89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*******************************************************************************************
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*
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* raylib [core] example - 2d camera
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*
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* This example has been created using raylib 1.5 (www.raylib.com)
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* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
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*
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* Copyright (c) 2016 Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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int main()
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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int screenWidth = 800;
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int screenHeight = 450;
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InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera");
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Camera2D camera;
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camera.offset = (Vector2){ 0, 0 };
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camera.target = (Vector2){ 400, 200 };
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camera.rotation = 0.0f;
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camera.zoom = 1.0f;
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Rectangle player = { 400, 200, 40, 40 };
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camera.target = (Vector2){ player.x + 20, player.y + 20 };
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SetTargetFPS(60);
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//--------------------------------------------------------------------------------------
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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// Update
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//----------------------------------------------------------------------------------
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if (IsKeyDown(KEY_RIGHT)) player.x -= 2;
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else if (IsKeyDown(KEY_LEFT)) player.x += 2;
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else if (IsKeyDown(KEY_UP)) player.y -= 2;
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else if (IsKeyDown(KEY_DOWN)) player.y += 2;
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// Camera target follows player
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camera.target = (Vector2){ player.x + 20, player.y + 20 };
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if (IsKeyDown(KEY_R)) camera.rotation--;
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else if (IsKeyDown(KEY_F)) camera.rotation++;
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// Camera controls
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if (IsKeyDown(KEY_R)) camera.rotation--;
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else if (IsKeyDown(KEY_F)) camera.rotation++;
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camera.zoom += ((float)GetMouseWheelMove()*0.05f);
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if (IsKeyPressed(KEY_Z))
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{
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camera.zoom = 1.0f;
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camera.rotation = 0.0f;
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}
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//----------------------------------------------------------------------------------
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawingEx(camera);
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ClearBackground(RAYWHITE);
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DrawText("2D CAMERA TEST", 20, 20, 20, GRAY);
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DrawRectangle(0, 300, screenWidth, 50, GRAY);
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DrawRectangleRec(player, RED);
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DrawRectangle(camera.origin.x, 0, 1, screenHeight, GREEN);
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DrawRectangle(0, camera.origin.y, screenWidth, 1, GREEN);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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} |