christoph/cpp-masssprings
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replace manual 3d-2d projection with orbital camera

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This commit is contained in:
Christoph Urlacher
2026-02-17 22:17:19 +01:00
parent 8d5a6a827c
commit 039d96eee3
5 changed files with 97 additions and 148 deletions
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30
src/main.cpp
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@ -44,9 +44,10 @@ auto main(int argc, char *argv[]) -> int {
SetTraceLogLevel(LOG_ERROR);
// SetTargetFPS(60);
// SetTargetFPS(165);
SetConfigFlags(FLAG_VSYNC_HINT);
SetConfigFlags(FLAG_MSAA_4X_HINT);
// SetConfigFlags(FLAG_WINDOW_ALWAYS_RUN);
InitWindow(WIDTH * 2, HEIGHT, "MassSprings");
@ -59,17 +60,9 @@ auto main(int argc, char *argv[]) -> int {
// Rendering configuration
Renderer renderer(WIDTH, HEIGHT);
Edge2Set edges;
edges.reserve(mass_springs.springs.size());
Vertex2Set vertices;
vertices.reserve(mass_springs.masses.size());
// Game loop
float camera_distance = CAMERA_DISTANCE;
float horizontal = 0.0;
float vertical = 0.0;
float frametime;
float abstime = 0.0;
int hov_x = 0;
int hov_y = 0;
int sel_x = 0;
@ -78,7 +71,6 @@ auto main(int argc, char *argv[]) -> int {
frametime = GetFrameTime();
// Mouse handling
Vector2 m = GetMousePosition();
float block_size;
float x_offset = 0.0;
float y_offset = 0.0;
@ -89,6 +81,7 @@ auto main(int argc, char *argv[]) -> int {
block_size = static_cast<float>(HEIGHT) / board.height;
x_offset = (WIDTH - block_size * board.width) / 2.0;
}
Vector2 m = GetMousePosition();
if (m.x < x_offset) {
hov_x = 100;
} else {
@ -103,7 +96,6 @@ auto main(int argc, char *argv[]) -> int {
sel_x = hov_x;
sel_y = hov_y;
}
camera_distance += GetMouseWheelMove() / -10.0;
// Key handling
std::string previous_state = board.state;
@ -136,15 +128,6 @@ auto main(int argc, char *argv[]) -> int {
DEFAULT_SPRING_CONSTANT,
DEFAULT_DAMPENING_CONSTANT, DEFAULT_REST_LENGTH);
}
if (IsKeyPressed(KEY_UP)) {
vertical += 0.1;
} else if (IsKeyPressed(KEY_RIGHT)) {
horizontal += 0.1;
} else if (IsKeyPressed(KEY_DOWN)) {
vertical -= 0.1;
} else if (IsKeyPressed(KEY_LEFT)) {
horizontal -= 0.1;
}
// Physics update
mass_springs.ClearForces();
@ -157,13 +140,10 @@ auto main(int argc, char *argv[]) -> int {
#endif
// Rendering
renderer.Transform(edges, vertices, mass_springs, abstime * ROTATION_SPEED,
camera_distance, horizontal, vertical);
renderer.DrawMassSprings(edges, vertices);
renderer.DrawMassSprings(mass_springs);
renderer.DrawKlotski(board, hov_x, hov_y, sel_x, sel_y);
renderer.DrawTextures();
abstime += frametime;
renderer.UpdateCamera();
}
CloseWindow();