Create explosions_01.c

effects/explosions_01.c

@@ -0,0 +1,187 @@
+//
+// Here some random eplosion/fireworks effects.
+
+// I actually discovered here that the GetRandomValue does not return floats!
+//
+//
+//
+
+
+#include "raylib.h"
+#include <math.h>
+
+#define MAX_EFFECT 1000
+
+int myMap[10][11] =  {  {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,1,1,1}
+                    };  
+int mapWidth = 11;
+int mapHeight = 10;
+float tileWidth;
+float tileHeight;
+
+static struct effect{
+    bool active;
+    Vector2 position;
+    Vector2 inc;
+    Vector2 incmod;
+    int w;
+    int h;
+    int countdown;
+}effect;
+
+static struct effect arr_effect[MAX_EFFECT];
+
+
+int screenWidth;
+int screenHeight;
+
+void createeffect();
+//Unit collide with solid blocks true/false
+bool recttilecollide(int x, int y, int w, int h, int offsetx,int offsety);
+// Our rectsoverlap function. Returns true/false.
+static bool rectsoverlap(int x1,int y1,int w1,int h1,int x2,int y2,int w2,int h2);
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    screenWidth = 800;
+    screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+    tileWidth = ceil((float)(float)screenWidth/(float)mapWidth);
+    tileHeight = ceil((float)screenHeight/(float)mapHeight);
+
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    createeffect();
+    int effectdelay=0;
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        effectdelay--;
+        if(effectdelay<0){
+            effectdelay=GetRandomValue(0,100);
+            createeffect();
+        }
+        
+        // update the effect
+        for(int i=0;i<MAX_EFFECT;i++){
+            if(arr_effect[i].active==true){
+                // When exit the effect and disable
+                arr_effect[i].countdown--;
+                if(arr_effect[i].countdown<0)arr_effect[i].active=false;
+                
+                arr_effect[i].inc.y += arr_effect[i].incmod.y;
+                
+                if(arr_effect[i].inc.x<0){
+                    arr_effect[i].inc.x-=arr_effect[i].incmod.x;
+                }else{
+                    arr_effect[i].inc.x+=arr_effect[i].incmod.x;;
+                }
+                
+                arr_effect[i].position.x += arr_effect[i].inc.x;
+                arr_effect[i].position.y += arr_effect[i].inc.y;
+            }
+        }
+        
+        
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+                
+            // draw the effect
+            for(int i=0;i<MAX_EFFECT;i++){
+                if(arr_effect[i].active==false)continue;
+                DrawRectangle(arr_effect[i].position.x,arr_effect[i].position.y,arr_effect[i].w,arr_effect[i].h,RED);
+            }
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}
+
+void createeffect(){
+    int posx = GetRandomValue(0,screenWidth);
+    int posy = GetRandomValue(0,screenHeight);
+    int i=0;
+    int cnt=0;
+    while(cnt<50){
+        i++;
+        if(i>MAX_EFFECT){
+            continue;
+            cnt=51;
+        }
+        if(arr_effect[i].active==true){        
+            continue;
+        }
+        arr_effect[i].active = true;
+        arr_effect[i].position.x = posx;
+        arr_effect[i].position.y = posy;
+        arr_effect[i].w = 16;
+        arr_effect[i].h = 16;
+        arr_effect[i].inc.x = GetRandomValue(-1,1);
+        arr_effect[i].inc.y = GetRandomValue(-10,-5);
+        arr_effect[i].incmod.x = (float)(GetRandomValue(0,100)/2500.0f);
+        arr_effect[i].incmod.y = (float)(GetRandomValue(0,100)/1000.0f)+0.2f;
+        if(GetRandomValue(0,8)==1){
+            arr_effect[i].incmod.x*=5;
+            arr_effect[i].inc.y*=1.5;
+        }
+        arr_effect[i].countdown = GetRandomValue(50,120);
+        cnt++;
+    }
+}
+
+
+//Unit collide with solid blocks true/false
+bool recttilecollide(int x, int y,int w, int h, int offsetx,int offsety){
+    int cx = (x+offsetx)/tileWidth;
+    int cy = (y+offsety)/tileHeight;
+    for(int y2=cy-1; y2<cy+2;y2++){//Note that the - and + are to be set differently with differently sized players
+    for(int x2=cx-1; x2<cx+2;x2++){
+        if(x2>=0 && x2<mapWidth && y2>=0 && y2<mapHeight){
+            if(myMap[y2][x2] == 1){
+                int x3 = (x2)*tileWidth;
+                int y3 = (y2)*tileHeight;
+                if(rectsoverlap(x+offsetx,y+offsety,w,h,x3,y3,tileWidth,tileHeight)){
+                    return true;
+                }
+            }
+        }
+    }}
+    return false;
+}
+
+// Rectangles overlap
+bool rectsoverlap(int x1,int y1,int w1,int h1,int x2,int y2,int w2,int h2){
+    if(x1 >= (x2 + w2) || (x1 + w1) <= x2) return false;
+    if(y1 >= (y2 + h2) || (y1 + h1) <= y2) return false;
+    return true;
+}