branching out

IsometricMap/isometricMap.c

@@ -16,8 +16,8 @@ IsometricMap * IsometricMapInit(int layer){
     //map->tileTextures[0] = LoadTexture("assets/desert.png");
     //map->tileTextures[1] = LoadTexture("assets/bigtower.png");
 
-    map->width = 100;
-    map->height = 100;
+    map->width = 200;
+    map->height = 200;
     map->textureWidth = map->tileTextures[0].width;
     map->textureHeight = map->tileTextures[0].height;
     map->worldPixelWidth = map->width * map->textureWidth;
@@ -60,6 +60,13 @@ Vector2 * IsometricMapCalcOffsetForTileAt(int x, int y, int textureSize){
     return offset;
 }
 
+Vector2 * IsometricMapCalcOffsetForTileAtEfficient(int x, int y, int halfTextureSize, int quarterTextureSize){
+    Vector2* offset = (Vector2 *)malloc(sizeof(Vector2));
+    offset->x = x * halfTextureSize - y * halfTextureSize;
+    offset->y = x * quarterTextureSize + y * quarterTextureSize;
+    return offset;
+}
+
 // returns Tile at x y on layer isometricMap
 Tile * IsometricMapGetTileFromArrayPosition(IsometricMap *map, int x, int y){
     return map->tiles[x][y];

IsometricMap/isometricMap.h

@@ -38,6 +38,8 @@ IsometricMap * IsometricMapInit(int layer);
 // For Rendering: calculates coordinate offset for a single tile at arrayPosition x y
 // Only works for tiles with texture width == height (and for 22.5 degree?)
 Vector2 * IsometricMapCalcOffsetForTileAt(int x, int y, int textureSize);
+// saves many divisions
+Vector2 * IsometricMapCalcOffsetForTileAtEfficient(int x, int y, int halfTextureSize, int quarterTextureSize);
 
 // Gives the most upper Tile above *tile
 Tile * IsometricMapGetMostUpperTile(IsometricMap **isometricMap, Tile *tile);

IsometricMap/isometricRenderer.c

@@ -48,10 +48,15 @@ void IsometricRendererRenderIsometricMap(Game *game){
         for(i=0; i < game->layers[n]->width; i++){
             for(j=0; j < game->layers[n]->height; j++){
                 // if tile had texture id -1, it would be empty tile
-                if(game->layers[n]->tiles[i][j]->textureId != -1){
-                    Vector2 *offset = IsometricMapCalcOffsetForTileAt(i,j, game->layers[n]->textureWidth);
+                if(game->layers[n]->tiles[i][j]->textureId == -1){
+                }
+                else{
+                    int quarterTextureSize = game->layers[n]->textureWidth / 4;
+                    int halfTextureSize = game->layers[n]->textureWidth / 2;
+                    // SHOULD BE SET ONCE INITIALLY
+                    Vector2 *offset = IsometricMapCalcOffsetForTileAtEfficient(i,j, halfTextureSize, quarterTextureSize);
                     // the higher the layer the higher it needs to be drawed
-                    offset->y -= n * (game->layers[n]->textureHeight/4);
+                    offset->y -= n * quarterTextureSize;
                 
                     int textureId = game->layers[n]->tiles[i][j]->textureId;
                     

README.md

@@ -27,7 +27,8 @@ Fantasy Welt oder Realistisch?
 + MapEditor
 * Rendering Reihenfolge: layer 0, Sprites auf layer 0, layer 1, Sprites auf layer 1; Theoretisch müssen die einzelnen Layer Reihenweise gedrawed werden mit den Sprites zwischendrin
 + IsometricMap struct erstellen, das den IsometricMap(+Layer) Array speichert ?
-
++ TODO: Das rendern der IsometricMap wird bei größeren Maps sehr ineffizient;
++ Add offset x and y to each tile to be calculated ONCE, not every frame
 
 ### WiP
 

game.c

@@ -70,9 +70,9 @@ Game *GameInit()
 
     for (n = 0; n < 10; n++)
     {
-        for (i = 0; i < 100; i++)
+        for (i = 0; i < game->layers[n]->width; i++)
         {
-            for (j = 0; j < 100; j++)
+            for (j = 0; j < game->layers[n]->height; j++)
             {
                 if(i > 50 && i < 70 && j == 50){
                     IsometricMapChangeTextureIdOfTile(game->layers, i, j, n, 0);

main.c

@@ -22,6 +22,7 @@ int main(){
     //SetTargetFPS(60);
 
     // GAME MAIN ROUTINE
+    int c = 0;
     while(!WindowShouldClose()){
 
         ListActAllSprites(game);
@@ -34,6 +35,20 @@ int main(){
         IsometricRendererRenderIsometricMap(game);
         ListDrawAllSprites(game->sprites, game->layers, game->camera);
         
+        /*
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        ListInsertBack(game->sprites, SpriteCreate(game->textures, 1, 250 + c % 500, 250 + c % 500));
+        c+=10;
+        printf("Sprites: %d\n", c);
+        */
         EndMode2D();
 
         // Moving cursor Sprite to Mouse Pos and drawing it