Knight

This is my test game for understanding basics of SDL and game development on C.

Table on contents

• General info
• Technologies
• Setup

General info

I wanted to write some game using only C, so this is actually my first ever try. I decided to use SDL framework and CLion as compiler. It was pretty hard to understand how to use SDL with CMakefiles, but, thanks to Timur (iltam sumra rashid), i could do it! So, the game shows as some little knight, that should kill some bots from UL. In future I am planning to add levels, different bots, different knight and really much other stuff!

The main technology implemented in this game is changing frames when you press the keys. I rendered all the frames separately, so that moving, hitting and all other actions of the characters turned out smooth and pleasant (relatively). Here's an example of how I implemented frame loading, where fileNames is names of our photos (f.e. photo1.jpg), arraySize is a numbers of our frames and textureArray is our storage:

int loadTextureArray(SDL_Renderer* renderer, const char** fileNames, int arraySize, SDL_Texture** textureArray)
{
    for(int i = 0; i < arraySize; i++)
    {
        SDL_Surface* surface = SDL_LoadBMP(fileNames[i]);
        if (surface == NULL)
        {
            printf("Error loading image %d: %s\n", i, SDL_GetError());
            SDL_DestroyRenderer(renderer);
            return 1;
        }
        textureArray[i] = SDL_CreateTextureFromSurface(renderer, surface);
        SDL_FreeSurface(surface);
        if (textureArray[i] == NULL)
        {
            printf("Error creating texture for image %d: %s\n", i, SDL_GetError());
            SDL_DestroyRenderer(renderer);
            return 1;
        }
    }
    return 0;
}

Here is my little boy:

I decided to make the number of bots and where they are generated random, that way gameplay will be more varied. Also now I will demonstrate the moment of my knight's strike.

            else if (event.key.keysym.sym == SDLK_SPACE)
            {
                isHitting = 1;
                
                if(type_1 == 1)
                {
                    if(type_2 == 1)
                    {
                        SDL_Rect rect_hit = {posX, posY, WIDTH, HEIGHT};
                        SDL_RenderCopy(renderer, texture_for_hitting_up[current_hit_up % frames_type_two], NULL, &rect_hit);
                        current_hit_up = (current_hit_up + 1) % frames_type_two;
                    }
                    else
                    {
                        SDL_Rect rect_hit = {posX, posY, WIDTH, HEIGHT};
                        SDL_RenderCopy(renderer, texture_for_hitting_down[current_hit_down % frames_type_two], NULL, &rect_hit);
                        current_hit_down = (current_hit_down + 1) % frames_type_two;
                    }
                }
                else
                {
                    if(type_2 == 1)
                    {
                        SDL_Rect rect_hit = {posX, posY, WIDTH, HEIGHT};
                        SDL_RenderCopy(renderer, texture_for_hitting_in_plus[current_hit_in_plus % frames_type_two], NULL, &rect_hit);
                        current_hit_in_plus = (current_hit_in_plus + 1) % frames_type_two;
                    }
                    else
                    {
                        SDL_Rect rect_hit = {posX, posY, WIDTH, HEIGHT};
                        SDL_RenderCopy(renderer, texture_for_hitting_in_minus[current_hit_in_minus % frames_type_two], NULL, &rect_hit);
                        current_hit_in_minus = (current_hit_in_minus + 1) % frames_type_two;
                    }
                }
            }

What does that mean? It means that when we press the spacebar we determine the direction of our knight (right or left) and depending on this we load a new array of textures into the renderer for playback! For example, when he hits:

And there is when he just stand:

Technologies

Project is created with:

• SDL, SDL2 and stuff
• CLion with C lang
• Photoshop for editing frames
• Structers, we don't have classes there :)
• My anal pain

Setup

I didn't do release yet, but soon it will appear in this project. Without release it would be pointless to try to download, because CMakefiles is too hard to handle, so...