0,0,1},
+                                {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}}; 
+                       
+// The enum are for the instructions inside the agent command array.                       
+enum flag{up,down,left,right,wait1,wait2,stop};
+
+typedef struct agent{
+    bool active;
+    int x;
+    int y;
+    double time;
+    int commandposition; // Where in the command array are we at.
+    int command[1024];   // The array containing the movement instructions. 
+}agent;
+
+
+static void moveagent(void);
+
+// Create our agent.
+static agent myagent;
+
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+
+    float tilewidth = (float)screenWidth/(float)mapwidth;
+    float tileheight = (float)screenHeight/(float)mapheight;
+ 
+    // initialize agent.
+    myagent.active = true;
+    myagent.x = 1;
+    myagent.y = 1;
+    myagent.commandposition = 0; // we start at the first slot in the command array.
+    // This is the set of instructions we give the agent to let him move around the map. (script!)
+    int c[1024] = { right,wait1,right,wait1,right,wait1,right,wait1,right,wait1,
+                    right,wait1,right,wait1,down,wait1,down,wait2,down,wait1,
+                    down,wait1,down,wait1,down,wait1,right,wait2,right,wait1,
+                    left,wait1,left,wait1,left,wait1,left,wait1,left,wait1,stop};
+    // Put the instructions inside the myagent command array.
+    for(int i=0;i<1024;i++){
+        myagent.command[i] = c[i];
+        if(c[i]==stop)break;
+    }
+ 
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        moveagent();
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            // Draw our tilemap.
+            for(int y=0;y<10;y++){
+                for(int x=0;x<20;x++){
+                    if(map[y][x]==1){
+                        DrawRectangle(x*tilewidth,y*tileheight,tilewidth,tileheight,BLACK);
+                    }
+                }
+            } 
+            // Draw our agent.
+            DrawRectangle(myagent.x*tilewidth,myagent.y*tileheight,tilewidth,tileheight,RED);    
+                
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}
+
+// With this function we move the agent around. His instructions are inside the command array.
+// 
+void moveagent(){
+    if (myagent.active==false)return;
+    if (myagent.command[myagent.commandposition]==stop)return; // He has finished his current set of instructions. 'stop' 
+    //
+    switch (myagent.command[myagent.commandposition]){
+        case up:// up is a enum
+        myagent.y-=1;
+        myagent.commandposition+=1;
+        break;
+        case down:
+        myagent.y+=1;
+        myagent.commandposition+=1;
+        break;
+        case left:
+        myagent.x-=1;
+        myagent.commandposition+=1;
+        break;
+        case right:
+        myagent.x+=1;
+        myagent.commandposition+=1;
+        break;
+        case wait1://wait for a certain amount of time.
+        if(myagent.time<1)myagent.time+=0.05f;
+        if(myagent.time>=1){
+            myagent.time=0;
+            myagent.commandposition+=1;
+        }
+        break;
+        case wait2: //wait longer.
+        if(myagent.time<2)myagent.time+=0.05f;
+        if(myagent.time>=2){
+            myagent.time=0;
+            myagent.commandposition+=1;
+        }
+        break;
+        case stop://do nothing
+        break;
+    }
+    
+}