This is my test game for understanding basics of SDL and game development on C.
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:
boi.mp4
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
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...
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