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Updated camera 2d example

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This commit is contained in:
raysan5 2016-06-03 13:22:24 +02:00
parent 7ca6397223
commit 501ef80bed
1 changed files with 71 additions and 21 deletions
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92
examples/core_2d_camera.c
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@ -11,6 +11,8 @@
#include "raylib.h"
#define MAX_BUILDINGS 100
int main()
{
// Initialization
@ -20,16 +22,31 @@ int main()
InitWindow(screenWidth, screenHeight, "raylib [core] example - 2d camera");
Rectangle player = { 400, 280, 40, 40 };
Rectangle buildings[MAX_BUILDINGS] = { 0, 0, 0, 0 };
Color buildColors[MAX_BUILDINGS] = { 80, 80, 80, 255 };
int spacing = 0;
for (int i = 0; i < MAX_BUILDINGS; i++)
{
buildings[i].width = GetRandomValue(50, 200);
buildings[i].height = GetRandomValue(100, 800);
buildings[i].y = screenHeight - 130 - buildings[i].height;
buildings[i].x = -6000 + spacing;
spacing += buildings[i].width;
buildColors[i] = (Color){ GetRandomValue(200, 240), GetRandomValue(200, 240), GetRandomValue(200, 250), 255 };
}
Camera2D camera;
camera.target = (Vector2){ player.x + 20, player.y + 20 };
camera.offset = (Vector2){ 0, 0 };
camera.target = (Vector2){ 400, 200 };
camera.rotation = 0.0f;
camera.zoom = 1.0f;
Rectangle player = { 400, 200, 40, 40 };
camera.target = (Vector2){ player.x + 20, player.y + 20 };
SetTargetFPS(60);
//--------------------------------------------------------------------------------------
@ -38,24 +55,36 @@ int main()
{
// Update
//----------------------------------------------------------------------------------
if (IsKeyDown(KEY_RIGHT)) player.x -= 2;
else if (IsKeyDown(KEY_LEFT)) player.x += 2;
else if (IsKeyDown(KEY_UP)) player.y -= 2;
else if (IsKeyDown(KEY_DOWN)) player.y += 2;
if (IsKeyDown(KEY_RIGHT))
{
player.x += 2; // Player movement
camera.offset.x -= 2; // Camera displacement with player movement
}
else if (IsKeyDown(KEY_LEFT))
{
player.x -= 2; // Player movement
camera.offset.x += 2; // Camera displacement with player movement
}
// Camera target follows player
camera.target = (Vector2){ player.x + 20, player.y + 20 };
if (IsKeyDown(KEY_R)) camera.rotation--;
else if (IsKeyDown(KEY_F)) camera.rotation++;
// Camera rotation controls
if (IsKeyDown(KEY_A)) camera.rotation--;
else if (IsKeyDown(KEY_S)) camera.rotation++;
// Camera controls
if (IsKeyDown(KEY_R)) camera.rotation--;
else if (IsKeyDown(KEY_F)) camera.rotation++;
// Limit camera rotation to 80 degrees (-40 to 40)
if (camera.rotation > 40) camera.rotation = 40;
else if (camera.rotation < -40) camera.rotation = -40;
// Camera zoom controls
camera.zoom += ((float)GetMouseWheelMove()*0.05f);
if (IsKeyPressed(KEY_Z))
if (camera.zoom > 3.0f) camera.zoom = 3.0f;
else if (camera.zoom < 0.1f) camera.zoom = 0.1f;
// Camera reset (zoom and rotation)
if (IsKeyPressed(KEY_R))
{
camera.zoom = 1.0f;
camera.rotation = 0.0f;
@ -64,17 +93,38 @@ int main()
// Draw
//----------------------------------------------------------------------------------
BeginDrawingEx(camera);
BeginDrawing();
ClearBackground(RAYWHITE);
Begin2dMode(camera);
DrawText("2D CAMERA TEST", 20, 20, 20, GRAY);
DrawRectangle(-6000, 320, 13000, 8000, DARKGRAY);
for (int i = 0; i < MAX_BUILDINGS; i++) DrawRectangleRec(buildings[i], buildColors[i]);
DrawRectangleRec(player, RED);
DrawRectangle(camera.target.x, -500, 1, screenHeight*4, GREEN);
DrawRectangle(-500, camera.target.y, screenWidth*4, 1, GREEN);
End2dMode();
DrawRectangle(0, 300, screenWidth, 50, GRAY);
DrawRectangleRec(player, RED);
DrawText("SCREEN AREA", 640, 10, 20, RED);
DrawRectangle(camera.origin.x, 0, 1, screenHeight, GREEN);
DrawRectangle(0, camera.origin.y, screenWidth, 1, GREEN);
DrawRectangle(0, 0, screenWidth, 5, RED);
DrawRectangle(0, 5, 5, screenHeight - 10, RED);
DrawRectangle(screenWidth - 5, 5, 5, screenHeight - 10, RED);
DrawRectangle(0, screenHeight - 5, screenWidth, 5, RED);
DrawRectangle( 10, 10, 250, 113, Fade(SKYBLUE, 0.5f));
DrawRectangleLines( 10, 10, 250, 113, BLUE);
DrawText("Free 2d camera controls:", 20, 20, 10, BLACK);
DrawText("- Right/Left to move Offset", 40, 40, 10, DARKGRAY);
DrawText("- Mouse Wheel to Zoom in-out", 40, 60, 10, DARKGRAY);
DrawText("- A / S to Rotate", 40, 80, 10, DARKGRAY);
DrawText("- R to reset Zoom and Rotation", 40, 100, 10, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------