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/*******************************************************************************************
*
* raylib [core] example - 2d camera split screen
*
* Addapted from the core_3d_camera_split_screen example:
* https://github.com/raysan5/raylib/blob/master/examples/core/core_3d_camera_split_screen.c
*
* Example originally created with raylib 4.5, last time updated with raylib 4.5
*
* Example contributed by Gabriel dos Santos Sanches (@gabrielssanches) and reviewed by Ramon Santamaria (@raysan5)
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2023 Gabriel dos Santos Sanches (@gabrielssanches)
*
********************************************************************************************/
#include "raylib.h"
#define PLAYER_SIZE 40
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 440;
InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera split screen");
Rectangle player1 = { 200, 200, PLAYER_SIZE, PLAYER_SIZE };
Rectangle player2 = { 250, 200, PLAYER_SIZE, PLAYER_SIZE };
Camera2D camera1 = { 0 };
camera1.target = (Vector2){ player1.x, player1.y };
camera1.offset = (Vector2){ 200.0f, 200.0f };
camera1.rotation = 0.0f;
camera1.zoom = 1.0f;
Camera2D camera2 = { 0 };
camera2.target = (Vector2){ player2.x, player2.y };
camera2.offset = (Vector2){ 200.0f, 200.0f };
camera2.rotation = 0.0f;
camera2.zoom = 1.0f;
RenderTexture screenCamera1 = LoadRenderTexture(screenWidth/2, screenHeight);
RenderTexture screenCamera2 = LoadRenderTexture(screenWidth/2, screenHeight);
// Build a flipped rectangle the size of the split view to use for drawing later
Rectangle splitScreenRect = { 0.0f, 0.0f, (float)screenCamera1.texture.width, (float)-screenCamera1.texture.height };
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
//----------------------------------------------------------------------------------
if (IsKeyDown(KEY_S)) player1.y += 3.0f;
else if (IsKeyDown(KEY_W)) player1.y -= 3.0f;
if (IsKeyDown(KEY_D)) player1.x += 3.0f;
else if (IsKeyDown(KEY_A)) player1.x -= 3.0f;
if (IsKeyDown(KEY_UP)) player2.y -= 3.0f;
else if (IsKeyDown(KEY_DOWN)) player2.y += 3.0f;
if (IsKeyDown(KEY_RIGHT)) player2.x += 3.0f;
else if (IsKeyDown(KEY_LEFT)) player2.x -= 3.0f;
camera1.target = (Vector2){ player1.x, player1.y };
camera2.target = (Vector2){ player2.x, player2.y };
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginTextureMode(screenCamera1);
ClearBackground(RAYWHITE);
BeginMode2D(camera1);
// Draw full scene with first camera
for (int i = 0; i < screenWidth/PLAYER_SIZE + 1; i++)
{
DrawLineV((Vector2){(float)PLAYER_SIZE*i, 0}, (Vector2){ (float)PLAYER_SIZE*i, (float)screenHeight}, LIGHTGRAY);
}
for (int i = 0; i < screenHeight/PLAYER_SIZE + 1; i++)
{
DrawLineV((Vector2){0, (float)PLAYER_SIZE*i}, (Vector2){ (float)screenWidth, (float)PLAYER_SIZE*i}, LIGHTGRAY);
}
for (int i = 0; i < screenWidth/PLAYER_SIZE; i++)
{
for (int j = 0; j < screenHeight/PLAYER_SIZE; j++)
{
DrawText(TextFormat("[%i,%i]", i, j), 10 + PLAYER_SIZE*i, 15 + PLAYER_SIZE*j, 10, LIGHTGRAY);
}
}
DrawRectangleRec(player1, RED);
DrawRectangleRec(player2, BLUE);
EndMode2D();
DrawRectangle(0, 0, GetScreenWidth()/2, 30, Fade(RAYWHITE, 0.6f));
DrawText("PLAYER1: W/S/A/D to move", 10, 10, 10, MAROON);
EndTextureMode();
BeginTextureMode(screenCamera2);
ClearBackground(RAYWHITE);
BeginMode2D(camera2);
// Draw full scene with second camera
for (int i = 0; i < screenWidth/PLAYER_SIZE + 1; i++)
{
DrawLineV((Vector2){ (float)PLAYER_SIZE*i, 0}, (Vector2){ (float)PLAYER_SIZE*i, (float)screenHeight}, LIGHTGRAY);
}
for (int i = 0; i < screenHeight/PLAYER_SIZE + 1; i++)
{
DrawLineV((Vector2){0, (float)PLAYER_SIZE*i}, (Vector2){ (float)screenWidth, (float)PLAYER_SIZE*i}, LIGHTGRAY);
}
for (int i = 0; i < screenWidth/PLAYER_SIZE; i++)
{
for (int j = 0; j < screenHeight/PLAYER_SIZE; j++)
{
DrawText(TextFormat("[%i,%i]", i, j), 10 + PLAYER_SIZE*i, 15 + PLAYER_SIZE*j, 10, LIGHTGRAY);
}
}
DrawRectangleRec(player1, RED);
DrawRectangleRec(player2, BLUE);
EndMode2D();
DrawRectangle(0, 0, GetScreenWidth()/2, 30, Fade(RAYWHITE, 0.6f));
DrawText("PLAYER2: UP/DOWN/LEFT/RIGHT to move", 10, 10, 10, DARKBLUE);
EndTextureMode();
// Draw both views render textures to the screen side by side
BeginDrawing();
ClearBackground(BLACK);
DrawTextureRec(screenCamera1.texture, splitScreenRect, (Vector2){ 0, 0 }, WHITE);
DrawTextureRec(screenCamera2.texture, splitScreenRect, (Vector2){ screenWidth/2.0f, 0 }, WHITE);
DrawRectangle(GetScreenWidth()/2 - 2, 0, 4, GetScreenHeight(), LIGHTGRAY);
EndDrawing();
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadRenderTexture(screenCamera1); // Unload render texture
UnloadRenderTexture(screenCamera2); // Unload render texture
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
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